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蜘蛛是水稻害虫的主要天敌种群，对水稻害虫尤其对稻飞虱的发生具有一定的抑制作用。研究稻田蜘蛛的发生规律，分析其对稻飞虱的控制效应，并加以合理保护和利用，是稻飞虱综合治理工作的重要内容［１，２］。１９９１～１９９６年，作者对盐城市的稻田蜘蛛种群的消长动态。控
Spiders are the major natural enemies of rice pests and have certain inhibitory effects on the occurrence of rice pests, especially planthoppers. Studying the law of occurrence of rice spiders and analyzing their control effects on planthoppers and their protection and utilization are important aspects of the comprehensive management of planthoppers [1,2]. Growth and Decline of Spider Populations in Paddy Field in Yancheng City from 1991 to 1996. control