Open AccessStudy on prolonged effect of humic acid-urea (long-term urea) on maize
Author(s) -
Hongmei Ma,
Junmei Qin,
Zhaojun Li,
Gailing Wang,
Xin Lü
Publication year - 2010
Publication title -
zhongguo shengtai nongye xuebao
Language(s) - English
Resource type - Journals
ISSN - 1671-3990
DOI - 10.3724/sp.j.1011.2009.00651
Subject(s) - urea , humic acid , term (time) , chemistry , organic chemistry , physics , fertilizer , quantum mechanics