the nutrient potassium of water-soaking solution for two kinds of coatedcompound fertilizer was determined by atomic absorption spectrophotometry, in which the recovery rate was 107.89 % for 6 samples and the correct, sensitive and quick potassium is provided for the formula design and release feature research of coated compound fertilizer 摘要用火焰原子吸收法,對(duì)兩種復(fù)合肥料及其包膜肥料水溶出液中的養(yǎng)分鉀進(jìn)行了測(cè)定,測(cè)試中的6個(gè)樣品平均加樣回收率為107.89%,為包膜復(fù)合肥料配方設(shè)計(jì)和釋放特性研究提供了準(zhǔn)確、靈敏、快速的定鉀方法。