| 生物炭对塿土土壤容重和团聚体的影响 |
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| 引用本文： | 李倩倩,许晨阳,耿增超,张久成,陈树兰,王慧玲,张妍,贠方悦,杨林,董胜虎.生物炭对塿土土壤容重和团聚体的影响[J].环境科学,2019,40(7):3388-3396. |
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| 作者姓名： | 李倩倩 许晨阳 耿增超 张久成 陈树兰 王慧玲 张妍 贠方悦 杨林 董胜虎 |
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| 作者单位： | 西北农林科技大学资源环境学院,农业部西北植物营养与农业环境重点实验室,杨凌712100;汉中市农产品质量安全监测检验中心,汉中,723000 |
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| 基金项目： | 农业部农业环境重点实验室开放基金项目（K4030217149）；陕西省重点研发项目（2018NY-094）；西北农林科技大学大学生创新训练计划项目（201710712037） |
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| 摘 要： | 通过比较生物炭施入土壤2 a和5 a的试验结果,研究随年限的增长生物炭的添加对塿土容重和土壤团聚体含量及稳定性的影响.采用田间定位试验和室内分析,试验设生物炭用量为0 t·hm~(-2)(B0)、20 t·hm~(-2)(B20)、40 t·hm~(-2)(B40)、60t·hm~(-2)(B60)和80 t·hm~(-2)(B80)这5个处理,将果树树干、枝条生物炭(450℃、限氧条件下)施入土壤,与耕层土壤混匀.经过5 a,分3层测定0～30 cm土层(即0～10、10～20和20～30 cm)的土壤容重、团聚体及有机碳含量.结果表明:①生物炭施入土壤5 a与施入2 a的结果相比,其对0～10 cm和10～20 cm土层团聚体影响相对减弱,对20～30 cm土层土壤容重和团聚体的影响显著增强.②随着年限的增长,在0～10 cm土层,生物炭施用量为40 t·hm~(-2)时, 0. 25 mm团聚体的含量及团聚体稳定性显著增强,容重显著减小;在10～20 cm和20～30 cm土层,生物炭施用量为60～80 t·hm~(-2)时, 0. 25 mm团聚体的含量及团聚体稳定性显著增强,容重显著减小.③当生物炭施用量为60 t·hm~(-2)时,对土壤有机碳的增加效果表现最优.说明生物炭对土壤团聚体的影响是一个渐进的过程.生物炭施入土壤5 a,其对深层土壤的影响更为显著,20～30 cm土层的土壤容重显著降低, 0. 25 mm团聚体的含量及团聚体稳定性显著增强.从经济效益和改善效果综合考虑,在耕层土壤施入40～60 t·hm~(-2)的生物炭最适.
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| 关 键 词： | 填土 生物炭 土壤容重 土壤团聚体 土壤有机碳 |
| 收稿时间： | 2018/8/12 0:00:00 |
| 修稿时间： | 2019/1/25 0:00:00 |
Impact of Biochar on Soil Bulk Density and Aggregates of Lou Soil |
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| LI Qian-qian,XU Chen-yang,GENG Zeng-chao,ZHANG Jiu-cheng,CHEN Shu-lan,WANG Hui-ling,ZHANG Yan,YUN Fang-yue,YANG Lin and DONG Sheng-hu.Impact of Biochar on Soil Bulk Density and Aggregates of Lou Soil[J].Chinese Journal of Environmental Science,2019,40(7):3388-3396. |
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| Authors: | LI Qian-qian XU Chen-yang GENG Zeng-chao ZHANG Jiu-cheng CHEN Shu-lan WANG Hui-ling ZHANG Yan YUN Fang-yue YANG Lin and DONG Sheng-hu |
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| Institution: | Key Laboratory of Plant Nutrition and Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China,Key Laboratory of Plant Nutrition and Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China,Key Laboratory of Plant Nutrition and Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China,Hanzhong Agricultural Product Quality and Safety Monitoring and Inspection Center, Hanzhong 723000, China,Key Laboratory of Plant Nutrition and Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China,Key Laboratory of Plant Nutrition and Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China,Key Laboratory of Plant Nutrition and Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China,Key Laboratory of Plant Nutrition and Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China,Key Laboratory of Plant Nutrition and Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China and Key Laboratory of Plant Nutrition and Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China |
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| Abstract: | |
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| Keywords: | Lou soil biochar soil bulk density soil aggregates soil organic carbon |
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