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基于近红外光谱的玉米秸秆捆包青贮饲料的品质测定研究
引用本文:李宇萌,杨中平.基于近红外光谱的玉米秸秆捆包青贮饲料的品质测定研究[J].安徽农业科学,2010,38(7):3503-3505.
作者姓名:李宇萌  杨中平
作者单位:西北农林科技大学机械与电子工程学院,陕西杨凌,712100
摘    要:以112个玉米秸秆整杆捆包方式青贮的饲料为试验材料,利用近红外漫反射光谱技术,结合偏最小二乘法,对捆包青贮饲料的pH值、粗蛋白(CP)、粗灰分(CA)、干物质(DM)和可溶性碳水化合物(WSC)含量进行测定和分析。结果表明,pH值、CP、CA和DM的校正模型决定系数(R^2)以及外部验证决定系数R2V均大于0.85,且pH值、CA和CP的相对分析误差RPD(SD/SECV)均大于2.5。WSC的RPD大于2,外部验证决定系数RV^2为0.72。近红外漫反射法可以很好地测定捆包青贮样品的pH值、CA和CP含量。测定DM含量时,需进一步扩大样品含量变异范围。该方法也可对WSC含量进行粗略估测,但精度有待提高。

关 键 词:近红外漫反射光谱  捆包青贮  玉米秸秆  品质测定  校正模型

Determination of Trussed-Ensiled Maize Stalk Quality Traits Based on Near Infrared Diffuse Reflectance Spectroscopy(NIDRS)
LI Yu-meng et al.Determination of Trussed-Ensiled Maize Stalk Quality Traits Based on Near Infrared Diffuse Reflectance Spectroscopy(NIDRS)[J].Journal of Anhui Agricultural Sciences,2010,38(7):3503-3505.
Authors:LI Yu-meng
Institution:College of Mechanical and Eelectronical Engineering;Northwest A & F University;Yangling;Shaanxi 712100
Abstract:The contents of chemical composition including crudeprotein(CP),crude ash(CA),drg matter(DM)and water soluble carbohydrate(WSC)and pH value in 112 Trussed-Ensiled Maize Stalk samples were determined and anaryzed by Near-infrared reflectance spectroscopy(NIRS) and partial least-squares(PLS).The results showed that the correlation coefficients of calibration(R2) and the correlation coefficient of validation(R2V)of pH value,CP,CA and DM were all more than 0.85.The RPD(SD/SECV) of pH,CP and CA were all more tha...
Keywords:Near infrared reflectance spectrum(NIRS)  Trussed-ensiled  Maize stalk  Quality trait  Calibration model
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