| 节水灌溉条件下水稻需水规律及水分利用效率研究 |
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| 引用本文： | 刘广明,杨劲松,姜艳,张秀勇. 节水灌溉条件下水稻需水规律及水分利用效率研究[J]. 灌溉排水学报, 2005, 24(6): 49-53 |
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| 作者姓名： | 刘广明 杨劲松 姜艳 张秀勇 |
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| 作者单位： | 中国科学院,南京土壤研究所,江苏,南京,210008;江苏天华大鹏会计师事务所,江苏,南京,210024;河海大学,江苏,南京,210098 |
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| 基金项目： | 国家自然科学基金资助项目(40371058) |
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| 摘 要： | 根据田间试验对宁夏引黄灌区水稻需水规律及节水灌溉条件下水稻田水分利用效率开展研究。研究表明:拔节孕穗期和抽穗开花期是水稻生育过程中最关键需水期。控制灌溉较当地常规淹灌节水71%,灌溉水分利用效率为当地常规淹灌的4.2倍。控制灌溉不仅节水效果良好、水分利用效率较高,而且保证了良好产量的实现。水稻控制灌溉技术适用于宁夏引黄灌区。
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| 关 键 词： | 节水灌溉 需水规律 水分利用效率 引黄灌区 |
| 文章编号： | 1000-646X(2005)06-0049-04 |
| 修稿时间： | 2005-09-20 |
Study of Water-demand Regulations and Water Use Efficiencies of Rice under Condition of Different Water-saving Irrigation Systems |
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| LIU Guang-ming,YANG Jin-song,JIANG Yan,ZHANG Xiu-yong. Study of Water-demand Regulations and Water Use Efficiencies of Rice under Condition of Different Water-saving Irrigation Systems[J]. Journal of Irrigation and Drainage, 2005, 24(6): 49-53 |
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| Authors: | LIU Guang-ming YANG Jin-song JIANG Yan ZHANG Xiu-yong |
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| Affiliation: | LIU Guang-ming~1,YANG Jin-song~1,JIANG Yan~2,ZHANG Xiu-yong~3 |
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| Abstract: | Study of water-demand regulations and water use efficiencies under condition of different irrigation systems of rice were carried out by serial field-scale experiments.The results obtained showed that the third and fourth steps of rice life were the key periods of water-demand.Under Controlling Irrigation system,71% of the total amount of local flood irrigation water would be saved while irrigation water use efficiency was 4.2 times of that of local flood irrigation.It demonstrated that Controlling Irrigation of rice was one of the most productive irrigation systems with sound water-saving effect and high water use efficiency,and thus this irrigation system was suitable to be used in irrigation areas of semiarid zone,especially in those along the Yellow river. |
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| Keywords: | water-saving irrigation regulations of water-demand water use efficiency irrigation areas |
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