安徽农业科学2011，Vol.39Issue(19)：11496-11498,3.
甲霜灵与其他杀菌剂复配对烟草黑胫病菌联合毒力测定
Combined Toxicity Test of Complex Preparations of Metalaxyl and Other Fungicides against Phytophthora parasitica var. nicotianae
摘要
Abstract
[ Objective ] To overcome the resistance of Phytophthora parasitica var. nicotianae towards metalaxyl and effectively eontrol its damage,new efficient complex agent of metalaxyl was studied and developed. [ Method ] The toxicities of nine fungicides against P. parasitica were meastned using growth rate method. On this basis,the fungicides with good effects were selected to complex with metalaxyl ,and the optimum complex ratio was confirmed. [ Result ] The toxicity of metalaxyl was the strongest with EC50 of 2. 130 5 μg/ml ;followed by Carbendazim, Mancozeb and Dimethomorph with EC50 of 2. 357 9,2.639 8 and 2.778 8 μg/ml. The effect of Cyazofamid was the poorest with EC50 of 6. 278 08 μg/ml. The optimum complex ratios of Dimethomorph,Carbendazim and Mancozeb with metalaxyl were 40:60,30:70 and 20:80, and their co-toxicity coefficients were 138.80,124.25 and 115.00,respectively. [ Conclusion ] The complex had application and promotion value, which could be used to carry out further field trials.关键词
烟草黑胫病菌/甲霜灵/复配/毒性Key words
Phytophthora parasitica var. nicotianae / Metalaxyl/ Complex /Toxicity分类
农业科技引用本文复制引用
刘铭..甲霜灵与其他杀菌剂复配对烟草黑胫病菌联合毒力测定[J].安徽农业科学,2011,39(19):11496-11498,3.基金项目
四川省教育厅重点项目"凉山州烟草黑胫病生理小种研究及四川烟草种质资源的杭性评价"(08ZA032). （08ZA032）
