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中国农学通报

中国农学通报 ›› 2015, Vol. 31 ›› Issue (3): 194-198.doi: 10.11924/j.issn.1000-6850.2014-2333

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

西安市土壤养分现状评价及动态变化

吕 爽,王 虎,王 安,王 涛   

  1. (西安市农业技术推广中心,西安 710061）
  • 收稿日期:2014-08-26 修回日期:2014-08-26 接受日期:2014-09-29 出版日期:2015-03-19 发布日期:2015-03-19
  • 通讯作者: 吕爽
  • 基金资助:
    西安市科技计划项目“西安市耕地质量监测与保护技术研究”(YF07098)。

Evaluation of Soil Nutrient Status and Dynamic Changes in Xi’an

Lv Shuang, Wang Hu, Wang An, Wang Tao   

  1. (Xi’an Agricultural Technology Extension Centre, Xi’an 710061)
  • Received:2014-08-26 Revised:2014-08-26 Accepted:2014-09-29 Online:2015-03-19 Published:2015-03-19

摘要： 为了全面掌握西安市耕地养分现状及动态变化，以期为今后农作物施肥推荐提供数据支持，笔者分析了2006年以来西安市采集的3万多个土壤样本养分数据，对西安市不同土类、不同土地利用方式和不同区县的土壤养分含量进行了评价，分析了20世纪80年代土壤普查至今西安市土壤养分变化动态。结果表明，西安市土壤主要养分含量均在中等或中等偏高水平，仅土壤有机质含量属于中等偏低水平。其中，不同土类主要养分含量有一定差异，但差异不明显，不同土地利用方式和不同区县土壤主要养分含量存在一定差异，且尤以微量元素含量差异明显。虽然西安市土壤有机质和微量元素含量呈逐年上升趋势，但土壤有机质含量仍然处于中等偏低水平，需要通过增施有机肥等多种途径提高土壤有机质含量。

关键词: 土壤水, 土壤水, 土壤水分常数, 土壤水分特征曲线

Abstract: The study aims to fully understand the status and change of soil nutrient in Xi’an in order to offer data support for crop fertilizer recommendations in the future. The paper analyzed nutrient data of more than 30000 soil samples collected since 2006 in Xi’an, and evaluated the soil nutrient under different counties, soil types and soil utilization ways, analyzed the dynamic changes of soil nutrient in Xi’an since 1980’s. The results showed that, the major nutrients content in soil was at or above the middle level, only the organic content in soil was at a moderate to inferior level. There was a certain difference in major nutrient contents of different soil types, but the difference was not obvious. In different counties and under different soil utilization ways, there was difference of the major nutrients content, particularly obvious of microelement contents. Although the content of organic matters and microelements in soil appeared to be on the rise year by year, organic content in soil was at a moderate to inferior level, requiring measures such as increasing the organic fertilizer application to improve organic matter content in soil.