为筛选对美洲南瓜枯萎病具有良好抑制作用的生防药剂及生防菌株，选择4种植物源生防农药和4种生防菌株对美洲南瓜枯萎病进行药剂筛选和室内防效测定。结果表明:生防木霉T6菌株发酵液以及0.3%丁子香酚对该病菌具有较强的抑制作用，稀释5倍的生防木霉T6菌株发酵液制成含药培养基培养7 d时，对病原菌的抑制率为85.7%；稀释250倍的0.3%丁子香酚可溶性液剂制成含药培养基培养7 d时，对病原菌的抑制率为82.6%。长枝木霉T6菌株发酵液室内防效测定结果显示有一定防效。

In order to screen out biocontrol agents and strains with good inhibitory effect on Cucurbita pepo Fusarium wilt， four plant-derived pesticides and four biocontrol strains were selected for drug screening and indoor control efficacy determination. The results showed that the fermentation broth of Trichoderma longibrachiatum T6 strain and 0.3% eugenol had a strong inhibitory effect on the pathogen of Cucurbita pepo Fusarium wilt. The inhibition rate of Trichoderma longibrachiatum T6 strain diluted by 5 times to pathogens was 85.7% and 0.3% eugenol to pathogens was 82.60% when it was diluted 250 times to medium containing medicine for 7 days. And the fermentation broth of Trichoderma longibrachiatum T6 strain showed certain control effect.

S642.6；S436.429

甘肃省大学生创新创业训练计划项目(S202010733091)；甘肃农业大学学生科研训练计划项目(202013032)；甘肃农业大学科技创新基金(GAU-XKJS-2018-156)。