摘要
采用生长速率法在室内测定了6种杀菌剂对棉花立枯丝核菌(Rhizoctonia solani)的毒力作用.结果表明,6种杀菌剂对棉花立枯丝核病菌菌丝生长均有一定的抑制作用,其中甲基立枯磷对立枯丝核菌的抑菌效果最佳,抑制中浓度(EC50)为0.042 mg/kg,其次为多菌灵,EC50为0.044 mg/kg.相关分析表明药剂浓度与抑制作用呈正相关.
Toxicity measurement of 6 fungicides on Rhizoctonia solani was studied by measuring growth rate of pathogen in vitro. The results showed that all of the 6 fungicides inhibited the solani. Among them, Tolclofos methyl showed the best, EC50 was 0. 042 mg/kg. Then was growth of R. Carbendazim, EC50 was 0. 044 mg/kg. A significant positive correlation was found between the fungicide concentration and inhibition.
出处
《甘肃农业大学学报》
CAS
CSCD
2007年第6期99-101,共3页
Journal of Gansu Agricultural University
关键词
杀菌剂
立枯丝核菌
毒力
fungicides
Rhizoctonia solani
toxicity
