[1] 中华人民共和国农业部.全国农作物秸秆资源调查与评价报告[J].农业工程技术·新能源产业, 2011(2):3-5.
[2] HENDRIKS A T W M, ZEEMAN G.Pretreatments to enhance the digestibility of lignocellulosic biomass[J].Bioresource Technology, 2009, 100(1):10-18.

[3] KIM T H, KIM J S, SUNWOO C S, et al.Pretreatment of corn stover by aqueous ammonia[J].Bioresource Technology, 2003, 90(1):39-47.

[4] 赵丽华.收获和贮存时间对玉米秸营养物质产量和营养价值的影响[D].硕士学位论文.北京:中国农业大学, 2004:17-28.
[5] GARCIA RODRIGUEZ A, MANDALUNIZ N, FLORES G, et al.A gas production technique as a tool to predict organic matter digestibility of grass and maize silage[J].Animal Feed Science and Technology, 2005, 123/124:267-276.
[6] LIU L, YE X P, WOMAC A R, et al.Variability of biomass chemical composition and rapid analysis using FT-NIR techniques[J].Carbohydrate Polymers, 2010, 81(4):820-829.

[7] PORDESIMO L O, HAMES B R, SOKHANSANJ S, et al.Variation in corn stover composition and energy content with crop maturity[J].Biomass and Bioenergy, 2005, 28(4):366-374.

[8] DE BOEVER J L, AERTS J M, VANACKER J M, et al.Evaluation of the nutritive value of maize silages using a gas production technique[J].Animal Feed Science and Technology, 2005, 123/124:255-265.
[9] TANG S X, SHENG L X, TAN Z L, et al.Morphological fractions and
in vitro fermentation characteristics of five endosperm types maize stover harvested at two maturity stages[J].Journal of Animal and Feed Sciences, 2009, 18(3):582-598.
[10] ARIAS S, DI MARCO O N, AELLO M S.Effects of hybrid and maturity on maize stover ruminal degradability in cattle fed different diets[J].Asian-Australasian Journal of Animal Sciences, 2003, 16(11):1619-1624.
[11] AOAC International.Official methods of analysis[S].17th ed.Gaithersburg, M.D.:AOAC International, 2000.
[12] VAN SOEST P J, ROBERTSON J B, LEWIS B A.Methods for dietary fiber, neutral detergent fiber, and nonstarch polysaccharides in relation to animal nutrition[J].Journal of Dairy Science, 1991, 74(10):3583-3597.

[13] LICITRA G, HERNANDEZ T M, VAN SOEST P J.Standardization of procedures for nitrogen fractionation of ruminant feeds[J].Animal Feed Science and Technology, 1996, 57(4):347-358.

[14] MENKE K H, STEINGASS H.Estimation of the energetic feed value obtained from chemical analysis and
in vitro gas production using rumen fluid[J].Animal Research Development, 1988, 28:7-55.
[15] BRODERICK G A, KANG J H.Automated simultaneous determination of ammonia and total amino acids in ruminal fluids and
in vitro media[J].Journal of Dairy Science, 1980, 63(1):64-75.

[16] ERWIN E S, MARCO G J, EMERY E M.Volatile fatty acid analysis of blood and rumen fluid by gas chromatography[J].Dairy Science, 1961, 44(9):1768-1771.

[17] WEISS W P.Predicting energy values of feeds[J].Journal of Dairy Science, 1993, 76(6):1802-1811.

[18] NRC.Nutrient requirements of beef cattle[S].7th Rev ed.Washington, D.C.:National Academy Press, 2000.
[19] NRC.Nutrient requirements of dairy cattle[S].7th Rev ed.Washington, D.C.:National Academy Press, 2001.
[20] MENKE K H, RAAB L, SALEWSKI A, et al.The estimation of the digestibility and metabolizable energy content of ruminant feedingstuffs from the gas production when they are incubated with rumen liquor
in vitro[J].Journal of Agricultural Science, 1979, 93:217-222.
[21] CHENOST M, AUFRRE J, MACHEBOEUF D.The gas-test technique as a tool for predicting the energetic value of forage plants[J].Animal Research, 2001, 50(5):349-364.

[22] WILLIAMS B A.Cumulative gas-production techniques for forage evaluation[M]//GIVENS D I, OWEN E, AXFORD R F E, et al.Forage evaluation in ruminant nutrition.New York:CABI Publishing, 2000:189-213.
[23] NRC.Nutrient requirements of beef cattle[S].6th Rev ed.Washington, D.C.:National Academy Press, 1984.
[24] 中华人民共和国农业部.NY/T 815—2004, 肉牛饲养标准[S].北京:中国标准出版社, 2004.