Deng Xiping,Shan Lun,Lnanaga Shinobu.High Efficient Use of Limited Irrigation Water by Semiarid Zone Spring Wheat[J].Research of Soil and Water Conservation,1998,5(01):65-69.
半干旱区春小麦高效利用有限灌水的研究
- Title:
- High Efficient Use of Limited Irrigation Water by Semiarid Zone Spring Wheat
- Keywords:
- spring wheat; limited irrigation water; water use efficiency; dryland
- 摘要:
- 在宁夏南部半干旱山区的研究结果表明，满足籽粒产量最大时所需的补充灌水量为200mm；满足作物水分利用效率最高时所采的补充水量为100mm；满足灌水效率最高时所需的补充灌水量为60mm。60mm补充灌水条件下可使春小麦的耗水量从240mm增加到320mm左右，同时明显地使作物产量、水分利用率和灌水效率得以同步提高，作物对土壤储水和利用程度也相应增强。据此认为，旱地春小麦有限灌水量的适宜下限为60mm。对不同生育期有限灌水的研究结果表明，拔节期是春小麦有限供水的最佳时期。
- Abstract:
- The research results showed that in the semiarid mountain area of the south part of Ningxia, the maximum supplementary irrigation water to meet with the highest grain yields of spring wheat was 200mm; and the supplementary irrigation water to satisfy the highest crop water use efficiency was 100mm; and the supplementary irrigation water required to satisfy the highest irrigation efficiency was 60mm. In the case of 60mm supplementary irrigation water, the water consumption of spring wheat increased from 240mm to 320mm or so. Meanwhile, crop water consumption, water use efficiency and irrigation efficiency were much imprpved synchronously. And also, stored soil water use efficiency by crops improved correspondingly, on the basis of which it can be considered that the limited irrigation water for dryland spring wheat was the lower limitation. Also, the results from research on the limited irrigation water in different and developing stages indicated that the best Period of limited water supply should be the jointing stage.
参考文献/References:
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[3] Shan Lun and Deng Xiping et al.Water use efficiency in agriculture, Vivian R.Priel press, Jerusalem, 1992 102~110
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备注/Memo
收稿日期:1997-10-10。