干旱区研究
Soil nutrient evaluation of cotton field based on distance clustering and K-means dynamic clustering
FAN Xianglong,LYU Xin,ZHANG Ze,GAO Pan,ZHANG Qiang,YIN Caixia,YI Xiang
Arid Zone Research . 2021, (4): 980 -989 .  DOI: 10.13866/j.azr.2021.04.09