| 青紫泥水稻田磷素径流流失量研究 |
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| 引用本文： | 倪雄伟,梁新强,田光明,黄锦法.青紫泥水稻田磷素径流流失量研究[J].安徽农业科学,2012(13):7767-7768,7815. |
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| 作者姓名： | 倪雄伟 梁新强 田光明 黄锦法 |
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| 作者单位： | 浙江省嘉兴市土壤肥料工作站,浙江嘉兴,314050;浙江大学环境与资源学院,浙江杭州,310058 |
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| 摘 要： | 目的]为合理施用磷肥,减轻磷素污染提供科学依据。方法]对浙北水网平原地区青紫泥稻田施用磷肥流失进行研究。结果]几次降雨事件中TP的累积流失负荷在0.179～0.454 kg/hm2,占当季施肥量的1.72%～1.82%;磷的径流输出负荷与降雨量存在较好的相关性;在不同磷肥施用水平,降雨径流的总磷累积流失负荷随着施肥量的增加而增加。结论]青紫泥水稻土农田晚稻施磷(P2O5)不宜超过40 kg/hm2。
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| 关 键 词： | 磷素 径流 青紫泥 |
Study of Runoff of Phosphorus in Rice Field of Purple Slurry |
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| Institution: | NI Xiong-wei et al(Jiaxing Soil Fertilizer Workstation,Jiaxing,Zhejiang 314050) |
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| Abstract: | Objective]The research aimed to provide the scientific basis for the reasonable utilization of P fertilizer and the alleviation of P contamination.Method]P runoff in rice field of purple slurry in water network of north Zhejiang was studied.Result] The discharge of TP in several rainfall events reached 0.179-0.454 kg/hm2,accounting for 1.72%-1.82% of fertilizer amount.There was good relationship between the discharge of P runoff and rainfall capacity.The discharge of TP increased with the increase of phosphorus fertilizer amount.Conclusion] The amount of phosphorus fertilizer amount shouldn’t above 40 kg/hm2. |
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| Keywords: | Phosphorus Runoff Purple slurry |
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