Method to stably develop effective phosphoric acid content of solution leached by Lancaster method

摘要

The present invention relates to a method for stabilizing color development in the Lancaster method, which is a national standard method for analyzing soil effective phosphorus, to reduce measurement errors, and to measure soil effective phosphorus quickly. It is simple and saves time, and because the amount of reagent is small, the amount of reagent can be saved, and the amount of waste liquid generated after the analysis can be reduced, and the waste water has the effect of removing the nitrogen content, which is a water pollutant.