SCIENTIA GEOGRAPHICA SINICA ›› 1999, Vol. 19 ›› Issue (2): 181-185.doi: 10.13249/j.cnki.sgs.1999.02.181

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ANALYSIS OF DROUGHT DURING THE PERIOD OF WINTER WHEAT GROWTH IN HUANG-HUAI-HAI PLAIN

Zhao Xinyi, Liu Jihan   

  1. Dept. of Urban & Environmental Sciences, Peking University, Beijing 100871
  • Received:1998-01-22 Revised:1998-09-22 Online:1999-03-20 Published:1999-03-20

Abstract: Based on the fact that the ratio of actual evapotranspiration to potential evapotranspiration depends on the availability of soil moiture and crop growth stages, Crop Water Stress Index (CWSI) is submitted to express the crop drought. The CWSI by ten days interval during 11(1980-1991) winter wheat growth years of 60 stations in Huang-Huai-Hai Plain were calculated in this paper. Then we analyzed the characteristics of CWSI in time and space scale. And the CWSI on the conditions of rain-feed and that of irrigation are compared.

CLC Number: 

  • S152.7