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cje ›› 1989, Vol. ›› Issue (6): 31-33.

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Preliminary Study on Quantitative Dynamics of Aphis gossypii on Cotton Plants

Zhu Changliang1, Shen Zhongjian2   

  1. 1. Nanjing Medical College;
    2. Fudan University
  • Received:1987-12-23 Revised:1988-02-05 Online:1989-12-10

Abstract: Relations between A. gossypii and cotton plants have been studied. The population dynamics of cotton-aphids consists of four stages, i. e., rise, balance, collapse and oscillation in a new level. From their invasion to pre-collapse period, the population dynamics of aphids accords with a Logistic curve, which can be expressed by the equation: N=2276.8/(1+e7.94-0.40t).

Key words: Wetland restoration, Self-design versus design theory, Restoration technique