小麦田间节肢动物群落结构研究

Study on Community Structure of Arthropod in Wheat Field

[目的]阐明群落中优势种群的变动规律。[方法]采用系统分析方法研究小麦田节肢动物的物种构成、物种性质、群落丰富度、均匀度、多样性、集中度及其时间动态。[结果]合肥地区小麦田中后期节肢动物数量共10 027头,33种,分属15目25科;昆虫纲18科、蛛形纲7科。其中天敌13科,害虫8科,中性昆虫4科共28种。小麦田非天敌亚群落主要优势种蚜科和蓟马科丰盛度分别为0.623 50、0.111 49;天敌亚群落主要优势种群分别为异色瓢虫和八点球腹蛛,其丰盛度分别为0.250482、0.191 715。小麦田节肢动物群落4项指标随时间的变化均呈一定的规律性,其中群落丰富度和多样性指数规律性最强。[结论]为麦田害虫综合治理提供了理论依据。

[ Objective ] The aim was to elucidate change law of dominant species in community. [ Method ] Systematic analysis method was adopted to study species composition, properties, community richness, evenness, diversity, concentration and temporal dynamics of arthropod in wheat field. [ Result]The results showed that there are 33 species arthropod animals at middle and late stage in Hefei region wheat filed. The total number is 10 027, belonging to 15 orders, 25 family; insecta includes 18 family, arachnida is 7. Among which, natural enemies include 13 family, pests family is 8, neutral insects family is 4, including 28 species. The major dominant species of non-asian community are Lipaphis erysimi and Thrip, richness are 0.623 50,0.111 49 respectively ; the main dominant of natural enemies sub-community stocks are Leis axyridis and Theridion octomaguLatum, richness are 0.250 482 and 0. 191 715 respectively. Four indexes of arthropod communities displayed regulation . The law of richness index and diversity index were more significant. [ Conclusion ] The study will provide theoretical basis for integrated control of wheat pests.