Organic fertilizer: mainly refers to all kinds of animals and plants, after a certain period of fermentation and decay of the fertilizer formed (including processed rapeseed cake, is no odor). Organic fertilizer contains a large amount of biological matter, animal and plant residues, excreta, biological waste and other substances. The application of organic fertilizer can not only provide comprehensive nutrition for crops, but also have long fertilizer effect, increase and renew soil organic matter, promote microbial propagation, and improve soil physical and chemical properties and biological activity. It is the main nutrient source for the Production of green food, and it is usually processed and produced through the Organic Fertilizer Production Line to ensure its quality and effect.