Water-soluble compound pyrethrin, manufacturing method and application thereof in field of hydroponic plant cultivation

Abstract

The invention discloses a water-soluble compound pyrethrin, a manufacturing method and application thereof in the field of hydroponic plant cultivation. The pyrethrin comprises two components: a compound A and a compound B, wherein the component A is finally obtained by taking ethyl chrysanthemate, pyridine, an aqueous solution of ammonium bicarbonate with a mass concentration of 10%, nickel powder, deionized water, trans-dichlorochrysanoyl chloride and allyl alcohol ketone as raw materials, taking methylbenzene, dilute hydrochloric acid with the mass concentration of 10% and a sodium hydroxide solution with the mass concentration of 10% as auxiliary materials, and subjecting the materials to two-stage polycondensation, extraction, alkali washing, pickling, neutralization and dehydration;the component B is fermented broth obtained by taking corn starch, soybean cake powder and rice bran as the raw materials, and filtering the solid content after fermentation under the action of a bacillus licheniformis agent with the bacterial concentration being 1*10<8> cfu / ml-1*10<9> cfu / ml. The water-soluble compound pyrethrin has the technical effects of being non-toxic to a human body, killing both adults and larvae, achieving self-degradation, curing target pests and containing complex compound nutrients.

Description

technical field [0001] The invention relates to the technical field of mosquito control, in particular to a water-soluble compound pyrethrin, a production method and its application in the field of hydroponic plant cultivation. Background technique [0002] Hydroponics is a developing industry in China. Bioengineering technology uses physical, chemical and biological engineering methods to domesticate vegetables and flowers. Because of the convenience of cultivation and care, cheap price, cleanness, healthy growth of flowers and leaves, and high space utilization rate, the current market scope is showing a geometric trend of expansion. Hydroponics is to put plants in a nutrient solution, which is formulated through professional hydroponic technology. Plants are cultivated through artificial training or seedling cultivation, and the survival rate is as high as 95%, which can greatly save the cost of seedling cultivation. In addition, the hydroponic liquid is different from s...

AI Technical Summary

Problems solved by technology

Its disadvantage is mainly that it is highly toxic to fish, and it is also harmful to some beneficial insects. Long-term repeated use will also lead to resistance of pests

[0004] Commonly used permethrin can only kill adults but not larvae or eggs, resulting in repeated occurrence of insect pests, and the drug resistance of daughters will become stronger and stronger, unable to cure insect pests. Its main disadvantage is its high toxicity to fish , it is also harmful to some beneficial insects, which also limits the promotion of conventional mosquito killers