关键词: 水稻, 恶苗病, 氰烯菌酯, 抗药性, 防效

Abstract: The causes of rice bakanae disease in Hangzhou area in 2019 were analyzed in this study. The results showed that the high strain rate of rice seeds and the resistance to cyanide bacteria ester were the main reasons for its occurrence. Field experiments showed that, 4.23% metalaxyl· ipconazole ME with 400 and 600 times liquid, 25% prochloraz EC 2000 times liquid, 5% prochloraz EC 2000 times liquid plus 25% cyanide ene bacteria ester suspending agent 2000 times mixed soaking seeds for 48 h have better controll efect, significantly better than 25% cyanenide SC 750 times and 2000 times liquid. It is suitable for rotation application in severe and high resistance to cyanide bacteria ester to control the occurrence of bakanae disease.

Key words: rice, bakanae disease, cyanenide, resistance, control