一、前言目前国内所使用的水分测定方法和仪器的种类很多,其中用标准法测定粮食中的含水率是较好的方法之一,即将10克被测粮食放在105℃的烘箱中烘干8小时,取出后称量,计算失去水分的百分数,即为该种粮食的含水率。此法被认为是精确的水分测定法。但该法需用时间长,耗电量大。为了克服上述缺点,人们又研制了快速干燥法(即隧道法)测水分,将粮食放在仪器的隧道中 I. Introduction At present, there are many types of water measuring methods and instruments used in China. One of the better methods is to determine the water content in food by the standard method. That is to say, 10 g of the tested food is dried in an oven at 105 ° C. 8 hours, taken out after weighing, calculate the percentage of water loss, is the kind of food moisture content. This method is considered accurate moisture determination. But the law takes a long time, power consumption. In order to overcome these shortcomings, people have also developed a rapid drying method (that is, tunnel method) to measure the water, the food in the tunnel of the instrument