地膜覆盖与施肥对秸秆碳氮在土壤中固存的影响
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王淑颖,李小红,程娜,付时丰,李双异,孙良杰,安婷婷,汪景宽
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Effects of Plastic Film Mulching and Fertilization on the Sequestration of Carbon and Nitrogen from Straw in Soil
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WANG ShuYing,LI XiaoHong,CHENG Na,FU ShiFeng,LI ShuangYi,SUN LiangJie,AN TingTing,WANG JingKuan
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表2 栽培模式、施肥和时间对土壤中秸秆碳氮固定影响的方差分析
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Table 2 Analysis of variance for the effects of cultivation mode, fertilization and time on the straw carbon and nitrogen sequestration in soil
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因子
Factor | 自由度
Degree of freedom | δ13C
F(P) | SOC
F(P) | 13C-SOC
F(P) | Fmc
F(P) | Rmc
F(P) | δ15N
F(P) | TN
F(P) | 15N-TN
F(P) | Fmn
F(P) | Rmn
F(P) | SOC/TN
F(P) | 13C-SOC/15N-TN
F(P) | 施肥
Fertilization (F) | 2 | 720
(<0.001) | 655
(<0.001) | 158
(<0.001) | 690
(<0.001) | 158
(<0.001) | 1111
(<0.001) | 481.0
(<0.001) | 250.0
(<0.001) | 1120
(<0.001) | 247.9
(<0.001) | 31.7
(<0.001) | 125
(<0.001) | 时间
Time (T) | 1 | 124
(<0.001) | 2.96
(0.098) | 96.7
(<0.001) | 122
(<0.001) | 96.7
(<0.001) | 112.0
(<0.001) | 0.310
(0.583) | 83.20
(<0.001) | 111.7
(<0.001) | 83.01
(<0.001) | 0.45
(0.509) | 0.01
(0.926) | 栽培模式
Cultivation mode (C) | 1 | 0.22
(0.644) | 13.6
(0.001) | 6.65
(0.016) | 0.06
(0.812) | 6.65
(0.016) | 58.46
(<0.001) | 1.005
(0.326) | 33.77
(<0.001) | 57.72
(<0.001) | 33.55
(<0.001) | 10.8
(0.003) | 10.5
(0.003) | 施肥×时间
F×T | 2 | 126
(<0.001) | 23.1
(<0.001) | 129
(<0.001) | 135
(<0.001) | 129
(<0.001) | 60.02
(<0.001) | 15.34
(<0.001) | 54.64
(<0.001) | 60.93
(<0.001) | 54.19
(<0.001) | 9.95
(0.001) | 23.9
(<0.001) | 施肥×栽培模式
F×C | 2 | 24.5
(<0.001) | 30.8
(<0.001) | 25.4
(<0.001) | 29.7
(<0.001) | 25.4
(<0.001) | 22.81
(<0.001) | 4.051
(0.030) | 20.02
(<0.001) | 22.62
(<0.001) | 20.16
(<0.001) | 19.1
(<0.001) | 1.10
(0.348) | 栽培模式×时间
C×T | 1 | 3.51
(0.073) | 1.18
(0.289) | 1.52
(0.230) | 5.34
(0.0300) | 1.52
(0.230) | 7.162
(0.013) | 60.19
(<0.001) | 10.07
(0.004) | 7.792
(0.010) | 10.05
(0.004) | 39.1
(<0.001) | 16.6
(<0.001) | | 施肥×栽培模式×时间 F×C×T | 2 | 5.10
(0.014) | 4.50
(0.022) | 3.99
(0.032) | 3.89
(0.034) | 3.98
(0.032) | 8.208
(0.002) | 12.71
(<0.001) | 3.823
(0.036) | 8.052
(0.002) | 3.878
(0.035) | 7.68
(0.003) | 3.97
(0.032) |
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