摘要
采用5种聚集强度指标和2种线性回归对西花蓟马在石榴上的空间分布型进行了检验,对各指标的分析结果表明:西花蓟马在石榴园中的分布为聚集分布,个体间相互吸引,分布的基本成分是个体群,其聚集性随种群密度的增加而增强。用Iwao回归法中的α、β参数计算出了在允许误差范围内的理论抽样数。
Five kinds of gathering intensity index and two kinds of linear regression were used to test the spatial distribution pattern of Frankliniella occidentalis on pomegranate. Based on data analysis of the aggregation indi- ces, it showed that the distribution pattern of F. occidentalis in pomegranate gardens was aggregated. Individuals attracted each other, and basic composition of the distribution was a group of individuals. The aggregation was en- hanced with the increase of its population density. In addition, the theoretical sampling number in the allowed range could be obtained by using the Iwao＇s regression with a andβparameters.
出处
《植物保护》
CAS
CSCD
北大核心
2012年第4期131-132,140,共3页
Plant Protection
基金
国家现代农业产业技术体系四川攀西特色水果创新团队项目
关键词
石榴
西花蓟马
空间分布型
理论抽样数
pomegranate
Frankliniella occidentalis
spatial distribution
theoretical sampling
