Screening test of pesticides for the prevention and control of rice bakanae disease
Rice bakanae disease is an important rice disease.Six agents were selected for the screening test,and the soaking test of 200 g·L-1 fluazole hydroxylamine suspension,the safety of 25%prochloraz aqueous emulsion and 25%cyanostrobin suspension was evaluated by indoor germination rate measurement and other tests.The results showed that the mixed soaking of 25%prochloraz aqueous emulsion and 25%cyanostrobin suspension in barrels for 48 h had an inhibitory effect on the growth of hybrid rice shoots and roots,but had no significant effect on the germination rate.The results of the screening test showed that the control effect of each treatment was unstable for 2 years,but the control effect of 25%cyanostrobin suspension was not good,and the control effect of 0.3%tetramycin aqueous solution was relatively good.200 g·L-1 fluazole hydroxylamine suspension 500-8000 times had a good control effect,which was significantly better than the control agent 25%cyanostrobin suspension.No disease was found in any of the plots after 500 and 1000 times of 200 g·L-1 fluazole hydroxylamine suspension treatment.0.3%tetramycin aqueous solution and 200 g·L-1 fluazole hydroxylamine suspension can be used for the prevention and control of rice bakanae disease.
NETL
NSTL
万方数据
维普
