Efficient cyfluthrin aqueous-dispersion nano composite granule and preparation method thereof

Abstract

The invention discloses an efficient cyfluthrin aqueous-dispersion nano composite granule and a preparation method thereof. The efficient cyfluthrin aqueous-dispersion nano composite granule is prepared from the following raw materials in percentage by weight: 20-80% of efficient cyfluthrin loaded on a nano carrier, 1.0-10.0% of a wetting agent, 2.0-10.0% of a dispersing agent, 1.0-10.0% of a disintegrating agent, 0.1-5% of other auxiliaries, and the balance of a filler. The preparation method of the efficient cyfluthrin aqueous-dispersion nano composite granule adopts a wet-process process to prepare a disintegrating and dispersing type aqueous-dispersion granule through an equal-grain-size spraying and pelletizing technology. Compared with a conventional granule, the efficient cyfluthrin aqueous-dispersion nano composite granule has the unique advantages of being long-acting in slow release, low in loss rate and residues, small in toxicity, high in safety, good in environmental compatibility and the like, can be widely applied to various insect pests in a farmland, an orchard and a vegetable field, and has an important application value.

Description

technical field [0001] The invention belongs to the field of pesticide preparations, in particular to a water-dispersed nanocomposite granule of beta-cyfluthrin and a preparation method thereof. Background technique [0002] Beta-cyfluthrin is the product of epimerization of cyfluthrin, also known as Bastree. In addition to the insecticidal spectrum and characteristics of ordinary cyfluthrin, the biggest advantage of this product is that it has higher insecticidal activity. The insecticidal activity is Twice that of ordinary cyfluthrin, the recommended dosage is only 0.4-1.3g (active ingredient) / mu. Cyfluthrin has strong contact and stomach poisoning effects, slight penetration but no systemic effect, broad insecticidal spectrum, and long-lasting effect. It can effectively control the pests of Coleoptera, Hemiptera, Homoptera and Lepidoptera on grain and oil crops (such as corn, wheat, peanut, soybean, etc.) and economic crops (if trees, tobacco and vegetables, etc.), such ...

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Problems solved by technology

[0003] (1) Contains a large amount of organic solvents such as toluene and xylene, causing great environmental pollution;

[0004] (2) No controlled release effect and poor adhesion to the target, resulting in low bioavailability and short validity period of the pesticide;

[0005] (3) It is easy to be decomposed by light and microorganisms, resulting in a decrease in drug efficacy;

[0006] (4) When used, it needs to be diluted with water to form an emulsion. The active ingredients are micron-scale dispersed, with poor dispersibility and low effective utilization rate, resulting in a large amount of pesticides, resulting in increased costs, large pesticide residues, and seriously affecting the quality of agricultural products.

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