Composition for preventing and controlling cucumber downy mildew and preparation method thereof

Abstract

The invention relates to a composition for preventing and controlling cucumber downy mildew and a preparation method thereof. The composition comprises, by weight, 3-5 parts of fluoride ether bacteria amide, 1-3 parts of Bituo microbicide, 1-3 parts of Coptis chinensis extract, 1-3 parts of garlic oil, 3-5 parts of medical stone, 0.1-0.5 part of pesticide fertilizer sustained release agent, 5-10 parts of wetting agent, 3-10 parts of dispersant, 25-35 parts of kieselguhr and 15-20 parts of water. The composition is reasonable in prescription and simple to prepare, is a novel environment-friendly preparation, and has significant effect in cucumber downy mildew prevention and control. During cucumber production, various pests exist at the same time frequently, and mixed application of four kinds of microbicides can enlarge the control range, enhance prevention and control effect, lower toxicity of the agents, prolong appropriate period for spraying, save prevention and control cost, reduce application times, enhance adaptability and delay development of target drug resistance.

Description

technical field [0001] The invention relates to a medicine for preventing and treating cucumber downy mildew and a preparation method thereof, belonging to the field of pesticides. Background technique [0002] Cucumber downy mildew is an important cucumber disease that can occur anywhere cucumbers are grown. The symptoms of cucumber downy mildew are mainly manifested on the leaves. The disease occurs at the adult plant stage, and mostly after flowering and fruiting. Usually, the onset is from the bottom leaves. When cucumbers are damaged, irregular chlorosis will appear on the front of the leaves in the early stage. Water-soaked disease occurs on the leaves, which is most obvious in the early morning or after rain. Then it gradually expands and becomes yellow-green or even yellow and brown. The lesions are limited by the veins, but they are not perforated. When the humidity is high, there will be a purple-black mold layer on the back of the lesions. When the condition ...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a medicine for preventing and treating cucumber downy mildew and a preparation method thereof, which solves the problem that the control effect of existing chemical medicines decreases, which leads to frequent occurrence of over-concentration and over-dosage abuse of pesticides by vegetable growers in production, resulting in phytotoxicity and vegetables, Pesticide residues in the soil are serious, forming a vicious circle, which seriously threatens and affects people's health and environmental safety.