There are many methods for ammonia treatment of straw, including cellar type, semi-cellar type, wall type, stack type, and bag type. Below to introduce stacking for your reference.
Stacking
Combine crops (barley, wheat, rice, sorghum, corn, and beans) in bales of stalks and compact them in the desired size. If the ground is sandy loam, a layer of plastic film must be laid in advance to prevent ammonia from seeping. leak. Select a black plastic film thicker than 0.2 mm and cover the straw (it can also be made in the required size in advance). The upper and lower plastic film joints should each have 50 to 70 cm of sides, and the two sides should be folded and folded together. Then they should be compacted along the edge of shoveling soil to seal the entire bowl. A small ditch should be formed around the bowl to facilitate drainage. ;
2, injection of ammonia
The liquid ammonia injection tube is inserted into the crucible from a height of about 1 meter, and an injection tube is inserted every 2 to 3 meters so that the ammonia can be evenly distributed. After the specified amount of ammonia gas is to be injected, close the gas tank valve, pull out the injection pipe, and quickly seal the mouth to prevent running out of gas. The amount of liquid ammonia generally accounts for 3% of the dry matter to be treated. Straw moisture content is best kept at 20-30% (high or low water content will affect the increase of crude protein content).
3, aging
After maturation, it takes a period of time to ripen. The length of time depends on the ambient temperature. Normal temperature is 30°C, one week can be unsealed and fed; 15～30°C needs 1～4 weeks; 5～15°C needs 4 ~ 8 weeks. If you do not feed for the time being, you may not open it for long-term storage.
Feed ammoniated straw feed should pay attention to:
Because the residual ammonia in the newly opened ammoniated straw evaporates, it must not be taken out on the same day of the same day, otherwise it will blind the animals. Take out and dry for 2 to 3 days after taking out. However, the drying time cannot be too long. Too long will evaporate the ammonia nitrogen in the straw. Reduce the nutritional value of feed. Usually two or three days in advance to remove the required amount of drying, and the rest re-sealed to ensure the best effect of feeding.
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