CAJ | 학술논문

为研究苜蓿的水分、添加剂对苜蓿青贮发酵品质的影响，通过对头茬苜蓿设置3个水分梯度，并添加4个水平的甲酸、丙酸、双乙酸钠，装入聚乙烯袋抽真空，发酵45 d 后进行营养分析和品质鉴定。结果表明：适宜苜蓿青贮的水分条件为55%，这一水分条件下苜蓿青贮料的 pH、氨态氮、粗纤维最低，可溶性糖、乳酸最高；而3种添加剂对青贮料的影响具体表现为：与对照组相比，能够显著降低苜蓿青贮料的 pH 和氨态氮含量(P <0.05)，并且能够很好地保存青贮料中的可溶性糖，通过对灰色关联度分析，甲酸对苜蓿青贮的影响效果最佳，丙酸次之；且55%的水分条件下添加15 mL/kg 的甲酸，青贮效果为最好。
위연구목숙적수분、첨가제대목숙청저발효품질적영향，통과대두치목숙설치3개수분제도，병첨가4개수평적갑산、병산、쌍을산납，장입취을희대추진공，발효45 d 후진행영양분석화품질감정。결과표명：괄의목숙청저적수분조건위55%，저일수분조건하목숙청저료적 pH、안태담、조섬유최저，가용성당、유산최고；이3충첨가제대청저료적영향구체표현위：여대조조상비，능구현저강저목숙청저료적 pH 화안태담함량(P <0.05)，병차능구흔호지보존청저료중적가용성당，통과대회색관련도분석，갑산대목숙청저적영향효과최가，병산차지；차55%적수분조건하첨가15 mL/kg 적갑산，청저효과위최호。
The effects of moisture and additives (formic acid,propionic acid and sodium diacetate)on fer-mentation quality of alfalfa silage were studied by testing the nutrients contents and silage quality after 45 days storage in polyethylene bags with the 3 gradients of moisture and 4 levels of additives for first harvest of alfalfa. The results showed that the optimum moisture for alfalfa silage was 55%,and the pH value,contents of ammo-nia nitrogen and crude fiber were the lowest,the contents of soluble sugar and lactic acid were the highest under such moisture condition.3 additives could significantly reduce the pH value and ammonia nitrogen content (P<0.05)and preserve the soluble sugar in silage compared with the control group.It was indicated that the effect of formic acid was the best,and propionic acid was the second through the grey correlation degree analysis.In total,the optimal conditions for alfalfa silage were 55% moisture and 15 mL/kg formic acid.