关键词: 籼粳杂交稻, 稻曲病, 防治药剂, 防治时期

Abstract:

We conducted a comparative experiment on the control efficiency of different agents on rice false smut of Yongyou 12 in 6 different growth periods in 2017. The results showed that the best control period was 16 days before the rupturing stage, when 10% to 20% flag leaves of the plants were fully expanded, the correction control effect was 95.54%. If the time was put off, the control effect would be gradually declined. If the time was advanced to 21 days before rupturing stage, the control effect was not ideal, too. Thus, it is preferable to control rice false smut of indica and japonica hybrid rice on the 16 day before rupturing stage, when 10% to 20% flag leaves of the plants were fully expanded, and 30% difenoconazole propiconazole EC has better control effect.

Key words: indica and japonica hybrid rice, rice false smut, control agent, control period