Bactericide composition

Abstract

The invention relates to a prepared bactericide composition. A component A is selected from hymexazol, a component B is selected from metalaxyl and a component C is selected from prochloraz. The bactericide composition has an obvious synergism effect, and can prevent and cure both bakanae disease and damping off and the like of rice in seedling stage for once use.

Description

technical field [0001] The invention belongs to the field of agricultural fungicides, in particular to a fungicide composition. Background technique [0002] In the prior art, the fungicides used in my country to prevent and treat rice seedling diseases mainly include prochloraz for soaking seeds, and hymexyl and metalaxyl for splashing on seedbeds. Prochloraz is used for soaking rice seeds before sowing. The method of use is simple, but it can only control rice bakanae disease, and has no effect on rice blight. Hymexyl and metalaxyl are generally used for spraying or spraying on rice seedbeds. They are effective against rice seedling blight, but have no effect on bakanae disease. [0003] For this reason, Chinese Patent No. 102417386A, which is published in the name of "Fungicide Composition Containing Zinc Thiazole", proposes a solution. The composition contains thiazole zinc and any one selected from kysstrobin, pyraclostrobin, azoxystrobin, trifloxystrobin, enoxostrobi...

AI Technical Summary

Problems solved by technology

Since the combination of thiazole zinc with prochloraz or hymexazol can only remove Ascomycetes or Pythium and Fusarium, it cannot achieve the ideal bactericidal effect on Pythium, Phytophthora and various Fusariums, so this combination There are also certain problems in the sterilization of biological substances; in addition, although this composition also uses the technology of combining thiazole zinc and metalaxyl, and metalaxyl has a good control effect on Pythium and Phytophthora, but the single agent of metalaxyl The activity against bakanae disease of rice seedlings is very low. When the treatment concentration is 400mg / L, the antibacterial activity is less than 10%. Therefore, the bactericidal effect of metalaxyl on Ascomycetes or Pythium and Fusarium is not ideal

[0004] In summary, even though rice seedlings contain a relatively large amount of Ascomycetes or Pythium and Fusarium, which can easily cause bad mildew or blight, they also contain relatively small amounts of other fungi, such as Pythium, For Phytophthora and various Fusarium species, if fungicides are used only to prevent them from being infected by a large amount of bacteria, while ignoring the infection by a small amount of bacteria, it is easy to cause other diseases on rice seedlings

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