Research and Development of soil available phosphorus method
This article provides a review of soil available phosphorus pretreatment and determination methods:Bray-1 meth-od is suitable for the extraction of available phosphorus in acidic soil,while Olsen method is suitable for the extraction of available phosphorus in neutral and calcareous soil.The Mehlich-3 method and ASI method use a combined extraction agent of Bray-1 method and Olsen method,which expands the applicability of the method and has broad application pros-pects.The molybdenum antimony colorimetric method is the earliest and most widely used,but its inspection range is nar-row and the operation is cumbersome.ICP-OES and ICP-MS,with their low detection limit,high accuracy,good precision,wide linear dynamic range,and high determination efficiency,are expected to become the main testing methods for effective phosphorus.
Soil available phosphorusBray-1 methodOlsen methodMehlich-3 methodASI method
万方数据
维普
