1Effects of long-term fertilization and cropping regimes on total nitrogen and organic nitrogen forms in a Mollisol of Northeast China

作者： Li, H.; Gao, Q.; Gao, H. J.; Zhu, P.; Wang, L. C.; SCI

机构： Jilin Agr Univ, Coll Resource & Environm Sci, Changchun, Peoples R China; Jilin Acad Agr Sci, Inst Agr Resources & Environm, Changchun, Peoples R China;

来源：PLANT SOIL AND ENVIRONMENT

关键词： acid hydrolysable nitrogen long-term experiment organic and mineral fertilization continuous maize maize-soybean rotation