| 复合肥料中有效磷含量测定的能力验证研究 |
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| 引用本文： | 田野,刘善江,陈益山.复合肥料中有效磷含量测定的能力验证研究[J].中国土壤与肥料,2020(3):172-175. |
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| 作者姓名： | 田野 刘善江 陈益山 |
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| 作者单位： | 北京市农林科学院植物营养与资源研究所，北京 100097 |
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| 基金项目： | 基金项目:北京市农林科学院科技创新能力专项:农产品质量与农田环境基础数据平台建设(KJCX 20200302)；土壤与水资源长期定位监测数据平台建设(KJCX20190302)。 |
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| 摘 要： | 为提高北京市周边复合肥料生产企业出厂检验能力,提高复合肥料产品质量,开展本次复合肥料中有效磷含量测定的能力验证研究。参与本次能力验证研究的企业共18家,能力验证样品通过均匀性分析和稳定性分析,有效磷含量测定结果采用频率分布统计和稳健Z比分数统计方法进行数据分析研究。研究结果表明,有效磷含量测定结果集中分布在中位值17.08附近,无明显偏离,分布近似正态分布;测定结果的|Z|均小于2,结果满意率为100%。研究结果说明18家复合肥料获证企业的实验室对复合肥料中有效磷含量测定的检验能力均能符合国家标准GB/T 8573-2010《复混肥料中有效磷含量的测定》的规定要求,目前北京市周边复合肥料获证企业的实验室对复合肥料中有效磷含量的检测能力总体水平较好。
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| 关 键 词： | 能力验证 有效磷 复合肥料 |
| 收稿时间： | 2019/5/16 0:00:00 |
Study on proficiency testing of determination of available phosphorus content for compound fertilizer |
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| TIANYe,LIU Shan -jiang,CHEN Yi -shan.Study on proficiency testing of determination of available phosphorus content for compound fertilizer[J].Soil and Fertilizer Sciences in China,2020(3):172-175. |
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| Authors: | TIANYe LIU Shan -jiang CHEN Yi -shan |
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| Institution: | (Institute of Plant Nutrition and Resource,Beijing Academy of Agriculture and Forest Science,Beijing 100097) |
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| Abstract: | In order to improve the factory inspection ability of compound fertilizer production enterprises around Beijing of China and improve the quality of compound fertilizer products,the proficiency testing of determination of available phosphorus content for compound fertilizer is carried out.18 enterprises participate in the proficiency testing,samples used for proficiency testing are passed the homogeneity analysis and stability analysis,the methods of frequency distribution statistics and robust statistics“Z-score”are used to analyse the results of available phosphorus content.It is shown that the results of available phosphorus content are concentrated in the vicinity of the median value 17.08,with no obvious deviation,and the distribution approximates normal distribution.The|Z|of the results are less than 2,and the satisfactory rate is 100%.The results show that the laboratories of 18 certified enterprises can meet the requirements of GB/T 8573-2010 for the determination of available phosphorus content for compound fertilizers.The overall level of laboratory detection ability of available phosphorus content for compound fertilizers is satisfactory in certified enterprises of compound fertilizer around Beijing of China. |
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| Keywords: | proficiency testing available phosphorus compound fertilizer |
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