The application of organic fertilizers can reduce the amount of fertilizer used, thus reducing the adverse impact of fertilizers on the environment. The production process of organic fertilizer is also the process of recycling urban and rural organic waste into treasure. In addition, the application of organic fertilizer can increase the content of organic matter, enhance the adsorption of heavy metals and pesticides in soil, and reduce their harm. What do farmers mainly look for when they buy organic fertilizer production lines? Look at the raw materials, to understand whether the raw materials used in the product. At present, organic fertilizer equipment manufacturers use better organic raw materials for soybean meal, sesame meal, sugar residue, cassava residue, bacterial protein, amino acid, humic acid, tobacco powder, etc., and some also add bone meal, shell powder and other calcium raw materials, increasing calcium content on fruit trees bitter acne disease, water heart disease has a significant improvement. Second, look at whether the proportion of microbial strains is scientific. The enzyme system of the excellent strain is comprehensive, the enzyme activity is high, and the enzyme activity of the cellulase, xylanase, polygalacturonase and polygalactosyllyase secreted by the strain can meet the requirements of the industrial strain, and the tolerance is strong. Three to see whether the organic fertilizer production line process is strict. The whole production process of commercial organic fertilizer can be summarized as batching - ranching - granulation - cooling - screening - packaging, of which the degree of ranching is extremely important. Good products have high maturity and lasting fertilizer effect; Products that are not mature enough can easily cause crop burning.