摘要
蚱蝉成虫有群居性。卵枝和出土羽化若虫的分布符合鱼二项分布的聚集分布。若虫在杨树根区土壤中的分布表现为“聚表性”和“向心性”。
The adulu have the social property.The distribution of the egg -branehs and nrurnphs after emergence is suited to the aggregated disptrsion of negative binomial distribution.The distribution of the numphs in the soil about the poplar roots the properties of‘surface-aggregation’and‘centrip- etal-aggregation’。
出处
《陕西林业科技》
北大核心
1989年第4期74-78,共5页
Shaanxi Forest Science and Technology
