Fly ash and chitosan blended composite fertilizer and preparation method thereof

Abstract

The invention discloses a fly ash and chitosan blended composite fertilizer, which is prepared from the following raw materials in parts by weight: 32 to 36 parts of fly ash modified chitosan solution, 24 to 28 parts of organic mixed fertilizers, 16 to 20 parts of zeolite powder, 14 to 18 parts of coal gangue, 4 to 6 parts of water-retaining agents, 4 to 6 parts of nitrogen fertilizer synergists,3 to 5 parts of ammonium hydrogen phosphate and 1 to 3 parts of fermentation organisms. The invention aims at providing the fly ash and chitosan blended composite fertilizer, which has the advantagesthat the fertilizer effect of the composite fertilizer is good; meanwhile, the duration time is long; the multi-time fertilization is not needed; the labor cost is reduced; high use value and good application prospects are realized.

Description

technical field [0001] The invention relates to the field of fertilizers, in particular to a compound fertilizer blended with fly ash and chitosan and a preparation method thereof. Background technique [0002] Fertilizer refers to a class of substances that provide one or more essential nutrient elements for plants, improve soil properties, and increase soil fertility levels. Fly ash is one of the industrial wastes with a large discharge in my country. With the development of the power industry With the development, the discharge of fly ash from coal-fired power plants is increasing year by year. If a large amount of fly ash is not treated, it will generate dust and pollute the atmosphere; and biological hazards, but fly ash is rich in a large number of nutrients and trace elements, and has a large surface area, adsorption and rheology, so the use of fly ash is conducive to environmental protection and the concept of green chemistry, chitosan It also has a large surface area,...

AI Technical Summary

Problems solved by technology

[0003] The fertilizer efficiency of existing fertilizers is not very good. At the same time, the duration of fertilizer effect is short, and repeated fertilization is required, which increases economic costs and wastes manpower and material resources. At the same time, it causes soil pollution and limits the technical development of fertilizers. Chinese patent document "(Application No. : 201510207455.5)" discloses a bio-organic fertilizer with sugarcane filter mud as the main raw material and its preparation method, which belongs to the technical field of bio-organic fertilizer preparation and utilization. Manure, cow dung, chicken manure, tobacco stems and or tobacco powder and coffee grounds are mixed evenly together to obtain a premixed material. After mixing peat soil, urea, magnesium sulfate, boron powder, humic acid and EM bacterial agent, add it to the In the first premixed material, the first-stage fermentation is carried out. After 5-7 days of fermentation, it is transferred to the second-stage fermentation after pretreatment, batching, preliminary degradation, and composting. After 28-35 days, it is measured and packaged to obtain bioorganic Fertilizer, although the raw materials in this document have a wide range of sources and low cost, most of the components are organic fertilizers with low fertilizer efficiency and short duration of fertilizer effect, requiring multiple fertilization, which increases labor costs