1　试验目的近年来宣郎广丘陵茶区茶园大面积发生茶尺蠖 ,世代重叠 ,危害严重 ,化防次数和剂量逐年增加 ,这给茶叶中农药残留构成极大威胁。为探索植物源农药防治茶树害虫 ,于 2 0 0 0年开展了以验证 1 .2 %中垦牌苦参素对茶尺蠖田间防效。2　试验条件2 .1　试验对象　 1、2龄 A test purpose In recent years, Xuanlang Guang Hilly tea area tea plantations large area Occurrence, overlapping generation, endanger the severity of the number of anti-diversification and the dose increased year by year, which pose a great threat to the pesticide residues in tea. In order to explore the plant-based pesticides for the control of tea tree pests, in 2000 to carry out a verification to verify 1.2% of kushen licensing of tea on the field control effect. 2 test conditions 2.1 test subjects 1,2-year-old