近几年来 ,不少种植于红壤山地的成龄青、花出现桃蚜虫、桑白蚧、桃蛀螟和李小食心虫等害虫恶性循环发生现象。虽然用药量逐年加大 ,但防治效果并不明显 ,致使成本增加 ,经济效益较差。 1998年以来 ,笔者调查了部分虫害严重的园 ,探究其虫害严重的原因 ,并提出综合防治措 In recent years, many cultivated in the red soil mountain barley, scape appear peach aphids, mulberry white scales, peach borer and Li Xiaobing worms and other pests and vicious cycle phenomenon. Although the dosage increased year by year, but the control effect is not obvious, resulting in increased costs, poor economic efficiency. Since 1998, the author has investigated some of the pests severely damaged Park, to explore the causes of serious pests and put forward a comprehensive prevention and control measures