(a) spreading dry raw materials
Take 10% rice husk and sawdust for later use.
Pour the remaining rice husk and sawdust into the padding yard, evenly sprinkle the rice bran, microbial inoculum mixture and pig manure on it, and fully mix and stir with forklift and other machinery or labor.
Note: pig manure should not be used as padding in summer, but the amount of high-quality rice bran should be increased.
The first layer is paved with rice husk, and the rice husk is paved according to the set rice husk height; The second layer, spreading sawdust on the rice husk to a set height; The third layer is to spread the prepared yeast bran mixture evenly on the sawdust.
Second, the mixing method of padding 1, the padding is mixed for the first time, and the paved padding is mixed evenly with water until the water content reaches 45%~50%. If there is caked rice husk or sawdust, it should be scattered, and sawdust larger than eggs should be removed to prevent pigs from being injured.
2. Mix the wet filler for the second time. Confirm that the moisture content of the first mixed padding is about 45% (the padding does not agglomerate after being loosened by hand, and there is a little water mark on the palm), and then turn it evenly.
3. Stacking and fermenting the padding for the first time and stacking the mixed padding into trapezoidal piles for the second time, with the height not less than 1.5m and the volume of each pile not less than 10 m3.
Cushion piles should be concentrated as much as possible to reduce the surface area and landing area.
The reason is that the surface layer and 20~30 cm thick padding can not be fermented because of the low temperature.
Third, the bag keeps warm, moist and warm. When the ambient temperature is lower than 25℃ day and night after the bedding is stacked, it should be covered with heat preservation.
The platform and the top 10 cm do not need to be covered to facilitate air entry.
If the maximum temperature of day and night environment is lower than 0℃, a suitable open bottle should be stuffed in the padding to raise the temperature.
Four. Under normal conditions, the temperature at the depth of 35 cm should rise to above 40℃ after 24 hours and above 65℃ after 72 hours, and it will be delayed when the water content is too high and the ambient temperature is too low.
Temperature detection points: measure one point at the horizontal interval of 1.5m and three points at the vertical direction. The temperature of each point is basically the same, and it lasts for more than 48 hours above 65℃, indicating that the fermentation is successful. Every time the temperature is measured, it should be recorded at different points, and any place that does not exceed 65℃ is regarded as fermentation failure.
Fifth, the second fermentation. When the first stacking fermentation temperature reaches above 65℃ and is kept for 48 hours, the pile can be reversed for the second fermentation. Pour the unfermented part of about 25 cm on the surface and the ground to the center of the second fermentation, and insert the fermentation pad into the outside and the ground for fermentation. Temperature detection and recording are the same as those in the first fermentation. When the temperature is kept above 65℃ for 48 hours, the filler is fermented and can be used.