A chitosan-coated slow release fertilizer and a preparing method thereof

Abstract

A chitosan-coated slow release fertilizer is coated. The fertilizer is prepared from borax, humic acid, a nitrogen-phosphorus-potassium composite fertilizer, stearic acid, chitosan, a composite biological enzyme preparation, glycerol monolaurate, glycerol monocaprylate, propylene glycol, Tween 20, edible glacial acetic acid, and other raw materials. Nutrients of the coated fertilizer are rich. Scientific raw material selection ensures balance of the nutrients. The external layer of the fertilizer is coated by utilizing chitosan emulsification treatment. The fertilizer greatly increases economic benefit of plantation and is suitable for popularization and application for plantation in various fields.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a chitosan-coated slow-release fertilizer and a preparation method thereof. Background technique [0002] my country is a large agricultural production country, and the use of fertilizers is extremely high. However, the current fertilizers and their corresponding fertilization technologies provide nutrients that greatly exceed the absorption needs of crops, which not only causes waste of resources, increased costs, and fertilizer residues It also increases the load of soil self-purification, which will cause serious pollution to the environment in the long run, and also make the soil acid-alkali and barren, reduce the quality and yield of crops, seriously affect the enthusiasm of farmers to plant, and is not conducive to the construction of my country's sustainable development. High-efficiency and high-yielding modern agricultural technology system. [0003] Compared with trad...

AI Technical Summary

Problems solved by technology

However, common coated fertilizers also face many problems at present. For example, chemical polymer materials are used as coating materials, which are difficult to degrade in the soil, resulting in pollution residues, or the coating has a single function, which only provides nutrient slow release ability, antibacterial, water retention and other additional functions. The value cannot be reflected, and the cost of the coated fertilizer itself results in a narrow application area, etc., which limit the promotion and use of the coated fertilizer

Patent CN201010230156.0 adopts the method of adding photosensitizer to prepare degradable polyolefin coated fertilizer. Considering that the degradation rate of photosensitizer degraded plastic is difficult to control, the product can cause secondary pollution, and the photosensitizer is easy to precipitate and migrate, resulting in pollution. Residue and expansion, not conducive to practical use