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不同水分、施氮量对土壤中硝态氮含量分布的影响

Effect of Irrigation and Nitrogen Fertilizer on NO3--N Content and Distribution in Soil

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【作者】 刘微赵同科王丽英

【Author】 LIU Wei~1,ZHAO Tong-ke~(2,3),WANG Li-ying~3 (1.College of Resource and Environment,Agriculture University of Hebei,Baoding 071001,China;2.Institute of Plant Nutrition and Resource,Beijng Academy of Agricultural and Forestry Sciences,Beijing100089,China;3.Institute of Agriculture Resource and Environment,Hebei Academy of Agriculture and Forestry Sciences,Shijiazhuang050051 China)

【机构】 河北农业大学资源环境学院北京市农林科学院植物营养与资源研究所河北省农林科学院农业资源环境研究所 河北保定071001北京100089河北省农林科学院农业资源环境研究所河北石家庄050051

【摘要】 通过田间试验,研究了不同氮肥用量和灌水量情况下土壤中硝态氮的动态分布。结果表明,土壤剖面的硝态氮含量随着施氮量的增加而增加,在同一施氮量水平下,随着土壤深度的增加,土壤中硝态氮含量递减。在冬小麦的整个生育期中,拔节期的追肥灌水有助于硝态氮向土壤深处移动,甚至有可能淋洗出根层,对地下水产生影响。

【Abstract】 Based on the field experiments of nitrogen fertilizer and irrigation applied to winter wheat,the effects of quantity on its dynamic distribution of soil NO3--N were studied.The results indicated that the content of soil NO3-N increased with increasing amount of N fertilizer application,and under the same level of nitrogen fertilizer,from top soil to deep layer of soil,the content of soil NO-3-N was decreased.According to the amount of NO-3-N in the deep layer soil during the growth of winter wheat,irrigation and fertilization help to NO-3-N leaching,so it was very easy to seep into ground-water and pollute the environment.

【关键词】 冬小麦土壤硝态氮含量分布
【Key words】 Winter wheatSoilNO3--NContentDistribution
【基金】 河北省农林科学院重点项目资助(A03-1-08-19)
  • 【文献出处】 华北农学报 ,Acta Agriculturae Boreali-Sinica , 编辑部邮箱 ,2006年03期
  • 【分类号】S158
  • 【被引频次】69
  • 【下载频次】495
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