Spatial Distribution of Winter Wheat Leaf SPAD Value and its Relationship with Nitrogen Nutrition Status
LI Ying-xue,XU De-fu,XIE Xiao-jin,SHEN Shuang-he,PAN Wen-bo(College of Applied Meteorology,Nanjing University of Information Science and Technology,Nanjing 210044,China)
Chinese Journal of Agrometeorology . 2009, (02): 164 -168 .