| Studies on optimum low limits of soil moisture index for deficit irrigation of crops |
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| DOI：10.7606/j.issn.1000-7601.2007.03.47 |
| Key Words: low limits of soil moisture deficit irrigation water use efficiency irrigation index deficit irrigation |
| Author Name | Affiliation | | LI Bai-feng | Institute of Soil and Water Conservation Chinese Academy of Sciences,Yangling,Shaanxi 712100,China
National Engineering Research Center for Water Saving Irrigation at Yangling,Yangling,Shaanxi 712100,China | | FENG Hao | Institute of Soil and Water Conservation Chinese Academy of Sciences,Yangling,Shaanxi 712100,China；Northwest A＆F University,Yangling,Shaanxi 712100,China；National Engineering Research Center for Water Saving Irrigation at Yangling,Yangling,Shaanxi 712100,China | | WU Pu-te | Institute of Soil and Water Conservation Chinese Academy of Sciences,Yangling,Shaanxi 712100,China；Northwest A＆F University,Yangling,Shaanxi 712100,China；National Engineering Research Center for Water Saving Irrigation at Yangling,Yangling,Shaanxi 712100,China |
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| Abstract: |
| The paper mainly discusses three aspects of the low limits of soil moisture in the research of deficit irrigation.First is what is the low limits of soil moisture,how it comes and why it is important.Secondly,the mainly factors that affect the low limits of soil moisture,such as the kinds of the crops,the growth period of the crops and the soil texture and soil bulk density.Thirdly,the effect of the low limits of soil moisture to the yield of the crops and to the WUE.Some main problems were also discussed as follows,old research about the low limits of soil moisture mostly focused on the food crops and some economic crops,actually the melon and fruit and vegetable crops should be pay more attention.And compensatory effect of plant has not been considered in the research of the low limits of soil moisture. |
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