剑河县土壤微量元素与有机质、pH值的关系研究

对剑河县12乡镇72个土壤样本的有效态微量元素、有机质及pH值进行了测定,研究了土壤中有效锌、有效铜、有效锰、有效铁、有效硼元素与有机质、pH值的关系.研究结果表明：土壤有机质与有效铁、有效铜、有效锌、有效硼含量有正相关性,与有效锰含量呈负相关性;土壤pH值与有效锰、有效铁、有效锌、有效硼含量有负相关性,与有效铜含量呈正相关性的规律.在生产过程中,应针对不同乡镇的土壤微量元素状况,应在长期施用氮磷钾肥料的基础上,可采取调节有机质和pH值等提高微量元素有效性的方法来提高农作物对微量元素的吸收,从而提高农作物产量、质量.

Relationship Between Microelements and Organic Matter,pH of Soil in Jianhe

Available microelements, organic matter and pH of 72 soil samples from 12 townships in Jianhe were determined, re- lationship between soil available Zn, available Cu, available Mn , available Fe, available B and effective organic matter, pH were studied. The results showed that soil organic matter has positive correlations with available Fe, available Cu, available Zn, available B, and negetive correlation with the available Mn; soil pH has positive correlations with available Mn, available Fe and available Zn, available B , and has positive correlation with available Cu. In the production of crop under soil microelement status in different towns , based on long--term application of NPK fertilizer, it could take measures to adjust the pH, organic matter, to improve the effective methods, in order to improve microelement uptake on crops, so as to increase yield and improve quality of crop.