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通过对不同稻型、水稻生育期及防治措施29个群落的田间系统调查,运用极点排序法和模糊聚类法进行群落分析。结果表明,对稻田害虫和天敌群落的影响,总体上防治措施>稻型>生育期,不同稻型和水稻生育期害虫和天敌自身的特点,对不同防治措施对群落作用的效果有重要影响;早稻分蘖期和中稻分蘖期节肢动物群落具备自我调节能力,中稻乳熟期群落稳定性极差,需要人为防治措施,晚稻田群落稳定性较高。试验结果对群落生态学的研究与指导生产具有重要的理论和实践意义。
Based on the field survey of 29 rice communities with different rice types, rice growth stages and their control measures, the community analysis was carried out by using pole sorting and fuzzy clustering. The results showed that the effects on pest and natural enemy communities in paddy fields were mainly related to their control effects> rice type> growth period, their own characteristics of pests and natural enemies in different rice types and rice growth stages, which had an important impact on the effects of different control measures on community function. The arthropod community has the ability of self-regulation at early tillering stage and mid-season tillering stage. The stability of middle-aged rice at milking stage is very poor, which needs human control measures. The stability of late-season paddy field community is high. The test results have important theoretical and practical significance for the study of community ecology and guidance of production.