%0 Journal Article
%T Contents of nitrate and mineral elements and their relationships in leafy-vegetables<br>叶类蔬菜硝酸盐与矿质元素含量及其相关性研究
%A LI Bao-Zhen
%A WANG Zheng-Yin
%A LI Hui-He
%A ZHANG Hao
%A <br>李宝珍
%A 王正银
%A 李会合
%A 张 浩
%J 中国生态农业学报
%D 2004
%I 
%X The contents of nitrate,mineral nutrient elements and their relationships are studied in twenty-three leafy-vegetables in Chongqing. The results show that the content variations of nitrate and mineral elements are very great in the different vegetables and the different varieties; other vegetables especially celery are polluted by nitrate except asparagus lettuce ,west-romaine lettuce,pack-choi.The significant or very significant positive correlation in N,P and K and other mi-neral nutrient elements.In fresh leafy-vegetables,the correlation is significantly or very significantly positive in NO~-_3 and K,Na,Ca and Fe, and is negative in NO~-_3 and P,S,Mn,Zn,B and Mo in the dry vegetables,moreover there is a significantly negative relationship between NO~-_3 and B and P.
%K Leafy-vegetables
%K Nitrate
%K Mineral nutrient element
%K Relationship
%K Food safety<br>叶类蔬菜
%K NO-3
%K 矿质元素
%K 相关性
%K 食用安全性
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=03F54A49DE00578AA0E5DDF5BC021AA7&cid=1A8B5357F0EF07B8&jid=AB3ABF502E2E1FF39F0E3B80164C9031&aid=61978ABA15DD9F10&yid=D0E58B75BFD8E51C&vid=59906B3B2830C2C5&iid=E158A972A605785F&sid=A63576421B012172&eid=8477411EEDB08A86&journal_id=1671-3990&journal_name=中国生态农业学报&referenced_num=8&reference_num=5