Time dynamics of insect community in cotton field of Shanxi Province
山西省棉田昆虫群落的时间动态研究

Hierarchical cluster was employed to analyse the time dynamics of insect community in cotton field of Shanxi,based on the richness,diversity index,total individual number,PIE,evenness. The result show that its time pattern could be divided into four stages.Considering the development condition of cotton plant,the integrated pest management(IPM) strategies on every period were also explored.