地理科学 ›› 1999, Vol. 19 ›› Issue (2): 181-185.doi: 10.13249/j.cnki.sgs.1999.02.181

• 研究报道 • 上一篇    下一篇

黄淮海平原冬小麦生长期旱情分析

赵昕奕, 刘继韩   

  1. 北京大学城市与环境学系 北京 100871
  • 收稿日期:1998-01-22 修回日期:1998-09-22 出版日期:1999-03-20 发布日期:1999-03-20
  • 基金资助:
    国家自然科学基金49671036

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

摘要: 黄淮海平原降水较少且年际、季际变化大,因此水分供应状况成为该区作物,特别是以冬春季为主要生育期的冬小麦的主限制因素。鉴于作物实际蒸散量与潜在蒸散量关系依赖于作物生长状况和土壤水分的事实,提出反映作物缺水状况的干旱指标---作物水分胁迫指数(CWSI).计算黄淮海平原冬小麦生长期间的CWSI,并分析其在自然降水条件及适量灌溉条件下的时空分异规律。

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.

中图分类号: 

  • S152.7