干旱区生态环境知识资源中心(Arid): Effects of long-term (42 years) tillage sequence on soil chemical characteristics in a dryland farming system

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DOI	10.1016/j.still.2021.105064
	Effects of long-term (42 years) tillage sequence on soil chemical characteristics in a dryland farming system
	Tshuma, Flackson; Rayns, Francis; Labuschagne, Johan; Bennett, James; Swanepoel, Pieter Andreas
通讯作者	Tshuma, F (corresponding author), Stellenbosch Univ, Dept Agron, Private Bag X1, ZA-7602 Matieland, South Africa.
来源期刊	SOIL & TILLAGE RESEARCH
ISSN	0167-1987
EISSN	1879-3444
出版年	2021
卷号	212
英文摘要	No-tillage can improve soil quality but can also increase the stratification of soil chemical parameters. Nutrient uptake by crops might be limited when nutrients are stratified, especially in semi-arid or Mediterranean regions. To reduce stratification, infrequent tillage could be considered. However, there is a paucity of information on the effects of long-term infrequent tillage on the stratification of soil chemical parameters. This study aimed to assess the effects of long-term infrequent tillage on the stratification of selected soil chemical parameters to a depth of 300 mm. The research was conducted on a long-term (42 years) research site at Langgewens Research Farm in South Africa. Seven tillage treatments were investigated: continuous mouldboard ploughing to a depth of 200 mm, tine-tillage to 150 mm, shallow tine-tillage to 75 mm, no-tillage, shallow tine-tillage every second year in rotation with no-tillage, shallow tine-tillage every third year in rotation with no-tillage and shallow tine-tillage every fourth year in rotation with no-tillage. Tillage treatments had differential effects on the distribution of soil chemical parameters. The mouldboard plough prevented stratification of most soil chemical parameters, such as soil acidity, soil organic carbon (SOC), extractable P, exchangeable Ca and Mg and cation exchange capacity (CEC). However, mouldboard ploughing also led to significantly lower SOC stocks and extractable P stocks. The SOC stocks and extractable P stocks of the no-tillage treatment were not significantly different from those of the infrequent tillage treatments. Overall, the infrequent tillage treatments were no better (P > 0.05) than the notillage treatment as infrequent tillage could not effectively ameliorate the stratification of most soil chemical parameters and did not increase the stocks and stratification ratios of SOC and extractable P.
英文关键词	Infrequent tillage Tillage sequence No-tillage Nutrient stratification
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000663676900003
WOS关键词	TRITICUM-AESTIVUM L. ; NO-TILL ; CONSERVATION AGRICULTURE ; ORGANIC-MATTER ; STRATIFICATION RATIO ; CROP-ROTATION ; CARBON ; QUALITY ; NITROGEN ; NUTRIENTS
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368592
作者单位	[Tshuma, Flackson; Swanepoel, Pieter Andreas] Stellenbosch Univ, Dept Agron, Private Bag X1, ZA-7602 Matieland, South Africa; [Tshuma, Flackson; Rayns, Francis; Bennett, James] Coventry Univ, Ctr Agroecol Water & Resilience CAWR, Wolston Lane, Coventry CV8 3LG, W Midlands, England; [Labuschagne, Johan] Western Cape Dept Agr, ZA-7607 Elsenburg, South Africa
推荐引用方式 GB/T 7714	Tshuma, Flackson,Rayns, Francis,Labuschagne, Johan,et al. Effects of long-term (42 years) tillage sequence on soil chemical characteristics in a dryland farming system[J],2021,212.
APA	Tshuma, Flackson,Rayns, Francis,Labuschagne, Johan,Bennett, James,&Swanepoel, Pieter Andreas.(2021).Effects of long-term (42 years) tillage sequence on soil chemical characteristics in a dryland farming system.SOIL & TILLAGE RESEARCH,212.
MLA	Tshuma, Flackson,et al."Effects of long-term (42 years) tillage sequence on soil chemical characteristics in a dryland farming system".SOIL & TILLAGE RESEARCH 212(2021).