Broad-spectrum insecticide prepared by Chinese herbal medicine and production method thereof

Abstract

The invention discloses a broad-spectrum insecticide prepared by Chinese herbal medicines and a production method thereof; eight toxic Chinese herbal medicines are selected, including arisaema, pinellia ternate, climbing aconite, omphalia, sophora flavescens ait, pyrethrum, croton, rhizomatum; the production method comprises the following steps: cleaning the medicines separately, drying, pulverizing the medicines, performing low-temperature supercritical extraction, filtering, purifying the medicines by column chromatography, concentrating, well mixing, filling the mixture into bottles, performing sterilization, warehousing after qualification, and storing at a low temperature. The production method of the invention adopts effective insecticidal ingredients obtained after low-temperature supercritical extraction and purification, and prepares the preparation by mixing, and the insecticide of the invention has greatly improved insecticidal effect with little using amount. The insecticide of the invention is applicable to large-scale production, has low cost, adopts pure natural raw materials with no environmental pollution, has guaranteed food safety, and has quite high popularization value.

Description

technical field [0001] The invention relates to the technical field of a biological agent pesticide with killing effect on various insects, in particular to a broad-spectrum insecticide made from Chinese herbal medicine and a production method thereof. Background technique [0002] Chemical pesticides are an important means for humans to prevent and control diseases and insect pests, reduce crop losses, and ensure food supply. They will play a huge role now and in the future. However, pesticide residues not only directly affect food safety, but also lead to soil damage and environmental pollution, which has become an important hidden danger to human survival. [0003] Insecticide preparations made of Chinese herbal medicines have been studied and put into practice in disease and pest control as early as the 1970s in my country, but their promotion has been slow. The reasons are that first, the basic research on the insecticidal mechanism of Chinese herbal medicine is insuff...

AI Technical Summary

Problems solved by technology

The reasons are that first, the basic research on the insecticidal mechanism of Chinese herbal medicine is insufficient; second, the formula is simple, and the insecticidal effect is not significant; third, the production stagnates in the workshop stage, the production cost is high and it is difficult to form a scale; There are many impurities and the insecticidal effect is poor; fifth, domestic productivity and living standards were low in the last century, the total amount of food was insufficient, food safety has not yet attracted great attention, and the market demand for Chinese herbal medicine insecticides is small

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