干旱区生态环境知识资源中心(Arid): Biotic relationships to aggregation in a Vertisol under long-term no-till, stubble retention and nitrogen fertilisation

Arid

DOI	10.1016/j.apsoil.2023.105260
	Biotic relationships to aggregation in a Vertisol under long-term no-till, stubble retention and nitrogen fertilisation
	Daroch, Rupinder K.; Dang, Yash P.; Mckenna, Brigid; Robinson, Nicole; Finn, Damien; Page, Kathryn; Reeves, Steven; Dalal, Ram C.
通讯作者	Dalal, RC
来源期刊	APPLIED SOIL ECOLOGY
ISSN	0929-1393
EISSN	1873-0272
出版年	2024
卷号	195
英文摘要	Soil aggregation is critical for high-clay Vertisols to facilitate water movement, aeration, nutrient cycling, microbial activity, and hence soil productivity. Both abiotic and biotic factors affect aggregation, although the effect of biotic factors on aggregation remains unclear in subtropical Vertisols managed under no-till (NT), stubble retained (SR) and N fertilisation practice. Using a 54-years old cereal cropped NT experiment in subtropical semi-arid region, we examined the biotic effects on soil aggregate-size distribution in a smectitic Vertisol (65 % clay) at 0-0.1 m depth. The experiment consisted of NT versus conventional till (CT), SR versus stubble burned (SB), and N fertiliser rates (0, 30, and 90 kg N ha(-1); N0, N30, and N90, respectively) arranged in a randomised complete block design, with four replications (48 plots). NT generally had no significant effect on biotic factors and aggregate mean weight diameter (MWD). SR had significantly higher microbial activity (as assessed by cumulative CO2 production over 140 days), C-acquiring and N-acquiring enzyme activities (beta-glucosidase, cellobiohydrolase, N-acetyl-beta-D-glucosaminidase), easily extractable and total glomalin-related proteins, microbial biomass C, large- (>2 mm) and medium aggregates (1-2 mm), and MWD (1.23 +/- 0.06 mm in SR and 1.02 +/- 0.07 mm in SB (P < 0.02)). In addition, N fertiliser rates had significantly higher soil organic C and mineral associated organic N but lower C:N ratio. Thus, soil organic C and N, microbial biomass C, glomalin, and microbial and enzyme activities enhanced by SR, and lower C:N ratio of the organic matter following N fertilisation improved MWD in this subtropical Vertisol.
英文关键词	Aggregation Microbial activity Soil organic C Soil total N Enzyme activity Mean weight diameter
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:001165136300001
WOS关键词	SOIL ORGANIC-MATTER ; MICROBIAL BIOMASS ; EXTRACTION METHOD ; CROP RESIDUE ; CARBON ; STORAGE ; SEQUESTRATION ; STOICHIOMETRY ; ENZYMES ; LAND
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/2XILL650/402885
推荐引用方式 GB/T 7714	Daroch, Rupinder K.,Dang, Yash P.,Mckenna, Brigid,et al. Biotic relationships to aggregation in a Vertisol under long-term no-till, stubble retention and nitrogen fertilisation[J],2024,195.
APA	Daroch, Rupinder K..,Dang, Yash P..,Mckenna, Brigid.,Robinson, Nicole.,Finn, Damien.,...&Dalal, Ram C..(2024).Biotic relationships to aggregation in a Vertisol under long-term no-till, stubble retention and nitrogen fertilisation.APPLIED SOIL ECOLOGY,195.
MLA	Daroch, Rupinder K.,et al."Biotic relationships to aggregation in a Vertisol under long-term no-till, stubble retention and nitrogen fertilisation".APPLIED SOIL ECOLOGY 195(2024).