捕食性天敌是控制柑桔叶螨(Panonychus citri)发生为害的重要生物类群。为更好的保护利用此类天敌。1987～1989年,作者于宁德地区家科技所建立不使用化学农药的柑桔试验园,以常规使用化学农药的柑桔园为对照,观察捕食性天敌对柑桔叶螨发生数量的影响。结果简报如下。 试验园设计:试验园面积约1.7亩,品种为雪柑,3年生。园的四周为高约3米的黄竹 Predatory enemies are important biological groups controlling the occurrence of Panonychus citri. Use these natural enemies for better protection. From 1987 to 1989, the author set up a citrus experimental garden without using chemical pesticides in the science and technology institute of Ningde, and compared the effects of predatory natural enemies on the occurrence of citrus spider mites, using citrus orchard with chemical pesticides as control. The result briefing is as follows. Test Park Design: Test Area of ​​about 1.7 acres, the varieties of Xue Gan, 3-year-old. The park is surrounded by yellow bamboo about 3 meters high