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| 江西井冈蜜柚种植区果园土壤肥力现状及区域分布特征 |
| Status, spatial distribution，and fertility of soil in pomelo orchards in Jinggang, Jiangxi Province |
| Received:August 02, 2021 |
| DOI：10.13254/j.jare.2021.0475 |
| 中文关键词: 井冈蜜柚，土壤肥力，区域分布，有机质，微量元素 |
| 英文关键词: Jinggang pomelo, soil fertility, regional distribution, organic matter, trace element |
| 基金项目:国家重点研发计划项目（2017YFD0200808）；吉安市重大科技专项（吉财教指〔2020〕83号）；井冈山农高区科技计划项目（井农科字〔2021〕51号） |
| Author Name | Affiliation | E-mail | | WU Qiangjian | Jiangxi Jinggang Pomelo Science and Technology Backyard, Jiangxi Agricultural University, Nanchang 330045, China
School of Land Resources and Environment, Jiangxi Agricultural University/Innovative Integration Center of Industry and Education in Resource Utilization of Agricultural Waste, Prevention and Control of Non-point Pollution of Jiangxi Province, Nanchang 330045, China | | | XIAO Weiming | Jiangxi Ji'an Horticultural Field, Ji'an 343016, China | | | ZHAO Xiaodong | Jinggangshan Agricultural Science and Technology Park Management Committee, Ji'an 343016, China | | | XIE Zhijian | Jiangxi Jinggang Pomelo Science and Technology Backyard, Jiangxi Agricultural University, Nanchang 330045, China
School of Land Resources and Environment, Jiangxi Agricultural University/Innovative Integration Center of Industry and Education in Resource Utilization of Agricultural Waste, Prevention and Control of Non-point Pollution of Jiangxi Province, Nanchang 330045, China | | | PENG Jianfeng | School of Land Resources and Environment, Jiangxi Agricultural University/Innovative Integration Center of Industry and Education in Resource Utilization of Agricultural Waste, Prevention and Control of Non-point Pollution of Jiangxi Province, Nanchang 330045, China | | | ZHOU Chunhuo | Jiangxi Jinggang Pomelo Science and Technology Backyard, Jiangxi Agricultural University, Nanchang 330045, China
School of Land Resources and Environment, Jiangxi Agricultural University/Innovative Integration Center of Industry and Education in Resource Utilization of Agricultural Waste, Prevention and Control of Non-point Pollution of Jiangxi Province, Nanchang 330045, China | zchh3366@163.com |
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| 中文摘要: |
| 为探究江西井冈蜜柚种植区果园土壤肥力现状及区域分布特征，在江西省井冈蜜柚110个主产果园采集表土层（0~20cm）、亚表土层（20~40 cm）和底土层（40~60 cm）土壤，运用ArcGIS技术、相关性分析和主成分分析，对土壤pH、有机质及养分含量等12项土壤肥力指标进行系统分析。结果表明：果园表层土壤pH值为4.00~7.38，土壤有机质和碱解氮、有效磷、速效钾、有效锌、交换性镁含量分别为7.85~32.71 g·kg-1和45.50~318.50、1.99~146.11、26.96~306.08、0.36~16.47、15.00~219.63 mg·kg-1；有效铜和交换性钙含量分别低于7.91 mg·kg-1和658.88 mg·kg-1；果园土壤肥力指标含量随土壤深度增加而降低；总体上，种植区表层土壤pH分布呈中部高四周低的格局，有效磷含量与之相反，有机质含量西部高东部低，微量元素含量南部低北部高。相关性分析表明，表层土壤pH与交换性镁含量呈显著正相关，交换性镁含量与交换性钙、有效锌、全磷、速效钾含量均呈显著正相关。主成分分析表明，土壤交换性钙、交换性镁、碱解氮和有效锌含量是种植区土壤肥力变异的主要控制因素。研究表明，江西井冈蜜柚种植区果园土壤各土层间肥力和区域分布均存在较大差异，改良土壤以及补充养分含量有利于提升土壤肥力。 |
| 英文摘要: |
| This study aims to explore the current situation of the regional distribution and fertility of soil in Jinggang pomelo planting area in Jiangxi Province. The topsoil(0~20 cm),subtopsoil(20~40 cm)and subsoil(40~60 cm)were collected from 110 main orchards of Jinggang pomelo in Jiangxi Province. The study carried out a systematic analysis of 12 soil fertility indexes including soil pH,organic matter and nutrient content using the ArcGIS technology,correlation analysis,and principal component analysis. The results showed that pH and contents of organic matter,alkali hydrolyzed nitrogen,available phosphorus,available potassium,available zinc,and exchangeable magnesium in the topsoil of the orchard were 4.00~7.38,7.85~32.71 g·kg-1,45.50~318.50 mg·kg-1,1.99~146.11 mg·kg-1,26.96~306.08 mg·kg-1,0.36~16.47 mg·kg-1,and 15.00~219.63 mg·kg-1,respectively. The contents of available copper and exchangeable calcium were lower than 7.91 mg·kg-1 and 658.88 mg·kg-1,respectively. Soil fertility index decreased with the increase in soil depth. Overall,the pH of topsoil was higher in the middle of the planting area and lower around,while the content of available phosphorus showed an opposite trend. The content of organic matter of topsoil in the planting area was higher in the west and lower in the east,and the content of trace elements was less in the south than that in the north. Correlation analysis showed that there was a significantly positive correlation between topsoil pH and exchangeable magnesium content,and a significantly positive correlation between exchangeable magnesium content and exchangeable calcium,available zinc,total phosphorus,and available potassium. Principal component analysis showed that the contents of soil exchangeable calcium,exchangeable magnesium,alkali hydrolyzed nitrogen,and available zinc were the dominant factors influencing soil fertility variation in the planting area. The fertility and regional distribution of orchard soil in Jinggang pomelo planting area in Jiangxi Province were quite different. Improving the acid soil,supplementing medium trace elements are conducive to upgrading soil fertility. |
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