闫亚丹,蒋中波,徐福利,汪有科,邹诚.黄土高原坡地密植枣园土壤质地与肥力状况分析[J].干旱地区农业研究,2009,27(3):174~178
黄土高原坡地密植枣园土壤质地与肥力状况分析
Analysis of the soil texture and fertility status of hillside close-planting jujube field on the Loess Plateau
  
DOI：10.7606/j.issn.1000-7601.2009.03.32
中文关键词:  坡地  枣园  土壤质地  土壤肥力  黄土高原
英文关键词:hillside field  jujube  soil texture  soil fertility  Loess Plateau
基金项目:国家科技支撑计划项目“陕西半干旱区山地特色果品综合节水技术研究与示范”(2007BAD88B05)
作者单位
闫亚丹 Institute of Soil and Water Conservation Chinese Academy of Sciences and Ministry of Water Resource, Yangling, Shaanxi 712100, China；Graduate University of Chinese Academy of Sciences, Beijing 100049, China 
蒋中波 Northwest A ＆ F University, Yangling, Shaanxi 712100, China 
徐福利 Institute of Soil and Water Conservation Chinese Academy of Sciences and Ministry of Water Resource, Yangling, Shaanxi 712100, China；Northwest A ＆ F University, Yangling, Shaanxi 712100, China 
汪有科 Institute of Soil and Water Conservation Chinese Academy of Sciences and Ministry of Water Resource, Yangling, Shaanxi 712100, China；Northwest A ＆ F University, Yangling, Shaanxi 712100, China 
邹诚 Institute of Soil and Water Conservation Chinese Academy of Sciences and Ministry of Water Resource, Yangling, Shaanxi 712100, China；Graduate University of Chinese Academy of Sciences, Beijing 100049, China 
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中文摘要:
      采用田间取样与实验室分析相结合的方法,研究了黄土高原坡地密植枣园土壤质地与肥力状况。结果表明,坡地枣园土壤肥力低,氮、磷严重缺乏,钾相对丰富,土壤属于砂壤土,通气性强,保肥、保水性差。0~60 cm土壤有机质含量为1.687~5.002 mg·kg-1;全氮为0.072~0.316 g·kg-1;硝酸盐为2.325~16.846 g·kg-1;铵态氮为1.187~2.146 g·kg-1,速效磷为0.270~2.480 mg·kg-1,速效钾为51.91~69.1 mg·kg-1,并且含量均随剖面向下减少。颗粒组成大部分为粉砂粒,含量一般在65.75%~68.98%;随有机质含量升高,0.250.05 mm微团聚体数量呈上升趋势,二者为正相关;<0.05 mm微团聚体含量则逐渐下降,二者呈负相关。黄土高原坡地密植枣园土壤肥力总体水平很低。除了速效钾为中等级外,有机质、全氮、碱解氮、速效磷均为很低等级。
英文摘要:
      Study was made on the soil texture and fertility status of hillside close-planting jujube field on the Loess Plateau.The results displayed: The soil appears low-fertility due to serious lack of N, P but K;The soil is sandy loam that has good soil aeration but bad water and nutrient retention.The content of soil nutrients of 0～60 cm is as follows: organic matter: 1.687～5.002 mg·kg-1, total N: 0.072～0.316 g·kg-1, NO-3-N: 2.325～16.846 g·kg-1, NH+4-N: 1.187～2.146 g·kg-1, avail-P: 0.270～2.480 mg·kg-1, avail-K: 51.9～169.1 mg·kg-1. All of them above decrease gradually with the decreasing of soil profile.The soil particle is silt particle and the content is generally 65.75%～68.98%.With the increasing of content of organic matters, the 0.25～0.05 mm microaggregate reduced but <0.05 mm microaggregate increased.The fertility status of jujube close planting in hillside field on the Loess Plateau was on the low side as a whole.All the nutrients content was lower except avail-K was on a middle grade.
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