Botanical medicament used for preventing and controlling spider mites, and use method thereof

Abstract

The invention relates to a botanical medicament used for preventing and controlling spider mites, and a use method thereof. The raw material of the botanical medicament is an extract liquid of Herba Schizonepetae, poplar leaf and argy wormwood. The extract liquid comprises an antiseptic. Rhizomes and leaves of Herba Schizonepetae, poplar leaf and argy wormwood are adopted as raw materials and are juiced to obtain the extract liquid, the extract liquid is diluted with water, and the diluted extract liquid is sprayed on greenhouse crops in order to realize a prevention effect when no spider mites exist in the crops and realize a very good control effect when the spider mites exist in the greenhouse crops; a field test result shows that the prevention and control effect reaches 99.5% or above; the extract liquid can prevent and control the spider mites, and also can obviously prevent and control aphids, thrips and other piercing and sucking pests; and Herba Schizonepetae, poplar leaf and argy wormwood are edible and medicinal wild plants, so drug residual and environmental pollution problems do not appear in the practical use process, thereby harms of pests are reduced, and the yield increases by about 6-10%.

Description

technical field [0001] The invention belongs to the technical field of crop pest control, in particular to a plant-derived medicament for preventing and controlling spider mites and an application method thereof. Background technique [0002] In recent years, spider mites (red spider mites) have become one of the important pests that harm greenhouse crops and vegetables. Commonly damaged crops include strawberries, eggplants, cucumbers, tomatoes, peppers, cowpeas, beans, watermelons, etc.; it mainly harms the leaves, tender stems, flowers, etc. of plants. Chlorosis turns whitish, dense pale spots appear on the leaf surface, curling and yellowing the leaves. In severe cases, the plants will have yellow leaves, scorched leaves, rolled leaves, fallen leaves and death. At the same time, spider mite is also the carrier of various plant virus diseases. [0003] Tetranychus are small individuals, generally less than 1 mm in length, and nymphs can be less than 0.2 mm, but their f...

AI Technical Summary

Problems solved by technology

[0010] In the above-mentioned methods, drug deworming is active control, and the others are auxiliary methods. However, a large amount of chemical agents are used for control, which will cause a large amount of drug residues in crops, and the control effect is not very good.