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体外测定表明，木霉菌株Ｔ—１６９和Ｔ—２７９对病原菌Ｒｈｉｚｏｃｔｏｎｉａｓｏｃｌａｎｉ（立枯丝核菌）、Ｆｕｓａｒｉｕｍｏｘｙｓｐｏｒｕｍ（尖孢镰刀菌）、Ｐｙｔｈｉｕｍａｐｈａｍｉｄｅｒｍａｔｕｍ（腐霉）和Ａｌｔｅｒｎａｒｉａｔｅｎｕｉｓ（交链孢霉）在对峙培养中的拮抗系数分别为２、２～３和３。温室测定表明，用０．６％（Ｗ／Ｗ）Ｔ－１６９麸皮培养物（１０７ｃｆｕ／ｇ）处理土壤。在人工接种立枯丝核菌、尖孢镰刀菌、腐霉及交链孢霉２０ｄ后，落叶松苗木发病率分别比未用木霉处理的对照减少４９．６％、１７．４％、１８．３％和１１．７％；用Ｔ－１６９和Ｔ－２７９木霉孢子悬浮液（１０８ｃｆｕ／ｍｌ）处理落叶松种子，人工接种立枯丝核菌１９ｄ后，落叶松成苗率分别比未用木霉处理的对照增加１８．８％和１２．７％。
In vitro assays showed that Trichoderma strains T-169 and T-279 were resistant to the pathogenic bacteria Rhizoctonia solani, Fusarium oxysporum, Pythiuma phamidermatum and Alternaria alternans The antagonistic coefficients were 2,2 ~ 3 and 3, respectively. Greenhouse assays showed that the soil was treated with 0.6% (W / W) T-169 wheat bran culture (107 cfu / g). After artificial inoculation of Rhizoctonia solani, Fusarium oxysporum, Pythium sp. And Alternaria sp. For 20 days, the incidence of larch seedlings was reduced by 49.6%, 17.4% and 18.4% respectively compared with the control without Trichoderma treatment .3%, and 11.7% respectively. Larix seeds were treated with T-169 and T-279 Trichoderma sp. Suspension (108 cfu / ml) Controls treated with Trichoderma increased 18.8% and 12.7%.