Sweet potato vines are rich in crude protein, crude fat, and crude fiber, and are excellent feed for livestock. The sweet potato vine plastic bag silage has the advantages of simple operation, low cost, pollution prevention, good quality, and easy replacement. Its silage technology must master the following points. First, potato vine harvest processing. In the first frost, choose sunny days to harvest the unwashed potato vines, wash the sediment immediately, and dry it on a clean cement screed. Then cut into pieces of 1 to 1.5 centimeters, and then properly dry, you can store. Second, the production of silage bags. 0.8 to 1 mm thick polyethylene fabric bag-shaped film is used. Each silage of 250 to 300 kilograms of sweet potato vines is packed with a silage bag. The specification is 1 meter wide (double width) and 2 meters long. First use a solid plastic tape. Stuck firmly, do not use needles or sewing machine. Check the bag for air leakage. If there is trachoma, it must be filled with two layers of transparent tape. Third, silage necessary conditions. 1. When filling the green material, the air in the bag must be drained as much as possible to keep the bag free of oxygen. 2. The moisture content of the silage should be appropriate, with 70% being preferred. 3. The sugar content of silage should not be less than 1% to 2%, and 4% to 7% of bran should be added. If necessary, 4% of the sugar industry can be added. Fourth, pay attention to matters. 1. Bagging should be completed on the same day and at the latest by the second day. When filling, try to drain the air between the materials. 2. The silage bag is loaded and stored in place. Do not move so as not to damage the plastic bag. 3. Store the silage bag where you want to avoid direct sunlight and rain, prevent plastic bags aging, and prevent rat damage. 4. During the silage period, the bag must not be opened and the bag should not be deflated. 5. Silage is completed after 40 days of fermentation, and can be opened for feeding pigs, cattle and sheep. Along with the feeding, take the material immediately after the bag tightly to prevent spoilage.
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