Soil pollution caused by untreated animal manure
Chicken manure is the highest nutritional value of all conventional livestock manure,Because the digestive system of chicken is relatively short, the food and feed consumed are generally less (the absorption rate is about one third), the remaining two-thirds are excreted through feces.
According to the test data, the content of nitrogen, phosphorus, potassium, organic matter, crude protein, pure protein and total amino acid in chicken manure were 1.63%, 1.54%, 0.85%, 25.5%, 28%, 13% and 8%, respectively, and all kinds of amino acids were relatively balanced.
In addition, it also contains rich B vitamins and a variety of trace elements, so the nutritional content of chicken manure is relatively rich.
Now, due to the heavy use of inorganic fertilizer, the pollution of soil and arable land is serious, which also poses a great threat to the quality and safety of fruits and vegetables.
In order to improve the soil quality and ensure the food safety of agricultural products, more and more organic fertilizers are used in agricultural cultivation, so many farmers have increased the use of chicken manure, pig manure, cattle and sheep manure.
Compared with chemical fertilizer, the use of these animal excrement has a wide range of sources and low use cost, which leads to the majority of farmers flocking to such animal excrement as chicken excrement.
However, the behavior of applying chicken manure directly into the soil without any treatment or simply drying is greatly detrimental!
The harm of direct application of chicken manure without full maturity and fermentation into the soil.
- Uric acid salts in chicken manure have a very destructive effect on crop roots.
Because the nitrogen in chicken manure mainly exists in the form of urate, it must be fermented by high temperature to allow microorganisms to decompose urate, otherwise, it is very easy for crops to burn roots.
In addition, when fresh chicken manure is used in the greenhouse and other protected areas, it will be turned into the soil. With the increase of the temperature in the greenhouse and the ground temperature, secondary fermentation will produce a lot of heat and harmful gases such as sulfur dioxide and ammonia gas, which will cause root damage and leaf fertilizer damage.
- Due to the limited conditions, there are a lot of bacteria and eggs in chicken manure.
Chicken manure contains E.coli, nematode and other pathogens and pests. Direct use will lead to the spread of pests and diseases, crop disease, and affect the human health of agricultural products.
When the immature chicken manure is fermented in the soil, it is easy to breed bacteria and insect pests, such as root knot nematode, ground maggot, and the black head maggot which has spread and expanded seriously in recent years, etc., which has brought great harm to the vegetables in the greenhouse and made the growers pay a very heavy price.
- It is also obvious that the chicken manure which has not been fully decomposed is harmful to heavy metals, antibiotics and high salt content, which will lead to a series of other problems.
How to deal with manure
- Prepare fermentation agent.
Now there are many microbial fermenters on the market. They contain a variety of beneficial microbial communities, which can not only decompose organic matter rapidly, but also inhibit harmful bacteria in chicken manure.
- Adjust the carbon nitrogen ratio.
The proper ratio of carbon and nitrogen is helpful for the fermentation of chicken manure.
Generally, the C / N ratio of chicken manure is 10:1, that of pig manure is 13:1, that of yellow cow manure is 22:1, and that of cow manure is 20:1.
Therefore, when fermenting chicken manure, it is necessary to add appropriate amount of plant straw, wheat bran, mushroom residue or furfural residue to regulate carbon and nitrogen, so as to make the fermentation decomposition of chicken manure faster and more thorough.
In addition, in order to enrich the nutrients in chicken manure and soil, 50 kg of superphosphate can also be added.
- Adjust the moisture content of chicken manure.
The suitable humidity of chicken manure is beneficial to the survival and reproduction of microorganisms, generally about 65% humidity is suitable.
Too wet chicken manure is prone to acid, too dry chicken manure fermentation is too slow, so too dry and too wet chicken manure should be adjusted according to the standard.
Our chicken manure dewatering separator can complete this process very well.
- Build a pile of chicken manure.
It is unscientific to simply stack or spread chicken manure on the ground, so we should take a reasonable way to build it.
Generally, the way of pile building is generally about 1.5m in height, 2m in width and more than 2m in length.
- Mix well, ventilate and cover.
Chicken manure fermented by microorganism is aerobic fermentation, so it is necessary to cover it and keep air permeability.
- Determine the fermentation is completed.
The chicken manure which is fully decomposed and fermented is soft, no hard lump, no odor and white mycelium.