High-potassium clear liquid foliar fertilizer and its preparation method and application

Abstract

The invention relates to a high-potassium clear liquid type foliar fertilizer as well as a preparation method and application thereof and belongs to the field of fertilizers. The invention aims at providing a high-potassium clear liquid type foliar fertilizer. The high-potassium clear liquid type foliar fertilizer provided by the invention takes water as a carrier, and active ingredients of the high-potassium clear liquid type foliar fertilizer are prepared by performing chelating reaction on a mixture A in water and further adding a substance B, wherein the mixture A contains the following components in parts by weight: 50-80 parts of dipotassium hydrogen phosphate and 4-6.4 parts of mannitol and the substance B contains the following component in parts by weight: 2-4 parts of glacial acetic acid. The foliar fertilizer provided by the invention is high in content of nutritional elements, safe and non-toxic, and can be mixed with water in any ratio for dissolution, a medicine liquid is clear, transparent, low in viscosity and good in flowability, a chelating process is adopted for production, and the foliar fertilizer is safe, environment-friendly and better in crop absorption, and can be widely used in cultivation of field crops or fruit type crops.

Description

technical field [0001] The invention relates to a high-potassium clear liquid foliage fertilizer and a preparation method and application thereof, belonging to the field of fertilizers. Background technique [0002] Liquid fertilizer, also known as liquid fertilizer, is a liquid product containing one or more nutrients needed by crops. These nutrients are dissolved in water as solutes to form a solution, or suspended in water with the help of a suspending agent to form a suspension. There are many kinds of liquid fertilizers, which can be roughly divided into two types: suspension type and clear liquid type. [0003] Clear liquid fertilizers are usually formulated with basic fertilizers such as ammonium polyphosphate, polyphosphoric acid, nitrophosphate fertilizer, nitrogen solution and potassium salt. The nutrients contained in them are completely dissolved and do not contain dispersed solid particles, so the nutrition is more balanced. , More convenient to use and more s...

AI Technical Summary

Problems solved by technology

[0004] However, the existing clear liquid type liquid fertilizer has the following problems: due to the low solubility of phosphate, the effective nutrient content exceeds 20% at normal temperature, and crystals are easily precipitated, and the properties are unstable. Therefore, the effective components of nitrogen, phosphorus and potassium in the existing liquid fertilizer are relatively low , affects the use effect, is not welcomed by farmers, and the cost of transportation, management, production and use increases

On the other hand, it is generally impossible to add trace elements to liquid fertilizers, because trace elements such as zinc, boron, manganese, calcium, etc. are mixed with each other or with phosphorus to produce precipitation, which affects the properties and use effect; while using The EDTA complexing agent solves the problem of adding trace elements, and because the complexing agent is expensive, it is difficult to promote in actual production. In addition, humic acid is also used as the main chelating agent, but the humic acid itself has limited chelating ability and has limited chelating ability with trace elements. After combining, its water solubility will become poor, the system will be suspended, the filterability will be poor, and the product will easily produce a large amount of precipitation, which will seriously affect the appearance of the product.

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