Composition for efficiently controlling rice blast, and application method of composition

Abstract

The invention discloses a composition for efficiently controlling rice blast, and an application method of the composition, and belongs to the technical field of agricultural biological control. The composition for efficiently controlling the rice blast is prepared from the following raw materials in parts by weight: 10-20 parts of probenazole, 5-10 parts of bacillus subtilis, 5-10 parts of activeingredient extracts of Chinese herbal medicines and 8-15 parts of a surfactant. The composition provided by the invention combines a chemical inducer, a microbial preparation and active ingredients of Chinese herbal medicines; the rice blast controlling effect of the composition is remarkably improved through a synergistic effect of the raw materials; by inoculating rice with magaporthe grisea ata seedling stage in a greenhouse, the rice blast controlling effect of a product disclosed by the invention is determined; the result show that the controlling effect of the product disclosed by theinvention on rice leaf blast and rice panicle blast is 84% or above; the product disclosed by the invention is environmentally friendly; and all the selected raw materials are free from secondary pollution to the environment, and insecticide resistance is not caused, so that the composition disclosed by the invention is convenient for large-scale popularization and application, is a best way for controlling the rice blast, and has an important significance of promoting agricultural sustainable development.

Description

technical field [0001] The present invention relates to a composition and application method for effectively preventing and treating rice blast, in particular to a green and environmentally friendly composition that can effectively prevent and treat rice blast and is prepared by comprehensively utilizing chemical inducers, microbial agents and functional active substances of Chinese herbal medicines , belongs to the technical field of agricultural biological control. Background technique [0002] Rice is the main food crop in my country and occupies an important position in agricultural production. It has become the most widely planted food crop in my country. The prevention of its diseases is of great significance to increase rice production. Rice blast is a devastating disease caused by the fungus Magnaporthe oryzae on rice. It occurs to varying degrees every year. In popular years, rice production can generally be reduced by 10% to 20%, and in severe cases it can reach 40...

AI Technical Summary

Problems solved by technology

In summary, at present, the control of rice blast is still dominated by chemical agents. Although it is disclosed that Chinese herbal medicine extracts and Bacillus subtilis have certain effects on inhibiting rice blast, there is no chemical inducer or microbial agent in the prior art. And the technical enlightenment of functional active substances of Chinese herbal medicine synergistically preventing rice blast

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