木霉菌株分离筛选及对茄子黄萎病防治作用的研究

摘要

Eggplant Verticillium wilt are widely distributed ,the incidence are more than 50% commonly ,it is a kind of important disease in eggplant production .In order to test the control effect of screening strains ,the sep‐aration and screening of Trichoderma were conducted in the disease nursery for 13 years eggplant grafting and rotation field in rhizosphere soil ,15 strains were obtained ,2 strains with strong antagonism M113 and M135 were screened out ,the bacteriostatic rate were 48 .36% and 56 .13% respectively .Indoor pot experiment results showed that the relative control effect were 70 .53% and 74 .68% ,which were significantly higher than chemi‐cal prevention and control .%茄子黄萎病分布广泛，发病率一般为50％以上，是生产上的一种重要病害。为初步检测筛选的木霉菌株对茄子黄萎病的防治效果，在茄子嫁接、连作13 a的茄子病圃及轮作田的根际土壤进行木霉菌株的分离筛选，得到15株菌株，筛选出2株拮抗效果较强的菌株M 113和M 135，抑菌率分别为48．36％和56．13％。室内盆栽试验相对防效为70．53％和74．68％，显著高于化学药剂防治。