目的研究木霉菌剂对人参根部病害的田间防治效果,以进一步推广使用。方法调查两种木霉菌剂的3种使用方法及不同使用浓度对人参生长及发病的影响,评价木霉菌剂推广使用的可能性,筛选木霉菌剂的合理使用方法。结果两种木霉菌剂不仅将人参种苗成活率和人参种子出苗率分别提高30%和16%以上,而且能有效控制人参根部病害的发生。结论两种木霉菌剂适宜大面积推广使用。蘸根法使用时,用Tv04-2制剂稀释5000倍,Th3080制剂稀释10000倍。浸种法使用木霉菌剂时,可用Tv04-2制剂和Th3080制剂均稀释5000倍。

Objective To study the control effect of Trichoderma fungicides in the field and then popularize the using. Methods To investigate the influence by three using methods and different concentrations of the two Trichoderma strains on ginseng growth and its diseases, estimate the possibility of popular using the fungicide, and make a choice of the right using method. Results The two fungicides not only could raise the survival rate by 30% and the growing rate by more than 16%, but also effectively control the disease of ginseng. Conclusion The two Trichoderma fungicides have the potential to be used in a large range. The using method is diluting Tv04-2 to 5 000 times and Th3080 to 10 000 times when dipping the root of ginseng, and diluting Tv04-2 or Th3080 to 5 000 times when dipping the seeds of ginseng.

国家科技部攻关计划项目(2001BA701A58)