|
|||||
|
|
| 秸秆全量还田配施沼液对砂姜黑土水稳性团聚体及结合有机碳的影响 | |
| 引用本文： | 王威,唐蛟,殷金忠,潘飞飞,樊姝言,黄文文,吴大付. 秸秆全量还田配施沼液对砂姜黑土水稳性团聚体及结合有机碳的影响[J]. 土壤, 2023, 55(1): 53-61 |
| 作者姓名： | 王威 唐蛟 殷金忠 潘飞飞 樊姝言 黄文文 吴大付 |
| 作者单位： | 河南科技学院资源与环境学院,河南科技学院资源与环境学院,河南科技学院资源与环境学院,河南科技学院园艺与园林学院,河南科技学院资源与环境学院,河南科技学院资源与环境学院,河南科技学院资源与环境学院 |
| 基金项目： | 河南省重点研发与推广专项(212102110388)，河南省博士后基金（201903042） |
| 摘 要： | 为探究秸秆还田配施沼液对土壤水稳性团聚体及结合有机碳的影响，以黄淮海平原砂姜黑土为研究对象，设置秸秆全量还田和秸秆全量还田配施不同剂量(低剂量：450 m3/hm2；中剂量：750 m3/hm2；高剂量：1 050 m3/hm2)沼液处理以及空白对照，采集并分析了不同土层(0～20 cm和20～40 cm)水稳性团聚体及结合有机碳的分布情况。结果表明：相较于对照，秸秆还田和沼液灌施均显著促进各土层水稳性大团聚体形成及稳定性提高。秸秆还田配施中量沼液处理>0.25 mm粒径团聚体质量组成比例(WR0.25)、平均重量直径(MWD)和几何平均直径(GMD)最高，而团聚体破碎率(PAD)和分形维数(D)最低。单一进行秸秆还田和秸秆还田配施不同剂量沼液均显著增加各土层大团聚体结合有机碳贡献率，降低<0.25mm粒径土壤颗粒结合有机碳的贡献率。秸秆还田配施中量沼液处理使得大粒径团聚体结合有机碳贡献率显著高于其他处理。因此，进行秸秆全量还田配施适量沼液有助... |
| 关 键 词： | 秸秆还田 沼液 土壤团聚体 结合有机碳 砂姜黑土 |
| 收稿时间： | 2022-04-28 |
| 修稿时间： | 2022-05-24 |
Aggregates and Associated Organic Carbon in Lime Concretion Black Soil in Response to Combined Full-rate Straw Incorporation and Biogas Slurry Application |
|
| WANG Wei,TANG Jiao,YIN Jinzhong,PAN Feifei,FAN Shuyan,HUANG Wenwen,WU Dafu. Aggregates and Associated Organic Carbon in Lime Concretion Black Soil in Response to Combined Full-rate Straw Incorporation and Biogas Slurry Application[J]. Soils, 2023, 55(1): 53-61 | |
| Authors: | WANG Wei TANG Jiao YIN Jinzhong PAN Feifei FAN Shuyan HUANG Wenwen WU Dafu |
| Affiliation: | College of Resources and Environment Sciences,Henan Institute of Science and Technology,College of Resources and Environment Sciences,Henan Institute of Science and Technology,College of Resources and Environment Sciences,Henan Institute of Science and Technology,College of Horticulture and Landscape Architecture,Henan Institute of Science and Technology,College of Resources and Environment Sciences,Henan Institute of Science and Technology,College of Resources and Environment Sciences,Henan Institute of Science and Technology,College of Resources and Environment Sciences,Henan Institute of Science and Technology |
| Abstract: | To explore the effects of combined full-rate straw incorporation (SW) and biogas slurry (BS) on soil water-stable aggregates and aggregated-associated organic carbon, lime concretion black soil in North China Plain was used as the research object. A field experiment was conducted with treatments including blank control (CK), SW alone, SW combined with low, middle and high amounts of BS, i.e., 450 m3/hm2(SW+LBS); 750 m3/hm2(SW+MBS), 1050 m3/hm2( SW+HBS). Soil samples in different layers (0-20 cm and 20-40 cm) were collected and water-stable aggregates and aggregate-associated organic carbon were analyzed. The results show that compared with CK, SW and BS significantly improve the mass proportion of water-stable macro-aggregates and aggregate stability in different layers. SW+MBS has the greatest mass proportions of water-stable macro-aggregates (WR0.25), mean weight diameter (MWD) and geometric mean diameter (GMD), but the lowest percentage of aggregate destruction (PAD) and fractal dimension (D). SW alone and SW combined BS significantly increase the contribution rate of macro-aggregate associated organic carbon in different layers, but decrease that of aggregates <0.25 mm. SW+MBS results in higher contribution rate of macro-aggregate associated organic carbon than other treatments. Therefore, SW combined appropriate BS is a promising approach for lime concretion black soil in this region by promoting water-stable large aggregate formation and aggregate stability, changing contents of aggregate-associated organic carbon and facilitating organic carbon distribution in large aggregates. The most obvious enhancement is obtained by SW+MBS. |
| Keywords: | Straw returning biogas slurry soil aggregates associated organic carbon lime concretion black soil |
| 点击此处可从《土壤》浏览原始摘要信息 | |
| 点击此处可从《土壤》下载全文 | |