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来源：雅诚德英语网
PGPR microbial agent also has obvious biocontrol effect and decreased the infection ratio of stem rot caused by S. sclerotiorum.
油菜PGPR菌剂具有明显的生防效果，能降低油菜菌核病的发病率；
PGPR microbial agent also has obvious biocontrol effect and decreased the infection ratio of stem rot caused by S. sclerotiorum.
油菜PGPR菌剂具有明显的生防效果，能降低油菜菌核病的发病率；