火焰光度法测定土壤中速效钾、缓效钾  

Determination of available potassium and slow-release potassium in soil by flame photometer

作　　者：阳雄宇 金菲英 章超 李坤坪 闵相云 杨辉 YANG Xiongyu;JIN Feiying;ZHANG Chao;LI Kunping;MIN Xiangyun;YANG Hui(Ningbo Customs District Technology Center,Ningbo 315016,China;Ningbo Shengli Tongchuang Technology Consulting Service Co.,Ltd.,Ningbo 315100,China;Ningbo Joysun Product Testing Co.,Ltd.,Ningbo 315010,China)

机构地区：[1]宁波海关技术中心,浙江宁波315016 [2]宁波市升力同创科技咨询服务有限公司,浙江宁波315100 [3]宁波中盛产品检测有限公司,浙江宁波315010

出　　处：《磷肥与复肥》2023年第4期33-35,共3页Phosphate & Compound Fertilizer

基　　金：宁波市公益类科技计划项目(2021S196)。

摘　　要：为提高火焰光度法测定土壤中速效钾、缓效钾结果的准确度,对可能影响检测结果的相关因素进行研究。标准溶液基质、浸提方式和时间、仪器稳定性、其他实验细节等对该法检测结果有一定影响,通过使用配套标准溶液、规范浸提方法和时间、逐次标定仪器、稀释样品等方法可有效提升测量结果准确度,减少实验误差。In order to improve the accuracy of the results of available potassium and slow-release potassium in soil detected by flame photometer,the related factors that may affect the results are studied.The matrix of standard solution,extraction method and time,instrument stability,and other experimental details have a certain impact on the detection results of this method.Through the use of matching standard solution,standardizing extraction method and time,successive calibration instruments,diluting the sample can effectively improve the accuracy of determination results,reduce the experimental error.

关 键 词：火焰光度计 土壤 速效钾 缓效钾 准确度 

分 类 号：S151.93[农业科学—土壤学]