| 引用本文: | 廖斌,李德荣,熊昱,等.典型稻田灌溉水分生产力和田间水利用系数分析[J].灌溉排水学报,0,():-. |
| Liao Bin,Li Derong,Xiong Yu,et al.典型稻田灌溉水分生产力和田间水利用系数分析[J].灌溉排水学报,0,():-. |
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| 典型稻田灌溉水分生产力和田间水利用系数分析 |
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廖斌1, 李德荣1, 熊昱2, 杨雪3,3, 吕国安1
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1.华中农业大学资源与环境学院;2.长江水资源保护科学研究所;3.湖北省水利水电规划勘测设计院
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| 摘要: |
| 【目的】通过灌溉水分生产力(IWP)和田间水利用系数(AE)共同分析典型稻田的灌溉用水效率。【方法】选取塝田(F1)和垄田(F2)两种典型稻田,进行为期两年的田间试验,设置了两种灌溉方式(AWD:干湿交替灌溉,CF: 淹灌)和三种氮肥梯度(N0, N90, N180：0, 90, 180 kg N/ha),同时也比较了不同降雨年份(平水年：2015,丰水年：2016)的灌溉用水效率。【结果】F1水稻产量整体上低于F2,在平水年F1水稻产量与F2无差异,而在丰水年比F2低27.1%,水稻产量不受灌溉方式影响,但随氮肥梯度的增加,F1和F2间水稻产量差异呈减小趋势；F2中AWD灌溉消耗的灌溉水量最少,IWP最高,分别为0.22 m3/m2和3.97 kg/m3,而F1 中CF灌溉的灌溉水量最多,IWP最低,丰水年和平水年F1的IWP比F2分别高85.1%和29.9%；AE受田块类型,灌溉方式,年份以及水稻生育期的影响,其中F1和F2的AE分别为0.9311和0.9347,AWD和CF灌溉分别为0.9363 和0.9296,平水年和丰水年分别为0.9307和0.9350,晒田之后幼穗分化期的AE最低,为0.9118。【结论】垄田(F2)的灌溉用水效率整体上高于塝田(F1),使用干湿交替灌溉(AWD)均能提高塝田和垄田的灌溉用水效率(IWP和AE)。 |
| 关键词: 水稻;塝田;垄田;田间水利用系数;灌溉水分生产率 |
| DOI： |
| 分类号:S3 |
| 基金项目:国家自然科学基金青年科学基金项目(41601220)；湖北省水利重点科研项目(HBSLKY201601)。 |
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| Analyzing Irrigation Water Productivity and Application Efficiency of Typical Paddy |
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Liao Bin1, Li Derong1, Xiong Yu2, Yang Xue3, Lv Guoan1
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1.College of Resources Environment of Huazhong Agriculture University;2.Yangtze River Water Resources Protection Research Institute;3.Hubei Province Water Resources and Hydropower Planning Survey and Design Institute
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| Abstract: |
| 【Objective】Analyzing the irrigation water efficiency of typical paddies by irrigation water productivity (IWP) and application efficiency (AE).【Method】A two-years filed experiment with two irrigation methods (AWD: alternate wetting and drying irrigation, CF: flooding irrigation) and three nitrogen levels was conducted in a hilled-paddy and ridge-paddy, and also compared the irrigation water efficiency in different rainfall years (normal flow year: 2015, high flow year: 2016).【Result】Rice yield in F1 is generally lower than F2, and there was no difference in rice yield between F1 and F2 in normal flow year, whereas it is 27.1% lower than F2 in high flow year. Rice yield was not affected by irrigation methods, but the difference between F1 and F2 was decreased with the increase of nitrogen level. In the F2, the AWD irrigation consumed the least irrigation water and obtained the highest IWP, which is 0.22 m3/m2 and 3.97 kg/m3, respectively. However, CF irrigation in F1 consumed the most irrigation water and obtained the lowest IWP. The IWP of F1 was 85.1% and 29.9% higher than F2 in high flow year and normal flow year, respectively. AE was affected by filed type, irrigation method, and rainfall year, and also varied in different rice growth period. The average AE of F1 and F2 were 0.9311 and 0.9347, AWD and CF irrigation were 0.9363 and 0.9296, and the high and normal flow year were 0.9307 and 0.9350, respectively. The AE of F1 and F2 are 0.9311 and 0.9347, AWD and CF irrigation are 0.9363 and 0.9296, and the average and high water years are 0.9307 and 0.9350. lowest AE was 0.9118 which was observed in panicle initiation after mid-season drainage. 【Conclusion】Irrigation water efficiency in ridge-paddy was general higher than hilled-paddy, AWD irrigation could improve irrigation water efficiency (IWP and AE) both in hilled-paddy and ridge-paddy. |
| Key words: Rice, Hilled-paddy, Ridge-paddy, Application;efficiency, Irrigation;water productivity |
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