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由于茶毛虫、茶黑毒蛾等多种茶园害虫栖息部位隐蔽,低龄幼虫多在茶树中下部的成熟老叶背面取食、活动,常规的树面喷药方法不易接触到靶体害虫。特别是春夏两季,茶树叶面积系数大,阵雨多,不仅药液很难进入茶树中下层,而且易使胃毒剂等在未被充分吸收前就被雨水稀释、冲刷。因此,对于栖息部位隐蔽的害虫,特别是当其进入暴食期时,更应选用触杀剂之类农药,运用反斜并用的喷药方法。
As tea caterpillars, black tea moths and other tea plantations pests habitat hidden, young larvae in the lower part of the mature tea leaf in the back of the back feeding, activity, conventional tree spray method is not easy to reach the target body pests. Especially in spring and summer, tea leaf area coefficient, shower and more, not only difficult to enter the middle and lower tea plant liquid, but also easy to make stomach poison before being fully absorbed by the rain diluted, erosion. Therefore, for the habitat hidden pests, especially when it enters binge eating period, should be more like touch of pesticides and other pesticides, the use of anti-sync spray method.