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应用生态学报 ›› 1995, Vol. 6 ›› Issue (s1): 62-66.

• 研究论文 • 上一篇    下一篇

稻田土壤中N的渗漏损失研究

王家玉, 王胜佳, 陈义, 郑纪慈   

  1. 浙江省农业科学院土壤肥料研究所, 杭州310021
  • 收稿日期:1993-01-19 修回日期:1993-07-30 出版日期:1995-12-25 发布日期:1995-12-25
  • 基金资助:

    浙江省自然科学基金资助项目

Leaching loss of nitrogen in rice field

Wang Jiayu, Wang Shengjia, Chen Yi, ZhengJici   

  1. Institute of Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences,Hangzhou 310021
  • Received:1993-01-19 Revised:1993-07-30 Online:1995-12-25 Published:1995-12-25

摘要: 应用大型原状土柱渗漏计研究稻田中N渗漏损失的基本规律及其机制,初步探明硝态氮淋失是稻田土壤中N淋失的重要形式之一,双季稻种植期间的硝态氮淋失量可达20kg·ha-1,N肥用量及品种对N淋失有明显影响,建议每季水稻的N肥用量不超过150kg·ha-1

关键词: 氮素, 硝态氮, 铵态氮, 淋失

Abstract: Studies on the regularity and mechanism of leaching loss of nitrogen in rice field show thatNO3--N leaching is the main loss of nitrogen leached from rice field, which reaches to 20kg N·ha-1 during the planting of double-harvest rice. The sort of nitrogen fertilizer andits application rate have a strong effect on the leaching loss of nitrogen. It's suggestedthat the application rate of fertilizer N should be less than 150kg· ha-1 for each cropping of rice.

Key words: Nitrogen, Nitric nitrogen, Ammoniacal nitrogen, Leaching loss