Fertilizers for green food production
First, farmyard fertilizer refers to fertilizers containing a large number of biological substances, animal and plant residues, excrement, biological waste and other substances. 1. Composting. A variety of straw, defoliation, green, lake grass, human and animal dung as raw materials, mixed with a small amount of soil from a heap of organic fertilizer. 2, Feifei. The materials used are basically the same as compost, except that they are fermented under flooding conditions. 3, manure. Refers to pigs, cattle, horses, sheep, ducks and other livestock and poultry excrement and straw dunnage made of fertilizer. 4, biogas fertilizer. In a sealed biogas digester, organic matter decomposes under gas conditions to produce byproducts of biogas, including biogas liquids and residues. 5, green manure. The use of cultivated or wild green plants as fertilizers can be divided into two major categories: legume and non-bean legumes. There are mungbeans, broad beans, grass cedar, sand wangwang, tianjing, alfalfa, ramie, and purple yin ying in legumes. Dice and so on. Non-legume green manure, the most commonly used grasses, such as ryegrass; cruciferous, such as fat field radish; Asteraceae, such as swollen Bingju, small sunflower; Man Jiang Hongke, such as Man Jianghong; Yu Jiuhua Branch, such as water hyacinth; Branch family, such as water peanuts and so on. 6, crop straw. Crop stalks are one of the important organic fertilizer sources. Crop stalks contain a considerable amount of nutrient elements (N, P, K, Ca, S, etc.) necessary for the crops. Under suitable conditions, they act through the action of soil microorganisms. The elements are mineralized and returned to the soil for absorption and utilization by the crop. 7. Mud fertilizer. Unpolluted river mud, pond mud, gully mud, mud in the harbor, lake mud and so on. 8, cake fat. Rapeseed cake, cottonseed cake, bean cake, sesame cake, peanut cake, castor cake, tea seed cake, etc. Second, commodity fertilizer 1, commodity organic fertilizer. Refers to a wide range of biological substances, animal and plant residues, excrement, biological waste and other materials processed as raw materials, such as fertilizer. 2, humic acid fertilizers. Refers to peat (charcoal), lignite, weathered coal and other fertilizers containing humic acids. 3, microbial fertilizer. Refers to the production of active microbial preparations using specific microbial strains. It is non-toxic, harmless and does not pollute the environment. Through the life activities of specific microorganisms, it can improve plant nutrition, or produce phytohormones, and promote plant growth. According to microbial fertilizers to improve plant nutrient elements, can be divided into five categories; Rhizobium fertilizer, nitrogen-fixing bacteria fertilizer, phosphorus bacteria fertilizer, silicate bacteria fertilizer, compound microbial fertilizer. 4, semi-organic fertilizer (organic compound fertilizer). Fertilizers made of organic or inorganic substances mixed or compounded. After the harmless treatment of livestock and poultry manure, add appropriate amounts of zinc, manganese, boron, molybdenum and other trace elements made of fertilizers, fermentation waste liquid drying compound fertilizer: the fermentation industry waste liquid dry material as raw materials, with the cultivation of mushrooms or Fertilizer made from an abandoned mixture for poultry. 5, inorganic (mineral) fertilizer. The minerals are made in the physical or chemical industry, and the nutrients are in the form of inorganic salts. Mineral potassium and potassium sulfate; Mineral phosphate (phosphate rock); Calcined phosphate (calcium magnesium phosphate, defluorinated phosphate); Limestone: Limited use in acidic soils; 6, foliar fertilizer. It refers to the fertilizer that is sprayed on the leaves of plants and can be absorbed and utilized by them. Foliar fertilizers must not contain chemically synthesized growth regulators. Trace element fertilizer, mainly composed of Cu, Fe, Mn, Zn, B, Mo and other trace elements and beneficial elements. Plant growth auxiliary fertilizer, using natural organic fertilizer extract or inoculation of beneficial bacteria fermentation broth, plus some humic acid, alginic acid, amino acids, vitamins, sugar and other fertilizers. Third, other fertilizers 1, including foods without synthetic additives, organic by-products of the textile industry. 2, including fish residue without preservatives, cattle wool waste, bone meal, amino acid residues, bone glue waste residue. China Agricultural Network Editor