Studies on the Effects of Nitrogen Application and Soil Deep-loosing on Root Characteristics of Spring Maize
ZHANG Feng-lu, LIU Xin, ZHANG Yi-ming, LI Shao-kun, XIE Rui-zhi, XIU Wen-wen, NIU Xing-kui
ACTA AGRICULTURAE BOREALI-SINICA . 2012, (S1): 309 -314 .  DOI: 10.3969/j.issn.1000-7091.2012.z1.061