Effects of organic fertilizer on microbial characteristics and enzyme activities of soil degraded by highway construction

YUAN Zhongyou; LIANG Zhonglong; YANG Qijun; LIU Qing; WU Jialong; DAI Jun

doi:10.7671/j.issn.1001-411X.2017.06.009

Journal of South China Agricultural University > 2017 > 38(6): 58-63. > DOI: 10.7671/j.issn.1001-411X.2017.06.009

YUAN Zhongyou, LIANG Zhonglong, YANG Qijun, LIU Qing, WU Jialong, DAI Jun. Effects of organic fertilizer on microbial characteristics and enzyme activities of soil degraded by highway construction[J]. Journal of South China Agricultural University, 2017, 38(6): 58-63. DOI: 10.7671/j.issn.1001-411X.2017.06.009

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Effects of organic fertilizer on microbial characteristics and enzyme activities of soil degraded by highway construction

YUAN Zhongyou^{1, 2,},
LIANG Zhonglong^{2, 3},
YANG Qijun^{2, 3},
LIU Qing^{2, 3},
WU Jialong^{2, 3},
DAI Jun^{2, 3, ,}

1.
College of Public Management, South China Agricultural University, Guangzhou 510642, China
2.
Key Laboratory of Arable Land Conservation of Ministry of Agriculture/ Key Laboratory of the Ministry of Land and Resources for Construction Land Transformation/Guangdong Province Key Laboratory of Land Use and Consolidation, Guangzhou 510642, China
3.
College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China

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Received Date: January 08, 2017
Available Online: May 17, 2023

Graphical Abstract

Abstract

Abstract

Objective
To study the short-term effects of different fertilizers on microbial characteristics and enzyme activities of lateritic soil degraded by highway construction.

Method
Greenhouse pot experiments were performed using Neyraudia reynaudiana. The lateritic soil degraded by highway construction was used as control(CK). Three fertilization treatments included chemical fertilizer(HF) with the same NPK degree as vermicompost, cattle manure (NF) and vermicompost (YF). The effects of different treatments on soil microbial characteristics and enzyme activities were investigated by principal component analysis.

Result
Compared with HF treatment, soil microbial biomass carbon, microbial biomass nitrogen, soil respiration, amounts of metabolic entropy, bacteria, fungi and actinomycetes significantly increased by 70%, 96%, 1 239%, 699%, 300%, 1 155% and 272% respectively in NF treatment, and increased by 80%, 130%, 1 458%, 773%, 295%, 324% and 285% respectively in YF treatment(P<0.05). Soil invertase, urease, catalase, acid phosphatase,β-glucosidase, acetylglucosaminidase, polyphenol oxidase and peroxidase activities significantly increased by 61%, 37%, 36%, 119%, 259%, 1 973%, 175% and 550% respectively in NF treatment, and increased by 66%, 40%, 52%, 128%, 302%, 1 641%, 182% and 428% respectively in YF treatment (P<0.05).

Conclusion
In short-term, applying organic fertilizer such as cattle manure and vermicompost is better than using chemical fertilizer for improving soil microbial properties, enhancing soil enzyme activities and improving comprehensive quality of soil degraded by construction. NF and YF treatments have no significant differences in their effects on soil microbial properties and enzyme activities. Applying organic fertilizer is an effective way to repair rapidly the soil degraded by construction.
- organic fertilizer,
- highway,
- microbial characteristic,
- enzyme activity,
- soil remediation,
- principal component analysis

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