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48％乐斯本乳油是美国陶氏益农公司生产的一种高效广谱性有机磷杀虫剂，能有效防治蔬菜、果树、棉花、小麦、水稻、茶叶等作物的多种害虫。多年来，对乐斯本防治蔬菜害虫进行了较系统的田间药效试验，现将试验结果报告如下。1材料与方法1．互供试药剂①48％乐斯本乳油（美国陶
48% Rexam EC is a highly efficient and broad spectrum organophosphate pesticide produced by Dow AgroSciences. It can effectively control various pests of crops such as vegetables, fruit trees, cotton, wheat, rice and tea. Over the years, the prevention and control of vegetable rust pests carried out a more systematic field efficacy test, the test results are reported as follows. 1 Materials and methods 1. Inter-test agents ① 48% LES Ben EC (American Tao