1. Construction of silo The silo is required to be airtight and impermeable. At present, most animal husbandry production uses simple temporary crypts, and some use permanent brick silos. Specific construction techniques are as follows: 1 The address of the pit site is selected. The most suitable place for building a pit is the low groundwater level, high dry terrain, hard clay, good drainage, and proximity to the farm, making it easy to feed. 2 silo design. Rectangular rounded double-valve silo, 2m deep, 3m wide, 10m long, with a volume of 60m2; Rectangular garden corner crypt. It is 1.5m deep, 1.5m wide and 6m long with a volume of 16 cubic meters. The bottom of the pit and all around the thick plastic film, cover the plastic film, to seal. 2. Silage preparation 1 Preparation before silage. Before the silo is used, it must be fumigated. Silage raw materials must meet the requirements for silage, such as silage corn until the ear of corn reaches the milk ripening stage, sweet potato cane reach the thick period, and the water content is about 70%. Choose sunny or cloudy days (don't carry out silage on rainy days) and cut the cut green feed into small pieces of about 10cm with a lawnmower. The bottom of the pit is covered with plastic film, 0.2% salt is prepared according to the weight of raw materials, and 0.3% urea can also be prepared, but silage added with urea is only used for herbivores such as cattle and sheep. Prepare rice bran by 5% by weight. 2 loading. After the cellar is cleaned and disinfected, if it is a crypt, thicker plastic films are laid on the bottom of the cellar and around to prevent the clay walls from adhering to the raw materials, and the cellar opening should be covered with a thick plastic film. When filling the chopped raw materials, they should be laid out layer by layer, stepped on solids, and the cellar should be stepped on by the cow. The cellar should be compacted. When filling 0.3-0.4m, step on and press once, and apply 0.2% salt after stepping. If there is too much moisture in the raw material, or the raw material lacks sugar, 5% of rice bran can be added. If the raw material is too dry, clean water can be properly sprayed so that the raw material can reach a moisture content of 70%. The filled material will eventually be about 0.5m thicker than the pit wall. 3 cellars. After filling, the raw material should be stepped up in a timely manner to make it into a convex shape in the middle. It is covered with a thick layer of plastic film, and then it is pressurized with moist sand and sand. One layer of compaction, 0.6m thick soil on the top of the cellar, 0.4m thick soil on the top of the cellar. Make the pit roof ridge-shaped, open drains around the pit. After 5 to 7 days after cellar sealing, it must be checked at any time and it is found that there is sinking and cracking of silage material, and we must promptly cover the wet soil until it no longer sinks. 3. Attentions when opening the cellar for feeding After 40 days of silo closing, you can open the cellar to take it. It is not subject to seasonal climate restrictions. When opening the cellar, you should pay attention to: 1 If it is a double gate cement cellar, it should be opened from the double gate. Dig up the soil filled in the middle of the two gates, and then dig open the cover over the distance of more than 1m above the double gates. You can use the trolley to dig out the silage at the gate. If it is a crypt, you must use a rain canopy on the pit floor. In order to avoid rain and sun silo. (2) Generally, digging silage is digging with a four-tooth rake and digging 0.3~0.4m thick once. After the silo is dug, it must be taken one after another. It should be fed within about one month so as not to affect the quality and quality. Feeding effect. If the feed is stopped in the middle and the feed is exposed to air for too long, mildew will occur and the moldy silage cannot be fed to livestock and poultry to avoid poisoning. 8 If the silage is over-acid, add a proper amount of baking soda to mix, so that after the acidity is reduced, the livestock can still be fed. When feeding silage is started, there must be a tame feeding stage. Start feeding a little and then gradually increase the amount of feed, and wait until they are accustomed to feeding according to the planned amount.
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