Pig dung and chicken dung are one of the most notorious stinky dung in the breeding industry. Pig manure should be a good farmyard manure, and a high-quality organic fertilizer resource for soil improvement. However, if fresh pig manure is applied directly, it will inevitably cause crop root injury, disease, grass damage and other negative effects. According to statistics, about 1000 pigs are sold annually, and about 1.2t of fresh pig manure is produced every day. If the natural composting and fermentation process is used in the past, there are several disadvantages: first, the composting time is long (4-6 months), and the effect is poor; Second, long-term stacking not only occupies the site, but also causes pollution to the surrounding environment. Third, the natural composted fermentation faeces are rotten, wet and stinky, which is difficult to transport and directly apply.
The pig manure harmless treatment organic fertilizer production line technology is analyzed by taking the manure treatment of pig farms with a breeding scale of about 1000 pigs as an example. The microbial fermentation strain used in this project is a highly effective composite microbial agent that can rapidly decompose livestock manure, crop straw sludge, agricultural by-product processing organic waste, etc., and has the following significant characteristics:
A Fast maturing organic solid stacking material, suitable for a variety of different composting substrates and different organic fertilizer dumping equipment;
B The content of effective living bacteria is more than 5 billion/g, and the addition amount is small and the cost is low. It only costs 8 yuan per ton;
C temperature rises quickly. When the ambient temperature is 0-5C, the composting temperature can rise to 55-70 “C within 48-72 hours;
D The composting cycle is short (7-10 days), which can save a lot of site and production costs:
E can quickly and effectively eliminate the peculiar smell in materials;
F has less nutrient loss, and the total nitrogen loss rate is less than 1%, which can effectively maintain the effective nutrient of compost. After fertilizer application, it can increase the number of microbial flora, improve the physical and chemical properties of soil, adjust the soil pH value, and has significant fertilizer effect;
G The high temperature of compost lasts for a long time, which can kill the bacteria and eggs in the raw materials of compost, make the compost reach the harmless standard in a short time, and become an efficient commercial organic fertilizer meeting the requirements of green food production.
H The amount of organic fertilizer produced by fermenting pig manure with BM strain is small, which can be used as base fertilizer: 80-150 kg/mu for cash crops such as vegetables, 80-100 kg/mu for grain, 80-100 kg/mu for tea trees, 1-3 kg/tree for fruit trees, and 0.5-1 kg/m2 for lawn.
