CN103493845B - Attractant for thrips - Google Patents

Abstract

The invention discloses an attractant for thrips. The attractant is prepared by mixing methyl anthranilate, geraniol, plant perfumes and alcohol according to a weight ratio of (1-50):(1-30):(0.1-20):(10-300). The attractant has the beneficial effects that thrips can be efficiently attracted, the prevention and treatment cost is low, the quality security of agricultural products is not affected, the environment is not polluted, the attractant is safe for human beings, livestock, natural enemies and beneficial organisms, the ecological balance is not damaged, the sustainable development in green agricultural products is prompted, the industry synergia is prompted, and the income of farmers is increased.

Description

An attractant for thrips

technical field

The invention discloses an insect attractant, in particular to a thrips attractant. the

technical background

Thrips is a pest of the order Thysanoptera, which uses adults and nymphs to suck the juice of young plant tissues (twigs, leaves, flowers, fruits, etc.), the damaged young leaves and shoots become hard, curly and withered, the plant grows slowly, and the internodes shorten Feed in the flower, smash the pollen, destroy the stigma, and cause flower drop; the young fruit (such as mango, guava, eggplant, cucumber, watermelon, etc.) will harden after being damaged, and cause fruit drop in severe cases, seriously affecting the yield and quality. There are many kinds of thrips, which cause damage to vegetables, fruit trees, tea leaves, flowers and other crops. Due to the small size of thrips, the adult body is about 1 mm long, and the eggs are 0.2 mm long, oblong, and light yellow. Adults mostly suck juice between leaf veins, because they are small and difficult to see, they are often neglected in production, which causes great difficulties in control. Thrips occur in multiple generations a year and lay eggs on the flowers and leaves of plants. When the climate is suitable, eggs can develop into adults in about 2 weeks. Thrips damage crops with larvae and adults, and the number of occurrences varies significantly with different growth stages of crops. The crops reach the highest peak at the flowering stage, and then the number decreases. Thrips can also transmit viral diseases. the

At present, the control methods of thrips mainly include (1) agricultural control, remove weeds and dead branches and leaves in the field in early spring, burn or bury them in a centralized manner, and eliminate overwintering adults and nymphs; strengthen fertilizer and water management to promote strong plant growth and reduce damage. (2) Physical control, using the habit of thrips to turn blue, set up blue sticky boards in the field to trap and kill adults, and the height of the sticky boards is the same as that of crops. (3) Chemical control, choose 25% imidacloprid wettable powder or 5% acetamiprid wettable powder, 4.5% high chlorine EC, 5% pyramethrin and other agents for spray control. the

In recent years, there have been some green prevention and control technologies for thrips, such as application number 200910227375.0 which discloses a pure natural plant insecticide made from natural plants to control thrips pests, such as patent number 200820008447.3, patent number 200420027355.1 And application number 201020020566.8 all are to trap and kill insects according to the tendency of thrips to design sticky insect boards of color. Application No. 201110405614.4 proposes a drug for preventing and treating thrips in corn bean and its application method, which is suitable for poisoning thrips in corn bean pests, using Lvfu EC, Yiyijing, Caixi, Avixi, Dimehypo, Dusi Pesticides such as this and imidacloprid are likely to pollute the environment. Application number 201110101489.8 discloses a trapping and killing device for thrips pests, mainly using eucalyptol, anisaldehyde, hexenal, eugenol, hexenol, phenylethyl alcohol, carvone, linalool, methyl isonicotinate and other chemical substances are prepared into a chemical information mixture with attracting effect, and made into a thrips insect pheromone lure core. Relying on color to trap and kill thrips has the problems of insufficient attractiveness and poor effect. In addition, due to the wide variety of thrips, the attractant composed of chemical substances disclosed in the application number 201110101489.8 may have obvious effects on some thrips, but not good on others. The development of attractants for different semiochemicals has important production implications. the

Contents of the invention

The object of the present invention is to provide a thrips attractant, which can be applied to the lure control of thrips pests in the production process of vegetables, fruit trees, tea leaves and flowers. the

To achieve the above object, the present invention is achieved through the following technical solutions:

A thrips attractant is characterized in that: the attractant is a liquid mixture containing methyl anthranilate, geraniol, plant essence and alcohol.

Among them, methyl anthranilate, geraniol, plant essence and alcohol are mixed according to the weight ratio of 1-50:1-30:0.1-20:10-300. the

Wherein, the plant essence is leached from plant leaves with alcohol, by weight, 10-100 grams of plant leaves, 20-200 grams of organic solvent alcohol, filtered after 3-8 hours of extraction, and the filtrate is taken for later use. the

The positive effect of the present invention is that it can efficiently lure thrips-like pests, and is applied to the monitoring and control of thrips in the production process of vegetables, fruit trees, tea leaves, and flowers. Causes pollution, is safe for humans, livestock, natural enemies and beneficial organisms, does not destroy the ecological balance, is conducive to promoting the sustainable development of the vegetable, fruit tree, tea, and flower industries, and promotes industrial efficiency and farmers' income. the

Detailed ways

In order to facilitate understanding of the present invention, the present invention will be further described below in conjunction with specific examples. Its role is to be understood as a further elaboration of the present invention, rather than constituting any form of limitation to the present invention. the

Example 1

Using alcohol to extract from the plant leaves, 50 grams of plant leaves and 150 grams of organic solvent alcohol are extracted by weight for 5 hours and filtered, and the filtrate is taken for subsequent use.

] First, methyl anthranilate, geraniol, plant essence, and alcohol are mixed according to the weight ratio of 1-50:1-30:0.1-20:10-300, and then dissolved with acetone as a solvent to form Attractant for thrips. The method of measuring the lure effect is to add the prepared attractant to the colorless plastic hose to make a lure core; then fix the prepared lure core on a white insect trap for measurement, and observe and count the lure after 72 hours. The number of thrips arrived. In Table 1, the formulations with different weight ratios and the attracting effect in practical application are given in detail. the

Table 1 Attractive effects of different weight ratios of attractants in practical applications

It can be seen from Table 1 that formulas 1 to 9 all have an attractive effect on thrips, and formula 4 (methyl anthranilate, geraniol, plant essence, and alcohol in a weight ratio of 20:15:10:50) Lures work best.

Example 2

The leaves of the plants are extracted with ethanol. According to the weight ratio, 10 grams of the leaves of the plants and 20 grams of alcohol as an organic solvent are extracted for 3 hours and then filtered, and the filtrate is taken for subsequent use.

Methyl anthranilate, geraniol, plant essence, and alcohol are mixed in a weight ratio of 20:15:10:50, and then dissolved with acetone as a solvent to prepare a thrips attractant. the

Example 3

Using alcohol to extract from plant leaves, according to the weight ratio, 100 grams of plant leaves, 200 grams of organic solvent alcohol, filter after 8 hours of extraction, and take the filtrate for subsequent use.

Methyl anthranilate, geraniol, plant essence, and alcohol are mixed in a weight ratio of 20:15:10:50, and then dissolved with acetone as a solvent to prepare a thrips attractant. the

Claims (1)

1. an attractant for thrips, is characterized in that: this attractant is a kind of liquid mixture comprising methyl anthranilate, geraniol, plant essence, alcohol, and each composition is 1 ~ 50: 1 ~ 30: 0.1 ~ 20: 10 ~ 300 by weight ratio; Wherein, plant essence is from plant leaf blade, adopt alcohol to carry out lixiviate, plant leaf blade 10 ~ 100 grams, organic solvent alcohol 20 ~ 200 grams, and lixiviate was filtered after 3 ~ 8 hours, and it is for subsequent use to get filtrate.