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７４％螟虱星 ＷＰ，是由上海农乐生物制品有限公司生产的防治螟虫和飞虱的复配农药。为探索其防治效果和对水稻安全性，特设本课题。１材料和方法１．１试验材料试验对象水稻螟虫、飞虱。试验作物“闵优 １２８”。试验药剂 ７４％螟虱星 ＷＰ（上海农乐生物制品有限公司）。?
74% pest repellent WP, a compound pesticide for the control of stem borers and planthoppers produced by Shanghai Nongle Biological Products Co., Ltd. In order to explore its control effect and the safety of rice, this project is ad hoc. 1 Materials and methods 1.1 Test materials Test subjects Rice stem borers, planthoppers. Test crop “Minyou 128”. Test agent 74% ticks Lice WP (Shanghai Nongle Biological Products Co., Ltd.). ?