白杨瘿螨发生规律与防治方法的初步研究

A Primary Study on the Occurrence Pattern and Control Method of Eriophyes Poulynquis Keifer

本文报道了以中国北方主要绿化树种──毛白杨雄株为主的重要害螨──白杨瘿螨（ＥｒｉｏｐｈｙｅｓｐｏｐｕｌｉｎｑｕｉｓＫｅｉｆｅｒ）的发生规律及其防治方法．该螨在山东省泰安地区ｌａ发生９代左右，以成螨在花芽内越冬，来年２月底开始产卵，卵期约１１ｄ，３月中旬至５月中、下旬是１～４代为害盛期，世代重叠。至５月中、下旬后少数瘿螨继续繁殖约５代，于１０月下旬后以成螨滞育越冬．该螨空间格局属聚集分布，取样时应适当扩大样点数。又经４月上旬在树干基部周围每隔５ｃｍ斜钻孔注久效磷或氧化乐果药效试验，防效分别为１００％和８０％。建议用久效磷或加大氧化乐果用药量来根除该螨的为害．

Eriophyes Poulynquis Keifer is the main pest injuring hairy white popular in the northpart of China. They had 9 penerations a year in Taian, Shandong province and overwinter inflower buds in the form of adult.They began to active and oviposit in the end or nextFebruary.The egg stage was about lldays. The serious damage stage occurred on 1-4generations from the middle ten days of March to the last twenty days of May. Generationsoverlapped each other in this Period. They developed and hred in these buds about 5generatjons. Adults went into diapause and' began to overwinter in the last ten days of October,with the aggregating distribution. Injecting monocrotophos and omethoate into holes boredaround the trunks with an interval of 5cm had obtained the controlling efficiencies of 100%and 80%, respectively.