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Chinese Journal of Applied Ecology ›› 1993, Vol. 4 ›› Issue (1): 42-46.

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Regional distribution of rice grain quality in climatic transitional regions from north to south China

Zhang Songwu   

  1. Northwest Agricultural University, Yangling 712100
  • Received:1990-07-31 Revised:1992-07-03 Online:1993-01-25 Published:1993-01-25

Abstract: On the basis of agricultural climatic indices, the ecoclimatic factors affecting rice grain quality in regions investigated were comprehensively assessed by integrated fuzzy estimation method, and the regions were divided into areas by qualitative aggregation method. The variations of rice grain quality in all areas had the common regularity.

Key words: Rice grain quality, Agroclimatic index, Regional distribution, desert grassland., soil physical and chemical characteristics, soil fractal dimension, soil particle size distribution (PSD), desertification