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混播比例对苜蓿青贮品质的影响
引用本文:蒋慧,于磊,马春晖. 混播比例对苜蓿青贮品质的影响[J]. 安徽农业科学, 2009, 37(3): 1020-1021
作者姓名:蒋慧  于磊  马春晖
作者单位:石河子大学动物科技学院,新疆石河子,832003;塔里木大学动物科技学院,新疆阿拉尔,843300;石河子大学动物科技学院,新疆石河子,832003;塔里木大学动物科技学院,新疆阿拉尔,843300
基金项目:国家科技支撑项目子课题,兵团科技攻关子项目
摘    要:[目的]研究不同比例的无芒雀麦与紫花苜蓿混播对青贮效果的影响。[方法]试验设5个处理,即紫花苜蓿单播、无芒雀麦单播、紫花苜蓿+无芒雀麦以50%+50%、60%+40%和70%+30%比例混播,分析各处理青贮材料的pH值、CP、NDF、ADF、乙酸、丁酸、乳酸和总酸的变化,研究无芒雀麦与紫花苜蓿不同比例混播对青贮品质的影响。[结果]与单播苜蓿相比,混播可以显著降低青材料的pH值(P〈0.01)、NH3.N/TN值(P〈0.01)和丁酸含量(P〈0.01),有利于保存青贮物的营养成分。混播还可提高青贮产物中乙酸、乳酸和总酸的含量(P〈0.01),从而提高苜蓿青贮品质。[结论]以混播处理A(苜蓿50%+无芒雀麦50%)效果最好,pH值,NH3-N/TN的含量最低,乳酸含量和综合评分最高。

关 键 词:无芒雀麦  紫花苜蓿  混播  青贮  品质

Effects of Different Mix-sowing Ratio on Alfalfa Silage Quality
Affiliation:JIANG Hui et al (College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang 832003)
Abstract:[Objective] The purpose was to study the effect of alfalfa and smooth bromegrass with different mix-sowing ratio on silage quality.[Method] In the test 5 treatments of single-sowed alfalfa or smooth bromegrass,and their mix-sowing with different ratios of 50%+50%,60%+40% and 70%+30% were set up to analyze pH,CP,NDF,ADF,acetic acid,butyric acid,lactic acid and total acid of the silage in each treatment and study the effect of alfalfa and smooth bromegrass with different mix-sowing ratio on silage quality.[Result] Compared with single-sowed alfalfa,the mix-sowing not only could decrease pH(P<0.01),NH3-N/TN value(P<0.01) and butyric acid content(P<0.01) and benefit to preserve the nutrition component,but also could increase the content of acetic acid,lactic acid,total acid of the silage product(P<0.01),thus increasing the alfalfa silage quality.[Conclusion] The mix-sowing treatment A(50% alfalfa + 50% smooth bromegrass) could get best effect,with lowest pH value and NH3-N/TN content and highest lactic acid and comprehensive score.
Keywords:Smooth bromegrass  Alfalfa  Mix-sowing  Silage  Quality
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