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[1]范倩玉 刘振华 李 晋 班旦赤列 杨珍平** 薛建福 黄春国 高志强.不同轮作模式对潮土团聚体及其有机碳分布的影响[J].应用与环境生物学报,2021,27(04):1-12.[doi:10.19675/j.cnki.1006-687x.2020.07059]
 FAN Qianyu,LIU Zhenhua,LI Jin,et al.Effects of different crop rotation patterns on soil aggregates and organic carbon distribution in fluvo-aquic soil[J].Chinese Journal of Applied & Environmental Biology,2021,27(04):1-12.[doi:10.19675/j.cnki.1006-687x.2020.07059]
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不同轮作模式对潮土团聚体及其有机碳分布的影响()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
27卷
期数:
2021年04期
页码:
1-12
栏目:
研究论文
出版日期:
2021-08-25

文章信息/Info

Title:
Effects of different crop rotation patterns on soil aggregates and organic carbon distribution in fluvo-aquic soil
作者:
范倩玉1 刘振华2 李 晋2 班旦赤列2 杨珍平2** 薛建福2 黄春国2 高志强2
1山西农业大学资源与环境学院 山西 太谷 030801
2山西农业大学农学院 山西 太谷 030801
Author(s):
FAN Qianyu1 LIU Zhenhua2 LI Jin2 Bandanchilie2 YANG Zhenping2** XUE Jianfu2 HUANG Chunguo2& GAO Zhiqiang2
1 College of Resources and Environment, Shanxi Agricultural University, Taigu, Shanxi 030801
2 College of Agriculture, Shanxi Agricultural University, Taigu, Shanxi 030801
关键词:
轮作模式土壤团聚体有机碳有机碳储量有机碳贡献率
Keywords:
rotation mode soil aggregate organic carbon organic carbon storage contribution rate of organic carbon
DOI:
10.19675/j.cnki.1006-687x.2020.07059
摘要:
为揭示不同轮作模式下潮土土壤团聚体及其有机碳含量变化规律,于2018-2019年在山西大同进行了田间试验。设置处理为:油菜-荞麦(RB)、玉米-荞麦(CB)、马铃薯-荞麦(PB)和燕麦-荞麦(OB)4种轮作模式,荞麦-荞麦(BB)连作和休闲-休闲(FF)为对照,测量指标为:土壤团聚体组成、稳定性和团聚体内有机碳分布。结果显示:与连作模式(荞麦-荞麦)相比,各轮作模式均提高了土壤大团聚体数量和稳定性;油菜-荞麦(RB)轮作模式0-60 cm土层的大团聚体含量均增加,其0-20 cm土层的平均重量直径(MWD)、几何平均直径(GMD)增幅为5%和7%,20-40 cm土层的团聚体R0.25、MWD、GMD值增幅为8%、26%和37%。各轮作模式土壤有机碳主要富集在土壤表层,且> 3 mm粒级土壤团聚体中有机碳含量对整个土壤有机碳含量和土壤有机碳库的贡献率最高。同时,各轮作模式0-20 cm土层各个粒级团聚体的有机碳含量均显著增加,油菜-荞麦(RB)轮作模式20-40 cm土层各个粒级团聚体的有机碳含量显著增加,随粒径级数递减其增幅分别为41%、49%、72%和39%,其> 3 mm粒级团聚体的有机碳储量及贡献率也最高。总之,轮作有利于增加土壤团聚体的有机碳含量,可改善土壤团聚体组成及稳定性,增加土壤的固碳能力,但不同轮作模式间有差异。因此,本研究表明油菜-荞麦轮作更有利于土壤固碳,可以在研究区域作为重要轮作模式进行推广和应用。(图2 表5 参41)
Abstract:
In order to reveal the change rule of soil aggregates and organic carbon content in fluvo-aquic soil under different rotation cropping, a field trial was conducted in Datong, Shanxi Province among 2018-2019. In the experiment, four treatments were implemented as the rape-buckwheat (RB), corn-buckwheat (CB), potato-buckwheat (PB), and oat-buckwheat (OB). The buckwheat-buckwheat (BB) and fallow-fallow (FF) as control. The soil aggregate composition, stability, and organic carbon distribution were studied. The results showed that differ crop rotation increased the number and stability of soil macro aggregates compared to continuous cropping. Under the rape-buckwheat (RB) treatment, the macro aggregates contents increased among the 0-60 cm soil depth, and the average weight diameter (MWD) and geometric average diameter (GMD) of 0-20 cm soil depth were significantly increased by 5% and 7%, and the soil aggregates R0.25, MWD and GMD of the 20-40 cm soil depth were significant increased by 8%, 26% and 37%. Soil organic carbon enriched in the soil surface under different crop rotation, and highly contributed to the total soil organic and pools in the > 3 mm aggregates of soil. Meanwhile, the organic carbon of each level of soil aggregates of 0-20 cm soil depth under differ crop rotation, and of 20-40 cm soil depth under rape-buckwheat (RB) treatment were significant increased. With the decreases of particle sizes of soil aggregates under rape-buckwheat (RB) treatment, the soil organic carbon increased by 41%, 49%, 72% and 39%, and of the > 3 mm aggregates of soil was contributed to the total organic carbon content and pools. In general, crop rotation can increase the organic carbon content of soil aggregates, improve the composition and stability of soil aggregates, and increase the carbon fixation capacity of soil, yet the differences existed under different rotation patterns. Therefore, we have concluded that rape-buckwheat rotation is more conducive to soil carbon sequestration, and can be used as an ideal rotation model in the study area.

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备注/Memo

备注/Memo:
收稿日期 Received: 2020-07-07 接受日期 Accepted: 2020-10-22
国家公益性行业农业科研专项(201503120)、山西农谷建设科研专项项目(SXNGJSKYZX201701)、山西省“1331工程”作物生态与旱作栽培生理重点实验室建设计划(201705D111007, [2017]14)、山西省“1331 工程” 有机旱作与栽培生理创新团队建设计划(晋教科[2018]4)、 山西省教育厅“黄土高原特色作物优质高效生产协同创新中心”建设计划(晋教科[2016]5)和山西省研究生教育创新项目(2020SY190)资助
**通讯作者 Corresponding author (E-mail: yangzp.2@163.com)
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更新日期/Last Update: 2020-11-06