黄土高原长期覆膜苹果园土壤物理退化与细根生长响应

孙文泰, 马明

Response of soil physical degradation and fine root growth on long-term film mulching in apple orchards on Loess Plateau

SUN Wen-Tai, MA Ming

表3 甘肃陇东苹果园覆膜后亚表层土壤物理性状相关性

Table 3 Correlation of soil physical properties of subsurface soil after film mulching in apple orchard of Longdong, Gansu

指标 Indicator 有机质含量 Organic matter content (g∙kg-1) 土壤含水量 Soil moisture (g∙cm-3) 土壤密度 Soil density (g∙cm-3) 黏粒含量 Clay content (%) 物理性 黏粒含量 Physical clay particles content (%) 土壤压实度Packing density of soil (g·cm-3) 团聚体破坏率 Aggregates processing damage rate (%) 水稳性团聚体平均质量直径 Mean weight diameter of water-stable aggregates (mm) 水稳性团聚体平均几何直径 Geometric mean diameter of water-stable aggregates (mm) 有机质含量 Organic matter content (g∙kg-1) 1 0.784** 0.068 0.097 -0.696** -0.260 -0.605** 0.438 0.678** 土壤含水量 Soil moisture (g∙cm-3) 1 -0.132 -0.244 -0.737** -0.411 -0.745** 0.746** 0.730** 土壤密度 Soil density (g∙cm-3) 1 0.655** 0.673** 0.628** 0.694** -0.678** -0.697** 黏粒含量 Clay content (%) 1 0.203 0.684** 0.597* -0.567* -0.280 物理性黏粒含量 Physical clay particles content (%) 1 0.646** 0.914** -0.663** -0.984** 土壤压实度 Packing density of soil (g·cm-3) 1 0.719** -0.528* -0.619** 团聚体破坏率 Aggregates processing damage rate (%) 1 -0.839** -0.923** 水稳性团聚体平均 质量直径 Mean weight diameter of water-stable aggregates (mm) 1 0.645** 水稳性团聚体平均 几何直径 Geometric mean diameter of water- stable aggregates (mm) 1