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Chinese Journal of Applied Ecology ›› 2002, Vol. ›› Issue (1): 55-59.

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Population physiological indices on density-tolerance of maize in different plant type

XUE Jiquan1, LIANG Zongsou1, MA Guosheng1, LU Haidong1, REN Jianhong2   

  1. 1. Northwest Science & Technology University of Agriculture and Forestry, Yangling 712100;
    2. Yulin Agricultural and Forestry College of Shaanxi Province, Yulin 719000
  • Received:2000-08-14 Revised:2000-12-11 Online:2002-01-15

Abstract: Taken maize in two plant types of compact-type and flat-type as research object,the relationships between density-tolerance and light distribution in population,indices of productivity(LAI,NAR,and CGR),and population sink-source were studied synthetically by means of crop growth analysis method.The results showed that light distribution in population was the chief index to measure density-tolerance of different maize varieties.The kinetic rules of LAI,NAR,and CGRwere the basic feature reflecting density-tolerance.The correspondent relationship in population sink-source was a comprehensive index to appraise density-tolerance of different maize varieties.

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