为探索发酵菌剂在巨菌草青贮中的效果，以不添加任何菌剂为对照，研究了3种发酵菌剂(EM菌液、聚能发酵剂、酶菌复合剂)对巨菌草青贮发酵品质的影响。结果表明，在巨菌草中添加微生物发酵菌剂后，一定程度上改善了青贮饲料的品质，使巨菌草青贮饲料pH降低，中性洗涤纤维减少，营养成分得到较好的保存。其中以每1 t 巨菌草揉丝原料添加2 L EM菌液处理组效果最好，不仅降低了巨菌草青贮饲料的pH，而且提高了粗蛋白含量，是3种供试发酵菌剂中的最优菌剂。

To study the effects of different silage additives on the quality of Pennisetum giganteum Z. X. Linensiling, this study, with no inoculant as the control, studied the effects of 3 fermentation inoculants(EM bacteria liquid, energy-accumulating fermentation innoculant, enzyme and bacteria compound inoculant) on the fermentation quality of Pennisetum giganteum Z. X. Linsilage. Results showed that the quality of Pennisetum giganteum Z. X. Linsilage was improved to some extent with the adding of microbial inoculants, i.e., reduced pH value, reduced NDF content and more nutrients preserved, among which 2L of EM bacteria liquid added in every 1t of kneaded Pennisetum giganteum Z. X. Lin showed optimum output, this would not only reduce the pH value of ensiling but also increase the CP content, and EM bacteria liquid was the best inoculant among the 3 additives.

S816.5

嘉峪关市科技重点研发计划“嘉峪关市紫花苜蓿品种引进及高产栽培模式研究与示范”(20-18)；兰州市科技发展计划院地合作项目“低秋眠级紫花苜蓿抗蚜高产优质选育及应用推广”(2018-4-73)。