水浸悬浮法测定玉米水分的研究

Study on the moisture of maize tested by waterlog suspension method

常规玉米水分主要依据GB5009.3规定的直接干燥法进行测定,高水分玉米的水分测定一般采用两次烘干法(GB/T20264—2006)。这两种方法皆耗时长,与之相比,用水浸悬浮法测定玉米水分更简便、快速。通过F检验法可知,水浸悬浮法与直接干燥法测定干玉米水分时,两种方法的精密度不一致;水浸悬浮法与两次烘干法测定湿玉米水分时,两种方法的精密度一致。由此可见,水浸悬浮法在测定高水分玉米的水分时优势更为显著。

The moisture of Conventional maizewas tested by direct drying method in standard of GB 5009.3.And the moisture of high-moisture maize was tested by drying method by two steps of GB/T 20264-2006.Both needed to take a long time.Comparing to those,it was simpler and faster that the moisture of maize was tested by Waterlog suspension method.It was obtained by the F test method that the precision of the two methods was inconsistent whenthe moisture of dry maize was tested by Waterlog suspension method and direct drying method.But the precision of the two methods was consistent when the moisture of wet maize was tested by Waterlog suspension method and drying method by two steps.It could be seen that the water-immersion suspension method had more advantages in determining the moisture of high-moisture maize.