Poultry manure
There are mainly chicken manure, pigeon manure etc. These kinds of manure usually contain high nitrogen content, moderate water content, and contain more calcium and other medium and trace elements, suitable for some raw materials such as straw with high carbon content. Powder, mushroom residue, charcoal, sawdust and other combinations. Usually, some of the plants may be decomposed when taken out from the farm. Because of the high nitrogen content and high pH, the release of ammonia will cause nitrogen loss, and at the same time, it will easily produce odor. It may be necessary to use a low pH conditioner to reduce the pH. Poultry manure is easily decomposed and has a high temperature of maturity. It is a hot fertilizer. It uses poultry manure as a raw material, which is rapidly decomposed and fermented, and can be made into a fertilizer with high nutrient content. It is a very good composting material.
Livestock feces
This kind of raw material is represented by pig manure, which has high nitrogen content but large water content and contains more humus, which has a good effect on improving soil fertility. Its moisture content and 0N depend on whether or not to use litter or litter. The type and quantity, the management method, the culture method, and the climate are usually odorous. Collecting by dry and wet sorting can effectively reduce water content and control odor, and is also a good composting raw material. The organic matter in cow dung is more difficult to decompose, slower in maturity and lower in fermentation temperature; sheep manure has finer texture and less water content, and its nitrogen form is mainly urea nitrogen, which is easy to be decomposed and utilized; organic matter content in horse manure Higher, it also contains a large amount of fiber-decomposing bacteria, which can produce high temperatures during composting.
Other livestock manure
For example, goats, sheep, rabbits and other livestock manure are usually well stocked as composting materials, as they are mostly collected from the accumulation of manure, so they have a low relative moisture content but a high C/N; in the absence of a bedding This type of feces has high humidity and high nitrogen content. Among them, the contents of nitrogen, phosphorus and potassium in rabbit manure were 1.53 times, 2.88 times and 1.6 times times of chicken manure, and 3, 29, 4.6 and 2.67 times of sheep manure, respectively. Ammonium 10&5k, superphosphate 100.9k potassium sulfate 17, 85kgo is a good composting material if the feces are separated from the litter.
Straw
The straw has high organic matter content and is rich in nutrients needed for crop growth. It contains almost no impurities.
The preferred raw materials have higher agricultural value for compost products. Straws have the characteristics of low moisture, about 8%, and %. The C/N of rice straw and rice husk is 60-70, and the C/N of wheat straw is 110-120, which is higher than the C/N value suitable for composting. It can be said that straw is not suitable as a raw material for compost alone. Rice husks are used to protect rice and therefore contain very hard silicic acid. If it is processed without processing, the water absorption rate is not high, only 75%, 85%, and composting takes a long time. However, after pulverization, the water absorption rate becomes 130% and 250%, which is good for composting.
Kitchen waste
The nature of kitchen waste varies. Especially because of the different seasons and regions, the nature is different, it is necessary to root.
According to the plan, the analysis and testing are carried out in advance, and the nature is indeed grasped. Generally, water accounts for about 70% and 85%, BOD is 24000, 58000 mg/k, nitrogen is 2000, 11000 mg/kg, phosphoric acid is 210, 2900 mg/kg, and pH is 4-6. Recently, garbage is sorted and recycled, so the raw materials for composting are mostly household waste with a high ratio of food waste. The kitchen waste composting system is heating up fast, the composting cycle is short, the organisms in the stacking process can use carbon to know the deficiency, and the nitrogen loss of composting is large. The nitrogen loss of the kitchen waste compost can be reduced by adding appropriate carbon sources. The moisture content of the kitchen waste is as high as 90%. During the fermentation process, the paste-like garbage is easy to fill the entire space of the stack, and the air cannot enter the interior, causing the microorganisms to be in an anaerobic state, slowing down the degradation rate, and generating hydrogen sulfide, etc. Odor, while reducing the temperature of compost, affecting the quality of compost.