有机物料还田对土壤导水导气性的综合影响

赵丽丽,李陆生,蔡焕杰,石小虎,薛少平

Comprehensive Effects of Organic Materials Incorporation on Soil Hydraulic Conductivity and Air Permeability

ZHAO LiLi,LI LuSheng,CAI HuanJie,SHI XiaoHu,XUE ShaoPing

表3 2014—2016年有机物料还田不同土层土壤容重、孔隙度、孔隙分布和孔隙连通性变化

Table 3 Changes in soil bulk density, total porosity, macro and micro-porosity distribution and pore continuity of different depths with various organic amendments to soils in 2014-2016

年份 Year 土层深度 Depth (cm) 处理 Treatments 容重 Bulk density (g·cm-3) 孔隙度 Total porosity (%) 大孔隙 Macro- porosity (%) 小孔隙 Micro- porosity (%) 孔隙连通性 Pore continuity index (μm2) 2015 0—10 PT 1.32±0.05a 50.29±1.98a 17.50±0.93c 32.79±1.23a 61.65±9.80c CK 1.33±0.06a 50.00±2.15a 17.42±1.25c 32.58±2.01a 58.90±13.88c MWS 1.27±0.02a 52.44±0.65a 25.66±2.44a 26.78±2.25b 119.06±14.54b MWH 1.29±0.05a 51.51±2.06a 22.72±3.18ab 28.79±1.21b 141.86±19.90a MFS 1.33±0.04a 50.05±1.60a 20.57±1.35b 29.48±2.51b 50.40±9.41c MBF 1.32±0.03a 49.63±1.26a 21.85±2.46b 27.77±1.63b 58.52±9.54c 10—20 PT 1.44±0.05a 46.03±1.71a 20.60±1.94a 25.43±0.98c 27.88±4.89c CK 1.46±0.08a 45.11±3.05a 19.82±1.27a 25.29±0.73c 27.21±7.92c MWS 1.41±0.02a 46.85±0.82a 20.65±2.04a 26.40±1.44bc 45.98±7.68b MWH 1.39±0.04a 47.65±1.61a 20.35±2.31a 27.30±0.85a 129.09±13.31a MFS 1.44±0.04a 45.96±1.32a 18.54±1.94a 27.42±0.89a 48.67±11.82b MBF 1.46±0.05a 45.14±1.97a 18.06±1.97a 26.88±0.67ab 57.44±7.80b 20—30 PT 1.68±0.04a 36.89±1.51a 5.99±1.72b 30.90±2.04a 31.59±7.46a CK 1.69±0.04a 36.24±1.43a 5.18±1.98b 31.06±0.54a 37.36±7.08a MWS 1.66±0.04a 37.53±1.35a 10.61±1.77a 26.92±1.80b 22.23±3.58b MWH 1.64±0.03a 38.32±1.11a 11.94±3.38a 26.38±2.27b 20.21±2.41b MFS 1.68±0.03a 36.78±1.13a 10.55±1.75a 26.23±0.62b 36.72±2.79a MBF 1.67±0.03a 36.40±1.05a 10.03±1.84a 26.37±1.13b 31.61±1.82a 2016 0—10 PT 1.32±0.05a 50.29±1.98a 17.50±0.93d 32.79±1.23a 61.65±9.80c CK 1.31±0.04a 50.62±1.66a 17.94±1.10d 32.68±1.04a 61.66±11.40c MWS 1.25±0.02a 53.01±0.92a 27.52±0.87a 25.49±0.57c 138.83±23.22b MWH 1.26±0.04a 52.71±1.57a 22.86±2.24b 29.86±0.67b 198.05±25.09a MFS 1.30±0.02a 51.32±0.89a 20.14±1.47c 31.17±0.57a 54.01±10.49c MBF 1.30±0.03a 51.01±1.10a 22.18±1.66bc 28.84±0.57b 50.36±9.76c 10—20 PT 1.44±0.55a 46.03±1.71c 20.60±1.94b 25.43±0.98c 27.88±4.89d CK 1.43±0.03a 46.13±1.34c 21.00±1.07b 25.13±0.29c 26.90±3.96d MWS 1.38±0.02bc 48.29±0.80ab 23.61±0.99a 25.67±0.30c 73.19±15.82b MWH 1.36±0.02c 48.79±0.86a 20.67±1.15b 28.12±0.35a 121.56±26.23a MFS 1.39±0.03bc 47.90±1.36ab 21.75±1.67b 26.15±0.79b 50.10±3.41c MBF 1.41±0.02ab 47.17±0.65bc 21.17±0.99b 26.00±0.79b 51.76±7.29c 20—30 PT 1.68±0.04ab 36.89±1.51bc 5.99±1.72d 30.90±2.04a 31.59±7.46b CK 1.69±0.03a 36.29±1.11c 5.48±1.40d 30.81±0.67a 34.26±6.89ab MWS 1.64±0.03bc 38.41±1.32ab 12.95±1.46a 25.46±0.44c 18.19±4.58c MWH 1.61±0.03c 39.61±1.34a 12.31±1.89ab 27.30±0.57b 16.39±3.85c MFS 1.66±0.03ab 37.66±1.32bc 10.11±1.69bc 27.56±0.37b 34.73±6.69ab MBF 1.66±0.03ab 37.44±1.31bc 9.49±1.91c 27.95±0.60b 41.37±6.41a