| 孙永明,黄欠如,叶川.江西寻乌脐橙果园土壤养分变化特征研究[J].中国南方果树,2014,43(4): |
| 江西寻乌脐橙果园土壤养分变化特征研究 |
| The study on change characteristics of soil nutrient in Xunwu county of Jiangxi province |
| 投稿时间：2014-02-21 修订日期：2014-04-24 |
| DOI： |
| 中文关键词: 寻乌县 脐橙果园 pH 土壤养分 变化特征 |
| 英文关键词:Xunwu county navel orange orchard pH soil nutrient Characteristics of change |
| 基金项目:国家“十二五”科技支撑计划项目（2012BAC11B05）资助 |
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| 摘要点击次数: 2621 |
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| 中文摘要: |
| 为摸清江西寻乌县脐橙果园土壤养分状况，为该区的脐橙果园土壤改良和施肥管理提供科学依据，本研究根据脐橙种植年限、土壤类型、地形等的不同，选取了具有代表性的果园45个作为取样点，分析了其土壤pH值及养分含量，并基于R软件研究了土壤养分特征与环境因子之间的关系，结果表明：寻乌县脐橙果园土壤整体偏酸，其中强酸性（pH<4.8）和偏酸性（pH值4.8～5.5）的土壤占样本总数的91.2%，且随着种植年限的增加，土壤pH每年以0.01个单位下降；土壤有机质、速效N、速效P、速效K含量普遍偏低，其中79.7%的脐橙园土壤有机质偏低，87.8%脐橙园土壤速效N、75.6%土壤速效P、74.9%脐橙园土壤速效K处于缺乏状态；土壤养分与环境因子之间的关系为：有机质主要受土壤类型的影响，其中水稻土的有机质含量显著高于壤土，速效磷主要受种植年限的影响，种植时间越长，土壤速效磷越高；而速效钾主要受地形影响，坡地土壤速效K较平地或盆地容易流失而减少；碱解氮主要受种植年限和土壤类型的共同作用，受地形影响较小。 |
| 英文摘要: |
| The aim of the study was to provide scientific basis for soil improvement and fertilization by analyzing the status of soil nutrient contents of naval orange orchards in south Jiangxi province. 45 samples were collected based on planting age, soil type and landform in Xunwu county, which is one main naval orange production county in Jiangxi province. The soil pH and nutrient contents were analyzed, and the relationship between soil nutrient contents and environment factors was discussed. The results showed that the soil was acidic in naval orange orchards of Xunwu county, there was 91.2% soil samples were highly acidic and partial acidic, and the soil pH was declined by 0.01 unit per year of planting. Soil organic matter and available N, P, K contents were lower in Xunwu county, and 79.7% soil samples were lower at soil organic matter, 87.8% were lack at available N, 75.6% were lack at available P, and 74.9% were lack at available K. It indicated that soil organic matter was affected by soil type, and the content of soil organic matter was significantly higher in paddy soil than in other soil types. Available P was affected by planting age. The soil available P was higher in long planted orchards. And available K was affected by landform; it was lower in slope land than in other lands because available K leached faster in slope land than in flat land or basin. Available N was affected by both planting age and soil type, but it was not affected by landform. |
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