CN102342296A - Preparation for controlling bemisia tabaci, preparation method and use method thereof - Google Patents

Abstract

The invention belongs to the technical field of pesticide, particularly relates to a preparation for controlling bemisia tabaci. The preparation comprises the following components: p-octyl polyethylene glycol phenyl ether, modified trisiloxane, ethyl sorbate, alum, sodium fluorosilicate, magnesium sulfate, ferrous sulfate, boric acid and water. The preparation provided by the present invention can directly kill more than 50% of the bemisia tabaci; the insect density can be reduced by more than 80-90% within five days so as to radically reduce the loss due to the occurrence of the bemisia tabaci. The preparation has characteristics of simple preparation method, easy use, low cost and no side effect; the preparation can be combined with the pesticide so as to improve the control effect; the preparation is applicable for vegetables, fruit trees, flowers, tea, cotton and other crops, and is suitable for popularization and application in countryside.

Description

A preparation for controlling Bemisia tabaci and its preparation and use method

technical field

The invention belongs to the technical field of pesticides, and in particular relates to a preparation for controlling Bemisia tabaci and its preparation and use methods.

Background technique

Bemisia tabaci, also known as the small white moth, belongs to the family Amiptera of the order Homoptera. It is a worldwide pest that occurs all over my country and is an important pest of crops grown in greenhouses and greenhouses. It has a wide range of hosts, including cucumbers, kidney beans, eggplants, tomatoes, peppers, wax gourds, beans, lettuce, cabbage, celery, green onions, etc. among vegetables are all affected by it, and it can also damage flowers, fruit trees, medicinal materials, grass, tobacco, etc. 112 There are 653 species of plants in the family. Since it was introduced into my country in the 1970s, it has become a major hazard to my country's agricultural production. By sucking plant juice, the leaves turn green, turn yellow, wilt, and even the whole plant dies, seriously affecting the yield and quality of crops. Bemisia tabaci has strong fecundity, fast reproduction speed, large population, and group damage. At present, there is no very effective control method. In agricultural production, spraying chemical pesticides and trapping with yellow sticky boards are the main methods, but these methods can only control the population density of insects within a certain period of time. And as the spraying time prolongs, Bemisia tabaci develops strong resistance to chemical pesticides, so farmers often reduce the harm by increasing the dose of pesticides and increasing the frequency of spraying. This not only increases the production cost, but also seriously pollutes the environment due to the indiscriminate application of pesticides, resulting in excessive pesticide residues.

Contents of the invention

The purpose of the present invention is to provide a preparation for controlling Bemisia tabaci, which can overcome the problems of poor control effect, high cost and heavy pollution of the current preparations.

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

A preparation for preventing and treating whitefly, the preparation per liter is composed as follows:

Polyethylene glycol octylphenyl ether: 2-3ml; Ethoxylated trisiloxane: 6-9ml; Ethyl sorbate: 0.2-0.5g; Alum: 4-6g; Fluorosilicic acid Sodium: 0.3-0.5 grams; magnesium salt, preferably magnesium sulfate: 2-3 grams; ferrous salt, preferably ferrous sulfate: 0.6-0.8 grams; boric acid: 0.2-0.4 grams; the balance is water.

The emulsifier polyethylene glycol octyl phenyl ether is resistant to hard water and alkali, and has the properties of emulsification, wetting, dispersion, solubilization and penetration. As a pesticide adjuvant, ethyl sorbate can increase efficiency, reduce toxicity and eliminate antibiotics. After compounding ethyl sorbate with pesticides, it can increase the control effect of the original drug, reduce the toxicity of the original drug, and greatly reduce the Highly toxic pesticides pollute the environment and damage the ecology. Alum can neutralize organic acids or sulfides adhered to dark green vegetables due to excessive spraying of pesticides, so as to keep the original color of vegetables and remove the pollution of pesticides to vegetables. Magnesium salt is used as an activator for various enzyme metabolisms in plants. Magnesium sulfate is selected because of its strong hygroscopicity and high viscosity. Iron element is necessary for the formation of plant chlorophyll to improve photosynthetic capacity and promote the absorption of preparations; the price of ferrous sulfate is lower than other ferrous salts, which can reduce the cost. The role of boric acid is to promote the transformation and operation of brassinosteroids and accelerate the growth and development of crops. Sodium fluorosilicate has insecticidal effect. Ethoxy-modified trisiloxane has a unique T-shaped umbrella structure, which is excellent in interface, can greatly reduce the surface tension of water, quickly wet the surface of plant leaves and insects, and promote the rapid expansion of active ingredients, Penetrate and absorb, greatly improve drug efficacy, low toxicity, save water and increase efficiency, save money and labor.

The present invention also provides a preparation method for the above-mentioned whitefly control whitefly preparation, the steps are as follows: first dissolve polyethylene glycol octylphenyl ether and ethoxy-modified trisiloxane Add an appropriate amount of water, then add ethyl sorbate, alum, sodium fluorosilicate, magnesium sulfate, ferrous sulfate, and boric acid, then mix evenly, add water to 1L, and mix evenly again to obtain the preparation.

The present invention also provides a method for using the above-mentioned preparation for controlling Bemisia tabaci. After mixing 10-20 mL of the preparation with 10 L of water, evenly spray it on the surface of plant leaves until the surface of the leaves is wet.

Use is generally carried out in the morning or evening.

The principle of the action of the preparation is that, by increasing the adhesion of water on the surface of the leaves, the whitefly will adhere to the surface of the leaf and cause it to die, and at the same time, it will form a uniform protective layer on the leaf, inhibiting the sucking of the whitefly on the leaf, so that the The number of bemisia tabaci has reached a controllable level.

The present invention can also add pesticides of appropriate concentration, improve the adhesion and deposition of medicaments on the drug-receiving surface, improve the release speed and expansion area of active ingredients under the condition of moisture, reduce the amount of pesticides, improve drug efficacy, and improve disease prevention. Healing effect.

This preparation is suitable for vegetables, fruit trees, flowers, tea, cotton and other crops. Tests have shown that this preparation can significantly accelerate the resistance of plants to whitefly after one application, and can directly kill more than 50% of whitefly, and the control effect can reach 80-90% after 5 days. It depends on the specific growth condition of the crop.

Compared with the prior art, the present invention has the following advantages:

The invention provides a preparation that can effectively prevent and control whitefly, which can directly kill more than 50% of whitefly, reduce the population density of more than 80-90% within 5 days, and reduce the loss caused by the occurrence of whitefly from the source . The preparation method of the preparation is simple, convenient to use, low in cost and has no side effect. At the same time, it can also be used in conjunction with pesticides to improve the control effect. It is suitable for various crops such as vegetables, fruit trees, flowers, tea, and cotton, and is suitable for popularization and application in the vast rural areas of our country.

Detailed ways

The technical scheme of the present invention is described below with specific examples, but protection scope of the present invention is not limited to this:

Example 1

The composition and content per liter of the preparation for controlling Bemisia tabaci on cucumber are as follows:

Polyethylene glycol octylphenyl ether: 2 ml; Ethoxylated trisiloxane: 6 ml; Ethyl sorbate: 0.3 g; Alum: 3 g; Sodium fluorosilicate: 0.2 g; Magnesium sulfate: 2 grams; ferrous sulfate: 0.7 grams; boric acid: 0.2 grams; others are water.

Preparation method: Dissolve polyethylene glycol octylphenyl ether and ethoxy-modified trisiloxane in an appropriate amount of water, and then add ethyl sorbate, alum, sodium fluorosilicate, magnesium sulfate, and ferrous sulfate , boric acid, then mix uniformly, add water to 1L, and mix uniformly again to obtain the preparation.

Use: Mix 10mL of the preparation with 10L of water evenly, and spray evenly on the surface of cucumber leaves in the morning at the 3-leaf stage of the cucumber in the greenhouse until it is moist. The death rate of whitefly on the day and the survival rate of whitefly after 5 days were counted. The results are shown in Table 1.

Table 1

Number before spraying (head/leaf) Number of deaths on the day of spraying (head/leaf) Mortality rate of insect population (%) Survival population after 5 days (head/leaf) Control effect (%) 20.5 11.5 55.8 1.6 92.2

Example 2

The composition and content per liter of the preparation for controlling Bemisia tabaci are as follows:

Ethylene glycol octylphenyl ether OP-10: 3 ml; Modified trisiloxane: 8 ml; Ethyl sorbate: 0.4 g; Alum: 4 g; Sodium fluorosilicate: 0.3 g; Magnesium sulfate: 2 grams; ferrous sulfate: 0.6 grams; boric acid: 0.4 grams; others are water.

Configuration method: dissolve polyethylene glycol octylphenyl ether and ethoxy-modified trisiloxane in an appropriate amount of water, and then add ethyl sorbate, alum, sodium fluorosilicate, magnesium sulfate, and ferrous sulfate , boric acid, then mix uniformly, add water to 1L, and mix uniformly again to obtain the preparation.

Use: Take 15mL of the preparation and mix it with 10L of water evenly, and spray evenly on the poinsettia cultivated in the greenhouse until the surface of the leaves is moist. The mortality of Bemisia tabaci on the day and the survival rate of Bemisia tabaci 5 days later were counted. The results are shown in Table 2.

Table 2

Number before spraying (head/leaf) Number of deaths on the day of spraying (head/leaf) Mortality rate of insect population (%) Survival population after 5 days (head/leaf) Control effect (%) 26.5 14.5 54.72 2.5 90.6

Example 3

For the preparation used to control cotton bemisia tabaci, its composition and content per liter of preparation are as follows:

Ethylene glycol octylphenyl ether OP-10: 3 ml; Modified trisiloxane: 9 ml; Ethyl sorbate: 0.5 g; Alum: 5 g; Sodium fluorosilicate: 0.4 g; Magnesium sulfate: 3 grams; ferrous sulfate: 0.7 grams; boric acid: 0.4 grams; others are water.

Configuration method: dissolve polyethylene glycol octylphenyl ether and ethoxy-modified trisiloxane in an appropriate amount of water, and then add ethyl sorbate, alum, sodium fluorosilicate, magnesium sulfate, and ferrous sulfate , boric acid, then mix uniformly, add water to 1L, and mix uniformly again to obtain the preparation.

Use: Mix 20 mL of the preparation with 10 L of water and spray evenly on the surface of cotton leaves infected with Bemisia tabaci in the morning until it becomes moist. The mortality of Bemisia tabaci on the day and the survival rate of Bemisia tabaci 5 days later were counted. The results are shown in Table 3.

table 3

Number before spraying (head/leaf) Number of deaths on the day of spraying (head/leaf) Mortality rate of insect population (%) Survival population after 5 days (head/leaf) Control effect (%) 18.6 9.5 52.70 3.5 81.18

Claims (5)

1. A preparation for controlling Bemisia tabaci, is characterized in that, every liter of described preparation is composed as follows: Polyethylene glycol octylphenyl ether: 2-3ml; Ethoxylated trisiloxane: 6-9ml; Ethyl sorbate: 0.2-0.5g; Alum: 4-6g; Fluorosilicic acid Sodium: 0.3-0.5 grams; magnesium salt: 2-3 grams; ferrous salt: 0.6-0.8 grams; boric acid: 0.2-0.4 grams; the balance is water. 2. The preparation for controlling Bemisia tabaci as claimed in claim 1, wherein said magnesium salt is magnesium sulfate. 3. The preparation for controlling Bemisia tabaci as claimed in claim 1, wherein said ferrous salt is ferrous sulfate. 4. the preparation method for preventing and treating Bemisia tabaci preparation described in claim 1 is characterized in that, in order to prepare 1L preparation, the steps are as follows: polyethylene glycol octylphenyl ether, ethoxy-modified trisilicon Dissolve oxane in an appropriate amount of water first, then add ethyl sorbate, alum, sodium fluorosilicate, magnesium sulfate, ferrous sulfate, and boric acid, then mix evenly, add water to 1L, and mix evenly again to obtain the preparation. 5. The use method for preventing and treating Bemisia tabaci preparation according to claim 1, characterized in that, after mixing 10-20 mL of the preparation with 10L of water, evenly spray it on the surface of the plant blade until the surface of the blade is wet. .