%0 Journal Article
%T Effects of a combination of organic and inorganic fertilization on nitrogen leaching from purple soil with sloping cropland<br>有机-无机肥配施对紫色土坡耕地氮素淋失的影响
%A 汪涛
%A 朱波
%A 况福虹
%A 张剑
%A 王振华
%A 周明华
%J 环境科学学报
%D 2010
%I 
%X Lysimeter experiments in a purple soil with a hilly slope were performed to study the effects of combined application of organic and inorganic fertilizers on nitrogen leaching. The results showed that accumulated nitrate decreased significantly due to organic-inorganic fertilization, suggesting that the nitrate accumulation process of sloping cropland in purple soil was affected by fertilization styles. Measured nitrate-N contents were in the range of 0.15~46.99 mg·L-1 during the period 2004 to 2006, which accounted for 66.4%~96.3% of the total nitrogen. Total soil nitrogen contents of organic-inorganic fertilization (OMNPK, RSDNPK) declined by 71.0% and 61.4%, respectively, and total nitrogen leaching fluxes of OMNPK or RSDNPK treatments decreased by 48.1% and 31.6%, respectively, compared to conventional NPK fertilizer treatments at the same total N application rates. It could be concluded that nitrogen leaching decreases through the combination of organic and inorganic fertilization. Therefore, it is important to control nitrate pollution of shallow groundwater in the area of purple soil via changing fertilization modes.
%K organic-inorganic fertilization
%K purple soil
%K nitrogen
%K leaching<br>有机
%K 无机
%K 紫色土
%K 氮素
%K 淋失
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=03A55E61A8750ACAC6AF81EF9E2AC838&aid=F690BA656931509594B1E1E4C3E1FC66&yid=140ECF96957D60B2&vid=340AC2BF8E7AB4FD&iid=E158A972A605785F&sid=DBEE434FCBFED297&eid=E339BF74025BB291&journal_id=0253-2468&journal_name=环境科学学报&referenced_num=3&reference_num=0