Animal manure
Livestock manure contains more nutrients,such as nitrogen,phosphorus and potassium.It usually contains a large number of harmful substances,such as bacteria,insect eggs and heavy metals.These substances are usually mixed with urine and feed residues.Untreated or improperly handled will pollute water,air and soil.In traditional planting and breeding methods,livestock manure,as agricultural fertilizer,plays an important role in maintaining soil fertility,soil hardening and sustainable plant production.
Livestock and poultry feces can be used in agricultural production only after they are decomposed and harmless.It usually exists in the form of manure and compost.Feces are a mixture of livestock feces and gasket materials,which are decomposed by microorganisms.Compost consists of livestock manure,harvested straw,weeds and soil,which are decomposed and degraded by aerobic microorganisms.The composting process is complex,which is affected by water,temperature,carbon nitrogen ratio,microorganisms and other factors.
livestock manure
Agricultural Waste
Agricultural wastes mainly include the following categories:①the stems,leaves,roots,residues,shells and other substances treated after harvest mainly contain organic components such as cellulose,hemicellulose and lignin and mineral nutrients such as nitrogen,phosphorus,potassium,calcium and silicon.The nutritional composition and composition of agricultural waste vary according to crop type.In general,legume waste contains more nitrogen,while gramineous waste contains more potassium.After harmless treatment(such as decomposition),agricultural waste and animal manure are usually directly used as raw materials for agricultural fertilizer or commercial organic fertilizer.②Fresh materials with high water content,such as tail vegetables,fruits,flowers,etc.③Mushroom buns,burners,grains,husks.④Garden waste,such as dead leaves on green forests and trimmed branches.⑤Livestock waste,such as faeces,bedding and other food.⑥Plankton waste in water body,such as water hyacinth,cyanobacteria,etc.⑦High quality agricultural fertilizer,such as cake fertilizer,bean product residue,sugarcane mud,etc.
Agricultural wastes shall be collected by classification.Various materials shall be stacked separately.When stacking,materials shall not be stacked too high.The storage place must be covered with rainproof cover and equipped with fire hydrants and fire extinguishers to strictly prevent open fire and excessive stacking temperature.It must be inspected regularly and guarded by a specially assigned person.
straw
Biogas sludge and biogas residue
Biogas sludge and biogas residue belong to biogas fertilizer and are high-quality fertilizers.With domestic sewage,human and animal manure,plant straw and other organic matter as raw materials,the residue produced by fermentation in biogas fermentation tank,the liquid part is called biogas sludge,and the solid part is called biogas residue.
Biogas fermentation is slow and organic matter consumption is low.In addition to a certain loss of nitrogen,most nutrients,such as nitrogen,phosphorus and potassium,remain in raw materials and fermentation residues.Therefore,it is rich in plant essential organic matter and a variety of nutritional elements.The quality of its fertilizer is higher than that of ordinary compost,and can be directly used as raw material of fertilizer or commercial organic fertilizer.Biogas sludge and biogas residue can be used for various fertilization,pest control and planting in agricultural production activities.
Biogas residue
peat
Peat will also become peat,peat,peat,grass raft,etc.phone.It is an organic deposit rich in water,which is formed by the long-term accumulation of various plant remains under the condition of long-term flood(disgusting gas).Peat is a special product in wetland.This is the lowest coal content.If it is hardened into rock by geological processes,it will become lignite.According to the formation conditions,composition and characteristics of peat,it can be divided into high peat,low peat and medium peat.Peat can be processed into granular or powdered mixed fertilizer together with carbon,ammonia,phosphate fertilizer or micro fertilizer.
The use of peat as fertilizer has been well developed in the world.The existing fertilizer types can be divided into five categories:①peat commercial organic fertilizer;②Peat organic-inorganic mixed fertilizer;③Trace element peat compound fertilizer;④Peat bioactive organic fertilizer;⑤Peat spraying fertilizer and flushing fertilizer.The first three fertilizers are also called humic acid fertilizers because of their high humic acid content.
Other organic wastes
Other organic wastes are mainly domestic garbage,sewage,sludge,waste residue,slaughterhouse waste,etc.
Domestic waste is a by-product of human life.As fertilizer raw materials,domestic waste must contain more reusable organic substances,such as melons,fruits and vegetables,kitchen waste,paper and sawdust,dead leaves,etc.The most important is kitchen waste,which is the source of organic fertilizer,mainly including food waste,such as the roots and leaves of leftovers and vegetables.Compared with other types of garbage,kitchen garbage has high organic content and high recycling value.
Fresh organic waste cannot be directly used as raw materials,but it can only be used after decomposition and safety.Domestic sewage and sludge contain nitrogen,phosphorus,potassium and organic matter,as well as pollutants such as bacteria,viruses and parasitic eggs.It can only be used after treatment.The most common is aerobic high-temperature fermentation.Fermented sludge can produce organic-inorganic compound fertilizer,which not only has good fertilizer effect,but also is a good soil conditioner.