欢迎访问《生态学杂志》官方网站,今天是 分享到:

生态学杂志 ›› 1993, Vol. ›› Issue (1): 62-66.

• 研究报告 • 上一篇    下一篇

棉花苗蚜尖角突变模型及其分析

赵惠燕, 汪世泽, 岳妙云   

  1. 西北农业大学植保系, 陕西杨陵712100
  • 收稿日期:1991-01-05 修回日期:1991-04-01 出版日期:1993-02-10

Cusp Mutation Model of Cotton Seedling Aphids and Its Analysis

Zhao Huiyan, Wang Shize, YueMiaoyun   

  1. Department of Plant Protection, Northwestern Agricultural University, Yangling, ShaanxiProvince 712100
  • Received:1991-01-05 Revised:1991-04-01 Online:1993-02-10

关键词: 土壤团聚体, 土壤有机碳, 原生林, 喀斯特峰丛洼地

Abstract: Chinese Journal of Ecology,1993,12(1) :62-66。The dynamic system of cotton seedling aphids,its natural enemies and climate is studied. A definitemodel of cusp mutation is set up and mutation regions are determined. The control and state variables ofthe system vary with time,and the boundary values determined by control variables can be used as thedynamic controlling targets of cotton seedling aphids, The model provides scientific basis for determiningcontrolling time and targets of cotton seedling aphids.

Key words: soil aggregate, soil organic carbon, primary forest, Karst cluster-peak depression.