东北典型黑土区旱地耕层土壤肥力指标的纬度变化特征及其关系

尹思佳,李慧,徐志强,裴久渤,戴继光,刘雨薇,李艾蒙,于雅茜,刘维,汪景宽

Spatial Variations and Relationships of Topsoil Fertility Indices of Drylands in the Typical Black Soil Region of Northeast China

YIN SiJia,LI Hui,XU ZhiQiang,PEI JiuBo,DAI JiGuang,LIU YuWei,LI AiMeng,YU YaXi,LIU Wei,WANG JingKuan

表2 研究区土壤肥力指标的描述性统计

Table 2 The descriptive statistics of soil fertility indices in study area

土壤肥力指标 Soil fertility index 最小值 MIN 最大值 MAX 平均值 MN 标准差 SD 变异系数 CV (%) 有机质Organic matter (g·kg-1) 10.00 61.61 30.54 11.82 38.72 pH 4.67 7.76 6.15 0.68 11.11 碱解氮Alkali-hydrolyzale nitrogen (mg·kg-1) 15.05 292.52 114.81 80.44 70.06 全钾Total K (g·kg-1) 11.38 52.55 29.43 15.59 52.95 全磷Total P (g·kg-1) 0.30 1.11 0.63 0.21 33.96 速效钾Available K (mg·kg-1) 17.89 150.03 74.77 37.28 49.86 速效磷Available P (mg·kg-1) 0.62 86.39 33.22 25.65 77.21 容重Bulk density (g·cm-3) 0.89 1.29 1.09 0.10 9.32 大微团聚体质量比Mass ratio of macro- and micro-aggregates 4.59 60.63 21.22 13.73 64.71 含水量Water content (%) 14.37 31.05 20.31 0.04 21.10 温度Temperature (℃) 8.37 16.43 12.47 1.91 15.31