百合灰霉病高效杀菌剂的筛选和联合作用研究  

Screening and Combined Action of Efficient Fungicides for Controlling Lily Botrytis cinerea

作　　者：朱丽梅[1] 张长青[1] 陈浩[1] 陆慧[1] 

机构地区：[1]金陵科技学院园艺学院,江苏南京210038

出　　处：《金陵科技学院学报》2011年第1期51-54,共4页Journal of Jinling Institute of Technology

基　　金：国家863项目(2006AA100109);校内立项基金项目(jit-n-201001)

摘　　要：在室内采用菌丝生长速率抑制法测定了6种杀菌剂对百合灰霉病菌的毒力。结果表明:1)异菌脲,百菌清,多菌灵,苯霜灵,已唑醇,腈菌唑6种原药对百合灰霉病菌的EC50值分别为130.7528、1.2479、3.9247、34.524 0、7.9625和10.1775 mg/L。其中,百菌清的毒力最高,其EC50为1.2479 mg/L,多菌灵次之,其EC50为3.924 7 mg/L,异菌脲的毒力最低,其EC50为130.7528 mg/L。2)不同配比的的腈菌唑和异菌脲混剂均对百合灰霉病菌有抑菌活力,但不同配比,对百合灰霉病菌的抑制率不同,当m(腈菌唑)与m(异菌脲)的配比为2∶8时,菌丝的菌落直径最小,抑菌效果最佳,为最佳配比。3)测定异菌脲和腈菌唑混剂对百合灰霉病菌的毒力回归,并计算EC50,以异菌脲为标准杀菌剂,计算各复配剂的共毒系数,m(异菌脲)和m(腈菌唑)以2∶8的配比混配,其共毒系数为130大于100,具有明显的增效作用。The toxicity of six fungicides on Botrytis elliptica has been tested by means of mycelia growth rate inhibition in the lab.The EC50 of the six fungicides（iprodione,chlorothalonil,carbendazim,benalaxyl,hexaeonazole and myclobutanil） to Botrytis elliptica（Berk.） Cooke.are 130.7528,1.2479,3.9247,34.5240,7.9625 and 10.1775 mg/L respectively.Among them,chlorothalonil has the strongest toxicity on Botrytis elliptica,carbendazim has the second toxicity,and iporodione has the worst toxicity on Botrytis elliptica.The mixtures at different ratios between iprodione and myclobutanil have been tested.The results show that the mixture of myclobutanil and iprodione at different ratios have different inhibition on Botrytis elliptica,and at the ratio of 2∶8,the mixture of myclobutanil and iprodione has the highest inhibition activity.The co-toxicity coefficient of myclobutanil and iporodione has also been tested on Botrytis elliptica.When the co-toxicity coefficient of the mixture of myclobutanil and iprodione is 130,it has significant synergism.

关 键 词：百合灰霉病 毒力 杀菌剂 增效作用 筛选 

分 类 号：S436.412.13[农业科学—农业昆虫与害虫防治]