摘要
2007年5月对月季茎蜂幼虫的空间分布型进行了调查研究,应用扩散系数(c)等6种指标分析,确定了该虫的空间分布型为聚集分布,分布的基本成分是单个个体;其聚集原因经Blackith种群聚集均数测定是由某些环境因素如气候、植株生长状况、品种抗虫性等原因所致;并提出了最佳理论抽样数。
The space distribution pattern of the Neosyrista similis was researched from April to May in 2005. By using 6 kinds of analyzing index, including the diffusion coefficient, we confirmed the space distribution pattern of the insect was aggregated distribution, the distributing fundamental component was individual. By using the population aggregation average mensuration of Blackith, the aggregation was caused by some environmental factor such as climate, the growth status of plants and the variety resistance to insects. This paper put forward the best theory sample result.
出处
《北方园艺》
CAS
北大核心
2007年第12期221-223,共3页
Northern Horticulture
关键词
月季茎蜂
空间分布型
聚集度指标
Neosyrista similis
Space distribution pattern
Calculation result of the aggregation degree
