近35年红壤稻区土壤肥力时空演变特征—以进贤县为例

王远鹏,黄晶,孙钰翔,柳开楼,周虎,韩天富,都江雪,蒋先军,陈金,张会民

Spatiotemporal Variability Characteristics of Soil Fertility in Red Soil Paddy Region in the Past 35 Years—A Case Study of Jinxian County

WANG YuanPeng,HUANG Jing,SUN YuXiang,LIU KaiLou,ZHOU Hu,HAN TianFu,DU JiangXue,JIANG XianJun,CHEN Jin,ZHANG HuiMin

表2 隶属函数曲线转折点取值

Table 2 The turning point of membership function

转折点 Turning point pH SOM (g·kg-1) AN (mg·kg-1) AP (mg·kg-1) AK (mg·kg-1) x1 4.5 20 100 5 50 x2 6.0 40 200 40 150 x3 7.0 x4 8.5