太湖地区麦季氮素淋失特征  

Nitrogen Leaching in Wheat Growing Season in Taihu Lake Area

作　　者：连纲[1] 王德建[1] 

机构地区：[1]中国科学院南京土壤研究所,江苏南京210008

出　　处：《土壤通报》2004年第2期163-165,共3页Chinese Journal of Soil Science

基　　金：中国科学院知识创新工程KZCX2-31资助

摘　　要：通过排水采集器模拟试验,研究了太湖地区不同施肥水平下,麦作期间农田氮素淋洗特点。结果表明,麦季氮素渗漏损失以NO3--N为主,占总氮量的36.2%～99.1%,平均高达82.9%,NO3--N淋洗量随施肥量的增加而增加。不同施肥水平及肥料种类,对于NO3--N淋洗有着不同的影响,在试验的施肥水平下,麦作期间氮素淋失对地下水存在潜在污染。Using lysimeter experiment we studied nitrogen leaching from paddy field in wheat growing season under different fertilizer application levels and treatments in Taihu lake area. Results showed that nitrogen was leached mainly in the form of NO_3^--N, and it was 36.2%-99.1% of the total leached nitrogen, with average of 82.9%. Different fertilizer application levels and treatments had different effect on nitrogen leaching. Under the experiment level, nitrogen leaching could bring potential pollution to underground water.

关 键 词：太湖地区 氮素淋失 麦作期间 排水采集器 模拟试验 施肥 

分 类 号：S143.1[农业科学—肥料学] S512[农业科学—农业基础科学]