添加玉米秸秆对黑土团聚体胡敏酸数量和质量的影响

被引：26

作者：

关松

郭绮雯

刘金华

窦森

机构：

[1] 吉林农业大学资源与环境学院

来源：

吉林农业大学学报 | 2017年 / 39卷 / 04期

关键词：

黑土; 团聚体; 胡敏酸; 玉米秸秆; 红外光谱;

D O I：

10.13327/j.jjlau.2017.3654

中图分类号：

S153.6 [土壤成分];

学科分类号：

090301 [土壤学];

摘要：

运用元素分析和红外光谱分析法研究了培养条件下添加玉米秸秆对黑土及其大团聚体(>2 000μm和2 000～250μm)、微团聚体(250～53μm)和粉粒+黏粒组分(<53μm)中胡敏酸(HA)数量和结构特征的影响。结果表明:添加玉米秸秆增加黑土及其各级团聚体HA数量,且2 000～250μm大团聚体中HA含量最多;大团聚体HA的氧化度和芳香-C提高;250～53μm微团聚体与<53μm粉粒+黏粒HA的氧化度和芳香-C降低;黑土及其各级团聚体HA分子缩合度下降,脂族链烃-C增加,脂族链烃-C/羧基-C和脂族链烃-C/芳香-C值均较对照增加,脂族性得到提高。不同粒级团聚体之间相比,大团聚体中HA分子结构是以高的缩合度、氧化度、脂族链烃-C、芳香-C含量为特征;<53μm粉粒+黏粒中HA分子结构是以最低的脂族链烃-C、芳香-C、羧基-C和最高的多聚糖-C为特征。添加玉米秸秆增加了土壤HA数量,降低了HA分子结构的缩合度和氧化度,脂族性提高,使土壤HA分子结构"年轻化",活性增强,对于土壤固碳、提高土壤质量具有重要作用。

引用

页码：437 / 444

页数：8

共 23 条

[1]

土壤有机质.[M].窦森; 著.科学出版社.2009,

[2]

Aggregate stability and size distribution of red soils under different land uses integrally regulated by soil organic matter; and iron and aluminum oxides.[J].Jinsong Zhao;Shan Chen;Ronggui Hu;Yayu Li.Soil & Tillage Research.2017,

[3]

Fractionation and characterization of humic acids from organic amended rice paddy soils.[J].Prabhat Pramanik;Pil Joo Kim.Science of the Total Environment.2014,

[4]

Characterization of Humic Carbon in Soil Aggregates in a Long-term Experiment with Manure and Mineral Fertilization [J].

Simonetti, Gianluca ;

Francioso, Ornella ;

Nardi, Serenella ;

Berti, Antonio ;

Brugnoli, Enrico ;

Lugato, Emanuele ;

Morari, Francesco .

SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 2012, 76 (03) :880-890

[5]

Organic matter stabilization in soil aggregates: Understanding the biogeochemical mechanisms that determine the fate of carbon inputs in soils.[J].Louis V. Verchot;Laure Dutaur;Keith D. Shepherd;Alain Albrecht.Geoderma.2011, 3

[6]

Distribution of organic and humic carbon in wet-sieved aggregates of different soils under long-term fertilization experiment.[J].E. Lugato;G. Simonetti;F. Morari;S. Nardi;A. Berti;L. Giardini.Geoderma.2010, 3

[7]

Effect of fertilization on decomposition of 14C labelled plant residues and their incorporation into soil aggregates [J].

Majumder, Bidisha ;

Kuzyakov, Yakov .

SOIL & TILLAGE RESEARCH, 2010, 109 (02) :94-102

[8]

Relationship between aggregate pore size distribution and organic–humic carbon in contrasting soils.[J].E. Lugato;F. Morari;S. Nardi;A. Berti;L. Giardini.Soil & Tillage Research.2008, 1

[9]

Organic matter in density fractions of water-stable aggregates in silty soils: Effect of land use [J].

Yamashita, Tanion ;

Flessa, Heiner ;

John, Bettina ;

Helfrich, Mirjam ;

Ludwig, Bernard .

SOIL BIOLOGY & BIOCHEMISTRY, 2006, 38 (11) :3222-3234

[10]

USE OF 13C NMR AND FTIR FOR ELUCIDATION OF DEGRADATION PATHWAYS DURING NATURAL LITTER DECOMPOSITION AND COMPOSTING I. EARLY STAGE LEAF DEGRADATION.[J].Robert L. Wershaw;Jerry A. Leenheer;Kay R. Kennedy;Ted I. Noyes.Soil Science.1996, 10

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