Five steps for fermenting chicken manure into organic fertilizer
Step 1: Mixing raw materials and starter evenly
1~1.5 tons of dry chicken manure (about 2.5~3.5 tons of fresh chicken manure) needs one kilogram of chicken manure starter. And 5~10 kg of rice bran, corn or bran need to added to each kg of starter. After mixing well, you can sprinkle them in ready raw materials.
Step 2: Adjusting C/N
The ratio of carbon-nitrogen in fermented fertilizer should be maintained at 25-30:1, and the PH should be adjusted to 6-8. Because the ratio of carbon-nitrogen in chicken manure is high, some straw and mushroom residue should be added during fermentation.
Step 3: Adjusting the moisture of chicken manure
In the process of fermenting organic fertilizers, whether the moisture content is appropriate is very important. It should not be too high or too low. It should be kept at 60~65%. When the chicken dung can form a ball by hand, the water can be seen between the fingers and will not drip. It is advisable to be able to spread out on the ground. That state indicates that the amount of water added to the sheep dung is just right.
Step 4: Building a pile of chicken manure
When making a fermentation pile, it cannot be made too small or too short. Too small will affect fermentation. Generally, the height is about 1.5 meters, the width is about 2 meters and the length is more than 2 to 4 meters. And the fermentation made by compost turner is better.
Step 5: Ventilation
Fermentation aids for fertilizers are oxygen-consuming microorganisms, so in the fermentation process, oxygen supply measures should be increased. You should mix well and frequent turn the raw materials by compost turner to be sure aeration is appropriate, otherwise it will affect the fermentation effect of materials.