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李树萌发新梢时,很容易受蚜虫为害,使新梢嫩叶卷曲,黄化脱落,造成大量落花落果,降低产量。防治方法是:在李树刚刚萌动时、幼叶刚刚展开时和新梢即将转绿时,各喷拖一次1000倍氧化乐果水溶液,或3000倍蚜虱净水溶液,或1500倍农地乐水溶液,或2500倍一遍净永溶液,以均匀喷湿所有枝叶,并开始有水珠下滴为宜。喷药后4
Li Shue germination of new shoots, it is susceptible to aphid damage, so that the tender tip of curly leaves, yellow off, resulting in a large number of flowers and deciduous fruit, reduce production. Prevention and control methods are: when the plum just sprouting, young leaves just started and the shoot is about to turn green, the spray drag 1000 times omethoate, or 3000 times the water solution of imidacloprid, or 1500 times of farmland water solution , Or 2500 times the net Yong solution, to evenly wet all foliage, and began to drip drop is appropriate. After spraying 4