阅读说明：本技术 一种灭幼脲和阿维菌素杀虫剂及其制备方法和用途 (Chlorbenzuron and abamectin insecticide and preparation method and application thereof ) 是由 罗会 韦昆 王晓宇 王忠波 李兴忠 于 2019-12-02 设计创作，主要内容包括：本发明涉及一种灭幼脲和阿维菌素杀虫剂及其制备方法和用途。所述杀虫剂以灭幼脲和阿维菌素增效复配为活性成分,加入溶剂、阴离子型表面活性剂、非离子型表面活性剂、填料制备成的超低容量喷雾油剂。本发明具有加工简便、持效期长、工效高等优点。通过超低容量喷雾,能够防治多种害虫。(The invention relates to a chlorbenzuron and avermectin pesticide and a preparation method and application thereof. The pesticide is an ultralow-volume spray oil agent prepared by taking synergistic compounding of chlorbenzuron and abamectin as active ingredients and adding a solvent, an anionic surfactant, a non-ionic surfactant and a filler. The invention has the advantages of simple and convenient processing, long lasting period, high work efficiency and the like. By ultra-low volume spraying, a variety of pests can be controlled.)

1. A pesticide compound spray oil agent is characterized in that: the chlorbenzuron and the abamectin are used as active ingredients, wherein the weight percentage of each component is as follows: chlorbenzuron: 0.1-2%, abamectin: 0.1-2%, organic solvent: 3-17%, anionic surfactant: 0.8-5%, nonionic surfactant: 1-7%, oily solvent: 45-80%, filler: 10 to 25 percent.

2. The pesticide compound spray oil agent of claim 1, which is characterized in that: the weight ratio of the chlorbenzuron and the abamectin serving as active ingredients in the compound combination is 1: 1-1: 20.

3. The pesticide compound spray oil agent of claim 1, which is characterized in that: the organic solvent is a mixture of three solvents of N, N-dimethylformamide, N-methyl-2-pyrrolidone and cyclohexanone, and the weight ratio is as follows: 1: 1 to 1: 2.5: 5.

4. The pesticide compound spray oil agent of claim 1, which is characterized in that: the anionic surfactant is a sulfonate auxiliary agent; the non-ionic surfactant is polyether and block polyether auxiliary agent; the oily solvent is methyl oleate; the filler is chlorinated paraffin.

5. The pesticide compound spray oil agent of claim 1, which is characterized by comprising the following components in percentage by weight:

or

Or

6. The preparation method of the pesticide compound spray oil agent as claimed in any one of claims 1 to 5, which is characterized in that: sequentially adding active ingredients and an organic solvent into a reactor with a stirring function at normal temperature and normal pressure, sequentially adding an anionic surfactant and a nonionic surfactant after the active ingredients are completely dissolved, stirring for 10-20 minutes to uniformly disperse the ingredients, sequentially adding a filler and an oily solvent, and continuously stirring for 10-20 minutes to obtain a single transparent homogeneous yellowish liquid which is an ultralow-volume spray oil containing chlorbenzuron and abamectin; the stirring speed adopted in the preparation method is 200-250 r/min.

7. The application of the pesticide compound spray oil agent of any one of claims 1 to 5 in the aspect of controlling pests, which is characterized in that the pests are as follows: pine moth, gypsy moth, tenebrio molitor, fall webworm, cabbage caterpillar, cabbage looper, tea geometrid, leaf miner, vegetable whitefly, leaf mite, litchi fruit borer; preferably preventing and treating litchi fruit borers.

8. A method for controlling agricultural pests is characterized in that: compounding a pesticide according to any one of claims 1 to 5 with a spray oil.

9. A method of controlling an agricultural pest according to claim 8 characterised in that: the application method is ultra-low volume spraying, and the ultra-low volume is 1 to 3 weight percent of the chlorbenzuron and abamectin spraying oil agent in any one of the claims 1 to 5.

Technical Field

The invention relates to a preparation method and application of an ultra-low volume spray oil agent containing chlorbenzuron and abamectin, belonging to the technical field of pesticides.

Background

The chlorbenzuron is a low-toxicity insecticide independently developed in China, has larva killing and ovicidal activity, is mainly used as stomach toxicity, also has a certain contact killing effect, and has higher activity on larvae, particularly lepidoptera larvae. Is used for preventing and treating crop pests such as armyworm, stem borer, cabbage caterpillar, diamondback moth, cabbage looper and the like. The insect hormone pesticide is an insect hormone pesticide which is a benzoyl urea insect chitin synthesis inhibitor and can inhibit the synthesis of insect chitin by inhibiting the activities of insect epidermal chitin synthase and uridine coenzyme to cause the death of insects due to the abnormal molting. When applied in the larval stage, the formation of new epidermis of the pests is blocked, the development of the pests is delayed, and the pests lack hardness, so that the larvae die or form abnormal pupae to die.

Avermectin is a macrolide compound extracted and developed from streptomycin by Merck company in America, can be used as a bactericide, an insecticide and an acaricide, has stomach toxicity and contact poisoning effects, but cannot kill eggs. Is used for preventing and controlling pests such as diamondback moth, beet armyworm, tetranychus urticae koch, vegetable root-knot nematode and the like. In the body of the pest, the nerve physiological activity of the pest can be interfered, the gamma-aminobutyric acid is stimulated to be released, the conduction inhibition effect is prayed, the paralysis symptom is generated after the pest contacts with the medicament, and the pest does not eat the medicament when the pest does not stop. And the pesticide composition can not move along with soil adsorption, has no accumulation effect in the environment, is easy to decompose by microorganisms, and is a high-efficiency green pesticide and acaricide.

Therefore, the two technical medicines have completely different action mechanisms, act on different growth cycles of pests respectively, can supplement each other, and carry out whole-process control from worm eggs to adults. At present, registered insecticides of synergistic compounding of chlorbenzuron and abamectin only comprise wettable powder and suspending agents, and reports of preparing the insecticides into ultra-low-volume spray oil are not found.

An Ultra low volume spray finish (ULV) is a special formulation for application in Ultra low volume spray devices, which is prepared by using a high boiling point oily solvent as a dispersion medium for an active ingredient and adding an auxiliary agent. When the plant protection agent is applied in the field, the plant protection agent is not diluted by water, is directly sprayed by using a plant protection unmanned aerial vehicle or ground equipment, has the droplet particle size of 70-120 mu m, and can be uniformly distributed on the surfaces of plant stems and leaves, so as to achieve the operation of preventing and treating agricultural diseases and insect pests. The agricultural department has formulated the action scheme of zero increase of pesticide usage to 2020 in 2015, and has carried out accurate scientific pesticide application, advanced pesticide application technologies such as low-volume spraying are adopted, so that the target performance of spraying is improved, the drift loss is reduced, the pesticide utilization rate is improved, and the pesticide usage amount is reduced.

Disclosure of Invention

The invention aims to overcome the defects of high labor intensity, low efficiency, long time consumption, poor control effect, short lasting period, easy generation of resistance and the like of the conventional spraying adopted by the traditional pesticide preparation in field pest control operation, and the ultra-low capacity spray oil agent containing chlorbenzuron and abamectin is prepared, does not need to be applied by adding water, has small fog drops, large coverage area and good control effect, and has obvious advantages when being used in large area or in water-deficient area. And be fit for plant protection unmanned aerial vehicle to fly to prevent the operation, can improve pest control operating efficiency by a wide margin, the cost is lower.

The invention relates to an ultra-low volume spray oil agent containing chlorbenzuron and abamectin, which is prepared by adding solvent, anionic surfactant, nonionic surfactant and filler, and comprises the following components in percentage by weight:

chlorbenzuron: 0.1-2%, abamectin: 0.1-2%, organic solvent: 3-17%, anionic surfactant: 0.8-7%, nonionic surfactant: 1-10%, oily solvent: 45-80%, filler: 10 to 25 percent.

The weight ratio of the chlorbenzuron and the abamectin serving as active ingredients in the compound combination is 1: 1-1: 20, and the preferable ratio is 1: 1-1: 2.

The chlorbenzuron accounts for 0.1-2% of the total weight, and the abamectin accounts for 0.1-2% of the total weight.

The organic solvent is a mixture of three solvents of N, N-dimethylformamide, N-methyl-2-pyrrolidone and cyclohexanone, and the weight ratio is as follows: 1: 1 to 1: 2.5: 5.

The anionic surfactant is a sulfonate auxiliary agent; the non-ionic surfactant is polyether and block polyether auxiliary agent; the oily solvent is methyl oleate; the filler is chlorinated paraffin.

The preparation method of the ultra-low volume spray oil agent comprises the steps of sequentially adding an active ingredient and an organic solvent into a reactor with a stirring function at normal temperature and normal pressure, sequentially adding an anionic surfactant and a nonionic surfactant after the active ingredient is completely dissolved, stirring for 10-20 minutes to uniformly disperse the components, sequentially adding a filler and an oily solvent, continuously stirring for 10-20 minutes, and finally obtaining a single transparent homogeneous yellowish liquid which is the ultra-low volume spray oil agent containing chlorbenzuron and abamectin; the stirring speed adopted in the preparation method is 200-250 r/min.

The invention is suitable for controlling various pests such as Pine moth (Pine caterpillar), gypsy moth (Lymantria dispar L), tenebrio molitor (Malacomonas neustria testacea), fall moth (Hypopharia cunea), cabbage caterpillar (Pieris rapae), diamondback moth (Plutella xylostella L), cabbage looper (Mamestra brassica), tea geometrid (Ectropis obliqua), leaf miner (Phyllodendron subterrata), vegetable whitefly (Trialeurodes vaporariorum), leaf mite (Spider mite), litchi fruit borer (Conopomorphism Bradley), and the like.

The application method of the present invention is ultra low volume spraying.

The invention has the beneficial effects that:

1. the water consumption is low, the pesticide is not mixed by adding water in the spraying process, but the pesticide is directly sprayed on the leaves and stems of crops to directly reach the target of plant diseases and insect pests, and the pesticide is conveniently applied in areas far from water sources and drought and water shortage areas.

2. The efficiency is high, and by using the ultra-low capacity sprayer to apply the pesticide, the efficiency can be greatly improved, the work efficiency is improved by several times to tens of times, the labor cost is reduced, and the labor intensity is effectively reduced.

3. The medicament has high concentration and long lasting period. The conventional medicament has high content, the unit active ingredient content of the liquid medicine sprayed after water blending is low, the ultralow volume is that the medicament is directly sprayed, the active ingredient content of the medicament is low, but the unit active ingredient concentration of the spray liquid is high, so that the medicament effect is favorably improved; and secondly, the ultralow volume adopts low-volatility oil as a solvent, so that the active ingredients penetrate into the deep layer of the leaf, the rain wash resistance is realized, the lasting period is prolonged, the medicine application times are reduced, and the agricultural cost is reduced.

4. And (3) synergistic interaction: the chlorbenzuron and the abamectin are insecticides with different action mechanisms, and the chlorbenzuron and the abamectin are compounded to play a role in synergy, improve the quick action, expand the spectrum of a control target, delay the drug resistance of pests and reduce the environmental pollution.

5. Is safe to crops, is not easy to generate the key, and has no obvious residue.

6. The unmanned aerial vehicle is suitable for operation of a plant protection unmanned aerial vehicle, and has the irreplaceable advantage of ground machinery.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in detail below with reference to specific embodiments. The specific embodiments described herein are merely illustrative of the invention and are not intended to be limiting. The following examples refer to "%" as "percent by weight" unless otherwise indicated.

Examples

The invention is further illustrated by the following examples. It should be understood that the method described in the examples is only for illustrating the present invention and not for limiting the present invention, and that simple modifications of the preparation method of the present invention based on the concept of the present invention are within the scope of the claimed invention. All the starting materials and solvents used in the examples are commercially available products.