不同质地耕层土壤有效态微量元素含量特征
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国家自然科学基金项目"新疆渭干河流域土地利用/土地覆盖生态风险及预警研究"(41261051);新疆维吾尔自治区重点实验室"新疆干旱区湖泊环境与资源实验室"开放基金项目(XJDX0909-2010-08)


Characteristics of Topsoil Available Trace Elements with Different Textures
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    [目的] 研究不同土壤质地下耕层土壤有效态微量元素含量特征,为合理制定农田土壤施肥方案和提高土壤养分资源利用率提供依据。[方法] 以库车县不同质地耕层土壤(0-20 cm)为调查对象,采用统计方法对土壤微量元素有效态含量特征进行分析。[结果] (1)土壤有效态微量元素在壤土、砂壤土、黏土、黏壤土及砂土中含量差异显著(p<0.05),且壤土和砂壤土的有效态微量元素含量相对较高;(2)土壤微量元素有效性综合指数排列顺序依次为:砂壤土(1.51) >砂土(1.44) >黏土(1.42) >壤土(1.41) >黏壤土(1.27);(3)土壤有机质与土壤有效态微量元素均具有极其显著的相关性(p<0.01),pH值则与有效铜和有效锰相关显著(p<0.05)。[结论] 在不同土壤质地下,微量元素铁和锌含量较为缺乏,锰和铜含量则相对较为丰富,故应依据这一特性进行土地科学管理和施肥。

    Abstract:

    [Objective] To study the characteristics of topsoil available trace elements in different soil textures, for establishing reasonable fertilization scheme of farmland soil and improving the utilization rate of soil nutrient resources.[Methods] The topsoil(0-20 cm) of different soil textures in Kuqa County were sampled and the trace elements in it were measured. The characteristics of topsoil available trace elements in different soil textures were analyzed statistically.[Results] (1) The contents of available trace elements in the loam, sandy loam, clay, clay loam and sand soils were significantly different(p<0.05). And the contents of available trace elements in the loam and sandy loam were relatively higher than the contents of others; (2) The comprehensive effectiveness index of soil trace elements ranked as:sandy loam(1.51) >sand(1.44) >clay(1.42) >loam(1.41) >clay loam(1.27); (3) Soil organic matter and soil available trace elements had an extremely significant correlation (p<0.01), pH value was significantly correlated with the effective copper and manganese (p<0.05).[Conclusion] For all of the different soil textures, the contents of trace elements iron and zinc were more lack, the contents of manganese and copper were relatively more abundant. Consequently, scientific management and reasonable fertilization should be carried out according to the available trace elements in different lands.

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王雪梅,柴仲平,毛东雷.不同质地耕层土壤有效态微量元素含量特征[J].水土保持通报,2015,35(2):189-192

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  • 收稿日期:2014-03-26
  • 最后修改日期:2014-04-13
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  • 在线发布日期: 2016-04-05
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