Biological insecticide used for lettuces and preparation method thereof

Abstract

The invention discloses a biological insecticide used for lettuces and a preparation method thereof. The biological insecticide comprises the following components by weight percent: 8-13% of fresh ginger extract, 10-15% of garlic extract, 5-12% of ailanthus altissima (mill.) swingle bark extract, 12-15% of bitter apricot seed extract, 6-15% of spina gleditsiae extract, 8-20% of white pepper extract, 4-10% of azadirachtin extract and 10-20% of berberis thunbergii DC. extract.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a preparation method of a biopesticide for lettuce Background technique [0002] The main pests of lettuce are mainly Tetranychus urticae and aphids. Tetranychus urticae mainly cluster on the back of the leaves of the host, and a few suck juice on the front of the leaves. In severe cases, the leaves dry up and fall off, and even cause the plant to die. When the population density is very high, a large number of insect bodies gather at the top of the leaves and shoots, forming light pink balls, the big ones are like peanuts. At this time, the plants are often nearly dry and dead. Due to the high drug resistance of Tetranychus urticae, it should be prevented and controlled in the early stage of occurrence. In order to improve the control effect, synergists or washing powder can be mixed in the liquid medicine, and the spraying method can be used. spraying. At present, chemic...

AI Technical Summary

Problems solved by technology

At present, chemical pesticides are mainly used for the prevention and control of insect pests, which are harmful to the human body. The use of biopesticides is of great significance. At present, the research on biopesticides for lettuce has not been reported.