1. School of Information & Computer, Anhui Agricultural University, Hefei, Anhui, China
2. Anhui Agricultural University, Anhui Provincial Engineering Laboratory for Beidou Precision Agriculture Information, Hefei, Anhui, China
3. Anhui University, Information Materials and Intelligent Sensing Laboratory of Anhui Province, Hefei, Anhui, China
4. School of Plant Protection, Anhui Agricultural University, Hefei, Anhui, China