First, the raw material moisture control
Various crop straws such as straw, corn stalks, and wheat straw can be used as ammoniated raw materials, and the moisture should be controlled below 13%.
Second, site selection and construction (pool)
The ammoniated strontium (pool) should be built near the convenient barn (better indoors), avoiding the human and animal activity area, and built as much as possible in the place where the terrain is high, the soil is hard and dry, and the leeward is sunny. After selecting the address, according to the amount of feeding, the volume of the ammoniation tank is determined by 1 cubic meter per cow. According to the volume, a semi-underground rectangular grid (two grids) cement tank with a height of about 50 cm above the ground is built. Two grids are used in a loop, and one grid is used up and one grid is stored.
Third, liquid, decoration and sealing
The most common method for ammoniation of straw is urea ammoniation. First, the ammoniated raw materials such as straw are cut into 5-10 cm long. According to the ratio of 45 kg of urea per 100 kg of straw, the amount of urea is determined, and then the urea is made into 10%. The solution is sprayed in the straw. Install a layer, spray a layer, constantly flip and spray evenly, while pressing and tightening until the mouth is 30~50 cm, the top is tapered. Finally, after covering with a plastic film, it is completely sealed with soil, and the interface between the film and the crucible is sealed with wet mud.
Fourth, management and access to
During the ammoniation, it is necessary to check the film for damage and leakage, especially to prevent the mouse from biting, and to find that the damage should be repaired in time. The ammoniation time is generally 36 weeks in spring and autumn, 23 weeks in summer and more than 8 weeks in winter. After the ammoniation is mature, it can be taken out. Take one day of feeding, spread it on a clean floor, and ventilate it for 1 day before feeding. Immediately after each use, seal the mouth and avoid entering the water. It is also possible to take out all the ammoniated straws at one time, spread them out and dry them, and then store them in a cool place, covered with plastic film to prevent sun and rain, and how much to use when feeding.
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