为深入研究建德地区稻田生长季节昆虫群落结构,弄清其对水稻生产的影响,通过对2012年5—10月浙西北建德地区水稻田诱虫灯下昆虫群落进行了系统调查,并分别运用自然系统分类法、生态功能分类法、优势度及不同时间昆虫群落的多样性指数(H’)、均匀度(J)分析,对稻田灯下昆虫群落结构进行了分类研究。结果表明,建德地区水稻田灯下昆虫群落由13目69种组成,其中,鳞翅目最多,占26.09%,同翅目、鞘翅目次之,分别占17.39%、14.49%。稻田昆虫群落根据生态功能分为4个功能团,其中剔除对稻田影响较小的卫生昆虫外,植食性昆虫种类最多,在数量上占整个昆虫群落的绝大多数,危害最重,对水稻产量影响最大。群落中的优势种为按蚊、褐飞虱、白背飞虱,优势度分别为48.58%、15.01%、12.03%;褐飞虱、白背飞虱、稻纵卷叶螟属于R-类害虫,个体小,受环境气候因素的影响极大,适宜条件下数量多,对水稻造成的危害比较严重,对群落结构起决定性的作用。5月的昆虫群落多样性指数(H’)、均匀度(J)均最高,这表明5月的稻田昆虫群落结构最稳定、物种间平衡性也最好,随着月份的推移,稻田昆虫群落的多样性指数(H’)和均匀度(J)也在逐渐降低。这些结果为在群落水平上进行稻田虫害综合防治提供了一定的理论依据。 In order to further study the insect community structure during the growing season in paddy field in Jiande and clarify its impact on rice production, a systematic investigation was conducted on the insect community under the trap light of paddy field in Jiande Prefecture, northwestern Zhejiang, from May to October 2012, respectively The classification of insect community structure under rice field lamp was studied using natural taxonomy, ecological function classification, dominance and diversity index (H ’) and evenness (J) analysis of insect community at different time. The results showed that the insect community under the rice field lamp in Jiande area consisted of 13 orders and 69 species, of which Lepidoptera was the most, accounting for 26.09%, followed by Homoptera and Coleoptera, accounting for 17.39% and 14.49% respectively. According to the ecological function, the insect communities in paddy fields were divided into four functional groups. Except for the hygienic insects which had less effect on the paddy fields, the majority of herbivorous insects accounted for the vast majority of the entire insect community in quantity, which harmed the rice yield most influential. The dominant species in the community were Anopheles, Nilaparvata lugens (BPH) and whitebacked (Sogatella furcifera), with dominance of 48.58%, 15.01% and 12.03%, respectively. The brown planthopper, Sogatella furcifera and Cnaphalocrocis medinalis belonged to R- It is greatly affected by the environmental and climatic factors, with a large number of suitable conditions and more serious damage to rice, which plays a decisive role in community structure. The diversity index (H ’) and evenness (J) of insect community in May were the highest, which indicated that the insect community structure in May was the most stable and the balance among species was also the best. As the month progressed, the insect community The diversity index (H ’) and evenness (J) are also gradually decreasing. These results provide some theoretical basis for comprehensive prevention and control of rice field pests at the community level.