2000年4月1日国家制定颁布了新的国家粮食质量标准，对原标准作了较大的修订和改进，各项粮食质量指标在原标准的基础上更细化、更规范、更完善，尤其是新增加的稻谷整精米率指标对粮食质量的影响起非常重要。 新标准GB1350-1999中对整精米率定义为：糙米碾磨成精度为国家标 On April 1, 2000, the state enacted and promulgated a new national food quality standard, which greatly revised and improved the original standard. All the food quality indicators were further refined, standardized and perfected on the basis of the original standard, especially It is very important that the newly added indicators of the rate of rice milled grains have an impact on the quality of food. The new standard GB1350-1999 in the rate of milled rice is defined as: the accuracy of rice milling into a national standard