干旱区生态环境知识资源中心(Arid): Residual Effect of Bentonite-Humic Acid Amendment on Soil Health and Crop Performance 4-5 Years after Initial Application in a Dryland Ecosystem

Arid

DOI	10.3390/agronomy12040853
	Residual Effect of Bentonite-Humic Acid Amendment on Soil Health and Crop Performance 4-5 Years after Initial Application in a Dryland Ecosystem
	Bin Ma; Bao, Yangmei; Ma, Baoluo; McLaughlin, Neil B.; Li, Ming; Liu, Jinghui
通讯作者	Bin M
来源期刊	AGRONOMY-BASEL
EISSN	2073-4395
出版年	2022
卷号	12 期号:4
英文摘要	Degraded soils (including salinized, eroded, and low organic matter) resulting from natural and human effects are universal in arid and semi-arid regions all over the world. Bentonite and humic acid (BHA) are increasingly being tested to remediate these degraded lands, with potential benefits on crop production and soil health. A field study was conducted to quantify the effects of BHA application at six rates (0, 6, 12, 18, 24, and 30 Mg ha(-1)) on (i) dynamic changes in soil properties and (ii) oat crop productivity parameters in a dryland farming ecosystem. The specific objective of this paper was to determine the residual effects four to five years after a one-time BHA application on soil health and crop performance. The findings demonstrated that with the increasing rates of one-time BHA application, soil profile water storage displayed a piecewise linear plus plateau increase, whereas soil electrical conductivity, pH, and bulk density were all reduced significantly (p < 0.05) in the 0-20 cm and 20-60 cm layers. The improved soil environments gave rise to an increased activity of soil enzymes urease, invertase, and catalase that, respectively, reached peak values of 97%, 37%, and 32% of the control at the rates of 18 to 24 Mg BHA ha(-1). In turn, this boosted soil nutrient turnover, leading to a 40% higher soil available P. Compared with the control treatment, application of BHA at the estimated optimum rate (roughly 24 Mg ha(-1)) increased grain yield by 20%, protein yield by 62%, water use efficiency by 41%, and partial factor productivity of N by 20%. The results of this study indicated for the first time that a one-time BHA application would be a new and effective strategy to combat land degradation and drought, and promote a sustainable soil micro-ecological environment in dryland agroecosystems under a varying climate scenario.
英文关键词	sustainable dryland farming clay soil amendment soil water use organic matter enzyme activity nutrient turnover
类型	Article
语种	英语
开放获取类型	Green Submitted, gold
收录类别	SCI-E
WOS记录号	WOS:000786224400001
WOS关键词	ENZYME-ACTIVITIES ; USE EFFICIENCY ; WATER ; BIOCHAR ; GROWTH ; MAIZE ; YIELD ; CLAY ; IMPROVEMENT ; RESPONSES
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/2XILL650/391741
推荐引用方式 GB/T 7714	Bin Ma,Bao, Yangmei,Ma, Baoluo,et al. Residual Effect of Bentonite-Humic Acid Amendment on Soil Health and Crop Performance 4-5 Years after Initial Application in a Dryland Ecosystem[J],2022,12(4).
APA	Bin Ma,Bao, Yangmei,Ma, Baoluo,McLaughlin, Neil B.,Li, Ming,&Liu, Jinghui.(2022).Residual Effect of Bentonite-Humic Acid Amendment on Soil Health and Crop Performance 4-5 Years after Initial Application in a Dryland Ecosystem.AGRONOMY-BASEL,12(4).
MLA	Bin Ma,et al."Residual Effect of Bentonite-Humic Acid Amendment on Soil Health and Crop Performance 4-5 Years after Initial Application in a Dryland Ecosystem".AGRONOMY-BASEL 12.4(2022).