结合五莲烟区烟叶质量状况,从生态、栽培措施以及采收烘烤技术等方面对五莲烟叶质量存在的问题及改进措施进行了初步探讨,提出以下具体措施:①合理规划种植区域,优化布局,为烟叶生产提供良好的生态环境;②选用优质品种,彰显风格特色;③施行合理的土壤改良措施,保持土壤肥活力;榆通过调整移栽方式和确定合理的移栽期,调节烟叶适时生长;虞控氮增钾,合理密植,优化烟株个体发育和群体结构;愚合理使用农药,科学防治病虫害;舆成熟采收,科学烘烤,提高鲜烟素质和烘烤可塑性。
The NIR spectrum data of 400 aged flue-cured tobacco samples were obtained by FT-NIR spectrometry,and the contents of starch,polyphenols and pigments in the samples were determined with chemical analysis.The NIR prediction models were established by fitting the spectrum data to the chemical analysis data of 300 samples with partial least square(PLS),and the models were cross verified within the data set and the other 100 samples not involved in the establishment of the models.The results showed that the coefficients of determination(R2) of the models for starch,polyphenols and pigments were 97.64%,86.97%,87.08%, and their root mean squares error of cross validation(RMSECV) were 0.338,0.283,0.011,respectively.There was no significant difference between prediction values and chemical analysis values,and their relative standard deviations(RSD) were all below 5%.The FT-NIR spectrometry is fit for the rapid determination of pigment,starch,polyphenol in batch of aged tobacco samples.