不同浸提剂提取的土壤磷铝与油茶各器官磷铝含量的相关分析

发布时间：2018-06-25 11:28

本文选题：油茶 + 提取方法　；参考：《土壤》2017年05期

【摘要】：采用Mehlich3、ASI、Bray、DTPA、HCl等5种浸提方法测定油茶林地土壤磷、铝含量,并分析其与叶片等器官磷、铝含量的关系。结果表明:ASI法提取的磷含量最高,平均值达4.12 mg/kg,Bray法提取的磷含量最低;铝提取量依次为HCl-AlBray-AlM3-AlASI-AlDTPA-Al。5种方法提取的磷、铝含量分别存在较好的正相关关系。油茶叶片的磷含量和铝含量最高,其中铝含量达14.22 g/kg,是其他器官铝含量的11.5~28.1倍。叶片磷含量与HCl-P、叶片铝含量与HCl-Al分别呈显著正相关。该研究表明0.01 mol/L HCl提取法具有应用于同时测定土壤磷、铝含量和评价其对油茶生物有效性的可行性。
[Abstract]:The content of phosphorus and aluminum in the soil of tea field was determined by Mehlich3ABI Brayn DTPA HCl extraction method, and the relationship between them and the contents of phosphorus and aluminum in leaves was analyzed. The results showed that the highest phosphorus content was extracted by the weight ASI method, the lowest phosphorus content was obtained by the average value of 4.12 mg / kg Bray, and the content of aluminum was the highest by HCl-AlBray-AlM3-AlASI-AlDTPA-Al.5 method, and there was a good positive correlation between the aluminum content and the content of the phosphorus extracted by HCl-AlBray-AlM3-AlASI-AlDTPA-Al.5 method. The content of phosphorus and aluminum in leaves of Camellia oleifera was the highest, and the content of aluminum was 14.22 g / kg, which was 28.1 times as much as that of other organs. There was a significant positive correlation between phosphorus content and HCl-P and Al content in leaves with HCl-Al, respectively. The results show that 0.01 mol / L HCl extraction method is feasible for simultaneous determination of phosphorus and aluminum content in soil and evaluation of its bioavailability to Camellia oleifera.
【作者单位】：中南林业科技大学经济林培育与保护省部共建教育部重点实验室;经济林培育与利用湖南省高校‘2011’协同创新中心;
【基金】：国家自然科学基金项目(31400582)资助
【分类号】：S714;S794.4

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