有机肥料中总磷和总钾含量测定样品前处理方法研究

Study on Sample Pretreatment Method for Determination of Total Phosphorus and Total Potassium Content in Organic Fertilizers

目前,国家正在大力提倡和推广使用绿色的有机肥料,用以改良和调理土壤理化性状,改善土壤的团粒结构,以防止土壤板结和蓄水保墒,从而保证农产品稳定的增产增收。同时,用以提高农产品的品质,探索更加快捷、准确、科学的有机肥料中有效成分的检验检测方法,是质量检验检测工作者的重点任务之一。鉴于目前农业农村部颁发的《有机肥料》NY/T 525—2021中有机肥料磷和钾含量测定方法中规定的样品前处理方法存在的诸多问题,经过多年研究、试验分析、优化验证,总结出实用新型“有机肥料磷和钾含量测定样品前处理方法”,均能满足NY/T 525—2021《有机肥料》中规定的磷和钾含量测定方法对精密度的要求。

Currently,the country is vigorously promoting and promoting the use of green organic fertilizers to improve and regulate soil physical and chemical properties,improve soil particle structure,prevent soil compaction and water retention,and ensure stable production and income increase of agricultural products.At the same time,it is used to improve the quality of agricultural products.Exploring faster,more accurate,and scientific methods for the inspection and detection of effective ingredients in organic fertilizers is one of the key tasks of our quality inspection and detection workers.Considering the many problems in the sample pre-treatment method specified in the"Organic Fertilizer"NY/T525-2021 standard issued by the Ministry of Agriculture and Rural Affairs,after years of research,experimental analysis,and optimization verification,we have summarized a practical new"Sample pre-treatment method for the determination of phosphorus and potassium content in organic fertilizers",Both can meet the precision requirements of the phosphorus and potassium content determination methods specified in the NY/T525-2021"Organic Fertilizer"standard.