论文部分内容阅读
[目的]探索烯肟菌胺与噻呋酰胺防治水稻纹枯病的效果及剂量。[方法]采用Sun-Johnson法测定室内联合毒力,并验证30%烯肟菌胺·噻呋酰胺SC对水稻纹枯病的防效。[结果]烯肟菌胺与噻呋酰胺对水稻纹枯病菌的EC50值为0.352、0.083 mg/L,烯肟菌胺与噻呋酰胺5∶1~1∶5五个配比具有显著的增效作用;田间药效试验表明,30%烯肟菌胺·噻呋酰胺SC 76~92 g a.i./hm2的用量对水稻纹枯病有较好的防治效果。[结论]30%烯肟菌胺与噻呋酰胺SC用于防治水稻纹枯病,有较好的防治效果。
[Objective] The research aimed to explore the effects and the dosages of propoxides and thifluzamide in the control of rice sheath blight. [Method] The indoor combined virulence was determined by Sun-Johnson method and the control effect of 30% thifluzamide SC on rice sheath blight was verified. [Result] The EC50 values of netilmicin and thifluzamide to Rhizoctonia solani were 0.352,0.083 mg / L, and the five ratios of 5 - Synergism; field efficacy tests showed that 30% of the thifluzamide 30% of the SC 76 ~ 92 g ai / hm2 the amount of rice sheath blight have a good control effect. [Conclusion] Thirty percent synergistic effect of 30% thifoximete and thifluzamide SC was used to control rice sheath blight.