模拟大气氮沉降对萍乡土壤酸化的初探  

Soil Acidification of Pingxiang in Response to Simulated Nitrogen Deposition

作　　者：王强[1] 宁茂宾 王科[1] 

机构地区：[1]萍乡高等专科学校 [2]安源中学,江西萍乡337000

出　　处：《萍乡高等专科学校学报》2012年第6期23-25,共3页Journal of Pingxiang College

基　　金：萍乡高等专科学校校级课题"大气氮沉降对土壤酸化及土壤主要养分影响"(编号:10PXKY-09)的阶段性成果之一

摘　　要：通过野外模拟试验,研究氮沉降增加对萍乡土壤酸化的影响。以尿素[CO(NH2)2]作为外加氮源,设置4种处理,分别为N0(对照,0g·m-2·a-1,以N计,下同)、N1(6g·m-2·a-1)、N2(12g·m-2·a-1)和N3(24g·m-2·a-1),每处理重复两次。结果显示,氮沉降引起土壤pH值下降;表层土壤比下层土壤更敏感;pH值的下降程度与氮沉降量及沉降时间呈正相关。Simulated nitrogen deposition experiment was set to study the effects of increased nitrogen deposition on soil acidification of Pingxiang. The treatments were designed as NO （control）, N 1, N2 and N3 at the doses of 0, 6, 12 and 24g.m2.a-1 respectively, with two replicates in each treatment. [CO（NH2）2] was used as the source of nitrogen. The result showed that nitrogen deposition led to the decrease of soil pH; topsoil was more sensitive to the others; the decreasing degree of soil pH was positive correlated with quantum and time.

关 键 词：氮沉降 土壤 酸化 

分 类 号：S714[农业科学—林学]