Acta Prataculturae Sinica ›› 2023, Vol. 32 ›› Issue (1): 75-88.DOI: 10.11686/cyxb2022020
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Yong ZHANG1(), Hai-di WANG1, Yu-hong GAO1(), Bing WU2, Bin YAN1, Yi-fan WANG1, Zheng-jun CUI1, Ze-dong WEN1
Received:
2022-01-11
Revised:
2022-03-17
Online:
2023-01-20
Published:
2022-11-07
Contact:
Yu-hong GAO
Yong ZHANG, Hai-di WANG, Yu-hong GAO, Bing WU, Bin YAN, Yi-fan WANG, Zheng-jun CUI, Ze-dong WEN. Effect of multivariate flax rotation mode on soil aggregation characteristics and nitrogen content[J]. Acta Prataculturae Sinica, 2023, 32(1): 75-88.
胡麻频率Frequency of flax | 代码Code | 轮作茬口Crop rotation stubble | 2013-2021 |
---|---|---|---|
100%胡麻Flax | Cont F | 胡麻→胡麻→胡麻→胡麻Flax→Flax→Flax→Flax | 2013-2016,2017-2020,2021胡麻Flax |
50%胡麻Flax (Ⅰ) | WFPF | 小麦→胡麻→马铃薯→胡麻Wheat→Flax→Potato→Flax | 2013-2016,2017-2020,2021小麦Wheat |
FPFW | 胡麻→马铃薯→胡麻→小麦Flax→Potato→Flax→Wheat | 2013-2016,2017-2020,2021胡麻Flax | |
PFWF | 马铃薯→胡麻→小麦→胡麻Potato→Flax→Wheat→Flax | 2013-2016,2017-2020,2021马铃薯Potato | |
FWFP | 胡麻→小麦→胡麻→马铃薯Flax→Wheat→Flax→Potato | 2013-2016,2017-2020,2021胡麻Flax | |
50%胡麻Flax (Ⅱ) | FWPF | 胡麻→小麦→马铃薯→胡麻Flax→Wheat→Potato→Flax | 2013-2016,2017-2020,2021胡麻Flax |
WPFF | 小麦→马铃薯→胡麻→胡麻Wheat→Potato→Flax→Flax | 2013-2016,2017-2020,2021小麦Wheat | |
PFFW | 马铃薯→胡麻→胡麻→小麦Potato→Flax→Flax→Wheat | 2013-2016,2017-2020,2021马铃薯Potato | |
FFWP | 胡麻→胡麻→小麦→马铃薯Flax→Flax→Wheat→Potato | 2013-2016,2017-2020,2021胡麻Flax | |
25%胡麻Flax | WPWF | 小麦→马铃薯→小麦→胡麻Wheat→Potato→Wheat→Flax | 2013-2016,2017-2020,2021小麦Wheat |
PWFW | 马铃薯→小麦→胡麻→小麦Potato→Wheat→Flax→Wheat | 2013-2016,2017-2020,2021马铃薯Potato | |
WFWP | 小麦→胡麻→小麦→马铃薯Wheat→Flax→Wheat→Potato | 2013-2016,2017-2020,2021小麦Wheat | |
FWPW | 胡麻→小麦→马铃薯→小麦Flax→Wheat→Potato→Wheat | 2013-2016,2017-2020,2021胡麻Flax | |
0 | CK | 休闲→休闲→休闲→休闲Relaxation→Relaxation→Relaxation→Relaxation | 2013-2016,2017-2020,2021休闲Relaxation |
Table 1 Crop planting sequence
胡麻频率Frequency of flax | 代码Code | 轮作茬口Crop rotation stubble | 2013-2021 |
---|---|---|---|
100%胡麻Flax | Cont F | 胡麻→胡麻→胡麻→胡麻Flax→Flax→Flax→Flax | 2013-2016,2017-2020,2021胡麻Flax |
50%胡麻Flax (Ⅰ) | WFPF | 小麦→胡麻→马铃薯→胡麻Wheat→Flax→Potato→Flax | 2013-2016,2017-2020,2021小麦Wheat |
FPFW | 胡麻→马铃薯→胡麻→小麦Flax→Potato→Flax→Wheat | 2013-2016,2017-2020,2021胡麻Flax | |
PFWF | 马铃薯→胡麻→小麦→胡麻Potato→Flax→Wheat→Flax | 2013-2016,2017-2020,2021马铃薯Potato | |
FWFP | 胡麻→小麦→胡麻→马铃薯Flax→Wheat→Flax→Potato | 2013-2016,2017-2020,2021胡麻Flax | |
50%胡麻Flax (Ⅱ) | FWPF | 胡麻→小麦→马铃薯→胡麻Flax→Wheat→Potato→Flax | 2013-2016,2017-2020,2021胡麻Flax |
WPFF | 小麦→马铃薯→胡麻→胡麻Wheat→Potato→Flax→Flax | 2013-2016,2017-2020,2021小麦Wheat | |
PFFW | 马铃薯→胡麻→胡麻→小麦Potato→Flax→Flax→Wheat | 2013-2016,2017-2020,2021马铃薯Potato | |
FFWP | 胡麻→胡麻→小麦→马铃薯Flax→Flax→Wheat→Potato | 2013-2016,2017-2020,2021胡麻Flax | |
25%胡麻Flax | WPWF | 小麦→马铃薯→小麦→胡麻Wheat→Potato→Wheat→Flax | 2013-2016,2017-2020,2021小麦Wheat |
PWFW | 马铃薯→小麦→胡麻→小麦Potato→Wheat→Flax→Wheat | 2013-2016,2017-2020,2021马铃薯Potato | |
WFWP | 小麦→胡麻→小麦→马铃薯Wheat→Flax→Wheat→Potato | 2013-2016,2017-2020,2021小麦Wheat | |
FWPW | 胡麻→小麦→马铃薯→小麦Flax→Wheat→Potato→Wheat | 2013-2016,2017-2020,2021胡麻Flax | |
0 | CK | 休闲→休闲→休闲→休闲Relaxation→Relaxation→Relaxation→Relaxation | 2013-2016,2017-2020,2021休闲Relaxation |
轮作模式 Rotation mode | 粒径Particle size (mm) | ||||
---|---|---|---|---|---|
0.053~0.250 | 0.25~0.50 | 0.5~1.0 | 1~2 | >2 | |
Cont F | 54.59±0.79def | 4.19±0.26cd | 3.19±0.43b | 0.54±0.11bcd | 0.46±0.07b |
FWPF | 51.56±0.41gh | 3.73±0.09cde | 6.21±0.21a | 0.82±0.09a | 0.65±0.04b |
WFPF | 49.76±0.93hi | 6.16±0.81a | 5.30±0.16a | 1.11±0.12abc | 0.65±0.17b |
WPWF | 54.01±0.87ef | 5.72±0.28ab | 2.54±0.78bc | 0.54±0.19cde | 0.18±0.01b |
WPFF | 57.55±1.18abc | 2.86±0.48efg | 1.49±0.33cd | 0.48±0.21de | 0.60±0.20b |
FPFW | 59.11±0.26ab | 1.88±0.07g | 1.29±0.09cd | 0.39±0.05e | 0.30±0.05b |
PWFW | 56.09±0.82cde | 4.77±0.44bc | 1.35±0.22cd | 0.43±0.21de | 0.34±0.17b |
PFFW | 57.98±1.26abc | 2.41±0.57fg | 1.82±0.82bcd | 0.57±0.12de | 0.20±0.08b |
PFWF | 59.67±0.83a | 1.74±0.71g | 0.75±0.13d | 0.27±0.17e | 0.55±0.17b |
WFWP | 49.52±1.52hi | 3.48±0.39def | 5.83±1.16a | 2.88±0.64ab | 1.26±0.11a |
FFWP | 53.38±0.25fg | 4.07±0.26cd | 3.26±0.55b | 0.97±0.22bcd | 1.30±0.37b |
FWFP | 47.99±0.98i | 5.54±0.81ab | 6.22±1.40a | 2.86±1.09a | 0.37±0.19a |
FWPW | 56.53±1.70cd | 2.70±0.82efg | 2.23±0.74bcd | 0.55±0.15de | 0.97±0.34b |
CK | 57.29±0.70bc | 2.42±0.50fg | 2.36±0.13bc | 0.53±0.09de | 1.02±0.14b |
Table 2 Water-stable aggregates content distribution (g)
轮作模式 Rotation mode | 粒径Particle size (mm) | ||||
---|---|---|---|---|---|
0.053~0.250 | 0.25~0.50 | 0.5~1.0 | 1~2 | >2 | |
Cont F | 54.59±0.79def | 4.19±0.26cd | 3.19±0.43b | 0.54±0.11bcd | 0.46±0.07b |
FWPF | 51.56±0.41gh | 3.73±0.09cde | 6.21±0.21a | 0.82±0.09a | 0.65±0.04b |
WFPF | 49.76±0.93hi | 6.16±0.81a | 5.30±0.16a | 1.11±0.12abc | 0.65±0.17b |
WPWF | 54.01±0.87ef | 5.72±0.28ab | 2.54±0.78bc | 0.54±0.19cde | 0.18±0.01b |
WPFF | 57.55±1.18abc | 2.86±0.48efg | 1.49±0.33cd | 0.48±0.21de | 0.60±0.20b |
FPFW | 59.11±0.26ab | 1.88±0.07g | 1.29±0.09cd | 0.39±0.05e | 0.30±0.05b |
PWFW | 56.09±0.82cde | 4.77±0.44bc | 1.35±0.22cd | 0.43±0.21de | 0.34±0.17b |
PFFW | 57.98±1.26abc | 2.41±0.57fg | 1.82±0.82bcd | 0.57±0.12de | 0.20±0.08b |
PFWF | 59.67±0.83a | 1.74±0.71g | 0.75±0.13d | 0.27±0.17e | 0.55±0.17b |
WFWP | 49.52±1.52hi | 3.48±0.39def | 5.83±1.16a | 2.88±0.64ab | 1.26±0.11a |
FFWP | 53.38±0.25fg | 4.07±0.26cd | 3.26±0.55b | 0.97±0.22bcd | 1.30±0.37b |
FWFP | 47.99±0.98i | 5.54±0.81ab | 6.22±1.40a | 2.86±1.09a | 0.37±0.19a |
FWPW | 56.53±1.70cd | 2.70±0.82efg | 2.23±0.74bcd | 0.55±0.15de | 0.97±0.34b |
CK | 57.29±0.70bc | 2.42±0.50fg | 2.36±0.13bc | 0.53±0.09de | 1.02±0.14b |
轮作茬口Crop stubble rotation | 0.053~0.250 mm | 0.25~0.50 mm | 0.5~1.0 mm | 1~2 mm | >2 mm |
---|---|---|---|---|---|
F | 54.52±0.09b | 4.07±0.06a | 3.25±0.04b | 0.62±0.00b | 0.52±0.05b |
W | 57.42±0.81a | 2.94±0.41b | 1.68±0.24d | 0.49±0.12b | 0.45±0.02b |
P | 50.30±0.60c | 4.36±0.25a | 5.11±0.29a | 2.23±0.50a | 0.98±0.19a |
CK | 57.29±0.69a | 2.42±0.50b | 2.36±0.13c | 0.53±0.09b | 1.01±0.14a |
Table 3 Effect of different stubble on aggregate size distribution (g)
轮作茬口Crop stubble rotation | 0.053~0.250 mm | 0.25~0.50 mm | 0.5~1.0 mm | 1~2 mm | >2 mm |
---|---|---|---|---|---|
F | 54.52±0.09b | 4.07±0.06a | 3.25±0.04b | 0.62±0.00b | 0.52±0.05b |
W | 57.42±0.81a | 2.94±0.41b | 1.68±0.24d | 0.49±0.12b | 0.45±0.02b |
P | 50.30±0.60c | 4.36±0.25a | 5.11±0.29a | 2.23±0.50a | 0.98±0.19a |
CK | 57.29±0.69a | 2.42±0.50b | 2.36±0.13c | 0.53±0.09b | 1.01±0.14a |
胡麻频率Frequency flax | 0.053~0.250 mm | 0.25~0.50 mm | 0.5~1.0 mm | 1~2 mm | >2 mm |
---|---|---|---|---|---|
100%胡麻Flax | 54.59±0.79b | 4.19±0.26a | 3.19±0.43ab | 0.54±0.10b | 0.46±0.07c |
50%胡麻Flax (Ⅰ) | 54.13±0.25b | 3.83±0.17ab | 3.39±0.27a | 1.15±0.31a | 0.47±0.03c |
50%胡麻Flax (Ⅱ) | 55.12±0.24b | 3.26±0.10b | 3.20±0.28ab | 0.71±0.08ab | 0.69±0.02b |
25%胡麻Flax | 54.03±1.00b | 4.16±0.29a | 2.99±0.53ab | 1.10±0.27a | 0.69±0.06b |
CK | 57.29±0.69a | 2.42±0.50c | 2.36±0.13b | 0.53±0.09b | 1.01±0.13a |
Table 4 Effects of different planting frequencies of flax on aggregate size distribution (g)
胡麻频率Frequency flax | 0.053~0.250 mm | 0.25~0.50 mm | 0.5~1.0 mm | 1~2 mm | >2 mm |
---|---|---|---|---|---|
100%胡麻Flax | 54.59±0.79b | 4.19±0.26a | 3.19±0.43ab | 0.54±0.10b | 0.46±0.07c |
50%胡麻Flax (Ⅰ) | 54.13±0.25b | 3.83±0.17ab | 3.39±0.27a | 1.15±0.31a | 0.47±0.03c |
50%胡麻Flax (Ⅱ) | 55.12±0.24b | 3.26±0.10b | 3.20±0.28ab | 0.71±0.08ab | 0.69±0.02b |
25%胡麻Flax | 54.03±1.00b | 4.16±0.29a | 2.99±0.53ab | 1.10±0.27a | 0.69±0.06b |
CK | 57.29±0.69a | 2.42±0.50c | 2.36±0.13b | 0.53±0.09b | 1.01±0.13a |
轮作模式Rotation mode | 平均重量直径MWD | 几何平均直径GMD | 分形维数D | 团聚体破坏率PAD | 土壤可蚀性K |
---|---|---|---|---|---|
Cont F | 0.20±0.01cd | 0.84±0.00c | 2.75±0.03cde | 0.19±0.008cd | 0.84±0.000c |
FWPF | 0.24±0.01b | 0.85±0.00b | 2.65±0.01fg | 0.23±0.004b | 0.85±0.000b |
WFPF | 0.25±0.01b | 0.85±0.00b | 2.59±0.03gh | 0.24±0.009b | 0.85±0.000b |
WPWF | 0.19±0.01de | 0.84±0.00c | 2.73±0.03de | 0.19±0.008de | 0.84±0.000c |
WPFF | 0.18±0.02de | 0.84±0.00c | 2.84±0.04ab | 0.17±0.012de | 0.83±0.000c |
FPFW | 0.16±0.00e | 0.83±0.00c | 2.89±0.01a | 0.16±0.002e | 0.83±0.000c |
PWFW | 0.18±0.01de | 0.84±0.00c | 2.80±0.03bcd | 0.17±0.008de | 0.83±0.000c |
PFFW | 0.17±0.01de | 0.84±0.00c | 2.86±0.04ab | 0.17±0.012de | 0.83±0.000c |
PFWF | 0.16±0.00e | 0.83±0.00c | 2.91±0.02a | 0.16±0.008e | 0.83±0.000c |
WFWP | 0.30±0.03a | 0.86±0.00a | 2.58±0.05h | 0.29±0.015a | 0.85±0.000a |
FFWP | 0.23±0.00bc | 0.85±0.00b | 2.71±0.01ef | 0.23±0.002bc | 0.84±0.000b |
FWFP | 0.28±0.03a | 0.86±0.00a | 2.53±0.04h | 0.28±0.009a | 0.85±0.000a |
FWPW | 0.20±0.02cd | 0.84±0.00c | 2.81±0.05bc | 0.19±0.017cd | 0.84±0.000c |
CK | 0.20±0.01cd | 0.84±0.00c | 2.82±0.02bc | 0.19±0.006cd | 0.84±0.000c |
Table 5 Stability characteristics of soil aggregates under different cropping patterns
轮作模式Rotation mode | 平均重量直径MWD | 几何平均直径GMD | 分形维数D | 团聚体破坏率PAD | 土壤可蚀性K |
---|---|---|---|---|---|
Cont F | 0.20±0.01cd | 0.84±0.00c | 2.75±0.03cde | 0.19±0.008cd | 0.84±0.000c |
FWPF | 0.24±0.01b | 0.85±0.00b | 2.65±0.01fg | 0.23±0.004b | 0.85±0.000b |
WFPF | 0.25±0.01b | 0.85±0.00b | 2.59±0.03gh | 0.24±0.009b | 0.85±0.000b |
WPWF | 0.19±0.01de | 0.84±0.00c | 2.73±0.03de | 0.19±0.008de | 0.84±0.000c |
WPFF | 0.18±0.02de | 0.84±0.00c | 2.84±0.04ab | 0.17±0.012de | 0.83±0.000c |
FPFW | 0.16±0.00e | 0.83±0.00c | 2.89±0.01a | 0.16±0.002e | 0.83±0.000c |
PWFW | 0.18±0.01de | 0.84±0.00c | 2.80±0.03bcd | 0.17±0.008de | 0.83±0.000c |
PFFW | 0.17±0.01de | 0.84±0.00c | 2.86±0.04ab | 0.17±0.012de | 0.83±0.000c |
PFWF | 0.16±0.00e | 0.83±0.00c | 2.91±0.02a | 0.16±0.008e | 0.83±0.000c |
WFWP | 0.30±0.03a | 0.86±0.00a | 2.58±0.05h | 0.29±0.015a | 0.85±0.000a |
FFWP | 0.23±0.00bc | 0.85±0.00b | 2.71±0.01ef | 0.23±0.002bc | 0.84±0.000b |
FWFP | 0.28±0.03a | 0.86±0.00a | 2.53±0.04h | 0.28±0.009a | 0.85±0.000a |
FWPW | 0.20±0.02cd | 0.84±0.00c | 2.81±0.05bc | 0.19±0.017cd | 0.84±0.000c |
CK | 0.20±0.01cd | 0.84±0.00c | 2.82±0.02bc | 0.19±0.006cd | 0.84±0.000c |
轮作模式Rotation mode | 铵态氮 Ammonium nitrogen (mg·kg-1) | 硝态氮 Nitrate nitrogen (mg·kg-1) | 全氮 Total nitrogen (g·kg-1) | ||||||
---|---|---|---|---|---|---|---|---|---|
<0.25 mm | 0.5~1.0 mm | >2 mm | <0.25 mm | 0.5~1.0 mm | >2 mm | <0.25 mm | 0.5~1.0 mm | >2 mm | |
Cont F | 6.29±0.18bcd | 5.78±0.36ab | 1.95±0.20a | 3.02±0.31bcde | 4.80±0.30f | 3.18±0.24cd | 0.90±0.02bc | 0.84±0.00d | 0.57±0.03de |
FWPF | 7.63±0.77a | 6.04±0.25ab | 2.20±0.26a | 3.94±0.44abc | 5.27±0.56def | 3.82±0.23bc | 0.82±0.00fgh | 0.80±0.02d | 0.70±0.05cd |
WFPF | 5.77±0.57bcd | 5.35±0.55b | 1.98±0.46a | 3.53±0.35abcde | 3.09±0.17g | 2.46±0.55d | 0.91±0.05cde | 0.99±0.02a | 0.52±0.01g |
WPWF | 6.78±0.18ab | 5.70±0.30b | 2.20±0.26a | 3.34±0.36abcde | 6.21±0.94bcd | 2.61±0.18d | 1.06±0.00b | 0.90±0.00bc | 0.77±0.00b |
WPFF | 2.43±0.46e | 5.81±0.29ab | 1.78±0.10a | 3.18±0.70abcde | 5.35±0.50cdef | 2.42±0.60d | 0.76±0.05h | 0.73±0.06e | 0.95±0.05a |
FPFW | 6.60±0.53abc | 5.81±0.41ab | 1.99±0.46a | 3.75±0.63abcde | 5.61±0.45cdef | 3.12±0.39cd | 0.89±0.07efg | 0.85±0.01cd | 0.95±0.00a |
PWFW | 4.86±1.14d | 5.91±0.65ab | 1.97±0.30a | 4.01±0.64ab | 5.31±0.22def | 3.27±0.37cd | 0.99±0.02bcd | 0.71±0.05e | 0.75±0.00bc |
PFFW | 5.16±0.12cd | 6.12±0.63ab | 1.92±0.24a | 3.80±0.46abcd | 5.48±0.65cdef | 2.71±0.38d | 1.00±0.00bc | 0.80±0.00d | 0.80±0.00b |
PFWF | 5.73±0.27bcd | 5.20±0.83b | 1.87±0.24a | 2.55±0.39e | 4.97±0.61ef | 2.59±0.59d | 1.22±0.09a | 0.84±0.00cd | 0.52±0.02g |
WFWP | 6.15±0.35bcd | 6.97±0.95a | 1.95±0.13a | 4.38±0.63a | 8.23±0.45a | 4.03±0.45bc | 0.58±0.04i | 0.94±0.02ab | 0.77±0.05b |
FFWP | 7.14±0.92ab | 5.87±0.30ab | 1.96±0.28a | 4.09±0.84ab | 6.01±0.38bcde | 5.12±0.08a | 1.02±0.00b | 0.85±0.00cd | 0.73±0.00bcd |
FWFP | 7.65±0.29a | 6.33±0.36ab | 2.07±0.09a | 3.32±0.43abcde | 7.01±0.06b | 4.53±0.53ab | 0.90±0.03def | 0.56±0.08f | 0.62±0.05ef |
FWPW | 6.41±1.17abc | 5.76±0.30ab | 2.40±0.40a | 2.76±0.31cde | 7.14±0.79b | 2.42±0.36d | 0.59±0.00i | 0.53±0.00f | 0.59±0.04f |
CK | 6.40±0.32abc | 5.70±0.09b | 2.42±0.09a | 1.81±1.28de | 6.51±0.10bc | 2.43±0.09d | 0.81±0.04gh | 0.50±0.00f | 0.47±0.02g |
Table 6 Effect of different rotation patterns on the distribution characteristics of nitrogen content in soil aggregates
轮作模式Rotation mode | 铵态氮 Ammonium nitrogen (mg·kg-1) | 硝态氮 Nitrate nitrogen (mg·kg-1) | 全氮 Total nitrogen (g·kg-1) | ||||||
---|---|---|---|---|---|---|---|---|---|
<0.25 mm | 0.5~1.0 mm | >2 mm | <0.25 mm | 0.5~1.0 mm | >2 mm | <0.25 mm | 0.5~1.0 mm | >2 mm | |
Cont F | 6.29±0.18bcd | 5.78±0.36ab | 1.95±0.20a | 3.02±0.31bcde | 4.80±0.30f | 3.18±0.24cd | 0.90±0.02bc | 0.84±0.00d | 0.57±0.03de |
FWPF | 7.63±0.77a | 6.04±0.25ab | 2.20±0.26a | 3.94±0.44abc | 5.27±0.56def | 3.82±0.23bc | 0.82±0.00fgh | 0.80±0.02d | 0.70±0.05cd |
WFPF | 5.77±0.57bcd | 5.35±0.55b | 1.98±0.46a | 3.53±0.35abcde | 3.09±0.17g | 2.46±0.55d | 0.91±0.05cde | 0.99±0.02a | 0.52±0.01g |
WPWF | 6.78±0.18ab | 5.70±0.30b | 2.20±0.26a | 3.34±0.36abcde | 6.21±0.94bcd | 2.61±0.18d | 1.06±0.00b | 0.90±0.00bc | 0.77±0.00b |
WPFF | 2.43±0.46e | 5.81±0.29ab | 1.78±0.10a | 3.18±0.70abcde | 5.35±0.50cdef | 2.42±0.60d | 0.76±0.05h | 0.73±0.06e | 0.95±0.05a |
FPFW | 6.60±0.53abc | 5.81±0.41ab | 1.99±0.46a | 3.75±0.63abcde | 5.61±0.45cdef | 3.12±0.39cd | 0.89±0.07efg | 0.85±0.01cd | 0.95±0.00a |
PWFW | 4.86±1.14d | 5.91±0.65ab | 1.97±0.30a | 4.01±0.64ab | 5.31±0.22def | 3.27±0.37cd | 0.99±0.02bcd | 0.71±0.05e | 0.75±0.00bc |
PFFW | 5.16±0.12cd | 6.12±0.63ab | 1.92±0.24a | 3.80±0.46abcd | 5.48±0.65cdef | 2.71±0.38d | 1.00±0.00bc | 0.80±0.00d | 0.80±0.00b |
PFWF | 5.73±0.27bcd | 5.20±0.83b | 1.87±0.24a | 2.55±0.39e | 4.97±0.61ef | 2.59±0.59d | 1.22±0.09a | 0.84±0.00cd | 0.52±0.02g |
WFWP | 6.15±0.35bcd | 6.97±0.95a | 1.95±0.13a | 4.38±0.63a | 8.23±0.45a | 4.03±0.45bc | 0.58±0.04i | 0.94±0.02ab | 0.77±0.05b |
FFWP | 7.14±0.92ab | 5.87±0.30ab | 1.96±0.28a | 4.09±0.84ab | 6.01±0.38bcde | 5.12±0.08a | 1.02±0.00b | 0.85±0.00cd | 0.73±0.00bcd |
FWFP | 7.65±0.29a | 6.33±0.36ab | 2.07±0.09a | 3.32±0.43abcde | 7.01±0.06b | 4.53±0.53ab | 0.90±0.03def | 0.56±0.08f | 0.62±0.05ef |
FWPW | 6.41±1.17abc | 5.76±0.30ab | 2.40±0.40a | 2.76±0.31cde | 7.14±0.79b | 2.42±0.36d | 0.59±0.00i | 0.53±0.00f | 0.59±0.04f |
CK | 6.40±0.32abc | 5.70±0.09b | 2.42±0.09a | 1.81±1.28de | 6.51±0.10bc | 2.43±0.09d | 0.81±0.04gh | 0.50±0.00f | 0.47±0.02g |
项目 Item | 几何平均 直径GMD | 分形维数 D | 团聚体破坏率PAD | 土壤可蚀性K | NH4+-N | NO3--N | TN | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
<0.25 mm | 0.5~1.0 mm | >2 mm | <0.25 mm | 0.5~1.0 mm | >2 mm | <0.25 mm | 0.5~1.0 mm | >2 mm | |||||
平均重量直径MWD | 0.98** | -0.95** | -0.94** | -0.47 | 0.45 | 0.63* | 0.10 | 0.41 | 0.38 | 0.63* | -0.44 | 0.09 | -0.23 |
几何平均直径GMD | -0.99** | -0.99** | -0.52 | 0.47 | 0.57* | 0.10 | 0.42 | 0.27 | 0.61* | -0.35 | 0.12 | -0.23 | |
分形维数D | 0.99** | 0.53 | -0.46 | -0.50 | -0.09 | -0.40 | -0.17 | -0.56* | 0.27 | -0.17 | 0.23 | ||
团聚体破坏率PAD | 0.57 | -0.45 | -0.52 | -0.09 | -0.43 | -0.19 | -0.58* | 0.31 | -0.17 | 0.18 | |||
土壤可蚀性K | -0.47 | -0.56* | -0.11 | -0.41 | -0.27 | -0.60* | 0.36 | -0.13 | 0.24 | ||||
NH4+-N | |||||||||||||
<0.25 mm | 0.16 | 0.54* | 0.12 | 0.28 | 0.52 | 0.06 | -0.05 | -0.39 | |||||
0.5~1.0 mm | -0.05 | 0.64* | 0.71** | 0.56* | -0.55* | -0.02 | 0.36 | ||||||
>2 mm | -0.32 | 0.37 | -0.16 | -0.36 | -0.58* | -0.49 | |||||||
NO3--N | |||||||||||||
<0.25 mm | 0.13 | 0.60* | -0.16 | 0.49 | 0.51 | ||||||||
0.5~1.0 mm | 0.35 | -0.54* | -0.40 | 0.10 | |||||||||
>2 mm | 0.00 | 0.09 | 0.13 | ||||||||||
TN | |||||||||||||
<0.25 mm | 0.30 | -0.12 | |||||||||||
0.5~1.0 mm | 0.29 |
Table 7 Correlation analysis of nitrogen distribution in soil aggregate particle size and stability index under different cropping rotation modes
项目 Item | 几何平均 直径GMD | 分形维数 D | 团聚体破坏率PAD | 土壤可蚀性K | NH4+-N | NO3--N | TN | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
<0.25 mm | 0.5~1.0 mm | >2 mm | <0.25 mm | 0.5~1.0 mm | >2 mm | <0.25 mm | 0.5~1.0 mm | >2 mm | |||||
平均重量直径MWD | 0.98** | -0.95** | -0.94** | -0.47 | 0.45 | 0.63* | 0.10 | 0.41 | 0.38 | 0.63* | -0.44 | 0.09 | -0.23 |
几何平均直径GMD | -0.99** | -0.99** | -0.52 | 0.47 | 0.57* | 0.10 | 0.42 | 0.27 | 0.61* | -0.35 | 0.12 | -0.23 | |
分形维数D | 0.99** | 0.53 | -0.46 | -0.50 | -0.09 | -0.40 | -0.17 | -0.56* | 0.27 | -0.17 | 0.23 | ||
团聚体破坏率PAD | 0.57 | -0.45 | -0.52 | -0.09 | -0.43 | -0.19 | -0.58* | 0.31 | -0.17 | 0.18 | |||
土壤可蚀性K | -0.47 | -0.56* | -0.11 | -0.41 | -0.27 | -0.60* | 0.36 | -0.13 | 0.24 | ||||
NH4+-N | |||||||||||||
<0.25 mm | 0.16 | 0.54* | 0.12 | 0.28 | 0.52 | 0.06 | -0.05 | -0.39 | |||||
0.5~1.0 mm | -0.05 | 0.64* | 0.71** | 0.56* | -0.55* | -0.02 | 0.36 | ||||||
>2 mm | -0.32 | 0.37 | -0.16 | -0.36 | -0.58* | -0.49 | |||||||
NO3--N | |||||||||||||
<0.25 mm | 0.13 | 0.60* | -0.16 | 0.49 | 0.51 | ||||||||
0.5~1.0 mm | 0.35 | -0.54* | -0.40 | 0.10 | |||||||||
>2 mm | 0.00 | 0.09 | 0.13 | ||||||||||
TN | |||||||||||||
<0.25 mm | 0.30 | -0.12 | |||||||||||
0.5~1.0 mm | 0.29 |
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