College of Resources and Environment;
Shandong Agricultural University;
Tai’an;
China;
Key Laboratory of Agricultural Ecology and Environment;
Shandong Agricultural University;
Tai’an;
China;
College of Horticulture Science and Engineering;
Shandong Agricultural University;
National Apple Engineering and Technology Research Center;
Tai’an;
China;
National Engineering Research Center for Information Technology in Agriculture;
Beijing;
China;
Apple; Leaves; Chlorophyll; Content; Hyperspectral; Visualization;