Three-dimensional elastic stereoscopic net nest controlled-release fertilizer and preparation method thereof

Abstract

The invention relates to three-dimensional elastic stereoscopic net nest controlled-release fertilizer and a preparation method thereof. The fertilizer is composed of, by weight, 20-30% of urea, 25-30% of dispersant, 5-8% of emulsifier, 35-45% of crosslinking agent, 1-5% of zinc sulfate and 0.5-1.5% of carbozymethylcellulose. A three-dimensional elastic stereoscopic net nest is formed by subjecting the above raw materials and various nutritional elements to catalytic crosslinking and polymerization; functions that micropores of the stereoscopic net nest are water-expandable and expand when being heated and contract when being cooled, so that the fertilizer has high hydroscopicity, starts to expand by several times when encountering water and has elasticity and viscosity; elasticity and thermal expansion functions of the stereoscopic net nest micropores when expanding are utilized. Water-soluble substances are adopted, so that the fertilizer is environment-friendly and residue-free, utilization rate of the fertilizer can reach about 75%, and the fertilizer plays a role in resisting drought and holding water; the fertilizer can improve soil and play a role in resisting drought and holding fertilizer and water to improve fertilizer efficiency.

Description

technical field

[0001] The invention belongs to the field of fertilizers, and relates to a controlled-release fertilizer, in particular to a three-dimensional elastic three-dimensional net nest control fertilizer and a preparation method thereof. Background technique

[0002] Fertilizer is one of the most important means of production in agricultural production and the material basis for the sustainable development of agriculture. In recent years, due to the loss and inefficient use of fertilizers, serious resource waste and huge economic losses have been caused, and more importantly, serious pollution has been caused to the human body, the atmosphere, soil and food. Therefore, how to improve the utilization rate of fertilizers and organically combine the application of fertilizers with the yield, quality and environmental protection of crops has become the focus of special attention in the field of fertilizer research.

[0003] At present, chemically synthesized slow-relea...

Examples

Embodiment Construction

[0022] The present invention will be further described in detail below through the specific examples, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention with this.

[0023] A three-dimensional elastic three-dimensional mesh control fertilizer and a preparation method thereof, the required raw materials and their weights are respectively (calculated in 1000 kilograms):

[0024]

[0025] The steps of its preparation method are:

[0026] (1) Mix ferrous sulfate and potassium chloride for 1 hour at a temperature of 65°C to obtain a dispersant;

[0027] (2) Mix glucomannan, ethylene glycol and mannose for 2 hours at a temperature of 80°C to obtain an emulsifier;

[0028] (3) Mix monoammonium phosphate, starch and borax for 1.5 hours at a temperature of 75°C to obtain a crosslinking agent;

[0029] (4) Add zinc sulfate and carboxymethyl cellulose to the above materials and mix evenly, then add urea for gr...

technical field

[0001] The invention belongs to the field of fertilizers, and relates to a controlled-release fertilizer, in particular to a three-dimensional elastic three-dimensional net nest control fertilizer and a preparation method thereof. Background technique

[0002] Fertilizer is one of the most important means of production in agricultural production and the material basis for the sustainable development of agriculture. In recent years, due to the loss and inefficient use of fertilizers, serious resource waste and huge economic losses have been caused, and more importantly, serious pollution has been caused to the human body, the atmosphere, soil and food. Therefore, how to improve the utilization rate of fertilizers and organically combine the application of fertilizers with the yield, quality and environmental protection of crops has become the focus of special attention in the field of fertilizer research.

[0003] At present, chemically synthesized slow-relea...

Examples

Embodiment Construction

[0022] The present invention will be further described in detail below through the specific examples, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention with this.

[0023] A three-dimensional elastic three-dimensional mesh control fertilizer and a preparation method thereof, the required raw materials and their weights are respectively (calculated in 1000 kilograms):

[0024]

[0025] The steps of its preparation method are:

[0026] (1) Mix ferrous sulfate and potassium chloride for 1 hour at a temperature of 65°C to obtain a dispersant;

[0027] (2) Mix glucomannan, ethylene glycol and mannose for 2 hours at a temperature of 80°C to obtain an emulsifier;

[0028] (3) Mix monoammonium phosphate, starch and borax for 1.5 hours at a temperature of 75°C to obtain a crosslinking agent;

[0029] (4) Add zinc sulfate and carboxymethyl cellulose to the above materials and mix evenly, then add urea for gr...

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