| 姜 萍,袁永坤,朱日恒,戴耀文,沈逸菲,赵 峥,岳玉波,赵 琦,曹林奎.节水灌溉条件下稻田氮素径流与渗漏流失特征研究[J].农业环境科学学报,2013,32(8):1592-1596. |
| 节水灌溉条件下稻田氮素径流与渗漏流失特征研究 |
| Study on the Nitrogen Loss from Paddy Fields on Different Water Management |
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| DOI：10.11654/jaes.2013.08.015 |
| 中文关键词: 测坑 间歇灌溉 湿润灌溉 氮素流失 径流 渗漏 |
| 英文关键词: lysimeter intermittent irrigation moistening irrigation nitrogen loss runoff leaching |
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| 摘要点击次数: 2262 |
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| 中文摘要: |
| 采用测坑定位试验的方法研究不同灌溉条件下稻田系统氮素流失特征。结果表明：与常规淹灌（W1）处理相比，间歇灌溉（W2）和湿润灌溉（W3）等节水灌溉处理可分别减少4.37%和8.88%的灌水量、35.74%和5.98%的径流排水量以及2.01%和17.28%的渗漏排水量；整个水稻季，W1处理的总氮（TN）径流和渗漏流失负荷均为最高，分别为11.69、3.40 kg N·hm-2；与W1处理相比，较低的排水量导致W2处理和W3处理分别减少了52.01%和38.24%的TN径流流失，以及15.88%和42.06%的TN渗漏流失；W2处理和W3处理还分别提高了10.83%和5.46%的水稻籽粒产量。研究表明节水灌溉不仅能有效控制稻田氮素流失，并能在一定程度上提高水稻产量。 |
| 英文摘要: |
| A lysimeter experiment was conducted to reveal the effect of different water management on nitrogen（N） loss in paddy fields. Three treatments were applied in this study：flooding irrigation（W1）; intermittent irrigation（W2） and moistening irrigation（W3）. Our results suggested that compared to W1 treatment, the irrigation water of W2 and W3 was reduced by 4.37% and 8.88%. Meanwhile, the surface runoff water of W2 and W3 was reduced by 35.74% and 5.98%, and leaching water by 2.01% and 17.28%. In W1 treatment, 11.69 kg N·hm-2 and 3.40 kg N·hm-2 nitrogen lost through runoff and leaching separately. However, because of the diminished runoff and leaching water, the nitrogen loss of W2 and W3 was reduced by 52.01% and 38.24% through runoff, and 15.88% and 42.06% through leaching：In addition, the grain yields of W2 and W3 was increased by 10.83% and 5.46% compared to that of W1. |
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