The manure is also known as ring fertilizer and bar fertilizer. It is an organic fertilizer made by mixing animal manure and mat grass, padding soil, mat straw, etc. in the livestock pen. The following three heap methods are commonly used for manure:
Close-packing method: This method is also called cold-rolling method. The manure was removed from the stockpile and compacted. The outside of the heap was covered with crushed soil. The stack is usually about 2 meters wide and 1.5-2 meters high. The disadvantages of this method are: Due to tight pressure, poor ventilation, and anaerobic decomposition of manure, it usually takes 2-3 months before it reaches a semi-mature state, and it takes 5-6 months to reach a state of maturity. Used in spring and summer. The advantage is that the temperature is low, the heat generation is less, and the ammonia is less volatile, and the ammonia is less volatile. The organic matter is consumed less, and more humus is obtained.
Loose deposition method: also known as enthalpy method. The manure is loosely packed and the accumulation height is generally 1.5-2.0 meters. Due to the air circulation in the heap, the fertilizer is decomposed under aerobic conditions, and the decomposition of the fertilizer can be completed in a short period of time and is suitable for use in autumn. The disadvantage is the large loss of organic matter and nitrogen.
Closely and loosely alternately piled up method: pile up the manure, do not compact it, make it ferment under the conditions of loose ventilation, generally 2-3 days after the temperature can rise to 60-70 °C. When the temperature falls below 50°C, it is compacted firmly and the fertilizer in the heap turns from a good gas decomposition to a gas decomposition. Continue stacking new manure on the heap, and then ferment it under loose and ventilating conditions... In this way, when the height of the fertilizer pile reaches 2 meters, the mud will be sealed outside the pile, and it will be half-commercial for 1.5-2 months. 4 - Completely decomposed in 5 months.
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