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3 不同覆膜及施肥处理秸秆碳对土壤总有机碳和秸秆氮对土壤全氮的贡献率
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Table 3 Contribution percentage of straw carbon to total soil organic carbon and straw nitrogen to soil total nitrogen under different mulching and fertilization treatments
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栽培模式
Cultivation mode | 施肥处理
Fertilization treatment | 秸秆碳的贡献率
Contribution percentage of straw carbon to total
soil organic carbon (%) | 秸秆氮的贡献率
Contribution percentage of straw nitrogen to
total nitrogen (%) | | 30 d | 150 d | 30 d | 150 d | 不覆膜
No mulching | CK | 16.91±0.28 A* | 13.91±0.07 a | 5.27±0.06 B* | 4.70±0.08 a | | N4 | 13.90±0.13 B | 14.34±0.16 a | 3.47±0.12 D | 3.38±0.09 d | | M2N2 | 10.13±0.19 D | 9.95±0.04 d | 3.12±0.01 E | 3.03±0.04 e | 覆膜
Mulching | CK | 16.44±0.33 A* | 12.27±0.34 b | 5.53±0.09 A* | 4.43±0.01 b | | N4 | 14.43±0.29 B | 14.32±0.18 a | 4.03±0.07 C | 3.86±0.00 c | | M2N2 | 10.88±0.26 C | 10.96±0.14 c | 3.30±0.03 DE | 3.28±0.09 d |
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