【摘要】 本研究通过对广东省韶关市柑桔园的糠片盾蚧 Parlotoria pergandii 年消长情况的调查和对该虫生活习性的观察,制定并试行如下的控制糠片盾蚧综合治理的措施:停止原来使用乙基1605等广谱性杀虫剂;柑园生草覆盖,改善柑园中天敌的生态环境条件,促进天敌对害虫的控制作用。试验结果表明,在7月份,当第一批上果爬虫发育至二龄若虫时,及时喷一次1000倍的40%速扑杀乳剂便能控制该虫的为害在经济损害水平以下。在综防试验区,糠片盾蚧的虫株率从1986年的100%下降至1988年的22%,受害指数也由1986年的0.589下降至1988年的0.203.更多还原

【Abstract】 An experiment of IPM was carried out in the citrus orchard of Shaoguangcity,mainly aecoding to the survey of the biology and population dynamics ofParlatoria pergandii.(1)Stopping to use the insecticide Ethyl-parathion,(2)By mulching the citrus orchard with grass to promote the growth of itsnatural enemies,(3)To use just one time the 40% Snpracide 1000X in July,when the 2ndlarvae happen on fruit.As result,the happened percentage of the Parlatoria pergandii per tree camedown from 100% in 1986 to 22% in 1988,and the injury index decreased from0.589 to 0.203.更多还原