Influence of puddling procedures on the quality of rice paddy drainage water
Influence of puddling procedures on the quality of rice paddy drainage water
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DOI：
10.1016/j.agwat.2008.12.005
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发表时间：
2009-06
影响因子：
6.7
通讯作者：
H. Somura;I. Takeda;Y. Mori
中科院分区：
文献类型：
--
作者：
H. Somura;I. Takeda;Y. Mori
稻田排水水质受到拖拉机在稻田中的土壤搅土和排水闸门打开的强烈影响。污水中的污染物浓度迅速增加时，搅拌过程开始，并保持在整个搅拌期间的高浓度。此外，在搅拌程序停止后，高浓度并没有立即降低。此外，溶解性氮和磷的比例增加，每天在后半期的搅泥期，由于排放的排水与化肥。此外，泥化期颗粒态氮、磷的排放负荷大于灌溉期的排放负荷。水田翻泥期间的排放也增加了污染物的年总负荷。
Drainage water quality in rice paddies was strongly influenced by the puddling of soil in the paddy fields by tractors and in response to opening of drainage gates. The concentrations of contaminants in drainage water increased rapidly when the puddling process began and were maintained at high concentrations throughout the puddling period. Moreover, the high concentrations did not decrease immediately after the puddling procedures ceased. Additionally, the ratio of dissolved nitrogen and phosphorous to total nitrogen and total phosphorous increased daily during the last half of the puddling period, due to discharge of chemical fertilizers with the drainage water. Also, the loads of particulate nitrogen and phosphorus discharged during the puddling period were larger than the loads discharge during irrigation. The discharge from paddy fields during puddling also increased the total annual contaminant load.