| 生物炭与强还原处理对设施蔬菜土壤可溶性有机质的影响 |
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| 引用本文： | 闫代红,吉春阳,何云华,马亚培,马红亮,高人,尹云锋.生物炭与强还原处理对设施蔬菜土壤可溶性有机质的影响[J].水土保持学报,2022,36(2):283-291. |
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| 作者姓名： | 闫代红 吉春阳 何云华 马亚培 马红亮 高人 尹云锋 |
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| 作者单位： | 1. 福建师范大学湿润亚热带山地生态国家重点实验室培育基地, 福州 350007;2. 福建师范大学地理科学学院, 福州 350007;3. 福清市现代农业发展中心, 福建 福清 350300 |
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| 基金项目： | 福建省自然科学基金项目（2021J01143）；福建省公益类项目（2020R1002005）；国家自然科学基金项目（31470628,31770659） |
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| 摘 要： | 利用田间试验,探讨生物炭与强还原处理(RSD)对退化设施蔬菜土壤可溶性有机质(DOM)的影响.处理为对照(CK)、生物炭修复(BC)、淹水(SF)、淹水覆膜(SFF)、强还原修复(RSD)、RSD与生物炭联合修复(RSD+BC),对比研究不同处理对0-20,20-40 cm 土壤DOM含量及光谱特征的影响.结果表明:0...
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| 关 键 词： | 强还原处理 生物炭 设施蔬菜土壤 可溶性有机质 光谱特征 |
| 收稿时间： | 2021/9/6 0:00:00 |
Effects of Biochar and Reductive Soil Disinfestation on Dissolved Organic Matter in Facility Vegetable Soils |
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| YAN Daihong,JI Chunyang,HE Yunhu,MA Yapei,MA Hongliang,GAO Ren,YIN Yunfeng.Effects of Biochar and Reductive Soil Disinfestation on Dissolved Organic Matter in Facility Vegetable Soils[J].Journal of Soil and Water Conservation,2022,36(2):283-291. |
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| Authors: | YAN Daihong JI Chunyang HE Yunhu MA Yapei MA Hongliang GAO Ren YIN Yunfeng |
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| Institution: | 1. State Key Laboratory for Subtropical Mountain Ecology of the Ministry of Science and Technology and Fujian Province, Fujian Normal University, Fuzhou 350007;2. School of Geographical Sciences, Fujian Normal University, Fuzhou 350007;3. Fuqing Modern Agriculture Development Center, Fuqing, Fujian 350300 |
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| Abstract: | A field experiment was conducted to investigate the effects of reductive soil disinfestation (RSD) and biochar (BC) application on dissolved organic matter (DOM) in degraded vegetable soils. In this study, six treatments, i.e., (1)soil untreated (CK), (2) soil incorporated with 1% (w/w) biochar (BC), (3) soil flooded (SF), (4) soil flooded and covered with plastic film (SFF), (5) soil incorporated with 1% (w/w) alfalfa residue, flooded and covered with plastic film (RSD), and (6) soil incorporated with 1% (w/w) alfalfa residue and 1% (w/w) biochar, flooded and covered with plastic film (RSD+BC) were performed to compare the effects of different treatments on DOM content and its spectral characteristics in soil 0-20 cm and 20-40 cm of layers. The results showed that for 0-20 cm soil, compared with CK, soil pH value of other treatments was increased significantly, and NO3--N contents of BC, SF, SFF, and RSD treatments were significantly decreased by 31.9%, 59.4%, 40.0%, and 22.3%, respectively. Soil dissolved organic nitrogen (DON) content was significantly increased by RSD treatment (P<0.05). The contents of dissolved organic carbon (DOC) in RSD and RSD+BC treatments were significantly increased by 188.2% and 201.4% (P<0.05), respectively, whereas the degree of DOM aromatization and humification was decreased under the two treatments. Soil DOM was mainly composed of fulvic acid-like and humic acid-like material, and the fluorescence intensity of DOM in RSD+BC treatment reached the maximum. For 20-40 cm soil, the fluorescence intensity and DOC contents of all treatments were decreased significantly compared with that of 0-20 cm soil. However, compared with CK, the DOC contents in RSD and RSD+BC treatments were still increased significantly (P<0.05), while the DON contents in BC and RSD+BC treatments were decreased. These results implied that the combination of biochar and RSD could further alleviate soil acidification in the short period, improve soil DOC content, and reduce the degree of soil DOM aromatization and humification. This study provides scientific guidance for the remediation and environmental risk assessment of degraded facility vegetable soil. |
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| Keywords: | reductive soil disinfestation biochar facility vegetable soil dissolved organic matter spectral characteristics |
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