@article{董海荣:728, author = {[董海荣, 李金才, 李存东]}, title = {不同NH4+/NO3-比例的氮素营养对棉花氮素代谢的影响}, publisher = {应用生态学报}, year = {2004}, journal = {应用生态学报}, volume = {}, number = {4}, eid = {728}, pages = {728-730}, keywords = {}, url = http://www.cjae.net/CN/abstract/article_6588.shtml }