不同土壤改良措施对机械压实酸化蔗地土壤理化性质及微生物群落结构的影响

罗俊,林兆里,李诗燕,阙友雄,张才芳,杨仔奇,姚坤存,冯景芳,陈建峰,张华

Effects of different soil improvement measures on soil physicochemical properties and microbial community structures in mechanically compacted acidified sugarcane field

Jun LUO,Zhao-Li LIN,Shi-Yan LI,You-Xiong QUE,Cai-Fang ZHANG,Zai-Qi YANG,Kun-Cun YAO,Jing-Fang FENG,Jian-Feng CHEN,Hua ZHANG

表3 不同土壤改良措施对土壤贯入阻力和抗剪强度的影响

Table 3 Effects of different soil improvement measures on penetration resistance and shear strength resistance of soil

土层 Soil layer 土壤改良措施 Soil improvement measure 贯入阻力 Penetration resistance (kPa) 抗剪强度 Shear strength resistance (kg cm-2) 新植 New planting 宿根 Perennial root 新植 New planting 宿根 Perennial root 0-10 cm 对照 Control (B1) 13.53±4.74a 10.38±5.85ab 0.12±0.04b 0.07±0.02b 松土精 Loose soil essence (B2) 13.29±5.69a 9.38±4.55ab 0.11±0.03bc 0.07±0.03b 生物菌肥 Biological bacterial fertilizer (B3) 8.90±3.48b 11.97±5.69ab 0.09±0.02bc 0.08±0.02b 有机肥 Organic fertilizer (B4) 8.33±3.46b 7.02±5.09b 0.08±0.02c 0.06±0.02b 生石灰Quick lime (B5) 15.13±5.83a 13.58±4.46a 0.15±0.04a 0.11±0.02a 10-20 cm 对照 Control (B1) 25.63±8.46ab 20.39±4.01b 0.26±0.09ab 0.17±0.05ab 松土精 Loose soil essence (B2) 23.13±6.11ab 19.32±7.13b 0.23±0.06abc 0.16±0.06b 生物菌肥 Biological bacterial fertilizer (B3) 20.50±5.84b 24.53±10.30ab 0.21±0.08bc 0.21±0.11ab 有机肥 Organic fertilizer (B4) 19.53±6.30b 20.13±6.50b 0.17±0.07c 0.15±0.06b 生石灰Quick lime (B5) 28.25±8.45a 30.15±7.65a 0.29±0.08a 0.23±0.07a 20-30 cm 对照 Control (B1) 58.17±7.89ab 41.19±8.28bc 0.47±0.05ab 0.32±0.06bc 松土精 Loose soil essence (B2) 58.89±9.56ab 35.54±11.00c 0.46±0.06ab 0.31±0.06bc 生物菌肥 Biological bacterial fertilizer (B3) 54.41±6.74b 48.51±9.71ab 0.44±0.06bc 0.35±0.06ab 有机肥 Organic fertilizer (B4) 51.27±11.39b 35.47±9.34c 0.40±0.06c 0.27±0.05c 生石灰Quick lime (B5) 65.95±8.42a 53.55±12.17a 0.50±0.06a 0.39±0.05a 土层 Soil layer 土壤改良措施 Soil improvement measure 贯入阻力 Penetration resistance (kPa) 抗剪强度 Shear strength resistance (kg cm-2) 新植 New planting 宿根 Perennial root 新植 New planting 宿根 Perennial root 30-40 cm 对照 Control (B1) 61.17±7.66a 50.10±8.45b 0.51±0.04ab 0.41±0.05a 松土精 Loose soil essence (B2) 59.30±9.32a 51.28±8.90b 0.47±0.06b 0.38±0.06a 生物菌肥 Biological bacterial fertilizer (B3) 59.95±6.02a 56.89±10.99ab 0.52±0.05ab 0.43±0.06a 有机肥 Organic fertilizer (B4) 59.54±8.78a 54.86±6.47ab 0.49±0.06b 0.39±0.05a 生石灰Quick lime (B5) 64.32±5.88a 60.79±10.14a 0.56±0.05a 0.43±0.06a 平均 对照 Control (B1) 39.62±21.95b 30.52±17.55c 0.34±0.17b 0.24±0.14b Average 松土精 Loose soil essence (B2) 38.65±22.53bc 28.88±18.54c 0.32±0.17b 0.23±0.14b 生物菌肥 Biological bacterial fertilizer (B3) 35.94±22.91cd 35.48±20.70b 0.31±0.19b 0.27±0.16a 有机肥 Organic fertilizer (B4) 34.67±23.22d 29.37±19.51c 0.28±0.18c 0.22±0.13b 生石灰Quick lime (B5) 43.41±23.84a 39.52±21.12a 0.37±0.18a 0.29±0.14a F值 土层Soil layer (A) 880.72** 234.91** 587.98** 497.5** F-value 土壤改良措施Soil improvement measures (B) 13.63** 10.10** 14.67** 15.47** A×B 0.64 1.20 0.83 0.68