Pesticide for preventing and controlling cotton diseases and insect pests and preparation method thereof

Abstract

The invention relates to a pesticide for preventing and controlling cotton diseases and insect pests .The pesticide is prepared from, by weight, 15-19 parts of diflubenzuron, 4-8 parts of cosolvent, 5-9 parts of wetting dispersing agent, 2-5 parts of polyvinyl alcohol, 1-4 parts of antifreezing agent, 0.5-3 parts of thickening agent, 0.3-1 part of defoaming agent, 11-15 parts of water, 1-3 parts of radix notoginseng extract, 0.5-2 parts of thiophanate-methyl, 0.5-2 parts of isocorydine and 1-3 parts of calcium superphosphate .A preparation method of the pesticide for preventing and controlling the cotton diseases and insect pests is characterized by comprising the following steps of radix notoginseng extract preparing, weighing and mixing .The pesticide for preventing and controlling the cotton diseases and insect pests has the advantages that the preventing and controlling effect on the insect pests in a cotton field is good; the pesticide is free of side effect to cotton and high in safety; the boll number per plant, the single boll size and the single boll weight of the cotton are significantly increased; the per mu yield of the cotton is significantly increased; the breaking strength ratio of cotton fibers is significantly increased, and the length regularity index range of the cotton fibers is significantly widened; the morbidity of cotton diseases is reduced.

Description

technical field [0001] The invention relates to an insecticide, in particular to an insecticide for preventing and controlling cotton diseases and insect pests and a preparation method thereof, belonging to the technical field of agricultural diseases and insect pests prevention and control. Background technique [0002] Panax notoginseng, the name of traditional Chinese medicine. It is mainly produced in Wenshan Prefecture, Yunnan, so it is named Wenshan Sanqi, also known as Wenzhou Sanqi, which is the dry root and rhizome of Panax notoginseng (Burk.) F.H.Chen, a plant of Araliaceae. Perennial herb, up to 60cm. The rhizome is short, the stem is erect, smooth and glabrous. Palmately compound leaves with long stalks, 3-4 whorls on the top of the stem; leaflets 3-7, elliptic or oblong-obovate, with finely serrated margins. The umbel is terminal, and the peduncle is drawn out from the center of the stem top, 20-30cm long. Flowers are small, yellow-green; calyx 5-lobed; peta...

AI Technical Summary

Problems solved by technology

[0006] (1) The application of existing chemical pesticides in the cotton planting process: spraying after the emergence of cotton seedlings, this treatment method is not ideal for the control of pests in cotton fields, and the pertinence is not strong;

[0007] (2) Existing chemical pesticides are used to control pests in cotton, which have certain side effects on cotton, poor safety, and have a certain inhibitory effect on its growth, thereby reducing crop yield;

[0008] (3) Existing chemical pesticides only have a control effect on cotton pests and have no effect on cotton diseases

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