湖北西部山区土壤养分元素有效态研究——以建始县业州镇为例
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摘要
通过1∶5万表层土壤地球化学调查,对建始县业州镇表层土壤中12种养分元素的全量和有效量进行研究,结果表明研究区内土壤养分总体丰富,但也存在分布不均匀、变异性较大的特点,其中最显著的为有效钼、有效硒、有效铁、有效磷等在区域上形成养分富足和养分缺乏的区块。研究区内土壤养分有效量与其土壤的成土母质及土壤类型关系并无明显相关规律。土壤中有钼、硒、磷少数元素可以较好地由全量表征土壤养分的活性,其中钼元素的有效态量与全量呈显著的强相关;锰、锌基本可以由全量反映其有效性;铜的全量与有效铜以其弱相关性表明只可勉强拟合;而铁、硅、钙、镁、钾都不可用全量来真实地反映区内土壤内的有效态量。通过对土壤养分元素有效量与其土壤酸碱度、有机质含量的关系发现多数元素有效度明显受土壤pH值的影响,pH值越大,锰、铁、锌、铜、磷、钙等元素活性越弱。由于山区土壤有机质分布空间变异性强,不同海拔的有机质含量也存在较大差异,因此研究区内有机质含量与土壤中元素有效量的关系并非简单的线性相关关系。
Through the 1∶ 50 thousand soil geochemical survey of Jianshi County in the surface soil,including 12 breeding research elements of the total and effective amount of the study area,the soil nutrient is abundant,but there are also uneven distribution and variability,the most significant for Mo effective,selenium,iron,phosphorus in the effective area is formed on the lack of nutrients and nutrient rich patches. Moreover,there was no obvious correlation between soil nutrient availability and soil parent material and soil type in the study area. Molybdenum,selenium,phosphorus in soil by a few elements can be full characterization of soil nutrient activity,which available Mo showed a significant amount of strong correlation with the full amount of manganese and zinc,can be full reflect its effectiveness; and the total content of copper with its weak correlation indicates that only barely fit; while iron,silicon,calcium,magnesium and potassium are not available to reflect the full amount of available amount of soil within the area. The effective amount of nutrient elements in soil and soil pH,organic matter content of the relationship found to affect most of the elements availability significantly affected by soil pH value,pH value is larger,manganese and iron,zinc,copper,phosphorus,calcium and other elements of activity is weaker. Because the mountain spatial variability of soil organic matter distribution,organic matter content of different altitudes are quite different,so in the research area of organic matter content and soil elements in an effective amount of the relationship is not a simple linear relationship.
Through the 1∶ 50 thousand soil geochemical survey of Jianshi County in the surface soil,including 12 breeding research elements of the total and effective amount of the study area,the soil nutrient is abundant,but there are also uneven distribution and variability,the most significant for Mo effective,selenium,iron,phosphorus in the effective area is formed on the lack of nutrients and nutrient rich patches. Moreover,there was no obvious correlation between soil nutrient availability and soil parent material and soil type in the study area. Molybdenum,selenium,phosphorus in soil by a few elements can be full characterization of soil nutrient activity,which available Mo showed a significant amount of strong correlation with the full amount of manganese and zinc,can be full reflect its effectiveness; and the total content of copper with its weak correlation indicates that only barely fit; while iron,silicon,calcium,magnesium and potassium are not available to reflect the full amount of available amount of soil within the area. The effective amount of nutrient elements in soil and soil pH,organic matter content of the relationship found to affect most of the elements availability significantly affected by soil pH value,pH value is larger,manganese and iron,zinc,copper,phosphorus,calcium and other elements of activity is weaker. Because the mountain spatial variability of soil organic matter distribution,organic matter content of different altitudes are quite different,so in the research area of organic matter content and soil elements in an effective amount of the relationship is not a simple linear relationship.
引文
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[10]冷旭勇,张宗元,刘丰武,等.泰莱盆地土壤有机质含量及p H值对微量元素有效性的影响分析[J].山东国土资源,2015(4):46-49.
[2]周国华,吴小勇,周建华,等.浙北地区土壤元素有效量及其影响因素研究[J].第四纪研究,2005,25(3):316-322.
[3]周小娟,张嫣,祝莉玲,等.武汉市侏儒—消泗地区农田系统中硒的分布特征及有效性研究[J].地质科技情报,2016(4):158-163.
[4]向万胜,李卫红.湘北丘岗地区红壤和水稻土微量元素的有效性研究[J].土壤通报,2001,32(1):44-46.
[5]赵艺,施泽明,师刚强.土壤p H值与土壤养分有效态关系探讨——以内江市白马镇为例[J].四川环境,2009,28(6):81-83.
[6]林毅,梁颁捷,朱其清.三明烟区土壤p H值与土壤有效养分的相关性[J].烟草科技,2003(6):35-37.
[7]夏增禄.土壤元素背景值及其研究方法[M].北京:气象出版社,1987:57.
[8]高文文,刘景双,王洋.有机质对冻融黑土重金属Zn赋存形态的影响[J].中国生态农业学报,2010,18(1):147-151.
[9]章程,谢运球,吕勇,等.广西弄拉峰丛山区土壤有机质与微量营养元素有效态[J].中国岩溶,2006,25(1):63-66.
[10]冷旭勇,张宗元,刘丰武,等.泰莱盆地土壤有机质含量及p H值对微量元素有效性的影响分析[J].山东国土资源,2015(4):46-49.