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应用生态学报 ›› 2003, Vol. ›› Issue (5): 808-812.

• 研究论文 • 上一篇    下一篇

农业高效用水理论研究综述

杜尧东1, 宋丽莉2, 刘作新3   

  1. 1. 广州热带海洋气象研究所, 广州 510080;
    2. 广东省气候与农业气象中心, 广州 510080;
    3. 中国科学院沈阳应用生态研究所, 沈阳 110016
  • 收稿日期:2002-05-07 修回日期:2002-11-12
  • 通讯作者: 杜尧东,男,1964年生,副研究员,博士,主要从事节水农业、农业生态及资源保护研究,发表论文30多篇.E-mail:yddu@grmc.gov.cn.
  • 基金资助:
    国家“九五”重点科技攻关项目(960040406);广东省“九五”科技攻关资助项目(2002C20707)

An overview on theoretic research of high efficient water use in agriculture

DU Yaodong1, SONG Lili2, LIU Zuoxin3   

  1. 1. Guangzhou Institute of Tropical and Oceanic Meteorology, Guangzhou 510080, China;
    2. Climatic and Agrometeorogical Center of Guangdong Province, Guangzhou 510080, China;
    3. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China
  • Received:2002-05-07 Revised:2002-11-12

摘要: 农业高效用水包括节水灌溉和旱作农业,其核心是提高自然降水和灌溉水的利用效率和效益.农田蒸散的测定方法各有利弊.FAO先后建议用Penman修正式和Penman-Monteith公式计算参考作物蒸散量.Jensen乘法模型和Blank加法模型在作物水分生产函数研究中得到广泛应用.土壤适宜含水量和土壤干旱下限指标的最新研究成果,为低定额的农业供水提供了土壤物理学的重要依据.水分亏缺对与产量形成相关的各个生理过程影响的先后顺序为细胞扩张>气孔运动>蒸腾运动>光合作用>物质运输.不很严重的干旱反而对物质运输有促进作用.农田灌溉研究已由传统的充分灌溉,转向非充分灌溉、调亏灌溉和控制性分根交替灌溉.未来农业高效用水理论将在界面、土壤水动力学、生物节水、缺水逆境等方面深入开展研究.

关键词: 农业高效用水, 节水农业

Abstract: High efficient water use in agriculture includes water-saving irrigation and dryland farming, its core being to increase use efficiency and benefit of natural precipitation and irrigation. Each of measurement methods of field evapotranspiration has its advantages and disadvantages. Modified Penman and Penman-Monteith formulae were recommended to calculate the reference crop evapotranspiration by FAO one after another. Jensen and Blank models had a wide use in crop water production function. Recent achievements of appropriate soil moisture and lower limit of soil drought indices provided an important basis of soil physics for agricultural water supply of low quota.The influencing sequence of water stress on different physiological processes correlated with yield formation was in order of cell stretch>stoma movement>transpiration>photosynthesis>matter transfer. Non-severe drought could facilitate matter transfer. Field irrigation research has turn to deficit irrigation, regulated deficit irrigation and controlled alternative irrigation from traditional full irrigation. In the future, such researches as interfaces, soil water dynamics, biological water-saving and water stress would be deeply conducted in high efficient water use theory in agriculture.

Key words: High efficient water use in agriculture, Water-saving agriculture

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