a plant protection agent

Abstract

The invention discloses a plant protection agent, which is prepared by coordination and complexation of Xanthomonas exopolysaccharide and copper inorganic salt, or by coordination and complexation of Xanthomonas exopolysaccharide and zinc inorganic salt. Or the Xanthomonas exopolysaccharide is coordinated and complexed with copper inorganic salt and zinc inorganic salt; specifically, the composition is composed of the following weight percentages: Xanthomonas exopolysaccharide 0.5-1.0%, copper sulfate 0.5% ~1.0%, zinc sulfate 0.5~1.0%, polyethylene glycol-4000 1%, polyvinyl alcohol 2%, polyvinylpyrrolidone 1%, distilled water 93.0~95.0%. The present invention overcomes the problem of poor mixing properties of inorganic copper preparations, so it is sprayed on the surface of crops to form a dense protective drug film, which can slowly release copper and zinc ions as plant nutrition, thereby ensuring that the "copper content" in the preparation is low, and overcomes the problem of The problem of copper damage caused by improper use of inorganic copper preparations or the aggravation of mite infestation has been solved.

Description

technical field [0001] The invention relates to the prevention and control technology of plant diseases and insect pests of agricultural and forestry plants, in particular to a protective agent for agricultural and forestry plants. Background technique [0002] The scientific concept of plant protection is "prevention before treatment, prevention first". Before the pathogens infect the host, or in the early stage of the pest, if the protective agent is applied on the surface of the host in advance, it can protect or prevent the crops from being infected by the pathogen, and at the same time prevent the occurrence of the pest. [0003] The disease prevention feature of protective fungicide is that it can form a dense protective film on the surface of crops that is air-permeable, water-permeable and light-transmitting. This protective film can inhibit the germination and invasion of germ spores, so as to achieve the goal of crop sterilization and disease prevention. Effect; a...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a plant protection agent, which can avoid the poor compatibility of inorganic copper preparations, and avoid the problem of aggravated copper damage caused by improper use of inorganic copper preparations.

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