摘要
为了能准确预测梨小食心虫种群数量、变动规律,对梨小食心虫幼虫在桃梢的空间分布型进行了研究。结果表明,应用经典的理论频次测定法和应用扩散系数等8种指标分析,确定了该虫的空间分布型为聚集分布,其聚集原因Blackith种群聚集均数测定,说明梨小食心虫幼虫在桃梢上的聚集分部主要是由聚集习性所致,同时也受环境条件的影响。
The spatial distribution pattern of Grapholitha molesta larvae was investigated in peach crown,theoretical frequency distribution pattern and 8 indexes such as the diffusion coefficient（C） were analyzed.The result showed that the spatial distribution pattern fitted a contagious distribution and belonged to the aggregated distribution.The aggregation was caused not only by the congregation habit of Grapholitha molesta larvae,but also by the environmental factors,as tested by Blachkith average population accumulation.
出处
《山西农业大学学报（自然科学版）》
CAS
2010年第5期409-412,共4页
Journal of Shanxi Agricultural University(Natural Science Edition)
基金
国家公益性行业科研专项(No:200803006)
关键词
梨小食心虫
桃树
幼虫
空间分布型
Grapholitha molesta
Peach
Larvae
Spatial distribution pattern
