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Highly efficient use of limited water in wheat production of semiarid area

Progress in Natural Science:Materials International 2003年第12期 1-8页

作者： DENG Xiping 1*, SHAN Lun 2, INANAGA Shinobu 3 and Mohanmed Elfatih K.ALI 4(1. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences, Shaanxi 712100, China 2. Northwest Sci Tech University of Agriculture and Forestry, Shaanxi 712100, China 3. Arid Land Research Center, Tottori University, Hamasaka 1390, Tottori 680, Japan 4. El Obeid Research Station, Agricultural Research Corporation, P.O. Box 429, El Obeid, Sudan) State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Institute of Soil and Water Conservation Chinese Academy of Sciences Shaanxi 712100 China Northwest Sci-Tech University of Agriculture and Forestry Shaanxi 712100 China Arid Land Research Center Tottori University Hamasaka 1390 Tottori 680 Japan El-Obeid Research Station Agricultural Research Corporation P.O. Box 429 El-Obeid Sudan

To obtain a greater yield per unit rainfall is one of the most important challenges in dryland wheat production. Highly efficient use of limited water may be one means of achieving this goal. This paper reviewed wheat physiological adaptation and benefits associated with water deficit and variable conditions. In addition, it reveals the compensatory effect of limited irrigation and fertilizer supplement on wheat water use efficiency (wue) and highlights the breeding of new varieties for high wue that could improve wheat productivity under water limited environments in the semiarid area. Considerable potential for further improvement.in wheat productivity in semiarid area seems to depend on effective conservation of moisture and efficient use of this limited water. Different crops, soil and water management strategies should be adjusted according to the conditions that prevail in the various semiarid areas. By combining soil and water conservation approaches with regulating the cropping system by cultivating drought tolerant and water saving cultivars, the increase in wheat productivity could be achieved.

关键词： semiarid area dryland wheat physiological adaptation wue improvement.

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