Subsurface organic ameliorant plus polyethylene mulching strengthened soil organic carbon by altering saline soil aggregate structure and regulating the fungal community

Subsurface organic ameliorant plus polyethylene mulching is a novel strategy for saline soil improvement and utilization in China. However, little is known about how this strategy impacts soil organic carbon (SOC) both directly (carbon input) and indirectly (soil aggregates protection and microbial...

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Published in:Land degradation & development 2022-08, Vol.33 (14), p.2543-2553
Main Authors: Zhang, Hongyuan, Pang, Huancheng, Song, Jiashen, Chang, Fangdi, Wang, Jing, Wang, Xiquan, Zhang, Yitao, Peixoto, Leanne, Li, Yuyi
Format: Article
Language:English
Subjects:
Aggregates
Agricultural practices
Carbon
Fungi
microbial community
Microorganisms
Mulching
Multivariate statistical analysis
Organic carbon
Organic soils
Polyethylene
polyethylene mulching
Polyethylenes
saline soil organic carbon
Saline soils
Soil aggregates
Soil amendment
Soil depth
Soil improvement
Soil structure
subsurface organic ameliorant
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Summary:Subsurface organic ameliorant plus polyethylene mulching is a novel strategy for saline soil improvement and utilization in China. However, little is known about how this strategy impacts soil organic carbon (SOC) both directly (carbon input) and indirectly (soil aggregates protection and microbial regulation). Therefore, a field experiment was arranged and sampled after 3 years, including four treatments, i.e., no ameliorant with and without polyethylene mulching, and subsurface (10–30 cm soil depth) organic ameliorant with and without polyethylene mulching. Subsurface organic ameliorant raised the SOC content in the 0–40 cm by 70% and 90% with and without mulching, respectively. Subsurface organic ameliorant converted the major aggregation size from
ISSN:1085-3278
1099-145X
DOI:10.1002/ldr.4330