[1]College of Resources and Environment,Shandong Agricultural University,Taian,Shandong,271018,China;
[1]College of Resources and Environment,Shandong Agricultural University,Taian,Shandong,271018,China;
[1]College of Resources and Environment,Shandong Agricultural University,Taian,Shandong,271018,China;
[1]College of Resources and Environment,Shandong Agricultural University,Taian,Shandong,271018,China;
[1]College of Resources and Environment,Shandong Agricultural University,Taian,Shandong,271018,China;
Apple Ttrees; Canopy Nitrogen Contents; Hyperspectrum; Estimating Model;