Effects of Different Nitrogen Applied Levels on Nitrogen Runoff Loss in Oilseed Rape Fields

YU Qiao-gang; YE Jing; MA Jun-wei; SUN Wan-chun; WANG Qiang; JIANG Li-na; FU Jian-rong; CHEN Yi

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Effects of Different Nitrogen Applied Levels on Nitrogen Runoff Loss in Oilseed Rape Fields

更新时间：2024-11-07

- Effects of Different Nitrogen Applied Levels on Nitrogen Runoff Loss in Oilseed Rape Fields
- Vol. 25, Issue 3, (2011)
- 作者机构：
  
  浙江省农业科学院环境资源与土壤肥料研究所,杭州,310021
- 作者简介：
- 基金信息：
- DOI：
  CLC： S157.1
- Published：2011
- 稿件说明：
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YU Qiao-gang, YE Jing, MA Jun-wei, et al. Effects of Different Nitrogen Applied Levels on Nitrogen Runoff Loss in Oilseed Rape Fields[J]. 2011, 25(3).
DOI：

YU Qiao-gang, YE Jing, MA Jun-wei, et al. Effects of Different Nitrogen Applied Levels on Nitrogen Runoff Loss in Oilseed Rape Fields[J]. 2011, 25(3). DOI：

摘要

采用野外田间试验

研究了浙北平原不同施氮水平对油菜地土壤氮素流失形态与含量的影响。结果表明

施肥的时间与降雨间隔对氮素的流失形态和浓度有明显影响

硝态氮是氮素流失的主要形态

占流失无机氮的比例为0.56～0.95;但若施肥后短期内降雨

铵态氮流失占有量增加

占流失无机氮的比例为0.37～0.42;氮素的流失量与施肥水平明显相关

每1hm2土壤增加氮素用量60kgN时

流失负荷增加2.5%～16.1%;采用有机无机配施的模式可使油菜地土壤氮素流失减少8.6%～16.3%

有效降低径流水中氮素浓度

油菜产量增加8.2%～13.7%

有机无机配施的施肥模式有助于减少氮素流失和提高油菜产量。

Abstract

The effect of different nitrogen applied level on nitrogen transformation form and runoff loss content were studied in the north plain region of Zhejiang province by oilseed rape field experiments.The results showed that

the fertilized period and rain fertilization interval had a significant influence on nitrogen export form and concentration in the runoff loss water.Nitrate was the main form nitrogen

and the ratio of nitrate nitrogen to inorganic nitrogen was from 0.56 to 0.95 in the runoff loss water.Howe...

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