What do you mean by organic fertilizer?

"Organic fertilizer in the broad sense" and "organic fertilizer in the narrow sense". Organic fertilizer in the broad sense: commonly known as farmyard manure, including a variety of animal and plant residues or metabolites, such as human and animal manure, straw, animal residues, slaughterhouse waste. Also includes cake fertilizer (rapeseed cake, cottonseed cake, soybean cake, sesame seed cake, castor cake, tea seed cake, etc.); compost; composting; stable fertilizer; methane fertilizer; green manure, etc.. Mainly to supply organic matter as a means, the series to improve the physical and chemical properties of the soil, to promote plant growth and soil ecosystem cycle. Part of the "broad organic fertilizer" varieties: compost: all kinds of orange stalks, leaves, grass, animal and plant residues, animal and human waste as raw materials, mixed with each other in proportion or with a small amount of soil mixed aerobic fermentation and putrefaction of a fertilizer. Composting: composting raw materials used and compost is basically the same, only in the flooded conditions for fermentation and become. Stable fertilizer: refers to the pig, cattle, horses, sheep, chickens, ducks and other livestock feces and urine and straw bedding compost made of fertilizer. Biogas Fertilizer: In a sealed biogas digester, the by-products of organic matter decaying to produce biogas, including biogas liquid and residue. Green manure: The use of cultivated or wild green plant matter as fertilizer. For example, legume green beans, broad beans, grass miscanthus, field peas, alfalfa, camas and so on. Non-leguminous green manure ryegrass, fertilizer radish, small sunflower seeds, full of red, water hyacinth, water peanuts, etc.. Crop straw: Crop straw is one of the important fertilizer species, crop straw contains crop essential nutrients such as N, P, K, Ca, s and so on. Under suitable conditions through the role of soil microorganisms, these elements through mineralization and then return to the soil, for crop absorption and use. Cake fertilizer: rapeseed cake, cottonseed cake, soybean cake, sesame cake, castor cake, tea seed cake and so on. Mud fertilizer: uncontaminated river mud, pond mud, ditch mud, harbor mud, lake mud and so on. Organic fertilizer in a narrow sense: refers to a variety of animal waste (including animal manure; animal processing waste) and plant residues (cake fertilizer; crop residues; fallen leaves; withered branches; grass charcoal, etc.), the use of physical, chemical, biological, or all three of the processing technology, after a certain processing technology (including but not limited to the heap; high temperature; anaerobic, etc.), ****** which the harmful substances (pathogens, pests and weeds, seeds, etc.). The formation of harmful substances (pathogenic bacteria, pests, weeds, seeds, etc.) to achieve harmless standards, in line with the ****** relevant standards (NY 525-2002) and regulations of a class of fertilizers. Organic fertilizer standard definition (NY 525-2002): mainly from plants and/or animals, applied to the soil to provide plant nutrients as its main function of carbon-containing materials. Main technical indicators: Appearance: brown or gray-brown, granular or powder, no mechanical impurities, no bad smell. Organic matter content: ≥ 30% Total nutrients: ≥ 4.0% Moisture: ≤ 20% pH: 5.5-8.0 Organic fertilizers processed by biomass, animal and plant wastes, plant residues, ****** the toxic and harmful substances, rich in a large number of beneficial substances, including: a variety of organic acids, peptides, as well as nitrogen, phosphorus, potassium, including a wealth of nutrients. Nutritional elements, including nitrogen, phosphorus and potassium. Application of organic fertilizers can not only provide ****** nutrition for crops, and long fertilizer effect, can increase and update the soil organic matter, promote microbial reproduction, improve the physical and chemical properties of the soil and biological activity, is the main nutrients of green food production. Now, with the continuous development of science and technology, through the artificial screening of beneficial flora, separation, domestication and cultivation technology, the beneficial flora access to harmless treatment of organic fertilizers, can produce a variety of different varieties of bio-organic fertilizers, which can improve the soil quality, reduce environmental pollution, fertilization and efficiency.