The antibiotic 2507 has also satisfactory effect for controlling chinese cabbage downy mildew disease infected by Peronospora parasitica Fr.with efficacy 87.5%in field test.

• 结果表明，抗生素2507在温室人工接菌情况下，防治黄瓜疫病的效果可达95%25以上，田间小区防治小白菜霜霉病的效果达到87.；5%25。