盆栽苏铁很容易受蚧壳虫危害,严重时密密麻麻吸附在茎叶上,使叶片黄化,植株老化,形成小老树。防治方法如下: 经常检查苏铁的茎叶,特别要注意检查靠近茎叶基部,发现有少量的蚧壳虫吸附在茎叶上时,就要立即用人工将其刮去,并马上喷洒1000倍蚧死净水溶液,或1000倍速扑杀水 Potted cycads are susceptible to scale insects, severe dense dense adsorption on the stems and leaves, the leaves yellowing, plant aging, the formation of small trees. Prevention and treatment are as follows: Often check the cycads leaves, with particular attention to check near the base of stems and found that a small amount of scale insects adsorbed on the stems and leaves, it should be manually scrape it and immediately spray 1000 times Dead water solution, or 1000 times the speed to kill water