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生态学杂志 ›› 1991, Vol. ›› Issue (3): 10-14.

• 研究报告 • 上一篇    下一篇

稻田三种捕食性天敌与两种害虫共存系统捕食量的研究

吴进才   

  1. 江苏农学院植保系, 扬州 225001
  • 收稿日期:1990-01-08 出版日期:1991-06-10

Predatory Capacity in Coexistent System of Three Predatory Natural Enemies and Two Insect Pests in Paddy Field

Wu Jincai   

  1. Department of Plant Protection, Jiangsu Agricultural College, Yangzhou 225001
  • Received:1990-01-08 Online:1991-06-10

关键词: 多目标区位配置模型, 空间选址, 城市公园, 沈阳

Abstract: The method of rotational composite design of quadratic regression is used to establish mathematical models of predatory capacity in the coexistent system of three predatory natural enemies and two insect pests in paddy field. Under the system, predators prey mainly on white-backed rice planthopper.When coexist with 4th instar larva of white-backed rice planthopper and 3rd instar larva of rice leafroller, they also prey to a certain amount on the latter, the predation sequence is Paederus fuscipes>Pirata subpiruticus>Oedothorax insecticeps. Increase of the density of planthopper significantly reduces the predation on larva of rice leafroller, but increase of the density of the latter has little influence on the amount of planthopper being preyed.

Key words: multi-objective location-allocation (LA) model, spatial location selection, urban park, Shenyang