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苹果叶螨和苹果黄蚜是为害苹果叶片、新梢的主要害虫,苹果落花后是防治这2种害虫的关键时期,目前在生产中多用不同药剂分别进行防治,防治成本较高,为了达到1次施药同时防治2种害虫的目的,我们于2003—2005年结合农业部安排的田间药效试验,用20%吡.哒乳油对苹果叶螨和苹果黄蚜进
Apple spider mite and apple aphid are the main pests which affect the apple leaves and shoots. After the apple is dropped off, they are the key period to control the two kinds of pests. At present, they use different medicaments for prevention and control separately in production. In order to reach 1 The second application of pesticides and the prevention and control of two kinds of pests purposes, we in 2003-2005 combined with the Ministry of Agriculture arranged field efficacy test, with 20% of pyridaben on apple spider mites and apple aphid into