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生态学杂志 ›› 1992, Vol. ›› Issue (3): 22-27.

• 研究报告 • 上一篇    下一篇

对害虫具自然控制能力的益害比指标模型研究

夏楚贵   

  1. 湖北农学院植保系, 荆州 434100
  • 收稿日期:1990-03-14 修回日期:1990-04-14 出版日期:1992-06-10

Study on Model of Natural Enemy/Pest Index Indicating Natural Contorl Capacity to Pest

Xia Chugui   

  1. Department of Plant Protection, Hubei Agricultural College, Jingzhou 434100
  • Received:1990-03-14 Revised:1990-04-14 Online:1992-06-10

关键词: 羊草草甸, 物种多样性, 空间格局, 植物群落斑块, 松嫩平原

Abstract: Study on hindered increment of pest population by natural enemy is performed to analyze the natural enemy/pest index indicating natural control capacity to pest. Based on the assumption of pest population having a Logistic increment, a natural enemy-pest ratio index model is established. Taking the control of cotton aphid by its natural enemy as an example, this paper discussed the application of this model in pest prevention and cure. A quantitative model of artificial supplement of natural enemy is deduced, and incorrect principles about the determinations of reasonable natural enemy-pest ratio index and supplement amount of natural enemy are clarified.

Key words: Leymus chinensis meadow,  , plant species diversity,  , spatial pattern, plant community patch, Songnen Plain