Preliminary Research Of Fermentation Characteristic And Near-Infrared Spectrum Detection On Corn Stalk Silage

The research mainly involves two parts, the first part is to explore the different influence factors on the quality of fermented corn stalk silage, systematically to study on the contents of water, PH, Brix and alcohol concentration of corn stalk after silage through orthogonal experiment design of four factors mixed levels,seeking the optimal conditions about influences on corn stalk silage; the second part is to Establish near infrared spectrum model about the contents of water, PH, Brix and alcohol concentration of corn stalk after silage through use The technology of near infrared spectrum analysis, forecasting the unknown samples, To seek a new way for rapid determine components of corn stalk silage The results were as follows:1) the results that Analysis of variance of the indexes after corn straw silage show that, for a given level of significance α=0.05, silage time had a significant effect on water content in silage, while the orders which the effect of the moisture content in silage about The other three factors are the chopped length> dosage of acetic acid> Storage mode, and these three factors in the range of the experimental design on the effect of water content was not significant. The orders which the influence of various factors on the pH value of silage are material acetic acid> silage time> chopped length> storage mode. The effect of the dosage of acetic acid on PH was extremely significant,The effect of silage time on PH was significantly. However, the chopped length and storage mode on PH were not significantly affected by the design of the experiment. the orders which The factors to influence the size of Brix silage are silage time> dosage of acetic acid> chopped length> storage mode, the silage time had significant effects on Brix, the other three factors in the range of the experimental design of Brix was not significant; The orders The influence of various factors on the concentration of alcohol in Silage are silage time> dosage of acetic acid> chopped length> storage mode, the silage time had significant effects on the concentration of alcohol in silage, the other three factors in the range of the experimental design of the concentration of alcohol in silage was not significant. Finally, the optimal solution is A4B2C4D2, The optimum condition of corn straw silage is chopped length is 27cm, storage time 90d Within the scope of the trial design,the acetic acid added quantity was 50 ml/kg, stored in the interior.2) Respectively build the forecast model for the moisture content, PH, Brix content and alcohol concentration of Corn straw silage through the partial least squares interactive verification,It is found that the relevance of the built model is good. Especially for the pH value, the deviation between the predicted and the measured values is small. The maximum deviation is 0.58. The results show that the partial least squares full cross validation method is feasible for the establishment of the moisture content, pH, Brix and alcohol concentration of corn silage.