中国稻田蜘蛛优势种及其成因探讨

文中介绍了中国稻田蜘蛛26个优势种在全国117个样点中的发生现状；论述了稻田蜘蛛优势种在中国稻区的地理分布概况；分析了稻田生态系统主要生态因子对稻田优势种蜘蛛发生发展的影响；重点探讨了稻田蜘蛛优势种的成因，提出了稻田蜘蛛优势种形成的主要条件和关键因子，为有的放矢地保护利用蜘蛛优势种群控制稻早效能提供了科学依据。

STUDIES ON THE DOMINANT SPECIES AND THE CONTRIBUTING FACTORS OF PADDY FIELD SPIDERS IN CHINA

Combining the investigating and literature the research introduced the 26 dominant species and populations of spiders in the 117 specimens in China paddy field, and discussed the distribution of which in China paddy field. The effect of the main ecological factors to the occurrence and development of the dominant species were analyzed, and the result showed that temperature as a non-biological factor functioned dominantly and paddy and paddy insects were the most important biological factors. In addition, artificial factors, as spreading manure, managing water, controlling insects, and so on, not only influenced paddy spiders directly, but also operated by influencing other factors as a controlling factor. In a word, it is the only way to study how the dominant species contribute that investigating the connection between the biological characteristics of the dominant species and the ecological factors.