Field Water Condition and Its Effect on Crop Yield in the South of Loess Plateau

Li Kaiyuan

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Field Water Condition and Its Effect on Crop Yield in the South of Loess Plateau

- Field Water Condition and Its Effect on Crop Yield in the South of Loess Plateau
- Bulletin of Soiland Water Conservation Vol. 14, Issue 6, Pages: 6-10(1995)
- 作者机构：
  
  中国科学院水利部水土保持研究所
- 作者简介：
- 基金信息：
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- Published：1995
- 稿件说明：
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Li Kaiyuan. Field Water Condition and Its Effect on Crop Yield in the South of Loess Plateau[J]. Bulletin of Soiland Water Conservation, 1995, 14(6): 6-10.
DOI：

Li Kaiyuan. Field Water Condition and Its Effect on Crop Yield in the South of Loess Plateau[J]. Bulletin of Soiland Water Conservation, 1995, 14(6): 6-10. DOI：

摘要

黄土高原南部土层深厚疏松

质地中壤

土壤水分性质优良

作物具有良好的水分生态环境?对农田水分条件及其产量效应进行了定量评价

结果表明:东部旱塬农田水分亏缺率和减产率为30%左右

西部旱塬为10%左右?同时还对旱作水分产量潜势进行了估算

结果表明:在目前生产力条件下冬小麦旱作水分产量潜势为5330~6300kg/hm

￣2

春玉米为7700~9000kg/hm

￣2

?此外

水肥产量效应的研究指出

目前水分亏缺发生频率为50%左右

养分为100%;养分对提高作物产量具有普遍性

不论何种水文年型

增加农田养分投入均可显著提高作物产量?

Abstract

In the south of loess plateau

soil water properties are excellent and crops have a prop-er water environment.The field water condition and its effect on crop yield are appraised anddryland productivitv is estimated.The results show that

the rate of field water deficiency is 30%in the east and 10%in the west;in current condition of productive forces

the potential produc-tivities in dryland are 5330～6330kg/hm2 and 7700～9000kg/hm2 for wheat and corn respec-tively

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