稻田捕食性节肢动物群落的种库与群落的重建

本文对稻田捕食性节肢动物群落的种库和群落的重建进行了初步的研究。害虫防治史、植被覆盖度、环境复杂性和气候因子等对种库都有不同程度的影响。种库的结构决定了群落的重建。重建群落的优势种、物种丰富度和群落多样性与种库呈正相关关系。生产上可采取适当的措施保护天敌群落的种库，促进天敌群落的迅速重建，充分发挥天敌对害虫的控制作用

SPECIES POOLS OF PREDATORY ARTHROPOD COMMUNITIES AND COMMUNITY REBUILDING IN PADDY FIELDS

The species pools of predatory arthropod communities in rice fields were influenced by the history of pest control, the coverage of vegetation, the diversity of environment, and climatic factors. The structures of species pools determined the kind of species available for colonization of a habitat and influenced the timing of colonization and abundance of colonists. The dominant spices, species richness and community diversity in a rebuilding predatory arthropod community were positively related to those of species pool. Some measures should be taken to conserve native natural enemies for promoting the predatory arthropod community rebuilding and bringing the role of natural enemies in IPM into full play in rice fields.