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绿洲１号是湖北绿洲生物技术有限公司开发的一种以病毒为主体的无公害生物杀虫剂。为明确该药剂对抗性菜蛾的田间防效，进行了本试验，现将结果报告如下。1材料与方法①供试药剂绿洲１号可湿性粉剂（ＰｒＧｖ加Ｂｔ）湖北绿洲生物技术有限公司生产；２５％百虫绝乳油（毒死蜱加
Oasis No.1 is a virus-based pollution-free biological pesticide developed by Hubei Oasis Biotechnology Co., Ltd. In order to clarify the field efficacy of the medicament against Plutella xylostella, the experiment was conducted. The results are reported as follows. 1 Materials and methods ① test agent Oasis No. 1 wettable powder (PrGv plus Bt) Hubei Oasis Biotechnology Co., Ltd. production; 25% of the total insecticide chlorpyrifos (chlorpyrifos plus