复合拮抗菌对马尾松幼苗猝倒病的生物控制  

Biological Control of Pinus massoniana Seedling Damping-off with Complex Antagonistic Microbes

作　　者：刘富平[1] 朱天辉[2] 

机构地区：[1]海南大学海洋学院,海南海口570228 [2]四川农业大学林园学院,四川雅安625014

出　　处：《海南大学学报（自然科学版）》2008年第2期149-152,共4页Natural Science Journal of Hainan University

基　　金：海南大学自然科学基金资助

摘　　要：盆栽试验结果表明:用坚强芽孢杆菌B-305菌株的发酵液浸泡马尾松种子和在灭菌土中施入不同量的绿粘帚霉的厚垣孢子粉剂,对马尾松幼苗在出苗前和出苗后的发病率都有明显影响,并能使病害得以减轻;防病效果随施入土壤中的厚垣孢子量的增加而加强;同时进行种子细菌化和施入厚垣孢子的处理的防病效果要高于各单独处理,防病效果最高达到61.2%;2种生物拮抗菌对松苗都有促生作用,其中联合处理与对照相比,松苗高生长最大可提高57%;生物防治持效期试验(半年后重新播种)显示,复合拮抗菌处理的防病效果仍然最高,但绝对值有所下降,为55.6%.The results of potted plant experiment showed that bacterization of seeds with B -305 cell suspension and chlamydospore powder of different weight applied to sterile soil had significant effect on incidence of Pinus massoniana damping-off. The more chlamydospore powders, the greater controlling effect was strengthened. The controlling effect of complex antagonists was better than reached 61.2%. Each antagonistic microbe may enhance that of singl the growth of e antagonist the seedlings respectively, and the best , and the combined control enhanced growth by 57%. The bio-control sustainable experiment showed that the controlling effect of complex antagonists was still greatest, but declined about 5.6% than half a year ago.

关 键 词：绿粘帚霉 坚强芽孢杆菌 生物防治 立枯病 马尾松 

分 类 号：Q939.96[生物学—微生物学]