| 论文编号: | |
| 论文题目: | No-tillage with continuous maize cropping enhances soil aggregation and organic carbon storage in Northeast China |
| 英文论文题目: | No-tillage with continuous maize cropping enhances soil aggregation and organic carbon storage in Northeast China |
| 第一作者: | 张延 |
| 英文第一作者: | Zhang,Yan |
| 联系作者: | 梁爱珍 |
| 英文联系作者: | Liang,Aizhen |
| 外单位作者单位: | |
| 英文外单位作者单位: | |
| 发表年度: | 2018 |
| 卷: | 330 |
| 期: | |
| 页码: | 204-211 |
| 摘要: | In Northeast China, conventional tillage practices involve removal of crop residue after harvest and prior to moldboard plowing; this has been shown to cause a decline of soil organic carbon (SOC) and degradation of soil structure. No-tillage has been suggested to be an effective way to increase SOC storage but its effectiveness in some soils and climates has been questioned. Different cropping systems also influence SOC storage. Hence, we established an experiment to evaluate how a combination of different tillage and cropping systems could improve soil aggregation and organic carbon storage. We included five treatments: a) NTMS: no tillage with maize (Zea mays L)-soybean (Glycine max Merr.) (MS) rotation; b) MPMS: moldboard plowing with maize-soybean rotation; c) NTMM: no tillage with continuous maize (MM); d) MPMM: moldboard plowing with continuous maize; e) CTMM: conventional tillage with continuous maize (the conventional farming practice in Northeast China). All crop residues were returned to the soil except in the CTMM treatment. Returning residue to the soil significantly increased SOC storage in all tillage/cropping systems with NTMM having the highest increase in rate of SOC storage at 0.80 Mg C ha(-1) yr(-1) relative to the start of the experiment. The CTMM depleted SOC storage at rate of 0.52 Mg C ha(-1) yr(-1) relative to the start of the experiment. Soil under NTMS exhibited a significant SOC decline deep in the soil (5-30 cm) but overall SOC storage in 0-30 cm profile was equal to that under MPMS. The NTMM had the highest SOC storage and the highest proportion and associated organic carbon (OC) in occluded micro-aggregates (53-250 mu m, inside of 250 mu m aggregates) across all experimental treatments. The OC in occluded micro-aggregates was much higher than that associated with unprotected micro-aggregates (53-250 mu m, outside of 250 mu m aggregates). The effects of tillage on aggregate size and OC concentration occurred mainly in the surface layer (0-5 cm) whereas the effect of cropping system on aggregate size and OC concentration occurred at deeper depths. The MS cropping system increased the proportion of silt-clay (< 53 mu m, outside of 250 mu m aggregates) over MM while occluded silt-clay (< 53 mu m, inside of 250 mu m aggregates) in MM was greater than in MS in all layers. The NTMM treatments improved SOC storage and aggregation over the other treatments. |
| 英文摘要: | In Northeast China, conventional tillage practices involve removal of crop residue after harvest and prior to moldboard plowing; this has been shown to cause a decline of soil organic carbon (SOC) and degradation of soil structure. No-tillage has been suggested to be an effective way to increase SOC storage but its effectiveness in some soils and climates has been questioned. Different cropping systems also influence SOC storage. Hence, we established an experiment to evaluate how a combination of different tillage and cropping systems could improve soil aggregation and organic carbon storage. We included five treatments: a) NTMS: no tillage with maize (Zea mays L)-soybean (Glycine max Merr.) (MS) rotation; b) MPMS: moldboard plowing with maize-soybean rotation; c) NTMM: no tillage with continuous maize (MM); d) MPMM: moldboard plowing with continuous maize; e) CTMM: conventional tillage with continuous maize (the conventional farming practice in Northeast China). All crop residues were returned to the soil except in the CTMM treatment. Returning residue to the soil significantly increased SOC storage in all tillage/cropping systems with NTMM having the highest increase in rate of SOC storage at 0.80 Mg C ha(-1) yr(-1) relative to the start of the experiment. The CTMM depleted SOC storage at rate of 0.52 Mg C ha(-1) yr(-1) relative to the start of the experiment. Soil under NTMS exhibited a significant SOC decline deep in the soil (5-30 cm) but overall SOC storage in 0-30 cm profile was equal to that under MPMS. The NTMM had the highest SOC storage and the highest proportion and associated organic carbon (OC) in occluded micro-aggregates (53-250 mu m, inside of 250 mu m aggregates) across all experimental treatments. The OC in occluded micro-aggregates was much higher than that associated with unprotected micro-aggregates (53-250 mu m, outside of 250 mu m aggregates). The effects of tillage on aggregate size and OC concentration occurred mainly in the surface layer (0-5 cm) whereas the effect of cropping system on aggregate size and OC concentration occurred at deeper depths. The MS cropping system increased the proportion of silt-clay (< 53 mu m, outside of 250 mu m aggregates) over MM while occluded silt-clay (< 53 mu m, inside of 250 mu m aggregates) in MM was greater than in MS in all layers. The NTMM treatments improved SOC storage and aggregation over the other treatments. |
| 刊物名称: | Geoderma |
| 英文刊物名称: | Geoderma |
| 论文全文: | |
| 英文论文全文: | |
| 全文链接: | |
| 其它备注: | |
| 英文其它备注: | |
| 学科: | |
| 英文学科: | |
| 影响因子: | |
| 第一作者所在部门: | |
| 英文第一作者所在部门: | |
| 论文出处: | |
| 英文论文出处: | |
| 论文类别: | |
| 英文论文类别: | |
| 参与作者: | X. J. Li, E. G. Gregorich, N. B. McLaughlin, X. P. Zhang, Y. F. Guo, A. Z. Liang, R. Q. Fan and B. J. Sun |
| 英文参与作者: | X. J. Li, E. G. Gregorich, N. B. McLaughlin, X. P. Zhang, Y. F. Guo, A. Z. Liang, R. Q. Fan and B. J. Sun |
删除或更新信息，请邮件至freekaoyan#163.com(#换成@)
No-tillage with continuous maize cropping enhances soil aggregation and organic carbon storage in No
本站小编 Free考研考试/2020-03-20
相关话题/tillage continuous maize
领限时大额优惠券,享本站正版考研考试资料!
优惠券领取后72小时内有效，10万种最新考研考试考证类电子打印资料任你选。涵盖全国500余所院校考研专业课、200多种职业资格考试、1100多种经典教材，产品类型包含电子书、题库、全套资料以及视频，无论您是考研复习、考证刷题，还是考前冲刺等，不同类型的产品可满足您学习上的不同需求。 ...考试优惠券 本站小编 Free壹佰分学习网 2022-09-19Grass and maize vegetation systems restore saline-sodic soils in the Songnen Plain of northeast Chin
论文编号:论文题目:Grassandmaizevegetationsystemsrestoresaline-sodicsoilsintheSongnenPlainofnortheastChina英文论文题目:Grassandmaizevegetationsystemsrestoresaline-so ...东北地理与农业生态研究所 本站小编 Free考研考试 2020-03-20Assessment of Micro-Basin Tillage as a Soil and Water Conservation Practice in the Black Soil Region
论文编号:论文题目:AssessmentofMicro-BasinTillageasaSoilandWaterConservationPracticeintheBlackSoilRegionofNortheastChina英文论文题目:AssessmentofMicro-BasinTillageas ...东北地理与农业生态研究所 本站小编 Free考研考试 2020-03-20No tillage combined with crop rotation improves soil microbial community composition and metabolic a
论文编号:论文题目:Notillagecombinedwithcroprotationimprovessoilmicrobialcommunitycompositionandmetabolicactivity英文论文题目:Notillagecombinedwithcroprotationimprov ...东北地理与农业生态研究所 本站小编 Free考研考试 2020-03-20
