摘要
采用菌丝生长速率法测定异菌脲、氯溴异氰尿酸、丙森锌、苯醚甲环唑、醚菌酯、烷基腈氧基醌、腐霉利7种杀菌剂及其复配剂对番茄早疫病菌的抑制作用。结果表明．不同杀菌剂单剂对番茄早疫病菌均有明显的抑制作用。异菌脲、氯溴异氰尿酸、丙森锌、苯醚甲环唑、醚菌酯、烷基腈氧基醌、腐霉利单剂浓度为0．01～5．00mg／L时．对茄链格孢属菌丝生长抑制率分别为76．15％～100％、8．76％～17．97％、2．01％～70．92％、71．82％～100％、51．35％-71．59％、42．46％～93．87％、32．16％-91．76％；EC50分别为0．03352、77．88650、2．26814、0．72380、0．04956、0．018972、0．018175mg／L。当复配剂异菌脲和腐霉利按质量比2：l，腐霉利和苯醚甲环唑按质量比1：2、2：1．腐霉利和醚菌酯按质量比1：1、l：2．苯醚甲环唑和醚菌酯按质量比1：l、1：2、2：1，异菌脲和苯醚甲环唑按质量比1：2时，均有明显增效；当异菌脲和苯醚甲环唑按质量比2：1时，略有增效；当异菌脲和腐霉利按质量比1：1．腐霉利和苯醚甲环唑按质量比1：1．异菌脲和苯醚甲环唑按质量比1：1时．均有相加作用。
In laboratory, the toxicity effects of seven commercial fungicides including Procymidone etc and their mixtures which had better preventive efficiency on A lternaria Salani were determined by measuring mycelial growth rate were teste. The results showed that each fungicide has obvious inhibitory effect on mycelial growth of Alternaria Salani. In a wide range of fungicide concentrations（0.01-5.00mg/L）,the inhibition ratio of Iprodione,Chlorobromoisocyanuric acid,Propineb, Difenoconazole, Kresoxim-methyl, Alkyl nitriles methoxy quinone and Procymidone single agent were 76.15%-100%,8.76%-17.97%,2.01%- 70.92%,71.82%-100%,51.35%-71.59%,42.46%-93.87%,32.16%-91.76%;The EC50 values were 0.033 52,77.886 50,2.268 14, 0.723 80,0.049 56,0.018 972,0.018 175 mg/L;The mixtures of Iprodione and Procymidone with ratio of l：l,Procymidone and Difenoconazole with ratio of l：2,2：l,Procymidone and Kresoxim-methyl with ratio of 1：1,1：2, Difenoconazole and Kresoxim- methy with ratio of l：l,l：2,2：l,Iprodione and Difenoconazole with ratio of 1：2 have particularly obvious synergistic effect.The mixtures of Iprodione and Difenoconazole with ratio of 2：1 have obvious synergistic effect;Iprodione and Procymidone have obvious synergistic effect l：l,Procymidone and Difenoconazole have obvious synergistic effect l：l,Iprodione and Difenoconazole with ratio of 1：1 have slightly synergistic effect.
出处
《湖北农业科学》
2015年第13期3142-3145,3149,共5页
Hubei Agricultural Sciences
基金
国家自然科学基金项目(40901125)
