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A kind of corn compound fertilizer and preparation method thereof

A compound fertilizer and compound fertilizer technology, applied in the direction of substrate fertilizer, fertilization device, fertilizer mixture, etc., can solve the problems of reduced water retention effect, limited water retention effect, complicated preparation process, etc., to improve strength and pelleting rate, reduce The effect of watering frequency and simple process

Active Publication Date: 2017-07-11
安徽中科帝元科技发展有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned patented technologies are water-retaining or drought-resistant compound fertilizers formed by adding water-retaining agents and adhesives to coat the fertilizer surface. The preparation process is complicated, the water-retaining effect is limited, and the cost is high.
And because most water retaining agents are sensitive to salt, the water retention effect will be greatly reduced after absorbing nutrients

Method used

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  • A kind of corn compound fertilizer and preparation method thereof
  • A kind of corn compound fertilizer and preparation method thereof
  • A kind of corn compound fertilizer and preparation method thereof

Examples

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preparation example Construction

[0041] Wherein, the preparation method of cyclodextrin superabsorbent resin of the present invention comprises the following steps:

[0042] a. Mix starch and cyclodextrin with water evenly, and add lye to gelatinize under the protection of inert gas;

[0043] b. Add lye dropwise to acrylic acid to neutralize to obtain acrylic acid / acrylic acid salt mixed solution;

[0044] c. Under the protection of an inert gas, mix the gelatinized starch obtained in step a, the acrylic acid / acrylate mixed solution obtained in step b, and the initiator evenly, raise the temperature to 50-55°C and keep it for 2 hours, add absolute ethanol to collect white viscous precipitation;

[0045] Wherein step a and step b are in no particular order.

[0046] The cyclodextrin superabsorbent resin of the present invention is obtained through the graft copolymerization reaction of starch and acrylic acid (sodium) monomer. That is, through the initiator, the hydrogen on the tertiary carbon of the starch...

Embodiment 1

[0092] Embodiment 1, the preparation of cyclodextrin superabsorbent resin of the present invention

[0093] 1. Add 10.0g of cornstarch and 0.1g of β-cyclodextrin into a 100ml four-neck flask, then add 40ml of distilled water, and start electric stirring at the same time;

[0094] 2. Take 20ml of distilled water, place it in a 50ml beaker, weigh 0.5g of sodium hydroxide into the beaker, shake the beaker gently to dissolve the sodium hydroxide completely, and prepare a sodium hydroxide solution with a concentration of 0.5mol / L. The solution was placed in a fume hood for cooling; the sodium hydroxide solution cooled to room temperature was slowly added to the four-necked flask under stirring, and the gelatinization of the starch was carried out; nitrogen protection was always passed during the process;

[0095] 3. Measure 22ml of distilled water, place it in a 50ml beaker, weigh 2.6g of sodium hydroxide into the beaker, shake the beaker gently to dissolve the sodium hydroxide com...

Embodiment 2

[0100] Embodiment 2, the preparation of corn compound fertilizer (N:P 2 o 5 :K 2 O=27:6:7)

[0101] 60% potassium chloride 115kg, 57% monoammonium phosphate 135kg, 46.2% urea 420kg, 23.5% ammonium chloride 200kg, ammonium sulfate 25kg, ammonium bicarbonate 30kg, composite trace element 30kg, bentonite (purchased from Henan) 45kg, embodiment 1. 30kg of the cyclodextrin superabsorbent resin prepared, wherein the compound trace element is composed of 15kg of amino acid zinc, 5kg of boric acid, 1kg of amino acid copper, 3kg of amino acid iron, and 6kg of fulvic acid.

[0102] Preparation method: Mix organic-inorganic compound fertilizer evenly with all ingredients except cyclodextrin superabsorbent resin; cyclodextrin superabsorbent resin is heated to 85°C in the storage tank and kept warm, and pumped to the granulator with a metering pump In the process, use compressed air to atomize and spray on the organic-inorganic compound fertilizer, rotate and granulate, and the granulat...

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Abstract

The invention belongs to the field of fertilizers, particularly relates to a compound fertilizer for corns and a preparation method thereof, and more particularly relates to a water and nutrient preserving sustained-release compound fertilizer for corns and a preparation method thereof. The compound fertilizer comprises a super absorbent resin and an organic-inorganic compound fertilizer, wherein the organic-inorganic compound fertilizer can effectively supplement nutrients needed for the growth of corns, the super absorbent resin has the functions of preserving water and nutrients, and the super absorbent resin and the organic-inorganic compound fertilizer are mixed together to lead to the effective increase of particle strength and the ball forming rate of the compound fertilizer and the reduction of energy consumption. The compound fertilizer for corns has good water and nutrient preserving effects so that the irrigation times can be reduced, and the compound fertilizer is applied once and does not need to be applied additionally so that time and labor can be saved. In addition, the compound fertilizer for corns is capable of increasing the yield of corns and the income and is suitable for a simple and economical planting pattern. The process for preparing the compound fertilizer for corns is simple, the raw materials are wide in source, and the compound fertilizer for corns is low in cost.

Description

technical field [0001] The invention belongs to the field of fertilizers, and in particular relates to a corn compound fertilizer and a preparation method thereof, in particular to a water-retaining and fertilizer-retaining slow-release corn compound fertilizer and a preparation method thereof. Background technique [0002] Corn is one of the most widely distributed food crops in the world, and its planting area ranks third after wheat and rice. The planting range is from 58°N (Canada and Russia) to 40°S (South America). There is corn ripening every month throughout the year in the world. Maize has a large planting area in China and is widely distributed. It is one of the main grains for people in northern and southwestern mountainous areas and other dry valley areas of China. [0003] The growth of corn is inseparable from water, nutrients (nutrients), air and sunlight. The absorption of nutrients by corn is completed by absorbing nutrients while absorbing water. Without ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00
CPCC05G3/70C05G3/90C05G5/40
Inventor 陈天河龚有初徐汝民龚岳卫志超
Owner 安徽中科帝元科技发展有限公司
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