摘要：The purpose of this study was to find the light reflection material characteristics of the delinted cottonseed and its relationship with the germination.To this end,selecting cottonseeds of different species and varieties as objects of study,the spectrometer approach was adopted to collect the spectral reflection material characteristic curve of the cottonseeds,and the germination test was also carried out on the cottonseeds strictly in accordance with national standards.Thus,the results obtained in this study include that the spectral material characteristics of different cottonseed varieties were analysed to obtain the sensitive spectrum and material characteristic wavelengths of cottonseeds; the polynomial fitting and stepwise regression analysis were used to establish the light reflection material characteristics estimation model of the cottonseeds,which was also validated.The results showed that the spectral reflectance of the four delinted cottonseed varieties such as Xinluzao 57,Xinluzhong 66,Zhongmian 86 and Zhongmian 641 were related to the seed species,and within a certain wavelength range,the reflectance of different species differs obviously; the reflectance of the four cottonseed species and their relationship with the germination time were also obtained,and by fitting and stepwise regression models,the coefficients R2 of the four species are 0.8892,0.9476,0.9173 and 0.9287 respectively; finally,the four cotton species were tested about the germination time,to conclude that the accuracy rate for the 3,6,9,and 12 days is up to 94%.The impacts of the obtained results are that this study provides a theoretical basis for the rapid and efficient sorting of delinted cottonseeds based on the spectral characteristics model.
