Table of Contents
Organic fertilizer is a product made from raw materials such as livestock manure and urban sludge straw after being composted, fermented, and granulated by the organic fertilizer plant. Composting methods are divided into high-temperature composting and ordinary composting according to the different raw materials. High-temperature composting uses plant matter with a high fiber content as the main raw material. It is composted and fermented under aeration conditions to generate a lot of heat. The temperature in the pile is high (50-60°C), so it decomposes quickly, composts quickly, and contains high nutrient content. At present, organic fertilizers can be roughly divided into three types: refined organic fertilizers, organic-inorganic compound fertilizers, and bio-organic fertilizers.
The difference between high temperature composting and ordinary composting:
The high-temperature composting process can kill germs, insect eggs, and weed seeds in it. Ordinary compost is generally mixed with more soil, the fermentation temperature is low, the maturation process is slow, and the composting time is long. During composting, the chemical composition of nutrients is changed, the ratio of carbon to nitrogen is reduced, and the mineral nutrients that can be directly absorbed by plants increase, and the hummus is formed.
How to compost?
High temperature composting:
In the leeward to the sun and near the water source, add some manure containing pyrolytic bacteria (such as mule and horse manure or its extract) or fermented compost according to the proportion of straw, manure, animal and plant residues, sludge, etc., for accumulation. The temperature in the compost is controlled at about 60℃ for about half a month, which can fully kill the pathogenic bacteria, parasite eggs, and weed seeds in the compost. The death rate of roundworm eggs is 95%-100%.
Composting under anaerobic conditions generally adopts semi-pit composting, which means that a rectangular pit is dug, and organic fertilizers such as straw, manure, animal and plant nitrogen sources, and soil are piled up into a steamed bun shape and compacted. Sealed tightly, overturned after 1 month, but the poorly decomposed on the bottom, still sealed with soil. 1-2 months in summer and autumn, 3-4 months in winter can be mature. This composting method is convenient to make fertilizer, but it takes a long time and the degree of maturity is uneven.
Organic fertilizer granulation:
The products after the above two kinds of compost fermentation can be processed and granulated into organic fertilizer with an Organic fertilizer production line.
Organic fertilizer category:
Refined organic fertilizer
Refers to commercial organic fertilizers that have undergone factory production and do not contain specific fertilizer-effect microorganisms to provide organic matter and a small number of nutrients. Refined organic fertilizer, as a fertilizer with high organic matter content, is the main fertilizer variety for the production of green agricultural products, organic agricultural products, and pollution-free agricultural products.
Organic-inorganic compound fertilizer
It is made of a mixture of organic and inorganic fertilizers, which not only contain a certain proportion of organic matter but also contain higher nutrients. This is consistent with the principle of “combining organic and inorganic” advocated by our country’s current scientific fertilization.
Refers to commercial organic fertilizers that have been produced in factories and contain specific fertilizer-effect microorganisms. In addition to higher organic matter, they also contain functional microorganisms that improve the release of nutrients in the fertilizer or soil.