Cattle farming is common in many rural areas. People who have raised it should know that there will be a lot of cow dung and even some old cow dung. Some farmers who know a little bit will process these cow dung into organic fertilizer. How to do it? Let's take a look at it.
Fermentation method for cattle dung processing
1. Adding 10%-15% of straw, rice bran and other auxiliary materials in the total amount of fermented cow manure to adjust the water, ventilation and carbon-nitrogen ratio. The water content of cow manure is controlled at about 60%, and the carbon to nitrogen ratio is between 30-40.
2, add 0.04% such as gold probiotics starter (first mix the starter with 10 times of bran and then add to the cow dung and mix), mix it and put it into the fermentation tank in the form of a ladder, above the width 2m, the lower width is 3m, the height is 1.2m, and the length depends on the length of the length. It is compacted and sealed, and then covered with plastic cloth and tarpaulin. The fermentation time is about 15-40 days.
3, in winter and spring every 10 days at noon to turn over 1 time, in summer and autumn every 5 days to turn over 1 time, so that the material fermentation temperature is controlled between 55-70 ° C, the fermentation temperature can be measured and controlled by a stick digital thermometer, turn over After three times, the fermentation can be successful.
Characteristics of cow manure fermentation into organic fertilizer
1. The mechanical turning is very mobile, we can use the maneuverability to compost, to prevent the loss of water in the later stage.
2. Low requirements for civil works, no need for supporting fermentation tanks, can be piled up outdoors, saving construction investment.
3. The area of ​​the composting site needs to be relatively large.
4. The outdoor compost in the northern region is poorly insulated in winter, and the composting cycle needs to be extended or seasonally stopped composting.
5. In the open-air composting, the rainy season pile is susceptible, and it is recommended to cover the shelter with conditions.
Key points of organic fertilizer for cow manure fermentation
We know that most of the nutrients in old cow dung have been decomposed and digested by natural anaerobic bacteria. There is no excess nutrients to supply the fermenting agent, which makes aerobic fermentation difficult and the material cannot heat up, so it is difficult to implement. . In addition, the cow dung has a large water content and poor gas permeability, and it is impossible to carry out aerobic fermentation. Therefore, it is necessary to find other materials to be fermented together with cow dung, such as xylose residue and soybean meal.
The above is a method for fermenting cow manure into organic fertilizer. Now whether it is planting or breeding, it is a recycling model. It is a very good method to master this processing technology and increase its economic benefits.
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