Second, corn straw silage selection is very important, it is best when the corn matures, with the cut with the transport. Corn stalks are very fresh at this time. Except for 2-3 yellow leaves on the base, the other leaves are green and the water content is 60%-75%. Corn stalks cannot bring roots and mud.
Third, the fresh corn stalks into a 2-3 cm long segment immediately after filling pits, fill with the plutonium, leveling after the practical, especially on the side, corner, the more real the better. Do not bring in nails and iron wire. Permanent silo silage, can be filled with straw while rolling back and forth with the tractor, until 60-80 cm above the cellar mouth up, the crypt should be lining the plastic film at the bottom and around to prevent air permeability.
Fourth, after the silage filler, it is necessary to seal the cellar in time. General use of plastic film (length and width depending on the size of the pit), spread from one end to the other, the width should be more than 30-40 cm, in order to press soil. Then remove the internal air and apply 10-15 cm thick wet soil. The soil at the edge of the crypt must be more than 30 cm above the ground. After July, fill the depression with soil to make it airtight and watertight.
Fifth, corn straw silage can be long-term preservation. After 30-40 days of general storage, it can be opened for cellar feeding. When opening the pit, start from one end, remove the pressure soil, clear the debris around the opening, and slowly open the film to expose the silage of corn stalks. With the use of open, each feed is sufficient to feed 1 or 1 day (15-20 kg per cow per day is appropriate). Immediately after discharge, cover the opening.
6. First, build a cement pond with a length of 4 meters, a height of 1.5 meters and a width of 2 meters (on a half ground, add 35 kg of ammoniating solution per 100 kg of wheat straw, and mix the tank with full agitation. When the wheat straw is 30 cm above the pool mouth, it is sealed with a plastic film and pressed with wet earth. After a certain period of time (10-15 days in summer, 60 days in winter and 30 days in spring), it can be used for feeding.
Seven, wheat straw ammoniation, first of all ammonia solution preparation. The ideal formula is to add 4 kg of quicklime in 100 kg of water and stir it well. After filtration and slag addition, add 18 kg of urea and dissolve it. Some places use liquefied ammonia, the effect is not bad.
8, 50 kg of wheat straw and 17.5 kg of ammoniated liquid and mix thoroughly, with a dedicated straw ammoniating machine to grow 80 cm wide, 60 cm wide, 40 cm high bales, tied tightly with plastic tape, immediately into a black plastic bag, exposure 1 It will be used after 10 days. This method occupies a small area, requires less investment, saves energy, and has sufficient ammoniation. It can increase the crude protein by a factor of 1, and the digestibility by 20%.
Nine, this method is also called "liquid ammonia" ammoniation method. The wheat straw to be aminated is mixed with water according to the ratio of 10:3, and it is piled into circular pods. Each pod is about 1000-1500 kilograms. The outer cover plastic sleeve is sealed at its base and then inserted into a special â€œammonizing gunâ€. The liquid ammonia is sprayed in the crucible, and the ammonia release position is continuously changed. The amount of ammonia discharged is 35 pounds of wheat straw. Immediately after ammonia release, tighten the mouth. One month later, the scorpion disperses the residual ammonia and can be fed.
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