Rice blast is the most important worldwide rice disease, and chemical control is currently the most effective prevention and control measure. In recent years, researchers from the China Rice Research Institute and other units have tested the effects of multiple special effects agents and broad-spectrum agents on rice blast by means of indoor bioassay and field trials, and discussed the optimal control period for rice blast. And the possibility of prevention of panicle neck and rice smut.
The results show that tricyclazole is still a special fungicide for the prevention of panicle cervix , and a wide-spectrum fungicide such as azoxystrobin, trifloxystrole and tebuconazole and difenoconazole is better for spider mites. The effect of prevention and control. The ear-starting stage is a key period for the prevention and treatment of panicle-necked ticks. It is necessary to apply one more drug at the heading stage in the case of severe morbidity. If a suitable agent is selected, the application before the breakage also has a certain effect on the prevention and control of the panicle. Since the best application period for controlling rice false smut is before the break, it is feasible to apply the drug once and prevent the neck and rice smut.
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