%0 Journal Article
%T Yield and nutrient balance of lettuce as influenced by reduced and optimized nitrogen application<br>氮肥优化减施对土壤-莴苣系统氮磷平衡及产量效益的影响
%A QUAN Zhi
%A QIN Hong-Ling
%A LI Ming-De
%A ZHU Yi-Jun
%A LIU Xin-Liang
%A WEI Wen-Xue
%A WU Jin-Shui
%A <br>全智
%A 秦红灵
%A 李明德
%A 朱亦君
%A 刘新亮
%A 魏文学
%A 吴金水
%J 中国生态农业学报
%D 2011
%I 
%X Environment and health quality of vegetable are closely related with food quality and human health.Most farmers use excessive chemical fertilizers to maximize yield.This practice,along with high irrigation and multiple cropping,results in soil degra-dation,nitrogen(N)/phosphorus(P) loss,and other severe environmental issues.A field experiment was carried out in a vegetable field of suburban Changsha City to determine the effects of reduced and optimized application of N fertilizer on soil nutrient balance a...
%K Reduced nitrogen fertilizer
%K Slow-release urea
%K Urease/nitrigication inhibitor
%K Soil conditioner
%K NO3--N
%K Olsen-P
%K Nitrate<br>氮肥减施
%K 缓释尿素
%K 脲酶/硝化抑制剂
%K 土壤调理剂
%K 硝态氮
%K 有效磷
%K 硝酸盐
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=03F54A49DE00578AA0E5DDF5BC021AA7&cid=1A8B5357F0EF07B8&jid=AB3ABF502E2E1FF39F0E3B80164C9031&aid=C5FFE4667A31546336F2508122F52B74&yid=9377ED8094509821&vid=2A8D03AD8076A2E3&iid=E158A972A605785F&sid=0B52E912EAFE3700&eid=195767709E606C85&journal_id=1671-3990&journal_name=中国生态农业学报&referenced_num=0&reference_num=23