The influence of sample annum and the distribution of sample component on NIR veracity was studied with homemade grating diffuse NIR instrument using Yunnan flue-cured tobacco.

• 以云南优质烤烟为实验材料,在国产光栅漫反射型近红外仪器上,比较研究了不同年份样品建模、不同化学值分布建模对近红外检测结果的影响。