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应用生态学报 ›› 1998, Vol. 9 ›› Issue (6): 603-607.

• 研究论文 • 上一篇    下一篇

辽西半干旱地区农田水分循环特征的研究 Ⅰ. 农田供水状况研究

王仕新, 崔剑波, 庄季屏   

  1. 中国科学院沈阳应用生态研究所, 沈阳110015
  • 收稿日期:1997-11-17 修回日期:1998-09-14 出版日期:1998-11-25 发布日期:1998-11-25
  • 基金资助:

    国家“八五”科技攻关项目(85-007-01-02)

Characteristics of field water cycling in semiarid area of western Liaoning Ⅰ. Status of field water supply

Wang Shixin, Cui Jianbo, Zhuang Jiping   

  1. Institute of Applied Ecology, Academia Sinica, Shenyang 110015
  • Received:1997-11-17 Revised:1998-09-14 Online:1998-11-25 Published:1998-11-25

摘要: 探讨辽西半干旱地区的农田供水状况。分析表明该区大田作物的耗水来源主要为生长期内大气降水和土壤储水,由于大气降水不足,特别是生长前期的严重缺水是该地区作物减产的一个重要原因,而且还经常出现伏旱和“秋吊”, 大气降水占作物耗水量的75.6%以上,而土壤供水量最高达作物耗水量的24.4%, 作物耗水量与生长期内大气降水呈直线关系。

关键词: 半干旱区, 农田供水, 作物耗水量

Abstract: Studies on the status of field water supply in semiarid area of western Liaoning Province showed that the water consumption by crops mainly came from rainfall in growing season and soil water storage.An insufficient rainfall, and especially, a serious water shortage in early growing season was the important cause for the decrease of crop yield.Water supply from rainfall accounted for 75.6% of water comsumption, and that from soil water storage was up to 24.4%.There was a linear relationship between water consumption by crops and rainfall in growing season.

Key words: Semiarid area, Field water supply, Water consumption by crops