Environment friendly pesticide for vegetables and preparation thereof

Abstract

The invention belongs to the field of pesticide, which particularly relates to the environmental-protection pesticide used for vegetables. According to the weight portions, the effective composition of the pesticide comprises the raw material extracting solution as follows: 5-10 of kusnezoff monkshood root, 5-20 of gelsemium elegans, 5-30 of tripterygium wilfordii, 5-20 of oleander and 20-40 of pyrethrum. The raw material tripterygium wilfordii of the invention has intense stomach poisoning on various agricultural fruit tree pests such as cabbage caterpillar, diamondback moth, and the like, and can cause apastia or narcotic action; the gelsemium elegans contains compounds such as terpene, flavonoid, lignanoids, coumarin, other phenyl propanoid, etc. The ethanol extract of the gelsemium elegans has excellent insecticidal activity on cabbage caterpillar. When in use, the pesticide is diluted into different concentrations by water according to different crops, effectively controls various pests such as cabbage bug, mustard aphid, cabbage army worm, and the like, and has effective control on the larva and ovum of the pests with the effective rate being more than 95%; furthermore, the pesticide has little residue after being used and has no toxicity.

Description

Technical field: [0001] The invention belongs to the field of pesticides, in particular to pesticides for vegetables. Background technique: [0002] In order to improve crop yield, quality, and obtain a good harvest, pesticides are indispensable, but the use of pesticides also has some substantial deficiencies, especially in the control of cabbage bugs, radish aphids, cabbage armyworms, beet armyworms, and cutworms. Pesticides for insects and other pests are mostly chemical pesticides at present. The use of less amount of pesticides is not effective, and the amount of more pesticides is large. The side effects are relatively large for human health, ecological environment, soil properties, and crops. Invention content: [0003] The purpose of the present invention is to overcome the above-mentioned disadvantages and provide an environmentally friendly pesticide for vegetables, which uses natural Chinese herbal medicines or plants as raw materials, is highly efficient and ha...

AI Technical Summary

Problems solved by technology

[0002] In order to improve crop yield, quality, and obtain a good harvest, pesticides are indispensable, but the use of pesticides also has some substantial deficiencies, especially in the control of cabbage bugs, radish aphids, cabbage armyworms, beet armyworms, and cutworms. Most of the pesticides for insects and other pests are chemical pesticides at present, and the effect of eliminating pests is not good if the dosage is small, and the residual amount of the pesticide is large, which has great side effects on human health, ecological environment, soil properties, and crops.