| 引用本文: | 曹萌豪,陈 林,庞丹波,等.宁夏压砂地种植年限对土壤代谢产物的影响[J].灌溉排水学报,2023,42(S1):76-81. |
| CAO Menghao,CHEN Lin,PANG Danbo,et al.宁夏压砂地种植年限对土壤代谢产物的影响[J].灌溉排水学报,2023,42(S1):76-81. |
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| 摘要: |
| 【目的】探讨压砂地连作对土壤代谢产物的影响，揭示压砂地土壤退化机制。【方法】以宁夏不同种植年限压砂地土壤为研究对象，以未种植压砂瓜土壤为对照（V），对连续种植3 a（W）、7 a（X）、15 a（Y）和37 a（Z）的压砂地土壤进行代谢物和代谢通路分析。【结果】V-W组共检测到差异代谢物559种，其中428种上调，131种下调，V-X组共检测出差异代谢物293种，其中215种上调，78种下调，V-Y组共检测出差异代谢物730种，其中575种上调，155种下调，V-Z组共检测出差异代谢物666种，其中479种上调，187种下调；随着种植年限的增加，糖类物质量明显下降；从KEGG代谢通路来看，随着种植年限的增加，土壤富集显著的代谢通路有所减少，其中苯丙氨酸代谢和类固醇降解代谢在压砂年限>7 a时具有显著富集通路。【结论】随着压砂地种植年限的增加，土壤中有机酸积累量增加，而糖类物质量下降，会影响作物生长，降低作物抗逆性，因此连续压砂种植硒砂瓜的土地需要更改作物类型或转变土地利用方式，以增强土地利用的可持续性。 |
| 关键词: 压砂地；种植年限；代谢通路；差异代谢物 |
| DOI：10.13522/j.cnki.ggps.2022629 |
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| Effect of Planting Years on Soil Metabolites in Compacted Sandy Land in Ningxia |
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CAO Menghao, CHEN Lin, PANG Danbo, HE Wenqiang,
MA Jinpeng, WAN Hongyun, ZHANG Yaqi, LIU Hua
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1. Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration in Northwest China, Ningxia University, Yinchuan 750021, China; 2. Key Laboratory for Restoration and Reconstruction of Degraded Ecosystem in Northwest China of
Ministry of Education, Ningxia University, Yinchuan 750021, China; 3. College of Ecological Environment, Ningxia University,
Yinchuan 750021, China; 4. Institute of Forestry and Grassland Ecosystems, Ningxia Academy of Agriculture and
Forestry Sciences, Yinchuan 750002, China
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| Abstract: |
| 【Objective】 In order to investigate the effect of continuous cropping in pressed sand on soil metabolites and to reveal the mechanism of soil degradation in pressed sandland. 【Method】 In this study, the soil of pressed sand melon with different planting years in Ningxia was taken as the research object, and the soil without pressed sand melon was used as the control group (V) to analyze metabolites and metabolic pathways in the soil of pressed sand melon continuously planted with 3 (W), 7 (X), 15 (Y) and 37 (Z). 【Result】 A total of 559 different metabolites were detected in V vs W group, of which 428 were up-regulated and 131 were down-regulated, 293 different metabolites were detected in V vs X group, of which 215 were up-regulated and 78 were down-regulated, 730 different metabolites were detected in V vs Y group, of which 575 were up-regulated and 155 were down-regulated, and 666 different metabolites were detected in V vs Z group, of which 479 were up-regulated and 187 were down-regulated. With the increase of planting years, the content of carbohydrates decreased significantly, and the content of organic acids increased, which changed the soil environment and affected the growth and development of plants. In addition, the KEGG metabolic pathway shows that the metabolic activity in the soil decreases with the increase of planting years, especially the metabolism of amino acids, which directly affects the normal physiological activities of plants. 【Conclusion】 With the increase of planting life in pressed sand, the accumulation of organic acids in the soil increases, and the content of carbohydrates decreases, which leads to soil degradation and seriously affects the growth of crops. |
| Key words: sand-pressed land; planting years; metabolic pathways; differential metabolites |
