应用Geoprobe对河北栾城土壤硝态氮含量进行计算  

Calculation for the Accumulation of Nitratenitrogen in a Luancheng Soil by Geoprobe

作　　者：李晓欣[1] 胡春胜[2] 雷玉平[2] 张玉铭[2] 

机构地区：[1]中科院生态环境研究中心 [2]中科院遗传发育所农业资源研究中心,河北石家庄050021

出　　处：《土壤通报》2006年第5期906-908,共3页Chinese Journal of Soil Science

基　　金：国家自然科学基金资助项目(30570335)

摘　　要：利用Geoprobe对土壤剖面取样，分析并计算了0—20．4m土层硝态氮的累积量，研究表明，施肥量的上升和地下水埋深的下降，使得多余的氮肥以硝态氮的形式存储在土壤剖面中，在传统的施肥制度下，0—20．4m剖面总累积的硝态氮量为1769kg hm^-2，白地表至下，土壤硝态氮的分布存在三个累积层，分别为0—5．4m，7．2—12m，14．7—18．4m；而且三个层次累积的硝态氮量随深度呈递减的趋势。In this paper we analyzed the distribution of nitratenitrogen in different soil depth profiles in a field under traditional planting for years, and we also calculated the amount of nitratenitrogen accumulated in the Luancheng soil. The results showed： with the increasing fertilizer N input and soil water table, significant amounts of nitrate were lost from the soil,and there were 1769kg ha^-1 nitratenitrogen accumulated in the soil from 0 to 20.4 meter depth. In the soil depth profile there were three nitrate accumulation layers： 0 - 5.4m,7.2 - 12m, 14.7 - 18.4m, and with the depth increasing the content of nitrate decreased.

关 键 词：Geopmbe 硝态氮 累积 分布 土壤 

分 类 号：S153.61[农业科学—土壤学]