ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

Corn stover contains abundant nutrients for animals and it is the main source of roughage for large domestic animals. To guarantee the quality of feed, the online measurement of the nutrient content of corn stover is essential when it is being used as a roughage feed or a raw material for silage. In the present study, the online determination of moisture, crude protein (CP), acid detergent fiber (ADF) and watersoluble carbohydrate (WSC) of corn stover was investigated using near infrared spectroscopy (NIRS) operating over a conveyor belt moving at 20cm/s. The distance between the sample surface and the scanning window was 100mm. The 217 corn stover samples, collected from three provinces of China, were crushed to not more than 5cm for spectral analysis. The relative standard deviation (RSD) and ratio of standard error of performance to standard deviation (RPD) of the models developed for moisture, CP, ADF and WSC were 9.03% and 1.97, 11.36% and 2.31, 3.75% and 2.02 and 16.18% and 3.61, respectively. The results showed that it was feasible to determine the moisture, CP, ADF and WSC contents of corn stover using on-line NIRS, which would help raise the efficiency of nutrient measurement and thus guarantee the quality of feed. The sensitive bands of the models were investigated, which could help to simplify the models and thus reduce the cost of the specific spectrometers for practical application.