| 调亏灌溉对河西绿洲灌区春小麦耗水特征的影响 |
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| 引用本文： | 张步翀.调亏灌溉对河西绿洲灌区春小麦耗水特征的影响[J].灌溉排水学报,2008,27(3). |
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| 作者姓名： | 张步翀 |
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| 作者单位： | 甘肃农业大学水利水电工程系,兰州,730070 |
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| 基金项目： | 甘肃省高等学校研究生导师科研计划
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甘肃农业大学校科研和校改项目 |
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| 摘 要： | 对河西绿洲灌区调亏灌溉春小麦0~120 cm土层的耗水特征、产量指标体系与阶段耗水量和不同生育时期土壤水分的相关关系进行了分析研究。结果表明,在调亏灌溉条件下,不同水分调亏处理、不同产量水平下春小麦阶段耗水量和日耗水强度差异较小;春小麦耗水模系数全生育期变化趋势也较为一致,在播种—分蘖期和分蘖—拔节期最小,而拔节—孕穗期和抽穗—灌浆期最大;春小麦孕穗、抽穗期仍可进一步施以适时适度的较为严格的土壤水分调亏而不会降低小麦生产力,而降低成熟期的土壤含水量不仅不会降低小麦生产力,反而会提高其水分利用效率和供水效率。
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| 关 键 词： | 耗水特征 调亏灌溉 河西绿洲 春小麦 |
Effects of Regulated Deficit Irrigation on Water Consumption in Spring Wheat Field in Hexi Oasis Irrigation Region |
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| ZHANG Bu-chong.Effects of Regulated Deficit Irrigation on Water Consumption in Spring Wheat Field in Hexi Oasis Irrigation Region[J].Journal of Irrigation and Drainage,2008,27(3). |
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| Authors: | ZHANG Bu-chong |
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| Institution: | ZHANG Bu-chong(Department of Water Resources Engineering,Gansu Agricultural University,Lanzhou 730070,China) |
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| Abstract: | The soil water consumption in 0 to 120 cm layer in the spring wheat field,the correlations between the yield related variables and phasic water consumption and soil water contents during different developmental stages under regulated deficit irrigation(RDI) in Hexi oasis irrigation region were analyzed.The results indicated that no significances were found in phasic and daily water consumption among different water deficit treatments and under various yield performance levels,furthermore,the phasic crop wat... |
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| Keywords: | water consumption characteristics regulated deficit irrigation Hexi oasis spring wheat |
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