Silage containing sorgo and alfalfa and preparation method thereof

The invention relates to the technical field of silage, in particular to silage containing sorgo and alfalfa and a preparation method thereof. The silage provided by the present invention comprises the following components in percentage by weight: 60-70% of alfalfa, 15-20% of straw, 10-40% of sorgo and 2-15% of decoction dregs. The decoction dregs contain 2-5 parts of dangshen roots, 4-8 parts ofmilk-vetch roots, 1-4 parts of Chinese angelica and 6-9 parts of Chinese magnoliavine fruits. The method for preparing silage provided by the invention comprises the following steps: weighing and airing the alfalfa, the straw and the sorgo, performing segmenting and mixing, adding a feed starter and water, performing fermentation at room temperature for 10-15 days, adding the decoction dregs whichare ground into fine powder, and performing uniform mixing. Compared with conventional silage, the silage provided by the invention has a longer shelf life, is beneficial to the utilization of decoction dreg waste, and can al