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| Effect of a domestic waste thermal hydrolysate on soil nutrients and enzymatic activity |
| Received:December 03, 2020 |
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| KeyWord:domestic garbage;pyrohydrolysis;nutrient soil;soil fertility;enzymatic activity |
| Author Name | Affiliation | E-mail | | WANG Zhenhua | College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China
Environmental Sanitation Management Center of Yantai, Yantai 264000, China | | | WU Juan | College of Resources and Environment, Qingdao Agricultural University, Qingdao 266109, China | | | SONG Jianguo | School of Environmental and Material Engineering, Yantai University, Yantai 264005, China | | | BAI Jie | College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China | 461519761@qq.com |
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| Abstract: |
| Given the background of household waste classification, efficient disposal and resource utilization of organic components is an urgent problem. To clarify the effect and mechanism of thermally hydrolyzed vegetative soil of domestic waste on soil nutrient composition and vegetable growth, a pot experiment was used to investigate the effects of nutrient soil produced by the pyrohydrolysis of domestic waste on soil nutrients and enzyme activity during the planting of rapeseed. The results showed that the available nitrogen content in soil containing different nutrient soil proportions was higher than in the blank group at each rapeseed growth stage. The available nitrogen content increased with increasing nutrient soil application. The available phosphorus content was higher in the soil from 10 d to 30 d, with an initially rising then declining trend. The maximum value of available potassium was 312.18 mg·kg-1 occurring in nutrient soil with a soil mass ratio of 1∶3 applied at 30 d. The catalase, urease, and sucrase activities in soil were significantly higher than in CK and tended to increase with an increase in nutrient soil application. However, there was no significant difference in phosphatase activity between the treatment and control groups. Adding nutrient soil can increase the content of alkali-hydrolyzed nitrogen and improve catalase, urease, and sucrase activities in soil. Thus, it could improve soil fertility and enzyme activity, effectively promoting plant growth. |
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