Green pesticide for preventing and treating plant diseases and insect pests of brassicaceous vegetables and preparation method thereof

Abstract

The invention provides a green pesticide for preventing and treating the plant diseases and insect pests of brassicaceous vegetables, and belongs to the technical field of pesticides. The green pesticide for preventing and treating the plant diseases and insect pests of the brassicaceous vegetables is prepared from, by weight, 1-5 parts of columbianetin, 5-20 parts of traditional Chinese medicine composition and 0.2-1 part of aid. The traditional Chinese medicine composition is prepared from, by weight, 10-30 parts of Chinese torreya fruits, 10-30 parts of amaranthus mangostanus, 5-20 parts of Japanese buttercup herb, 5-20 parts of pomegranate bark, 5-20 parts of ailanthus altissima, 5-15 parts of the twig and leaf of manyflower supplejack, 3-12 parts of mullein mightbrier leaves, 3-12 parts of black false hellebore, 3-12 parts of uniflower swisscentaury roots and 1-10 parts of herba verbenae. Columbianetin and the traditional Chinese medicine composition can achieve a synergistic interaction effect after being scientifically proportioned, the bacterium resisting and insect killing capacity of the obtained green pesticide is remarkably enhanced, the antibacterial and insecticidal spectrum is wider, and injurious insects are not likely to generate pesticide resistance.

Description

technical field [0001] The invention belongs to the technical field of pesticides, and in particular relates to a green pesticide for preventing and controlling cruciferous vegetable diseases and insect pests and a preparation method thereof. Background technique [0002] Cruciferous vegetables are the vegetables with the most variety and the largest yield. Common ones include Chinese cabbage, pak choy, cabbage, cauliflower, mustard greens, radishes, etc. Their pests are also the most harmful, and they have become the main production of cruciferous vegetables. One of the restrictive factors, and over-reliance on chemical pesticides in the control. Plutella xylostella has serious pesticide resistance due to frequent use of pesticides, and the efficiency of pesticide use in the field is significantly reduced. Almost most organophosphorus, carbamate and pyrethrin insecticides cannot effectively control Plutella xylostella. The larvae of the flea beetle feed on the roots of veg...

AI Technical Summary

Problems solved by technology

However, the development and utilization of botanical pesticides is still very slow, and there are many limiting factors, including the low activity of some botanical pesticides, large dosage, weak knockdown power, and slow efficacy, which is not conducive to the development of sudden epidemic diseases and insect pests. Prevention and control; the type and content of active ingredients are affected by their own genetic factors and external environmental conditions such as soil, temperature, light, and soil value, and will have regional and seasonal changes; and the content of active ingredients in different parts of the plant is also different , especially some active ingredients are unstable to light and heat etc.

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