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试验结果表明,75%肟菌.戊唑醇WG对水稻穗瘟、稻曲病、纹枯病等主要病害均具有较好的防治效果,用药量150g/hm2,水稻破口前3d、齐穗期各防治1次,对水稻穗瘟防效最高;水稻破口前13d、齐穗期各防治1次,对稻曲病防效最高;各时期施药对水稻纹枯病防效均较好。防治水稻穗瘟、稻曲病、纹枯病等主要病害,一般发生年份,以水稻破口前5~7d第1次施药、水稻齐穗期第2次施药较好;防治感稻瘟病的水稻品种,以水稻破口前3d第1次施药、水稻齐穗期第2次施药较好;防治感稻曲病的水稻品种,以水稻破口前10~15d第1次施药、水稻齐穗期第2次施药较好。
The results showed that 75% tenfloxacin and tebuconazole WG had good control effects on the main diseases of rice panicle blast, rice false smut and sheath blight. The dosage of 150 g / hm2, The results showed that the control effect on rice false smut was the best, and the control effect on rice sheath blight was better at different times. . Prevention and treatment of rice panicle disease, rice false smut, sheath blight and other major diseases, the general occurrence of the year before the break 5 to 7d rice first application of pesticides, the second full-heading rice spraying is better; control of rice blast Of the rice varieties, the first application of pesticides 3 days before rice breaking, the second spraying of rice at full heading is better; control of rice varieties susceptible to rice false smut, 10-15 days before rice breaking the first application The second application of rice in heading stage is better.