摘要
黄杨粕片盾蚧１龄若虫在小叶黄杨１年生枝条上聚集与扩散交替发生，在当年生枝条上则持续扩散。其整个种群在较大时空范围内亦呈现持续扩散趋势。种群个体间有相互吸引作用，以个体群存在，在生境空间呈聚集分布；其在植株内不同部位中以阴面上部聚集程度最高，而在植株间则聚集程度较低。
The first instar nymphs of Parlagena buxi alternate aggregation and dispersion of the one-year old twigs of Buxus microphylla,and they disperse continuouslly on the twigs grown in the year.The whole population of P.buxi appears continued dispersion tendency in the large temporal and spatial range.In the population,the individuals attract each other,and their existence is coloies.The population appears aggregation pattern in the habitat space.The highest aggregation degree of it is on the upper part of north side in the different parts of the plant, and among the plants the aggregation degree is lower.
出处
《河北农业大学学报》
CAS
CSCD
北大核心
1996年第3期7-12,共6页
Journal of Hebei Agricultural University
基金
河北省教委课题
关键词
空间分布特性
种群
黄杨
粕片盾蚧
害虫
dispersion law
spatial distribution characteristic
population
Parlagena buxi(Takahashi)
