MUSHROOM RESIDUES IMPROVE THE SLUDGE SOLIDIFIED SOIL QUALITY AND ENHANCE RYEGRASS GROWTH

CHEN Wenfeng; XIA Xinxing; LI Shimi

doi:DOI:10.13205/j.hjgc.202207017

Volume 40 Issue 7

Sep. 2022

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CHEN Wenfeng, XIA Xinxing, LI Shimi. MUSHROOM RESIDUES IMPROVE THE SLUDGE SOLIDIFIED SOIL QUALITY AND ENHANCE RYEGRASS GROWTH[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(7): 116-122,68. doi: DOI:10.13205/j.hjgc.202207017

Citation:

CHEN Wenfeng, XIA Xinxing, LI Shimi. MUSHROOM RESIDUES IMPROVE THE SLUDGE SOLIDIFIED SOIL QUALITY AND ENHANCE RYEGRASS GROWTH[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(7): 116-122,68. doi: DOI:10.13205/j.hjgc.202207017

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MUSHROOM RESIDUES IMPROVE THE SLUDGE SOLIDIFIED SOIL QUALITY AND ENHANCE RYEGRASS GROWTH

doi: DOI:10.13205/j.hjgc.202207017

CHEN Wenfeng^1,2,3,4,
XIA Xinxing^{1,2,3,4
,
,},
LI Shimi^1,2,3,4

1. CCCC Second Harbor Engineering Co., Ltd, Wuhan 430040, China;
2. CCCC Highway Bridge National Engineering Research Centre Co., Ltd, Wuhan 430040, China;
3. Key Laboratory of Large-span Bridge Construction Technology, Wuhan 430040, China;
4. Research and Development Center of Transport Industry of Intelligent Manufacturing Technologies of Transport Infrastructure, Wuhan 430040, China

Received Date: 2021-10-21
Available Online: 2022-09-02

Abstract

Abstract

Aiming at the defects of high hardening degree and insufficient nutrients of sludge solidified soil,the solidified soil was improved by physically mixing with mushroom residue and magnesium sulfate for landscaping.The effects of mushroom residue content and particle size on improvement of sludge solidified soil were studied by analysing the physical properties and nutrient content of mushroom residue improved soil,ryegrass seed germination test,and pot experiment.The results showed that the sludge solidified soil mixed with 40 g/kg with a particle size of 5~10 mm bacterial residue and 0.2 g/kg magnesium sulfate had the best effect.The plant height of ryegrass increased by 32.3% and the dry weight increased by 126.7%.Mushroom residue had loose and porous characteristics,which could improve soil pore structure,reduce soil bulk density and improve soil water retention;magnesium sulfate supplemented available magnesium and available sulfur in soil;and the nutrients of bacterial residue improved the content of soil organic matter,hydrolyzable nitrogen,available phosphorus,available potassium and other nutrients,and improved the ability of soil fertilizer retention.Bacterial residue can be used as a soil conditioner to realize the low-cost improvement and utilization of sludge solidified soil.
- sludge,
- solidified soil,
- mushroom residue,
- ryegrass,
- resource utilization

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References(32)

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