节点文献
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
【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.
- 【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