Liang Tang1, Yan Zhu1, Leilei Liu2, Weixing Cao1 and Ganghua Li Sr.3, (1)National Engineering and Technology Center for Information Agriculture, Key Laboratory of Crop System Analysis and Decision Making, Ministry of Agriculture, Jiangsu Key Laboratory for Information Agriculture, Nanjing Agricultural University, Nanjing, China, (2)National Engineering and Technology Center for Information Agriculture, Key Laboratory of Crop System Analysis and Decision Making, Ministry of Agriculture, Jiangsu Key Laboratory for Information Agriculture, Nanjing Agricultural University, Nanjing, CHINA, (3)Nanjing Agricultural University, Nanjing, CHINA