Bactericide composition for preventing controlling rice diseases, and application thereof

Abstract

The invention belongs to the field of pesticide compounding, and concretely relates to a bactericide composition for preventing and controlling rice diseases, and a preparation method and an application thereof. The bactericide composition adopts difenoconazole-propiconazole and a bacillus suspension as active components, wherein a weight ratio of the difenoconazole-propiconazole to the bacillus suspension is (0.01-1):(0.1-80), and the active components account for 0.01-25% of the total weight of the bactericide composition. The bactericide composition prepared by a high-efficiency process issprayed on leaves in the early stage of a rice disease, and is diluted when applied in order to make the concentration of the active components be 1-100 ppm. The bactericide composition obtained afterblending the difenoconazole-propiconazole with the bacillus suspension according to a certain ratio has the advantages of significant synergistic effects, alleviation of the pesticide resistance of rice, small toxicity and residual quantity, induction of the disease resistance of the rice, good nitrogen fixation and plant growth promotion effects, and significant prevention and control effects onrice blast, false smut and rice sheath blight.

Description

technical field [0001] The invention belongs to the field of pesticide compounding, and in particular relates to a fungicide composition for preventing and treating rice diseases, a preparation method and application thereof. Background technique [0002] Rice is one of the most important food crops in the world, and more than half of the world's population feeds on rice. Rice planting area accounts for about 20% of the world's total grain planting area. The serious rice diseases in the world include rice blast, rice false smut, and rice sheath blight. Among them, the incidence of rice blast spreads all over the world. Rice blast not only reduces the yield of rice, but also has a great impact on the quality of rice. Rice blast mainly damages leaves, stems and ears. Seedling blast occurs in front of the three leaves and is caused by seed infection. The base of the diseased seedlings is gray and black, and the upper part turns brown, shrinks and dies. When the humidity is ...

AI Technical Summary

Problems solved by technology

[0005] At present, the three diseases often overlap in rice production, but the pesticides against one of the diseases are often unsatisfactory for the other two diseases, and the repeated application of pesticides increases the occurrence of resistance and the large amount of pesticide residues. risk