山西品粉蚧种群消长规律与环境因子关系研究

山西品粉蚧（Peliococcus shanxiensisWu）,是一种严重危害小叶女贞（Ligustrum quihouicarr）和金叶女贞（Ligustrum vi-caryi）的新害虫,在陕西省1年发生2代,种群消长规律与温度和降雨有密切的关系,尤其冬春季温湿度是影响越冬代雌虫出蛰早晚和第1代发生危害程度的重要因素,冬春季温暖干旱越冬雌虫活动则早。每年发生危害高峰期一般出现在6月上旬～8月上旬,冬春低温多雨雪越冬代危害高峰出现在7月上旬以后。不同栽植方式对山西品粉蚧种群密度的影响：以小叶女贞、金叶女贞和小乔木作为绿篱进行栽植比以小乔木、灌木、草坪混合栽植地段山西品粉蚧虫口密度高,危害严重。

Research on the relationship between environment factors and Peliococcus shanxiensis Wu population dynamics

Peliococcus shanxiensis Wu is a new vermin which serious harms Ligustrum quihouicarr and Ligustrum vicaryi with 2 generations each year in Shannxi province. Population dynamics is closely related to rainfall and temperature. Temperature and humidity are the important factors impacting the overwintering female rivival sooner or later and the first generation occurrence degree. The overwintering female active early in Warm-arid winter-spring, and each year occurrence peak appears from June early to August early. The occurrence peak appears in the July early in winter-spring which had low temperature and more rain and snow. Planting methods influence Peliococcus shanxiensis Wu population density. Ligustrum quihouicarr, Ligustrum vicaryi and small arbor as a hedge has higher population density, and suffer serious harm than small arbor, bush and lawn.