Botanical insecticide its preparation method
A technology of plant insecticides and insecticides, applied in botany equipment and methods, plant growth regulators, biocides, etc., can solve problems such as human damage, easy resistance of animals and plants, and environmental pollution, and achieve Safe and convenient to use, easy to degrade naturally, and non-polluting to the environment
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[0007] During preparation, Chinese herbal medicinal plants should be carefully selected first, and each raw material should be a pure dry product, so as to avoid mildew, insects, discoloration, taste, and deterioration of fake and inferior products, that is, select raw materials according to routine.
[0008] The preparation process of concentrated tobacco venom is as follows: the raw materials are dried or dehydrated in other ways and then crushed into 1-6mm blocks, strips, sheets or other shapes, and the crushed raw materials are soaked in water with a temperature above 20°C for 20-48 hours. The weight ratio of raw material to water is 1:4, then use a centrifuge to dehydrate, press a filter press to filter out the active ingredients with a specific gravity of 2800-3000 mesh and a specific gravity of 0.02-0.04, and then concentrate and refine the filtrate in a reaction kettle for 3-4 hours. 90-110°C, that is, to obtain a concentrated mother liquor with a specific gravity of 0....
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