CN102630454B - Integrated prevention and control method for dominant thrips of potted ficus microcarpa - Google Patents

Abstract

The invention provides a comprehensive prevention and control method for potted banyan dominant thrips, belonging to the field of agricultural insect and pest control. The invention aims at four growth stages of potted banyan tree seedling breeding, tuber cultivation, greenhouse modeling and stereotyped maintenance management, and integrates six control measures including plant quarantine, insect monitoring, horticultural control, physical control, biological control and chemical control. Assemble and propose comprehensive prevention and control measures applicable to each growth period. The invention can effectively control the occurrence and damage of the dominant thrips of the potted banyan tree, significantly reduce the use frequency and amount of pesticides, and has great significance for improving the ornamental and economic value of the potted banyan tree and protecting the environment.

Description

Comprehensive Control Methods of Dominant Thrips in Potted Banyan Trees

technical field

The invention relates to a comprehensive prevention and control method for potted banyan dominant thrips, belonging to the field of agricultural insect and pest control.

Background technique

Banyan tree is the general term for plants of the genus Ficus of the family Moraceae. There are more than 120 species in China, and 25 species in Fujian. They can be used for potted plants after being shaped. Potted banyan trees are the main foreign exchange-earning plants for export in China and Fujian Province. The main varieties include Ficus microcarpa Linn. f., F. benjamina Linn, F. benjamina cv. Golden Princess, and F. microcarpa cv. The export volume of Golden Leaves, F. elastica cv. Deocora Burgundy and F. elastica var. varigate etc. accounted for more than 90% of the international market share.

Potted banyan tree planting needs to go through four growth stages: seedling breeding, root tuber cultivation, greenhouse modeling and stereotyped maintenance. Seedling breeding period: from potted banyan tree seed selection, after sowing to seedlings growing 5-6 true leaves; tuber root cultivation period: from potted banyan tree seedlings growing 5-6 true leaves to root weight of about 400-500g; greenhouse shape Period: From lifting the root of the potted banyan tree out of the garden to completing the fixed shape in the pot in the greenhouse; stereotyped maintenance period: from the completion of the modeling of the potted banyan tree in the greenhouse to the cultivation and management site to the sale of the finished product.

In recent years, with the warming of the global climate, the expansion of industrial intensive production scale and the continuous enhancement of insecticide resistance, the occurrence of Thrips spp. has been increasing, and it has become one of the main pests in the planting process of potted banyan trees. Field thrips surveys on banyan trees and banyan trees in many places found that: potted banyan thrips species include Androthrips ramachandrai Karny, Gynaikothrips uzeli Zimmermann, greenhouse thrips Heliothrips haemorrhoidalis (Bauché), Liothrips piperinus Priesner, Mesothrips jordani Zimmermann, M. manii Ananthakrishnan, Xylaplothrips inquilinus (Priesner), Gigantothrips elegans Zimmermann, and Thrips elegans Scirtothrips dorsalis Hood and other 9 species; the most serious damage to potted banyan trees is Ficus thrips (up to 93% of the population, which is the dominant thrips), followed by Sagittarius dorsalis and Thrips dorsalis, and the other 6 The occurrence of thrips is less.

Dominant thrips for potted banyan trees—The host plants of banyan thrips are mainly banyan trees, Ficus concinna Miq., Ficus concinna Miq., Ficus concinna Miq., Ficus concinna, Golden leaf banyan and other Moraceae plants. In addition, there are Dracontomelon duperreranum , Ixora chinensis , and Mangifera indica , Fagraea ceilanica , Viburnum suspensum , Codiaeum variegatum , Melicocca bijuga , Nicotiana tabacum , Rhododendron , Colocarpum , Citrus , Eucalyptus , Mexican clove Certain species of the genus Gliricidia . The insect uses adults and nymphs to file and suck the young leaves and buds of the banyan tree. First, it files and sucks the juice along the main veins of the young leaves, forming purple-brown or brown spots of different sizes on the back of the leaves, and then folds along the midrib to the leaf surface. Deformation caused by distorted leaves or curled along the main veins, forming dumpling-shaped or pimple-shaped galls, with reddish-brown spots on the outside of the galls; on a leaf, there are generally 3 generations of sojourners, and there are dozens or more Hundred-headed nymphs and adults congregate, and the damaged leaves are rolled into a pile, and the green leaves turn dark yellow, as if they have been sunburned; many small round white spots are caused on the edges of old leaves. Potted seedlings are often damaged more severely, causing curling and discoloration of tender shoots, and severe whole plant tender leaves are curled into dumpling shapes, and the growth of damaged potted banyan trees is hindered, photosynthesis is weakened, and ornamental and economic value is reduced. The insect can also spread various diseases, and it has been listed as an invasive alien pest by Thailand, Japan, Slovakia, the United States and other countries. The control work is very difficult, and it is a difficult problem in the planting management, growth and export of potted banyan trees.

At present, the control measures available for potted banyan thrips include plant quarantine, pest monitoring, horticultural control, physical control, biological control and chemical control. Plant quarantine: When seeds and seedlings are transported, the plant quarantine system is strictly implemented, and when thrips are found, they are dealt with in time to prevent artificial spread of thrips. Insect infestation monitoring: Use methods such as the full-period distance method, phenology method, and effective accumulated temperature method to predict thrips infestation. Horticultural control: use seedling selection (seed selection, resistant seedling selection and robust seedling selection), field management and reasonable crop rotation to reduce the source of thrips insects; the advantages are convenient, economical, and preventive; the disadvantages are Poor control of thrips occurrence. Physical control: Use insect-proof nets to isolate, color boards (blue boards, yellow boards, etc.), lures, and light traps to reduce thrips damage; the advantage is that it does not destroy the ecological balance and does not produce 3R consequences; the disadvantage is that the cost involved is slightly higher, Such as insect nets. Biological control: using biocontrol bacteria (Laxella, Beauveria, etc.) The advantage is to maintain ecological balance, ensure long-term development, not pollute the environment, and not produce 3R consequences; the disadvantage is that the use is often limited by various conditions such as climate, and the control is specific. Chemical control: use chemical agents, such as spinosad SC, 52.25% chlorpyrifos-cypermethrin EC, 20% carbosulfan EC, 3% acetamiprid EC and 48% chlorpyrifos EC to control thrips population density; The advantage is that the effect is quick, the effect is good, and it is not limited by the region, season and area. At the same time, it has a good control effect on different insect states of thrips; the disadvantage is that while killing thrips, beneficial organisms are also damaged. Destruction of ecological balance will produce 3R consequences. At present, these prevention and control measures have been used in production, but because they have not been effectively integrated and assembled according to the requirements for thrips control in different growth stages of potted banyan trees, the control effect on thrips in potted banyan trees is not good. The damage is still increasing and has become one of the main pests in the planting process of potted banyan trees.

Contents of the invention

The purpose of the present invention is to provide a comprehensive prevention and control method for potted banyan dominant thrips, the method has good production and application effect, can control potted banyan thrips within the scope of economic hazard threshold index, and can improve the viewing and economical effect of potted banyan. The value and protection of the environment are of great significance.

The technical scheme that the present invention takes is as follows:

The present invention aims at the four growth stages of potted banyan tree seedling breeding, tuber cultivation, greenhouse modeling and stereotyped maintenance management, and constructs a comprehensive prevention and control method suitable for each growth period. The specific prevention and control methods include:

(1) Seedling breeding period

Combining horticultural control, physical control and chemical control, build a prevention and control system of isolation, clean seedlings, shed management and drug control;

Among them, chemical control: For seeds and seedlings, use 6000-8000 times of 25% thiamethoxam water dispersible granules to soak the seeds and irrigate the roots respectively to prevent and control the occurrence of thrips;

(2) Root cultivation period

Combine plant quarantine, pest monitoring, horticultural control, physical control, biological control and chemical control to build a prevention and control system for quarantine, garden management, trapping, biological control and drug control;

Among them, biological control: when the potted banyan tree has a dominant thrips population of 1-2 per leaf, spray with the spore suspension of the biocontrol fungus - Scalenia vulgaris V07, Vp28, V3450 or V16063 strain, of which 10 ⁹ -10 ¹¹ spores/ liter; at the same time, protect and utilize the natural enemies of thrips, and control the population of thrips;

Chemical control: When the dominant thrips population of the potted banyan tree reaches 3-5 per leaf, alternately use 500-1500 times solution of Methiocarb + acetamiprid 4:1 active ingredient ratio, 1500 times of 52.25% chlorpyrifos + cypermethrin EC liquid, 1200 times liquid of 48% chlorpyrifos EC, 1000 times liquid of 3% acetamiprid EC, 800 times liquid of 10% tebufenozide EC, 1000 times liquid of 2.5% Caixi suspension concentrate and 1000 times liquid of 25% actetam water dispersible granule Double liquid spray, spray once every 5-7 days;

(3) Greenhouse modeling period

Combining plant quarantine, horticultural control, physical control and biological control, build a prevention and control system for quarantine, isolation, chamber control, trapping and biological control;

Among them, horticultural control: graft high-resistant varieties on the upper part of the roots of low-resistant varieties to improve the insect resistance of plants;

Biological control: When the dominant thrips population of the potted banyan tree reaches 1-2/leaf, spray with the spore suspension of the biocontrol fungus-Calcium vulgaris V07, Vp28, V3450 or V16063 strain, of which 10 ⁹ -10 ¹¹ spores/liter ;

(4) Stereotyped maintenance period

Combining pest monitoring, horticultural control, physical control, biological control and chemical control, build a prevention and control system of isolation, land management, trapping, biological control and drug control;

Among them, biological control: the biological control part of the same root tuber cultivation period;

Chemical control: When the dominant thrips population of the potted banyan tree reaches 2-3 per leaf, use 1500 times of ethyl spinosad suspending agent, 1500 times of 90% methomyl soluble powder, 1200 times of 20% carbosulfan EC 800 times liquid, 4.5% beta-cypermethrin EC 800 times liquid, 5% imidacloprid EC 500 times liquid, 2.2% emamectin emamectin microemulsion 800 times liquid, 0.9% Beinong Aifuding tall oil 500 times liquid and 10% depleted suspending agent 1000 times liquid rotation spray, spray once every 5-7 days.

Comprehensive prevention and control method of the present invention is based on as follows:

1. Grasp the occurrence law of dominant thrips in potted banyan trees

Dominant thrips in potted banyan trees - thrips thrips can occur every year in tropical and most subtropical regions, and cause serious damage in May-June and September-October every year. Multiple generations (13-15 generations) can occur in one year, and the number of generations is closely related to temperature. Every June is the period when the insects occur the most, with an average of 13 insects in each leaf gall, and the largest number of insects in each leaf gall. The number of insects is up to 100, and the rate of eggs in leaf galls is 18.7%-100%, with an average of 74.2%. The time required for each generation varies with the seasons, pupation in the soil from January to April, and internalization in leaf galls from May to December Pupa, the fourth instar nymphs mostly pupate in the loose soil layer or in the gaps of leaves and branches. There is no obvious overwintering phenomenon in winter, the growth is slow, and the number of insects decreases. The generation period takes about 50 days. About 20 days, when the temperature is too high from July to August, the development will slow down, and the generation period will be about 30 days. Due to the large number of developmental generations, the generation overlap is serious, and adults, nymphs and eggs can be seen almost all year round. overwinter.

The optimum temperature for the development of the insect is 25°C (it has been reported that it is 24-27°C, when the temperature reaches above 33°C, the eclosion rate and hatching rate will decrease, and the mortality rate will increase), the relative humidity is 50%-70%, and the damage is rampant in the general dry season. High temperature and rainy conditions are not conducive to its occurrence (rainfall, especially continuous rainfall that causes water accumulation in galls, can directly kill some thrips and reduce population density, so thrips are prone to cause disasters in dry seasons and areas). When the daily average temperature is 25°C, it takes 28-30 days to complete one generation, with an average of 29 days. The first generation appears in January every year, the ninth generation appears in early November, and enters the overwintering period. Pupation or eclosion occurs at 7-10 o'clock and 16-19 o'clock in one day, and the pupation rate and eclosion rate are different under different temperature and humidity conditions. Adults mate 2-3 days after eclosion, and begin to lay eggs 5-7 days later. The eggs are produced in batches and irregularly. Each female adult can lay 25-81 eggs in a lifetime, with an average of 71 eggs, which are mostly produced in dumpling-shaped galls, and some adults lay eggs in cracks in the bark after they emerge from galls. The amount of eggs laid is related to food and temperature. and other factors. The eggs are arranged in blocks in the gall, and last for 2-20 days. The higher the temperature, the shorter the duration. In summer, the high temperature reaches above 35°C and the egg development slows down. When the room temperature reaches above 37°C, the eggs stop developing. At the later stage of egg development, red eye spots appear, indicating that it will hatch. The nymphs live in the dumpling-shaped leaf galls and file and suck the juice of the young leaves of the potted banyan tree.

The insect likes to cluster in the galls grown from the damaged leaves, and eats the leaves of banyan trees. Generally, young banyan trees are more harmful. The adult abdomen has the habit of warping upwards, and it only flies when frightened, and usually crawls to other places to feed or transfer leaves to cause damage. It will attach to host plants and vehicles and spread from A to B artificially or mechanically. The thrips that damage potted banyan trees also include thrips echinacea and thrips thrips thigh, which often cause damage in the same gall as thrips thrips, but the number of occurrences is small.

2. Do a good job of pest monitoring and forecasting

According to the occurrence rule of the dominant thrips of the potted banyan tree—Thrips sylvestris, combined with the local climate conditions, natural enemies and the growth and development status of the potted banyan tree, the period interval method (using the initial peak period, peak period or peak period of each insect state) The method of predicting the occurrence of pests by the time interval of the final period is obtained through the trapping method, artificial breeding method, and field investigation method), and the phenological method (using the relationship between life, growth and development between one kind of organism and other kinds of organisms) and law, as a method of predicting and forecasting pests), effective accumulated temperature method (a method of predicting the occurrence of pests by using the effective accumulated temperature of pest development, expressed by the formula: K=N(T-C); K: effective accumulated temperature, N: Days of development; T: actual temperature: C: starting temperature of development.) and other methods to make a good forecast of the insect.

3. Comprehensive prevention and control methods

The comprehensive prevention and control method of dominant thrips in potted banyan trees follows the plant protection policy of "prevention first, comprehensive prevention and control", and applies "plant quarantine, insect monitoring, horticultural control, physical control, biological control and chemical control" in different growth stages of potted banyan trees. "Prevention and control" and other prevention and control measures, build a prevention and control technology system with the core of quarantine, isolation, seedling cleaning, garden management (shed management, garden management, room management and ground management), trapping, biological control and drug control.

Main prevention and control measures:

(1) Plant quarantine

The advantages of potted banyan trees are small thrips insects, hidden activities, short flight distance under natural conditions, and less possibility of expanding distribution to cause damage, but they are easy to spread long distances with seedlings and soil. Therefore, quarantine work should be strengthened during transportation, and the plant quarantine system should be strictly implemented. When thrips are found, they should be dealt with in time, and efforts should be made not to introduce or export seedlings with thrips, etc., to prevent the artificial spread of thrips.

(2) Insect monitoring

Dominant thrips in potted banyan trees can occur every year in tropical and most subtropical regions, and cause serious damage in May-June and September-October every year. During these two time periods, the local climate conditions, natural enemies and plant growth and development conditions should be combined, using methods such as period distance method (obtained through trapping, breeding, field investigation and statistics), phenology method, effective accumulated temperature method, etc. Focus on making a good forecast of the insect.

(3) Horticultural control

①Pay attention to seed selection and breeding

Seed selection: Fresh, plump, mature (skin turns from green to reddish purple), and insect-free seeds have stronger vitality and higher germination rate. Before sowing, the fruits should be cleaned, exocarp removed, and germinated, and strictly disinfected with environmentally friendly pesticides to reduce the source of diseases and insect pests.

Breeding of robust seedlings: When raising seedlings and before planting, the quality of the seedlings should be considered. Robust and high-quality seedlings have a high survival rate and strong insect resistance. They are lightly damaged by thrips, the dominant thrips of potted banyan trees, and they shoot quickly and grow leaves quickly.

Breeding of resistant seedlings: When designing the greenhouse, the insect resistance and susceptibility of the species should be fully considered. Tests have shown that different banyan species in the same growth period are affected by the dominant thrips of potted banyan trees in different degrees, with the most severe thrips in the banyan tree, followed by the ginseng banyan and the flower-leaved banyan banyan, and the golden-leaved banyan, black-leaved rubber banyan and variegated rubber banyan. . Therefore, when building a greenhouse, high-resistant varieties can be grafted on the roots of low-resistant varieties to improve the insect resistance of the plants and reduce the damage caused by dominant thrips in potted banyan trees.

②Strengthen management between parks

Do a good job in the cleanliness, weed control and insecticide work of seedling sheds, nurseries, greenhouses and breeding management areas. The soil in the nursery needs to be soaked, dug, disinfected and trimmed to kill thrips in the soil. During the planting period, strengthen cultivation and management, water and fertilize timely to improve plant resistance; timely clean litter, fallen leaves and weeds, combine pruning, cut off dense branches, dead branches, diseased branches, and remove galls to improve ventilation and light conditions. Reduce insect sources.

③ Carry out reasonable crop rotation

After 1-2 years of planting banyan trees in the nursery, vegetables of different families should be planted in rotation to restore soil fertility and reduce the occurrence of pests and diseases.

(4) Physical control

① Insect net isolation

Do a good job in the daily maintenance of shed film, doors and windows, and insect-proof nets in seedling sheds, greenhouses, and breeding grounds to ensure or enhance the physical insect-proof and insect-proof functions of these places.

② Swatches, lures and light booby traps

Set up color sticky boards, sex attractants and insect trap lights in nurseries, greenhouses and breeding management sites to trap adult insects, which can reduce egg laying and damage, effectively reduce the number of insect populations, and reduce the amount of chemical pesticides used.

(5) Biological control

Utilizing biocontrol bacteria and natural enemies is a commonly used and effective method in biological control. Lecanicillium is one of the important species of biocontrol fungi. Its geographical distribution and host range are relatively wide. The secondary metabolite-toxin has good activity against target pests and is relatively safe against natural enemies. Good control. The results of indoor experiments showed that Lecanococcus had infective effect on the dominant thrips of potted banyan trees, among which V07, VP28, V3450 and V16063 (V07: sourced from Yuexi, Anhui Province, host Lepidoptera pests; VP28 and V3450: sourced from Guangzhou, Guangdong, the host is Bemisia tabaci ; V16063: the source is Canada, the host is the greenhouse whitefly Tririaleurodes vaporarioum .) and other strains have strong infection ability and can be used to control the pest. In addition, ladybugs (Seven-spotted ladybugs, tortoise-shaped ladybugs, etc.) Natural enemies such as black-winged flower bugs, southern small flower bugs, Chinese lacewings, large lacewings, eight-spotted silk lacewings, dot-line vein lacewings, hoverflies and clan gnats also have certain effects on potted banyan dominant thrips. The control function should also be protected and utilized.

(6) Chemical control

The dominant thrips in potted banyan trees damage the leaves and form dumpling-like or pimple-like galls, where the insects hide, live and reproduce. Non-specialized pesticides cannot produce good control effects on them, and the control is difficult. Tests have shown that with Methiocarb+Acetamiprid 4:1 active ingredient ratio 500-1500 times liquid, 48% chlorpyrifos EC 1200 times liquid, 2.5% Caixi suspension concentrate 1000 times liquid, 25% Actai water dispersible granules 1000 times solution of chlorpyrifos + cypermethrin EC, 1500 times solution of 52.25% chlorpyrifos + cypermethrin EC, 800 times solution of 4.5% beta-cypermethrin EC, 1000 times solution of 3% acetamiprid EC, 500 times solution of 0.9% beinongaifuding oil slick, 10% insecticide Hydrazide EC 800 times, ethyl spinosad suspension 1500 times, 90% methomyl soluble powder 1500 times, 20% carbosulfan EC 1200 times, 5% imidacloprid EC 500 times, 2.2 Spray 800 times liquid of % emamectin benzoate microemulsion and 1000 times liquid of 10% depletion suspending agent, spray once every 5-7 days, spray 2-3 times continuously, or use 25% thiamethoxam water dispersible granules 6000- Seed soaking with 8000 times liquid and root irrigation of seedlings have better control effect. When using pesticides, use them in rotation or alternately as much as possible to delay the emergence of highly resistant individuals; at the same time, you should seize the right time for spraying, and spray pesticides when the banyan tree shoots or adults turn leaves before galls are formed, so as to increase the number of pests and pesticides. The contact probability, contact area and contact quantity can further improve the control effect.

Key points of prevention and control technology:

(1) Quarantine

Do a good job in quarantine work, find seedlings with insects, and deal with them in time to control the initial population of thrips dominant in potted banyan trees.

(2) isolation

Do a good job in the daily maintenance of seedling sheds, greenhouses, greenhouse film, doors and windows, and install insect-proof nets on doors, windows, and vents to ensure or enhance the physical insect-proof and insect-proof functions of these places.

(3) Clean seedlings

Cultivating insect-resistant and robust seedlings is the key measure to prevent thrips dominant in potted banyan trees. As long as this link is grasped, potted banyan trees can be free from thrips damage or the degree of damage can be significantly reduced, and it also lays a good foundation for the implementation of other control measures.

(4) Garden management

Including sheds, garden management, room management and ground management, that is, to do a good job of cleaning, weed control and insecticide around the seedling shed, nursery, greenhouse and breeding management area, timely watering and fertilization, and timely pruning. Branches, dead branches, and diseased branches, remove galls to improve ventilation and light conditions and reduce insect sources.

(5) Trapping

During the growth period of the potted banyan tree, hang colored sticky boards, attractants and insect trap lights to trap adults of the dominant thrips of the potted banyan tree.

(6) Biological control

When the population density of the dominant thrips in potted banyan trees is low, biocontrol fungicides such as Lecanthus can be applied; at the same time, the protection and utilization of ladybugs (Lady beetle, Ladybug, etc.) Natural enemies such as black-striped flower bugs, Chinese lacewings and clan gnats.

(7) drug control

Chemical control is used as an auxiliary measure to prevent and control the dominant thrips population of potted banyan trees and to protect potted banyan trees from other diseases and insect pests. According to the insect situation, pay attention to timely, appropriate, and rotation of pesticides, and prohibit the use of highly toxic and highly toxic pesticides.

Comprehensive prevention and control methods for different growth stages:

(1) Seedling breeding period

Integrate and assemble horticultural control, physical control and chemical control measures, and build a prevention and control technology system for isolation, seedling cleaning, shed management and drug control.

Gardening measures: ① Select fresh, plump, mature (peel turns from green to reddish purple) and insect-free seeds, wash, remove the exocarp, and accelerate germination; ② Clean the seedling shed before sowing the seeds to eliminate the source of thrips Introduce; ③ When the seedlings grow to 2-3 leaves, apply thin fertilizer once a week, mainly water and fertilizer, to cultivate strong seedlings and increase the ability to resist thrips.

Physical control: Do a good job in the daily maintenance of the film, doors and windows of the seedling shed, and install insect nets at the doors, windows, and vents to prevent thrips outside from entering the seedling shed.

Chemical control: For seeds and seedlings, 6000-8000 times of 25% thiamethoxam water dispersible granules can be used to soak the seeds and irrigate the roots (30 ml/plant) respectively to prevent and control the occurrence of thrips.

(2) Root cultivation period

Integrate and assemble measures such as plant quarantine, pest monitoring, horticultural control, physical control, biological control and chemical control, and build a prevention and control technology system for quarantine, nursery management, trapping, biological control and drug control.

Plant quarantine: A strict quarantine system is implemented for the seedlings cultivated in the nursery. If thrips are found, the plants should be treated in time to strictly control the migration of thrips sources.

Insect infestation monitoring: Insect infestation forecasting and forecasting using methods such as the full-period distance method, phenology method, and effective accumulated temperature method.

Horticultural control: ① Select strong and high-quality seedlings to increase the resistance to thrips; ② Do a good job of cleaning around the nursery, weed control and insecticide. The soil needs to be soaked, dug, disinfected and trimmed to kill the thrips; ③ strengthen cultivation management, timely water and fertilize, improve plant resistance. ④ Timely clean litter, fallen leaves and weeds, combined with pruning, cut off dense branches, dead branches, diseased branches, remove galls, improve ventilation and light conditions, and reduce insect sources.

Physical control: hanging blue boards, sex attractants and insect trap lights, 20-30 blue boards/mu, 3-5 attractants/mu, and 1 insect trap lamp/ha, can trap a large number of adults.

Biological control: In the initial stage of dominant thrips in potted banyan trees (the population of insects is 1-2 per leaf), use the spore suspension of the biocontrol fungus - Lecanobacter v07, Vp28, V3450 or V16063 strain (10 ⁹ -10 ¹¹ spores/ l) spray; at the same time, protect and utilize natural enemies such as black-spotted flower bugs, seven-spotted ladybugs, horizontal thrips, Chinese lacewings, and clan gnats, so as to control the population of thrips within the range of economic threshold indicators as much as possible.

Chemical control: Medicate according to the situation of insects, change the habit of killing insects as soon as they are seen, and guide the use of medicines according to the control indicators. Generally, potted banyan tree dominant thrips insect population reaches 3-5 per leaf to prevent and control, use Methiocarb + acetamiprid 4:1 active ingredient ratio 500-1500 times liquid, 52.25% chlorpyrifos cypermethrin EC 1500 times liquid, 1200 times liquid of 48% chlorpyrifos EC, 1000 times liquid of 3% acetamiprid EC, 800 times liquid of 10% Tebufenozide EC, 1000 times liquid of 2.5% Caixi suspension concentrate and 1000 times liquid of 25% actetam water dispersible granule Wait for the spray, spray once every 5-7 days.

(3) Greenhouse modeling period

Integrate and assemble measures such as plant quarantine, horticultural control, physical control and biological control, and build a prevention and control technology system for quarantine, isolation, chamber control, trapping and biological control.

Plant quarantine: For potted banyan trees that have completed tuber cultivation, a strict quarantine system is implemented before being moved into the greenhouse for shaping. Plants with thrips found should be treated in time to prevent insect sources from being brought into the greenhouse.

Horticultural control: ① do a good job in cleaning the greenhouse; ② graft high-resistant varieties on the upper part of the roots of low-resistant varieties to improve the insect resistance of plants; ③ timely water and fertilize, trim in time, remove galls, improve ventilation and light conditions, Reduce insect sources.

Physical control: ① Do a good job in the daily maintenance of the greenhouse film, doors and windows, and install insect nets at the doors, windows, and vents to prevent thrips outside from entering the greenhouse; ② Hang blue boards and attractants, blue boards 8-10 One per shed, 3-5 lures per shed to trap adults.

Biological control: In the initial stage of dominant thrips in potted banyan trees (the population of insects is 1-2 per leaf), use the spore suspension of the biocontrol fungus - Lecanobacter v07, Vp28, V3450 or V16063 strain (10 ⁹ -10 ¹¹ spores/ l) spray.

(4) Stereotyped maintenance period

Integrate and assemble measures such as insect monitoring, horticultural control, physical control, biological control and chemical control, and build a prevention and control technology system for isolation, land management, trapping, biological control and drug control.

Insect monitoring: the same as the pest monitoring part of the root tuber cultivation period.

Horticulture prevention and control: ① Do a good job in the cleaning and sanitation of the breeding ground, weed control and insecticide work; ② Timely watering and fertilization, timely cleaning of dead branches, fallen leaves and weeds, cutting off dense branches, dead branches, diseased branches, and removing galls , improve ventilation and lighting conditions, and reduce insect sources.

Physical control: ① set up insect nets around the breeding ground to prevent the entry of external thrips; Insect trap lamp 1/ha can trap a large number of adults.

Biological control: the biological control part of the same root tuber cultivation period.

Chemical control: For general potted banyan trees, when the dominant thrips population reaches 2-3 per leaf, control with 1500 times liquid of ethyl spinosad suspending agent, 1500 times liquid of 90% methomyl soluble powder, 20% carbamide Granville EC 1200 times, 4.5% beta-cypermethrin EC 800 times, 5% imidacloprid EC 500 times, 2.2% emamectin emamectin microemulsion 800 times, 0.9% Beinong Aifudin slick oil 500 times and 10% Use 1000 times of suspending agent and other sprays in rotation, and spray once every 5-7 days.

The invention provides a comprehensive prevention and control method for potted banyan dominant thrips, involving plant quarantine, insect monitoring, horticultural control, physical control, biological control, chemical control and the like. Mainly aiming at the four growth periods of potted banyan tree cultivation, various control measures are integrated and assembled, and comprehensive prevention and control methods suitable for each growth period are proposed to effectively control the occurrence of dominant thrips in potted banyan trees and significantly reduce the frequency and use of pesticides. It is of great significance to enhance the ornamental and economic value of potted banyan trees and protect the environment.

Detailed ways

The present invention will be further described by examples below, and these descriptions are not intended to further limit the content of the present invention. Those skilled in the art should understand that equivalent replacements or corresponding improvements made to the contents of the present invention still fall within the protection scope of the present invention.

, to solve the problem of selection of some prevention and control measures

(1) Variety resistance selection

The insect resistance of host plants is considered to be one of the most effective means of controlling pests, which can reduce the damage of thrips in potted banyan trees from the root. In this experiment, by comparing the preference of the dominant thrips of the potted banyan tree, Thrips sylvestris, to 6 species of host plants of the genus Ficus, the insect resistance of the host plants to Thrips sylvestris was analyzed.

Test materials: The tested plants are 6 kinds of potted plants of the genus Ficus, including banyan tree, weeping-leaf ficus, mosaic-leaf weeping-leaf ficus, golden-leaf ficus, black-leaf rubber ficus and variegated rubber ficus. thrips.

Test method: ①Host damage : Take 1 young leaf of 6 kinds of Ficus potted plants indoors, wrap the petiole with wet cotton, put it into a petri dish and use filter paper and flower mud to keep it moist; each leaf is inoculated with 10 Thrips cephalosporins adults, then seal with plastic wrap, and use 0.27mm insect needles to prick pores on the plastic wrap to ventilate, repeat 3 times; after 10 days, classify the degree of damage of Thrips cephalosporins, and the leaves Placed under a SZ-760 stereomicroscope with a TUCSEN TCA-5.0 Color digital microscope camera to take pictures, and then use TSView v6.2.3.4 digital microscope camera image acquisition and processing software to statistically measure the number of insect damage points and insect damage on each leaf. Injury area.

②Development of thrips: In the room, the young leaves of 6 kinds of potted plants of the genus Ficus were inoculated with adults of Thrips sylvestris; A small white transparent nylon gauze bag (80 mesh) was used to cover the young leaves and tie the mouth tightly. Repeatedly received 6 pieces of each potted plant; observed once every 3 days with a hand-held magnifying glass (10X), and recorded the growth of thrips thrips every day. After 30 days, count the total egg production, 1-4 instar nymph and adult quantity and proportion, population growth rate of Ficus tube thrips on each tender leaf, analyze its oviposition dynamics, Population growth and instar structure, compared the preference of Thrips syringus to 6 kinds of potted plants of the genus Ficus.

Test results: ①Host damage (Table 1). Judging from the number of insect damage points, the number of banyan trees was the most (244.33), followed by the mosaic and weeping figs (185.67), and the number of weeping figs was slightly less (136.67); the number of golden leaf figs, black leaf rubber figs and variegated rubber figs was less , the maximum number is only 17.67, which is extremely different from the other three potted plants. However, in terms of the area of insect damage, the fig tree is the largest (47.17mm ² ), followed by the banyan tree (34.26mm ² ), and the fig tree with mosaic leaves is slightly smaller (20.11mm ² ); The largest is only 1.41mm ² , which is very different from the other three kinds of potted plants. It can be seen that the banyan tube thrips is the most harmful to the fig, followed by the damage to the fig tree, slightly less harmful to the mosaic fig, and very light to the golden-leaf fig, black-leaf rubber fig and variegated rubber fig.

Table 1 Comparison of damage to 6 species of Ficus potted plants

Note: Different capital letters in the same column indicate extremely significant differences ( P <0.01), and different lowercase letters indicate significant differences ( P <0.05).

② Thrips development (Table 2-4). It can be seen from Table 2 that: 3 days after inoculation, the number of eggs laid by Thrips sylvestris on 6 kinds of potted plants was not many, between 0.33-3.67; Except for rubber fig and variegated rubber fig, the number of eggs laid on banyan, fig, and mosaic fig all increased greatly, with the most (12.00-37.00 eggs) on fig, followed by banyan and mosaic (8.67-20.00 grains and 6.33-14.33 grains); 12-18 days after inoculation, the amount of eggs laid on golden leaf fig, black leaf rubber fig and variegated rubber fig still did not change, while banyan, weeping leaf fig and mosaic The amount of eggs laid on Ficus spp. continued to increase, with the largest number on Ficus and Ficus spp. (54.00-66.67 eggs and 58.67-76.67 eggs), followed by Ficus mosaicus (38.00-48.00 eggs); 21-30 hours after inoculation Day, the amount of eggs laid on the 6 kinds of potted plants tended to be stable. Comparing the total egg production of Ficus tube thrips on 6 kinds of potted plants of the genus Ficus, the number of eggs on Ficus and Ficus vulgaris is the most, followed by Ficus mosaic, and the number on Ficus golden leaf, Ficus black leaf and Ficus variegata is very little . It can be seen that the number of eggs and persistence of thrips in the banyan tube are the strongest on the banyan tree and the fig tree, followed by the mosaic fig. .

It can be seen from Table 3 that: 30 days after inoculation, 1-4 instar nymphs and adults of Ficus thrips were found on banyan trees, fig trees and figs, No thrips in the task worm state was found on the ficus. There was no significant difference in the number of 1st and 3rd instar nymphs on the three potted plants, which were between 2.33-4.33 and 2.00-3.33 heads, respectively; the number of 2nd-instar nymphs and adults was the largest on Ficus spp. (27.00 and 19.33 head), followed by Ficus (21.67 and 13.33), slightly less (15.67 and 10.67) on Ficus mosaic (15.67 and 10.67 heads); 4th instar nymphs, the largest number on Ficus (9.67), followed by banyan and mosaic Weeping Ficus (both 6.00 heads). Comparing the population growth rate of Thrips spp., it was still the highest (520.00%) on Ficus, followed by Ficus (386.67%) and Ficus mosaicus (266.67%). However, it can be seen from Table 4 that the instar structure of Thrips syringus on the three potted plants of banyan tree, fig tree and fig leaf fig were mainly 2nd instar nymphs (42.58-43.84%), followed by adults (28.80-30.31%) %), the 1st, 2nd and 4th instar larvae were slightly less (6.03-9.10%, 3.76-6.67% and 12.74-16.14% respectively); at the same time, the proportion of each stage of the larvae in the three potted plants , there is no significant difference between them. Visible: Ficus thrips can complete generations in banyan tree, fig tree and fig tree, with the best development on fig tree, followed by banyan tree and fig tree, but the three kinds of potted plants have the best effect on fig tree. The age structure of the population has little effect; while the generation cannot be completed on the golden-leaf fig, the black-leaf rubber fig and the variegated rubber fig.

Table 2 Oviposition dynamics of Thrips sylvestris on 6 potted plants of the genus Ficus

Note: Different uppercase letters in the same row indicate extremely significant differences ( P <0.01), and different lowercase letters indicate significant differences ( P <0.05).

Conclusion: Thystris sylvestris is the most serious damage, strong oviposition ability, and can complete generations on banyan trees, figs and figs, and the most serious damage, the strongest oviposition ability, and the best population development in figs. The banyan tree and the weeping-leaf ficus came next; while the golden-leaf ficus, black-leaf rubber ficus and variegated rubber ficus had light damage, weak spawning ability, and could not complete generations. It shows that among the 6 species of Ficus species, the preference of Ficus tube thrips is the strongest, followed by the banyan tree and Mosaic-leaved Ficus, and the preference for Golden-leaved Ficus, Black-leaved Rubber Ficus and Variegated-leaved Rubber Ficus is extremely weak. Therefore, when planting potted banyan trees, high-resistant varieties can be grafted on the roots of low-resistant varieties to improve the insect resistance of the plants and reduce the damage caused by thrips.

Table 3 Population growth of Thrips sylvestris on 6 potted plants of the genus Ficus

Note: Different uppercase letters in the same row indicate extremely significant differences ( P <0.01), and different lowercase letters indicate significant differences ( P <0.05).

Table 4 The instar structure of Thrips sylvestris on 3 potted plants of the genus Ficus

Note: Different capital letters in the same column indicate extremely significant differences ( P <0.01), and different lowercase letters indicate significant differences ( P <0.05).

(2) Screening of biocontrol agents

Biological control is a relatively safe, effective and long-lasting method for the control of thrips, and it is currently receiving much attention. However, due to the difficulty in the development and utilization of predatory and parasitic natural enemies, entomogenic fungi are the largest type of pathogenic microorganisms that control pest populations in nature. , excavation and utilization are more important, and it has become an important development direction of thrips biocontrol. Lecanicillium is one of the important species of entomogenic fungi, with a wide geographical distribution and host range. The secondary metabolite-toxin has good activity on target pests and is relatively safe to natural enemies. It has been used to control thrips, etc. Pests have great development potential and potential. In this experiment, by comparing the infection ability of 9 strains of Lecanothripes to Ficus thrips, we screened out the strains of Lecanopsis that have a better control effect on Ficus thrips.

Test materials: Ten kinds of strains of V. lecanii included V07, V09, V10, V11, V17, V18, V22, Vp28, V3450 and V16063. Screening of Aphids, Journal of Fujian Agriculture and Forestry University, 2006, 3, Volume 35, Issue 2; Wang Xueqin, Biological Characteristics of Verticillium lecanii and Infection to Tea Aphids, Master Thesis of Fujian Agriculture and Forestry University, Issue 06, 2007) , the source of the tested insects was Thrips sylvestris.

Test method: In the room, the 10 cultured strains were first prepared with 0.5% Tween 80 sterile water to make 10 ⁸ /ml spore suspension. Finally, take the petri dish, lay a piece of filter paper inside, moisten it with the diluted bacterial solution, and after drying it a little, place a piece of fresh young Ficus fig leaf in the middle of the petri dish, wrap the tender petiole with cotton soaked in water, and insert For 30 adult thrips of the banyan tube, spray a layer of bacterial liquid evenly on the thrips and the surface of the leaves with a small sprayer equipped with bacterial liquid. Wrap the Petri dish with plastic wrap and prick the holes with an insect needle. According to this method, each bacterial solution was repeated 3 times, and the control group used sterile water instead of the spore suspension. Put the prepared petri dishes into an artificial climate box with a temperature of 26±1°C, a relative humidity of 60±5%, and a photoperiod of L:D=8:16h, observe and record the number of dead thrips every day, and count the number of ficus tubes after 7 days The average corrected mortality rate of thrips was used to screen out the strains of S. lecanii that had a good control effect on thrips thrips.

Test results: After 7 days of infestation of Thrips sylvestris by 10 strains of Lecanocystis, the average corrected mortality of V07, Vp28, V16063 and V3450 treatments was higher, all above 81.82%; followed by V10, V11 and V22 treatments, The average adjusted mortality rates were 68.83%, 72.73, and 70.13, respectively; the average adjusted mortality rates of V09 and V17 treatments were slightly lower, 46.76% and 48.05, respectively; the average adjusted mortality rates of V18 treatment was the lowest, only 16.89% (Table 5).

Conclusion: The four strains of V. laxacilis V07, Vp28, V16063 and V3450 have a strong ability to infect thrips. They can be used for the control of thrips.

Table 5 Infection ability of 10 species of Lecanococcus spp.

(3) Screening of prevention and control agent formulations

Chemical control is still one of the most commonly used means to control Ficus thrips at present. It has quick effect and good effect, and is not limited by region, season and area. At the same time, it has good control effect on different stages of thrips. This experiment selected and determined the field control effect of 3 groups of formula agents on the dominant thrips of potted banyan trees—Thrips sylvestris, and screened and determined the best formulas and concentrations used in the field for the control of Thrips sylvestris.

Test materials: The test agents include 10% acetamiprid wettable powder, 2% abamectin EC, 25% amecarb wettable powder and 48% chlorpyrifos EC. The test plants were potted Ficus ginseng with a plant height of about 40cm-60cm.

Test methods: ①Pharmaceutical formula screening: In the ginseng planting area of the potted banyan tree planting base in Zhangzhou, Fujian, chlorpyrifos + acetamiprid (5:1, 4:1 and 3:1), abamectin + acetamiprid ( 1:1, 1:1.5 and 1:2) and Methiocarb + Acetamiprid (5:1, 4:1 and 3:1). Dilute 1000 times, and set up a clean water control CK at the same time; each treatment plot is 25m ² , repeated 3 times; each plot adopts 5-point sampling method, and 5 ginseng ficus are fixedly selected at each point, and the population base of ginseng is investigated before the drug treatment, and 1 day after the drug treatment , 3 days, 7 days, and 10 days to investigate the control effect, and select the best control ratio in each group of formulas; then integrate the cost price of each formula to screen out the best formula.

② Determination of the concentration of the formula used in the field: On the basis of the screening of the formula, select the ginseng planting area, set the optimal formula 500, 750, 1000, 1500, 2000 and 3000, 6 dilution multiples and 1 clean water control CK; Each treatment plot was 25m ² and replicated 3 times. The 5-point sampling method was adopted in each plot, and 5 ginseng ficus were fixedly selected at each point. The population base of insects was investigated before the application, and the control effect was investigated 1 day, 3 days and 7 days after the application to determine the ideal concentration of the formula for use in the field.

Test results: ①Pharmaceutical formulation screening (Table 6). Among the 3 ratios of chlorpyrifos + acetamiprid, the control effect of 5:1 ratio was the best at 1 day after treatment, which was 71.18%; 3 days after treatment, the difference between the control effect of 5:1 and 3:1 ratio was not significant , but significantly higher than the ratio of 4:1; 7 days after treatment, the ratio of 3:1 had the best control effect, reaching 84.45%. Abamectin + acetamiprid treatment with 3 ratios, the control effect on thrips was not very satisfactory at 1 day after treatment, ranging from 32.94-38.57%; 3 days and 7 days after treatment, still with 1 : 1.5 ratio had the best control effect, being 78.11% and 84.21% respectively. Meprocarb + acetamiprid 3 ratio treatments, the 5:1 ratio had the best control effect one day after treatment, which was 80.32%; 3 days after treatment, the control effect of each ratio was between 87.14-94.35% , the difference between them was not significant; and 7 days after treatment, the control effect of 4:1 ratio was the best, as high as 97.87%. Under the same dilution ratio, the optimal control ratios for each group of formulas against Thrips spp. were chlorpyrifos + acetamiprid 3:1, abamectin + acetamiprid 1:1.5, and medicarb + acetamiprid 4:1, and the control effect of Memocarb+Acetamiprid 4:1 is the best. Based on the cost price of each formula, Methiocarb + Acetamiprid 4:1 has the lowest price (7.83 yuan/100g), which is the best formula for controlling thrips.

Table 6 The control effect and cost price of 3 groups of formulations on thrips sylvestris (1000 times spray)

 Note: For multiple comparisons in the same row of formula medicines in each group, different uppercase letters indicate extremely significant differences ( P <0.01), and different lowercase letters indicate significant differences ( P <0.05).

② Determination of the field use concentration of formula agents (Table 7). One day after the application, the 4:1 ratio of Methiocarb + Acetamiprid 500 and 750 times had better control effects on Ficus thrips, which were 87.67 and 81.07%, respectively, which were significantly higher than the other 4 treatments; 3 days and 7 days after application, the control effects of 500, 750, 1000 and 1500 times solutions were all better, respectively between 84.47-98.87% and 82.01-97.22%, significantly higher than the other two treatments. The control effect of Methiocarb+Acetamiprid 4:1 ratio of 2000 and 3000 times is not very good; the control effect of 500-1500 is better, and neither of them caused phytotoxicity to potted banyan trees.

Table 7 Comparison of field control effects of Meprocarb + acetamiprid at different dilution ratios of 4:1

Note: Different uppercase letters in the same row indicate extremely significant differences ( P <0.01), and different lowercase letters indicate significant differences ( P <0.05).

Conclusion: The 4:1 ratio of Memecarb + Acetamiprid is the most ideal for the control of thrips thrips, and the control effect of 3-7 days after treatment is above 93.48%. There is no phytotoxicity, and the cost performance is the best. It is the best formula agent for controlling Ficus thrips, and it is recommended to use 500-1500 times liquid in the field. When using this drug, it should be used in rotation or alternately with other special agents to delay the emergence of highly resistant individuals; The contact probability, contact area and contact amount between insects and pesticides can further improve the control effect.

, Application of prevention and control measures at each stage

(1) Seedling breeding period

①Select fresh, plump, mature (peel turns from green to reddish purple), and non-worm-eaten seeds, wash and remove the exocarp; soak the seeds with 6000-8000 times of water-dispersible granules containing 60°C and 25% thiamethoxam to accelerate germination 12 hours.

③ Before sowing, clean the seedling house; timely repair and maintain the shed film, doors and windows, and insect-proof nets of the seedling-growing room, and install insect-proof nets on doors, windows, and vents.

④ When the seedlings grow to 2-3 leaves, apply a thin fertilizer once a week, mainly water and fertilizer, and use 25% thiamethoxam water dispersible granules 6000-8000 times to irrigate the roots (30 ml/plant).

Through the above comprehensive prevention and control methods, the rate of seed carrying insects and seedling insect strains can be controlled within 10%, which greatly reduces the source of thrips insects.

(2) Root cultivation period

① Strictly implement the plant quarantine system and deal with seedlings with insects in a timely manner.

② Control weeds, clean the nursery, soak, dig, disinfect and trim the soil.

③Using methods such as period distance method, phenology method and effective accumulated temperature method to predict and forecast the pest situation.

④Select strong and high-quality seedlings; strengthen cultivation management, water and fertilize timely, clean dead branches, fallen leaves and weeds in time, cut off dense branches, dead branches and diseased branches, and remove insect galls.

⑤ Hang blue boards, lures and insect traps, blue boards 20-30 per mu, lures 3-5 per mu, and insect traps 1 per hectare.

⑥At the initial stage of dominant thrips in potted banyan trees (the population reaches 1-2 per leaf), spray with 10 ¹¹ per liter of the spore suspension of the fungal strain V16063; when the thrips population reaches 3-5 per leaf, rotate Use Methiocarb + Acetamiprid 4:1 ratio 500-1500 times liquid, 52.25% chlorpyrifos + cypermethrin EC 1500 times liquid, 48% chlorpyrifos EC 1200 times liquid, 0.9% Beinong Aifudin oil slick 500 times liquid and Spray 25% Actay water dispersible granules with 1000 times liquid, and spray once every 5-7 days.

Through the above comprehensive prevention and control methods, the occurrence of dominant thrips during the period can be controlled within 10%, and the use of pesticides can be reduced by 1-2 times.

(3) Greenhouse modeling period

① Strictly implement the plant quarantine system, and deal with plants with insects in a timely manner.

②Clean the greenhouse; graft high-resistant varieties on the upper part of the roots of low-resistant varieties; timely water and fertilize, trim in time, and remove galls.

③ Repair and maintain the greenhouse film, doors and windows, and insect-proof nets in time, and install insect-proof nets on doors, windows, and vents.

④ Hang blue boards and lures, 8-10 blue boards/shed, 3-5 lures/shed.

⑤ At the initial stage of dominant thrips in potted banyan trees (the population reaches 1-2 per leaf), spray with 10 ¹¹ per liter of spore suspension of the fungus V16063 strain.

Through the above comprehensive prevention and control methods, the occurrence of dominant thrips during the period can be controlled within 5%, and the use of pesticides can be reduced by 1-2 times.

(4) Stereotyped maintenance period

① Set up insect nets around the breeding grounds.

②Using methods such as period distance method, phenology method, and effective accumulated temperature method to predict the pest situation.

③ Control weeds, clean the breeding ground, water and fertilize timely, clean litter and weeds in time, cut off dense branches, dead branches, and diseased branches, and remove galls.

④ Hang blue boards, lures and insect trap lights, 20-30 blue boards/mu, 3-5 lures/mu, and 1 insect trap/ha.

⑤ In the initial stage of the dominant thrips of the potted banyan tree, spray with 10 ¹¹ / liter of the spore suspension of the strain V16063; when the population of the thrips reaches 2-3/leaf, use the spinosad suspension 1500 times in rotation Liquid, 1500 times liquid of 90% methomyl soluble powder, 1000 times liquid of 3% acetamiprid EC and 1200 times liquid of 20% carbosulfan EC, spray once every 5-7 days.

Through the above comprehensive prevention and control methods, the occurrence of dominant thrips during the period can be controlled within 10%, and the use of pesticides can be reduced by 1-2 times.

, comprehensive application

From 2010 to now, the potted banyan tree planting base in Zhangzhou, Fujian has adopted the method described in the present invention to comprehensively prevent and control the dominant thrips in the 4 growth stages of potted banyan trees, which has improved the ecological environment of the potted banyan tree planting base and increased the advantages of banyan trees. The type and quantity of natural enemies of thrips reduce the phytotoxicity and pesticide residues, forming a virtuous cycle of ecological regulation of thrips, which has good ecological benefits; the occurrence of dominant thrips in potted banyan trees is controlled within 10%, saving labor and time, Reduce the use of pesticides for 2-3 times, and increase the profit of more than 2,000 yuan per mu, which has good economic benefits; Fully meet the export quarantine requirements, improve product quality and export volume, promote enterprises and flower farmers to increase production and income, and further promote the healthy and sustainable development of the industry, which has good social benefits.

Claims (1)

1. the Comprehensive Preventing control method of a potted plant banyan advantage thrips, it is characterized in that: support 4 vegetative stages of pipe for potted plant banyan seedling breeding, the cultivation of piece root, greenhouse moulding and typing, make up the Comprehensive Preventing control method that is fit to each vegetative period, concrete preventing control method comprises:

(1) the seedling breeding phase

In conjunction with gardening control, physical control and chemical control, make up the prevention and control system of isolation, clean seedling, canopy pipe and medicine control;

Wherein chemical control: to seed and seedling, soak seed respectively and fill with root, the generation of prevention and control thrips with 6000-8000 times of liquid of 25% Diacloden water dispersible granules;

(2) the piece root nurturing period

In conjunction with plant quarantine, Insect infestation monitoring, gardening control, physical control, biological control and chemical control, make up the prevention and control system of quarantine, garden pipe, trapping, biological and ecological methods to prevent plant disease, pests, and erosion and medicine control;

Wherein biological control: when potted plant banyan advantage thrips insect population reach 1-2 only/leaf, with the spore suspension spraying of the mould V07 of biocontrol microorganisms-lecanium, Vp28, V3450 or V16063 bacterial strain, wherein 10 ⁹-10 ¹¹Individual spore/liter; Simultaneously protection utilizes the thrips natural enemy, control thrips population quantity;

Chemical control: when potted plant banyan advantage thrips insect population reaches 3-5/leaf, wheel is used 500-1500 times of liquid, 52.25% chlopyrifos+1500 times of liquid of permethrin milk oil, 1200 times of liquid of 48% chlorpyrifos ec, 1000 times of liquid of 3% acetamiprid EC, 800 times of liquid of 10% worm hydrazides missible oil, 2.5% dish happiness 1000 times of liquid of suspending agent and 1000 times of liquid sprayings of the safe water dispersible granules of 25% Acker of meta-tolyl-N-methylcarbamate (MTMC)+Acetamiprid 4:1 effective ingredient proportioning instead, every spray in 5-7 days 1 time;

(3) the greenhouse moulding phase

In conjunction with plant quarantine, gardening control, physical control and biological control, make up the prevention and control system of quarantine, isolation, chamber pipe, trapping and biological and ecological methods to prevent plant disease, pests, and erosion;

Wherein gardening control: in the root top grafting high resistance kind of low anti-kind, improve the pest-resistant power of plant;

Biological control: when potted plant banyan advantage thrips insect population reach 1-2 only/leaf, with the spore suspension spraying of the mould V07 of biocontrol microorganisms-lecanium, Vp28, V3450 or V16063 bacterial strain, wherein 10 ⁹-10 ¹¹Individual spore/liter;

(4) the pipe phase is supported in typing

In conjunction with Insect infestation monitoring, gardening control, physical control, biological control and chemical control, make up isolation, manage, the prevention and control system of trapping, biological and ecological methods to prevent plant disease, pests, and erosion and medicine control;

Wherein biological control: with the biological control part of piece root nurturing period;

Chemical control: when potted plant banyan advantage thrips insect population reaches 2-3/leaf, eliminate the by turns spraying of 1000 times of liquid of suspending agent with 1500 times of liquid of ethyl pleocidin suspending agent, 1500 times of liquid of 90% Methomyl soluble powder, 1200 times of liquid of 20% carbosulfan missible oil, 800 times of liquid of 4.5% r, 500 times of liquid of 5% Imidacloprid missible oil, 800 times of liquid of 2.2% first dimension salt microemulsion, 0.9% 500 times of liquid of northern agricultural avermectin oil slick and 10%, every spray in 5-7 days 1 time.