| 长期施肥对潮土不同层次活性有机质及碳库管理指数的影响 |
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| 引用本文： | 张玉军,黄绍敏,李斌,龙潜,姜桂英,申凤敏,刘世亮.长期施肥对潮土不同层次活性有机质及碳库管理指数的影响[J].水土保持学报,2019,33(3):160-165. |
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| 作者姓名： | 张玉军 黄绍敏 李斌 龙潜 姜桂英 申凤敏 刘世亮 |
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| 作者单位： | 1. 河南农业大学资源与环境学院, 郑州 450002;2. 郑州市城市园林科学研究所, 郑州 450051;3. 河南农业科学院植物营养与资源环境研究所, 郑州 450002;4. 河南省农业厅中药材生产技术服务中心, 郑州 450008 |
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| 基金项目： | 国家重点研发计划项目（2016YFD0300803）；国家自然科学基金项目（41401327）；中国农业科学院开放基金项目（2015Y） |
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| 摘 要： | 为探索长期不同施肥下潮土不同土层活性有机质和碳库管理指数变化特征,选取不施肥对照(CK)、单施氮磷钾肥(NPK)、NPK配施有机肥(NPKM)和NPK配施秸秆还田(NPKS)4个典型施肥处理,测定并分析土壤高、中、低活性有机质含量以及碳库管理指数(CMI)变化特征。结果表明:各处理土壤有机质含量均随土层加深而降低,且处理间差异随土层深度缩小。施肥处理相对不施肥对照(CK)均明显提升了不同土层的有机质含量,以NPKM处理最高,达到13.91～33.55 g/kg。各处理以非活性和低活性有机质为主,且其比例随着土层加深而增加,其中CK处理比例最高,分别为35.6%～56.6%和17.7%～50.7%。施肥处理对土壤CMI均有提高,在0—40 cm土层,NPKS的高活性CMI最高,分别为149.54,147.01,237.65;而在40—60 cm土层,以NPKM处理的高、中活性CMI最高,达到237.65,537.67。综上所述,各处理土壤有机质和活性有机质含量均随土层加深而降低,且处理间差异随土层深度缩小;氮磷钾配施有机肥提升总有机质及活性有机质处理效果最佳。在上层土层(0—40 cm)氮磷钾配施秸秆有助于提升高、中活性有机质的碳库管理指数;而在下层土层(40—60 cm)则以氮磷钾配施有机肥最优。整体来看,NPK配施有机肥(NPKM)对土壤的肥力提升效果最好,NPK配施秸秆还田(NPKS)次之。
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| 关 键 词： | 长期施肥 不同土层 活性有机质 碳库管理指数 |
| 收稿时间： | 2018/11/12 0:00:00 |
Effects of Long-term Fertilization on the Labile Organic Carbon and Carbon Pool Management Index at Different Layers in Fluvo-aquic Soil |
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| ZHANG Yujun,HUANG Shaomin,LI Bin,LONG Qian,JIANG Guiying,SHEN Fengmin,LIU Shiliang.Effects of Long-term Fertilization on the Labile Organic Carbon and Carbon Pool Management Index at Different Layers in Fluvo-aquic Soil[J].Journal of Soil and Water Conservation,2019,33(3):160-165. |
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| Authors: | ZHANG Yujun HUANG Shaomin LI Bin LONG Qian JIANG Guiying SHEN Fengmin LIU Shiliang |
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| Institution: | 1. College of Resources and Environmental Sciences, Henan Agricultural University, Zhengzhou 450002;2. Zhengzhou Institute of Urban Landscape and Architecture, Zhengzhou 450051;3. Institute of Plant Nutrition, Resources and Environment, Henan Academy of Agricultural Science, Zhengzhou 450002;4. Chinese Medicine Production Technology Service Center, Agriculture Department of Henan Province, Zhengzhou 450008 |
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| Abstract: | Based on a long-term experiment, the effects of different fertilization on labile organic matter (LOM) and carbon management index (CMI) in different soil layers were explored. Four typical fertilization treatments were selected as:(1) No fertilizer (CK); (2) mineral nitrogen, phosphorus, and potassium (NPK); (3) NPK plus manure (NPKM); (4) NPK plus straw (NPKS). The highly, moderately and lowly LOM and CMI were measured and analyzed. The results showed that the soil organic matter (SOM) content and its difference among treatments were decreased with increment of soil depth. Compared with CK, the SOM content under the treatments with fertilizer was significantly higher, and the highest one was under NPKM with 13.91~33.55 g/kg. The Non-LOM and lowly LOM accounted for the major part of the total SOM, and the proportion increased with depth. CK showed the highest proportion with 35.6%~56.6% and 17.7%~50.7%, respectively. The CMI increased under the fertilization treatments, and varied among soil layers. At 0-40 cm, the CMI of highly and moderately LOM under NPKS was obviously higher than that under the other treatments as 149.54, 147.01, 237.65, respectively. The CMI under NPKM was the highest at 40-60 cm as 237.65, 537.67, respectively. In sum, the SOM and LOM content and their difference among treatments decreased with increment of soil depth. The fertilization improved SOM and LOM content, and the optimum one was NPKM. The CMI of highly and moderately LOM was higher under NPKS at upper layer (0 - 40 cm), and which was higher under NPKM at below layer (40 - 60 cm). Generally, the soil fertility was improved under NPKM, and followed by NPKS. |
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| Keywords: | long-term fertilization different soil layers labile organic matter carbon management index |
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