黑土旱地改稻田土壤水稳性团聚体有机碳和全氮的变化特征
|
|
马原,迟美静,张玉玲,范庆峰,虞娜,邹洪涛
|
Change Characteristics of Organic Carbon and Total Nitrogen in Water-Stable Aggregate After Conversion from Upland to Paddy Field in Black Soil
|
|
Yuan MA,MeiJing CHI,YuLing ZHANG,QingFeng FAN,Na YU,HongTao ZOU
|
|
表3 旱地改稻田后不同年限土壤团聚体有机碳和全氮含量
|
Table 3 OC and TN contents in soil aggregate after conversion from upland to paddy field for different years
|
|
年限
Year (a) | 土层深度
Soil depth (cm) | >2 mm | 2-0.25 mm | 0.25-0.053 mm | <0.053 mm | | OC (g·kg-1) | TN (g·kg-1) | OC (g·kg-1) | TN (g·kg-1) | OC (g·kg-1) | TN (g·kg-1) | OC (g·kg-1) | TN (g·kg-1) | | 0 | 0-20 | 4.2±0.1 | 0.3±0.0 | 14.0±1.5 | 1.1±0.1 | 7.7±1.0 | 0.6±0.1 | 4.0±0.5 | 0.3±0.1 | | 20-40 | 3.2±0.3 | 0.2±0.0 | 10.2±0.7 | 0.8±0.1 | 7.1±0.5 | 0.5±0.1 | 3.1±0.2 | 0.2±0.0 | | 40-60 | 1.1±0.5 | 0.1±0.0 | 7.8±2.1 | 0.6±0.2 | 4.6±0.2 | 0.4±0.0 | 2.8±0.9 | 0.2±0.1 | | 3 | 0-20 | 2.3±0.4 | 0.2±0.0 | 5.7±0.1 | 0.4±0.0 | 6.1±0.6 | 0.5±0.1 | 3.4±0.4 | 0.3±0.0 | | 20-40 | 0.5±0.1 | 0.0±0.0 | 4.7±0.4 | 0.4±0.0 | 6.0±1.0 | 0.5±0.1 | 4.4±0.9 | 0.4±0.1 | | 40-60 | 0.7±0.2 | 0.1±0.0 | 4.9±0.3 | 0.4±0.0 | 4.9±1.5 | 0.4±0.1 | 3.7±1.1 | 0.3±0.1 | | 5 | 0-20 | 4.4±0.7 | 0.4±0.8 | 10.1±0.5 | 0.8±0.1 | 7.3±1.2 | 0.6±0.1 | 3.9±0.4 | 0.3±0.0 | | 20-40 | 1.6±0.5 | 0.1±0.0 | 8.2±0.5 | 0.6±0.0 | 9.8±0.6 | 0.8±0.1 | 5.2±0.6 | 0.4±0.1 | | 40-60 | 0.6±0.3 | 0.1±0.0 | 6.6±1.1 | 0.5±0.0 | 8.7±1.0 | 0.7±0.1 | 5.7±0.8 | 0.5±0.1 | | 10 | 0-20 | 2.6±0.5 | 0.2±0.0 | 8.2±1.6 | 0.6±0.1 | 9.1±1.0 | 0.7±0.1 | 5.1±0.7 | 0.4±0.1 | | 20-40 | 2.4±1.3 | 0.2±0.1 | 7.1±1.0 | 0.6±0.1 | 8.8±0.8 | 0.7±0.0 | 5.7±0.8 | 0.5±0.1 | | 40-60 | 0.6±0.2 | 0.0±0.0 | 6.4±0.5 | 0.5±0.1 | 9.2±1.2 | 0.7±0.1 | 6.4±0.7 | 0.5±0.1 | | 17 | 0-20 | 8.3±1.0 | 0.7±0.2 | 11.2±0.1 | 0.9±0.2 | 6.3±0.9 | 0.5±0.2 | 3.5±0.3 | 0.3±0.1 | | 20-40 | 6.9±0.9 | 0.5±0.1 | 9.0±1.9 | 0.6±0.1 | 8.7±2.4 | 0.6±0.2 | 4.6±0.9 | 0.3±0.0 | | 40-60 | 0.7±0.1 | 0.1±0.0 | 8.8±0.8 | 0.7±0.1 | 9.3±0.1 | 0.8±0.1 | 6.8±0.9 | 0.4±0.0 | | 20 | 0-20 | 3.1±0.3 | 0.2±0.0 | 11.3±1.1 | 0.8±0.1 | 11.4±1.6 | 0.8±0.1 | 6.0±0.6 | 0.4±0.0 | | 20-40 | 1.9±0.9 | 0.1±0.0 | 9.9±1.5 | 0.7±0.1 | 8.4±0.5 | 0.7±0.1 | 6.2±0.7 | 0.5±0.1 | | 40-60 | 2.2±0.7 | 0.2±0.1 | 11.4±0.6 | 0.7±0.1 | 7.6±0.4 | 0.8±0.1 | 4.4±0.5 | 0.3±0.0 | | 25 | 0-20 | 5.9±0.8 | 0.4±0.1 | 15.2±1.8 | 1.1±0.2 | 10.9±1.9 | 0.8±0.2 | 4.4±1.3 | 0.3±0.1 | | 20-40 | 4.1±1.9 | 0.3±0.2 | 10.7±1.1 | 0.8±0.1 | 9.6±0.6 | 0.7±0.1 | 4.3±1.3 | 0.3±0.1 | | 40-60 | 1.6±0.4 | 0.2±0.1 | 5.8±0.9 | 0.8±0.2 | 5.9±0.7 | 0.7±0.1 | 4.9±0.9 | 0.5±0.1 | | 双因素方差分析的P值P values of two-ways ANOVA | | 年限Year | 0.030* | 0.070 ns | 0.000*** | 0.000*** | 0.000*** | 0.001*** | 0.004** | 0.009** | | 土层Soil depth | 0.000*** | 0.000*** | 0.000*** | 0.000*** | 0.004** | 0.884 ns | 0.328 ns | 0.143 ns | 年限×土层
Years×Soil depth | 0.680 ns | 0.550 ns | 0.790 ns | 0.220 ns | 0.960 ns | 0.436 ns | 0.228 ns | 0.281 ns |
|
|
|