设施蔬菜昆虫群落结构与时序动态

The structure and time dynamics of insect community in the protected vegetable

通过分析设施蔬菜生态系统中昆虫各群落的组成、特征及时序动态变化,为设施蔬菜害虫生态调控策略的制定提供科学依据。采用5点取样法,调查黄板诱集昆虫的种类和数量,利用群落特征指数进行分析。结果表明,设施番茄昆虫隶属于7个目16个科,设施黄瓜昆虫隶属于7个目18个科,并且设施黄瓜昆虫各群落丰富度指数、多样性指数与均匀度指数均高于设施番茄,而优势集中性指数、优势度指数则设施番茄高于设施黄瓜。非天敌昆虫亚群落在昆虫总群落的变化中起着主要作用,天敌昆虫亚群落对于非天敌昆虫群落的变化存在跟随现象。设施蔬菜生态系统昆虫群落特征与农田生态系统相比,具有一定相似性,又具有一定特殊性。

To provide a scientific basis for the ecological regulation of pest in protected vegetable,the composition,characteristics and temporal dynamics of insect communities in the ecosystem of the protected vegetables were analyzed.The five points sampling method was used to investigate species and quantity of insects trapped on yellow template.The basic characteristics of the insect community were analyzed using basic features of the community characteristic index.The results indicated that the insects collected in greenhouse tomato belonged to 16 families,seven orders,and the insects collected in greenhouse cucumber belonged to 18 families,seven orders.In addition,the richness index,diversity index and the evenness index of insect communities in greenhouse cucumber were higher than those in greenhouse of tomato.Nevertheless,the insect communities of protected tomato had higher dominant concentration index and the dominance index.The pests-neutral sub-communities played a major role in the changes of the total community of insects,and the natural enemy sub-communities had obviously follow-up to pests-neutral sub-communities.Compared with those under the farmland ecosystem,the characteristics of insect communities under the protected vegetable ecosystem have certain similarities and particularities.