干旱区生态环境知识资源中心(Arid): Soil Amendment Combining Bentonite and Maize Straw Improves Soil Quality Cropped to Oat in a Semi-Arid Region

Arid

DOI	10.3390/agronomy14051012
	Soil Amendment Combining Bentonite and Maize Straw Improves Soil Quality Cropped to Oat in a Semi-Arid Region
	Zhang, Lanying; Mi, Junzhen; Zhao, Baoping; Cui, Xuemei; Hu, Kexin; Mclaughlin, Neil B.; Liu, Jinghui
通讯作者	Liu, JH
来源期刊	AGRONOMY-BASEL
EISSN	2073-4395
出版年	2024
卷号	14 期号:5
英文摘要	Soil amendments have been proposed as an effective way to enhance soil carbon stocks on degraded soils, particularly in dryland farming areas. Soil organic carbon (SOC) plays an important role in improving soil quality, and soil aggregates are known to be crucial in sequestering and protecting SOC. However, how aggregation and protection of SOC by aggregates respond to a single application of bentonite combined with maize straw remains unknown, especially in the sandy soil of a semi-arid region. A three-year field experiment with four treatments [no amendment (CK), maize straw amendment addition only (T1, 6 Mg ha(-1)), bentonite amendment addition only (T2, 18 Mg ha(-1)), and maize straw combined with bentonite amendment (T3, 6 Mg ha(-1) maize straw plus 18 Mg ha(-1) bentonite)] was conducted in the Loess Plateau of China to assess the effects of bentonite and maize straw on aggregation and SOC. The results indicated that soil bulk density decreased by 2.72-5.42%, and soil porosity increased by 3.38-8.77% with three years of T3 application, especially in the 20-40 cm layer, compared with CK. T3 increased the amount of C input, SOC stock, and SOC stock sequestration rate by 1.04 Mg ha(-1) y(-1), 0.84-1.08 Mg ha(-1), and 0.49 Mg ha(-1) y(-1), respectively, and it increased the mass proportions and aggregate-associated C stock of >0.25 mm aggregates by 1.15-2.51- and 1.59-2.96-fold compared with CK. Correlation analysis showed a positive correlation of total SOC stock with the C concentration of >2 mm, 0.25-2 mm, and 0.053-0.25 mm aggregates. Aggregates of various sizes in sandy soils have the potential for greater SOC stock. Our findings suggest that the application of maize straw (6 Mg ha(-1)) combined with bentonite (18 Mg ha(-1)) would be an effective management strategy to enhance the bulk soil C pools by improving the soil structure and thereby improving soil fertility.
英文关键词	bentonite organic carbon maize straw soil aggregation soil amendments
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001233555200001
WOS关键词	ANNUAL CARBON INPUTS ; ORGANIC-MATTER ; SANDY SOIL ; STRUCTURAL STABILITY ; MINERALOGY ; FERTILITY ; SORGHUM
WOS类目	Agronomy ; Plant Sciences
WOS研究方向	Agriculture ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/402778
推荐引用方式 GB/T 7714	Zhang, Lanying,Mi, Junzhen,Zhao, Baoping,et al. Soil Amendment Combining Bentonite and Maize Straw Improves Soil Quality Cropped to Oat in a Semi-Arid Region[J],2024,14(5).
APA	Zhang, Lanying.,Mi, Junzhen.,Zhao, Baoping.,Cui, Xuemei.,Hu, Kexin.,...&Liu, Jinghui.(2024).Soil Amendment Combining Bentonite and Maize Straw Improves Soil Quality Cropped to Oat in a Semi-Arid Region.AGRONOMY-BASEL,14(5).
MLA	Zhang, Lanying,et al."Soil Amendment Combining Bentonite and Maize Straw Improves Soil Quality Cropped to Oat in a Semi-Arid Region".AGRONOMY-BASEL 14.5(2024).