【摘要】 1997年在兰考县调查了泡桐林内小绿叶蝉Empoascaflavescens(Fabricius)的分布、种群动态及昼夜活动节律。小绿叶蝉集中分布于林冠上部,其分布与林冠高度呈正相关,以黄色诱虫器为例,其相关性分别表现为y=1012.7x-2726.7(R2=0.9971)(黄筒)和y=66.127x1.8462(R2=0.9866)(黄板);种群数量在年生活周期中有3个明显的高峰,即6月上旬、7月下旬、9月上旬。昼夜活动节律在不同月份存在一定的差异,夏季气温高时成虫多在早晨(8∶00)和傍晚(18∶00～20∶00)温度相对较低时活动;秋季则集中在中午(14∶00)温度较高时活动,其它时间为取食和隐匿休息时间。更多还原

【Abstract】 Survey of distribution in paulownia woods,regularity of long term activity in one year and short term activity in one day of E.flavensces was carried out in Lankao County,Henan Province.Results showed that the distribution of E.flavescens was positively correlated to the height of paulownia canopy.The population of E.flavescens underwent 3 peak stages in a year,that is:the 1st ten days of June,the last ten days of July and the 1st ten days of September.Characters of activity during daytime and night time were different in seasons.The adults were active at 8∶00 and 18∶00～20∶00 in summer(July,August)and at 14∶00 in fall(Sept).更多还原