草原与草坪2024,Vol.44Issue(1) :131-137.DOI:10.13817/j.cnki.cyycp.2024.01.015

混播比例对拉巴豆/青贮玉米混合青贮发酵质量及有氧稳定性的影响

Effect of mixed sowing ratio on the fermentation quality and aerobic stability of mixed silage of laba bean and silage maize

柯强 王斌 王腾飞 倪旺 冯琴 兰剑
草原与草坪2024,Vol.44Issue(1) :131-137.DOI:10.13817/j.cnki.cyycp.2024.01.015

混播比例对拉巴豆/青贮玉米混合青贮发酵质量及有氧稳定性的影响

Effect of mixed sowing ratio on the fermentation quality and aerobic stability of mixed silage of laba bean and silage maize

柯强 1王斌 1王腾飞 1倪旺 1冯琴 1兰剑1
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作者信息

  • 1. 宁夏大学农学院,宁夏 银川 750021;宁夏草牧业工程技术研究中心,宁夏 银川 750021
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摘要

[目的]探究拉巴豆(Dolichos lablab)与青贮玉米(Zea mays)混播对混合饲草青贮质量及有氧稳定性的影响.[方法]以青贮玉米单播后青贮为对照(CK),设置青贮玉米与拉巴豆 1∶1(D1)、1∶2(D2)、1∶3(D3)、1∶4(D4)4个混播比例进行混合青贮,室温发酵60 d后测定各处理营养成分、发酵质量和有氧稳定性.[结果]青贮玉米与拉巴豆混播的混合饲草青贮后,干物质损失率和粗蛋白含量均显著升高(P<0.05),可溶性碳水化合物显著降低(P<0.05);CK pH值显著低于其他处理(P<0.05);D2处理乳酸含量最高,显著高于CK处理(P<0.05);D1 处理乙酸含量最高,显著高于CK青贮(P<0.05),与其他处理组差异不显著(P>0.05).[结论]青贮玉米/拉巴豆混合青贮能有效延长有氧稳定性时间,在暴露环境下不易发生二次发酵.综合有氧稳定时间和发酵质量,建议青贮玉米与拉巴豆的混播比例为1∶1时混合青贮较适宜.

Abstract

[Objective]In order to explore the effects of mixed sowing of Dolichos lablab and silage corn(Zea mays)on the quality and aerobic stability of mixed forage silage.[Method]The silage of silage corn after single sow-ing was used as the control(CK).Four mixed sowing ratios of silage corn and Zea mays were set as 1∶1(D1),1∶2(D2),1∶3(D3)and 1∶4(D4).After 60 days of fermentation at room temperature,the nutrients,fermentation quality and aerobic stability of each treatment were determined.[Result]The results showed that the dry matter loss rate and crude protein content of silage corn mixed with Laba bean increased significantly(P<0.05).This study demon-strated that silage corn/Laba bean mixed silage could effectively improve the aerobic stability time,and secondary fer-mentation was less likely to occur in the exposed environment.[Conclusion]Based on aerobic stability time and fer-mentation quality,we suggest that the mixed silage of corn and soybean is more suitable when the mixed ratio is 1∶1.

关键词

青贮玉米/拉巴豆/混播比例/有氧稳定性/青贮质量

Key words

silage corn/laba beans/proportion of mixed sowing/aerobic stability/ailage quality

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基金项目

宁夏抗旱节水优质饲草新品种选育与良种繁育项目(2019NYYZ0402)

"一年两熟"人工草地可持续生产模式研究与示范项目(2021BBF02001)

宁夏高等学校一流学科建设(草学学科)项目(NXYLXK2017A01)

出版年

2024
草原与草坪
中国草学会 甘肃农业大学

草原与草坪

CSTPCD
影响因子:0.686
ISSN:1009-5500
参考文献量32
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