干旱区生态环境知识资源中心(Arid): Changes in soil biochemical properties following application of bentonite as a soil amendment

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DOI	10.1016/j.ejsobi.2020.103251
	Changes in soil biochemical properties following application of bentonite as a soil amendment
	Mi, Junzhen; Gregorich, Edward G.; Xu, Shengtao; McLaughlin, Neil B.; Ma, Bin; Liu, Jinghui
通讯作者	Liu, JH (corresponding author), Inner Mongolia Agr Univ, Natl Outstanding Agr Res Talents & Innovat Team S, Hohhot 010019, Inner Mongolia, Peoples R China.
来源期刊	EUROPEAN JOURNAL OF SOIL BIOLOGY
ISSN	1164-5563
EISSN	1778-3615
出版年	2021
卷号	102
英文摘要	Bentonite is a natural soil amendment that can reduce soil water loss and increase crop yield, but there are few studies about how bentonite influences soil biochemical properties. A field experiment was conducted with a millet [Setaria italic (L.) Beauv.] crop to evaluate the effect of bentonite amendments on soil biochemical properties including soil organic C, total N and total P, and soil microbial biomass C, N and P (MBC, MBN and MBP respectively) in the 0-20 cm soil layer in a semi-arid region in northern China from 2011 to 2015. Treatments included six rates of bentonite amendments (0, 6, 12, 18, 24 and 30 Mg ha(-1)) applied only in 2011, and a control with no bentonite amendment. Application of bentonite significantly increased soil microbial biomass parameters (MBC, MBN and MBP), soil organic C, and total N and total P over the five-year experimental period. MBC, MBN and MBP increases ranged from 5 to 50%, 3-42% and 3-34%, respectively; soil organic C, and total N and total P increases ranged from 1 to 15%, 1-19% and 0-17%, respectively. Bentonite also significantly increased MBC/MBN, MBC/MBP and MBN/MBP ratios, but it had no effect on soil C/N, C/P and N/P ratios. The application rate of 18 Mg ha(-1) had the greatest effect in the first year, whereas 30 Mg ha(-1) bentonite had the greatest effect in the fifth year. Increases in soil microbial activity and nutrient cycling and availability were attributed to higher soil water content accompanying the bentonite amendment resulting in improved plant growth and organic matter inputs to the soil providing increased substrates for microbes. Our results show that bentonite as a soil amendment can enhance sustainable agriculture production in semi-arid areas.
英文关键词	Bentonite amendment Millet Microbial biomass Soil organic C
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000612696400006
WOS关键词	MICROBIAL BIOMASS C ; ORGANIC-MATTER ; CARBON ; DYNAMICS ; AVAILABILITY ; PRODUCTIVITY ; RESPONSES ; ECOSYSTEM ; NITROGEN ; QUALITY
WOS类目	Ecology ; Soil Science
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/347877
作者单位	[Mi, Junzhen; Ma, Bin; Liu, Jinghui] Inner Mongolia Agr Univ, Natl Outstanding Agr Res Talents & Innovat Team S, Hohhot 010019, Inner Mongolia, Peoples R China; [Mi, Junzhen; Gregorich, Edward G.; McLaughlin, Neil B.; Ma, Bin] Agr & Agri Food Canada, Ottawa Res & Dev Ctr, Ottawa, ON K1A 0C6, Canada; [Xu, Shengtao] Yunnan Acad Agr Sci, Agr Environm & Resources Inst, Kunming 650205, Yunnan, Peoples R China
推荐引用方式 GB/T 7714	Mi, Junzhen,Gregorich, Edward G.,Xu, Shengtao,et al. Changes in soil biochemical properties following application of bentonite as a soil amendment[J],2021,102.
APA	Mi, Junzhen,Gregorich, Edward G.,Xu, Shengtao,McLaughlin, Neil B.,Ma, Bin,&Liu, Jinghui.(2021).Changes in soil biochemical properties following application of bentonite as a soil amendment.EUROPEAN JOURNAL OF SOIL BIOLOGY,102.
MLA	Mi, Junzhen,et al."Changes in soil biochemical properties following application of bentonite as a soil amendment".EUROPEAN JOURNAL OF SOIL BIOLOGY 102(2021).