The water in fertilizer by vacuum oven method were tested, and sources of uncertainty measurement of water were analysed and evaluated.

利用真空烘箱重量法测定了复混肥料中的水分，并对水分的测量不确定度的来源进行了分析和评定。

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Determination of free water for compound fertilizers is usually applied Karl Fischer method or vacuum oven method, a different extraction solvent can selected as Karl Frscher method is applied.

复混肥料中游离水含量的测定方法通常采用卡尔·费休法或真空烘箱法，用卡尔·费休法测定时又可选用不同的萃取剂。

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