Organic polymer slow-controlled release nitrogen and phosphorus fertilizer containing iron, manganese, copper and zinc microelements and preparation method of organic polymer slow-controlled release nitrogen and phosphorus fertilizer

A technology of organic polymers and trace elements, applied in the direction of nitrogen fertilizer, urea compound fertilizer, fertilization device, etc., can solve the problems of being easily fixed by the soil, high production cost of chelate, and low utilization rate, so as to increase crop yield and improve The effect of crop quality and simple preparation method

Inactive Publication Date: 2015-04-29
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Inorganic salt trace element fertilizer is made by compounding the trace elements required by crops in the form of inorganic salt, but the trace elements applied in this form cannot be absorbed by plants quickly and effectively. Metal ions exist in the form of metal ions, which are easily fixed by the soil, so that the fertilizer effect of trace elements cannot be exerted normally.
With the deepening of research, water-soluble metal chelates began to be used as trace

Method used

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  • Organic polymer slow-controlled release nitrogen and phosphorus fertilizer containing iron, manganese, copper and zinc microelements and preparation method of organic polymer slow-controlled release nitrogen and phosphorus fertilizer
  • Organic polymer slow-controlled release nitrogen and phosphorus fertilizer containing iron, manganese, copper and zinc microelements and preparation method of organic polymer slow-controlled release nitrogen and phosphorus fertilizer
  • Organic polymer slow-controlled release nitrogen and phosphorus fertilizer containing iron, manganese, copper and zinc microelements and preparation method of organic polymer slow-controlled release nitrogen and phosphorus fertilizer

Examples

Experimental program
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Effect test

Embodiment 1

[0053] A preparation method of an organic polymer slow-release nitrogen-phosphorus fertilizer containing trace elements of iron, manganese, copper and zinc, comprising the following steps:

[0054] (1) Add 1.8g of phosphoric acid and 0.0375g of zinc powder into the first reactor, stir and dissolve to obtain component A;

[0055] (2) Add 50 mL of distilled water to the second reactor, add 1.25 g of ferrous sulfate, 0.525 g of manganese sulfate and 0.108 g of copper sulfate crystals, adjust the pH to 8-10, let stand, and filter to obtain component B;

[0056] (3) Add component B to component A to obtain product C;

[0057] (4) Add a molar ratio of 39.0g urea and 35.0mL formaldehyde into the third reactor, react for 120min at a pH value of 8-10 and a temperature of 30-35°C, and then raise the temperature to 50°C- 60°C, continue to react for 30 minutes, add product C, raise the temperature to 70-80°C, continue to react for 40 minutes, the reaction solution becomes viscous, granul...

Embodiment 2

[0060] The preparation method of the organic macromolecule slow and controlled release nitrogen and phosphate fertilizer containing trace elements of iron, manganese, copper and zinc comprises the following steps:

[0061] (1) Add 1.8g of phosphoric acid and 0.0375g of zinc powder into the first reactor, stir and dissolve to obtain component A;

[0062] (2) Add 50 mL of distilled water to the second reactor, add 1.25 g of ferrous sulfate, 0.525 g of manganese sulfate and 0.108 g of copper sulfate crystals, adjust the pH to 8-10, let stand, and filter to obtain component B;

[0063] (3) Add component B to component A to obtain product C;

[0064] (4) Add 39.0g urea and 39.0mL formaldehyde into the third reactor, react for 120min under the conditions of pH value 8-10 and temperature 30-35°C, then raise the temperature to 50°C-60°C, Continue the reaction for 30 minutes, add product C, raise the temperature to 70-80°C, continue the reaction for 35 minutes, the reaction solution b...

Embodiment 3

[0067] The preparation method of the organic macromolecule slow and controlled release nitrogen and phosphate fertilizer containing trace elements of iron, manganese, copper and zinc comprises the following steps:

[0068] (1) Add 1.8g of phosphoric acid and 0.0375g of zinc powder into the first reactor, stir and dissolve to obtain component A;

[0069] (2) Add 50 mL of distilled water to the second reactor, add 1.25 g of ferrous sulfate, 0.525 g of manganese sulfate and 0.108 g of copper sulfate crystals, adjust the pH to 8-10, let stand, and filter to obtain component B;

[0070] (3) Add component B to component A to obtain product C;

[0071] (4) Add 39.0g of urea and 30.5mL of formaldehyde into the third reactor, react for 40min under the conditions of pH value 8-10 and temperature 30-35°C, then raise the temperature to 50°C-60°C, Continue to react for 30 minutes, add product C, raise the temperature to 70-80°C, continue to react for 30 minutes, the reaction solution beco...

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Abstract

The invention discloses an organic polymer slow-controlled release nitrogen and phosphorus fertilizer containing iron, manganese, copper and zinc microelements. The organic polymer slow-controlled release nitrogen and phosphorus fertilizer is prepared by the following steps: stirring and dissolving phosphoric acid and zinc powder in the molar ratio of 27 to 1 to prepare a component A; adding ferrous sulfate, manganese sulfate and copper sulfate crystal to 50mL of distilled water in the molar ratio of 1.9 to 1 to 0.18; adjusting pH to be 8-10, standing and filtering to prepare a component B; adding the component B to the component A to prepare a product C; enabling urea and formaldehyde to react at 30-35 DEG C in the molar ratio of (5:4) to (2:1) for 40-200 minutes when the pH value is 8-10, then heating to 50-60 DEG C, and further reacting for 30-90 minutes; and adding the product C, adjusting the temperature to be 70-100 DEG C, and further reacting for 30-40 minutes, wherein the reaction solution is in a viscous state; pelletizing and drying to obtain the organic polymer slow-controlled release nitrogen and phosphorus fertilizer containing iron, manganese, copper and zinc microelements.

Description

technical field [0001] The invention relates to a slow and controlled release chemical fertilizer, in particular to an organic macromolecule slow and controlled release nitrogen and phosphorus fertilizer containing trace elements of iron, manganese, copper and zinc and a preparation method thereof. Background technique [0002] At present, there are 17 kinds of essential nutrients that are recognized as indispensable for crop growth, which can be roughly divided into macronutrients, secondary and micronutrients according to the quantity required by plants. The importance of macronutrients such as nitrogen, phosphorus, and potassium has been well known, but the importance of micronutrients is often overlooked because plants have less demand for them. In recent years, with the continuous improvement of crop yields and the gradual decline of the proportion of organic fertilizers in the total composition of fertilizers, the role of trace elements has become more and more obvious...

Claims

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Application Information

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IPC IPC(8): C05G3/00C08G12/40
CPCC05C9/00C05G3/00C05G3/90C08G79/04C05D9/02
Inventor 赵贵哲程冬冬向阳白甜刘亚青
Owner ZHONGBEI UNIV
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