免耕秸秆覆盖对半干旱区土壤团聚体稳定性和玉米产量的影响

马小明, 齐翔鲲, 谭雪, 史孟豫, 王玉凤, 付健, 杨克军

Effects of No-tillage with Straw Mulching on Soil Aggregate Stability and Maize Yield in Semi-Arid Region

Ma Xiaoming, Qi Xiangkun, Tan Xue, Shi Mengyu, Wang Yufeng, Fu Jian, Yang Kejun

表1 不同年限免耕秸秆覆盖还田下土壤容重和含水量的变化

Table 1 Changes of soil bulk density and moisture content under no-tillage with straw mulching and returning over different years

土层深度 Soil depth (cm) 处理 Treatment 容重 Bulk density (g/cm3) 含水量 Moisture content (%) 0~10 CK 1.33±0.10a 12.01±0.27d T1 1.32±0.03a 14.54±0.10c T2 1.25±0.02b 17.19±1.01b T3 1.10±0.02c 24.16±0.46a 10~20 CK 1.45±0.02a 8.56±0.35c T1 1.50±0.02a 11.98±0.28b T2 1.42±0.04a 13.85±0.07b T3 1.26±0.01b 17.62±1.21a 20~30 CK 1.53±0.01a 6.48±0.31c T1 1.52±0.01a 10.14±0.40b T2 1.44±0.04b 12.44±0.65a T3 1.38±0.01b 13.70±0.12a