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Preparation method of synergistic nitrogen fertilizer

A production method and nitrogen fertilizer technology, which are applied in the directions of fertilization devices, fertilizer mixtures, and agricultural gas emission reduction, etc., can solve the problems of excessive fertilization, affecting the absorption and utilization of nitrogen fertilizer, and unbalanced nutrient ratio of fertilization, so as to improve the absorption and operation, The effect of improving utilization and improving activity

Inactive Publication Date: 2012-06-20
青岛丰泰海洋生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (2) The amount of fertilizer applied is too large
Due to the partial application of nitrogen fertilizer, the ratio of fertilization nutrients is unbalanced, which will also affect the absorption and utilization of nitrogen fertilizer by crops, so the nitrogen fertilizer use efficiency is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: Preparation of synergist alginic acid: Soak the kelp that has been weighed and eluted and dried with 6% hydrochloric acid for 10 hours, then remove the kelp, wash and drain until the pH of the water reaches 7.0; wash the kelp broken into 1cm 2 Add 12 times the amount of citric acid buffer solution with a pH value of 5.0, carry out enzymolysis at 50°C for 24 hours, add 90 U / g of cellulase; add 3% Na 2 CO 3 The solution was alkalized at 60°C for 3 hours; then diluted with 5 times the volume of water, stirred for 2 hours, and then separated into solid and liquid to obtain a light yellow filtrate, which was neutralized to pH=7.0 with 3% hydrochloric acid solution, filtered, and removed miscellaneous, concentrated to obtain 300g / L synergist alginic acid concentrate.

[0026] Measure the prepared synergist alginic acid and various raw materials, add 980kg of urea to the high tower raw material melter, dissolve, and after the urea is fully melted, add 60L of the ...

Embodiment 2

[0027] Example 2: Preparation of synergist alginic acid: Soak the kelp that has been weighed and eluted and dried with 10% hydrochloric acid for 8 hours, then remove the kelp, wash and drain until the pH of the water reaches 7.0; wash the kelp Broken into 0.5cm 2 Add 10 times the amount of citric acid buffer with a pH value of 5.0, carry out enzymatic hydrolysis at 50°C for 24 hours, add 70U / g of cellulase; add 4% Na 2 CO 3 The solution was alkalized at 60°C for 3 hours; then diluted with 5 times the volume of water, stirred for 2 hours, and then separated into solid and liquid to obtain a light yellow filtrate, which was neutralized to pH=7.0 with 3% hydrochloric acid solution, filtered, and removed Miscellaneous, concentration obtains the synergist alginic acid solution of 300g / L.

[0028] Measure the prepared synergist alginic acid and various raw materials, respectively add 500kg of urea, 200kg of ammonium nitrate, and 280kg of ammonium chloride to the high tower raw m...

Embodiment 3

[0029] Example 3: Preparation of synergist alginic acid: Soak the kelp that has been weighed and eluted and dried with 8% hydrochloric acid for 10 hours, then remove the kelp, wash and drain until the pH of the water reaches 7.0; wash the kelp broken into 1cm 2 Add 12 times the amount of citric acid buffer with a pH value of 5.0, carry out enzymatic hydrolysis at 50°C for 36 hours, add 120U / g of cellulase; add 3% Na 2 CO 3 The solution was alkalized at 60°C for 2 hours; then diluted with 5 times the volume of water, stirred for 2 hours, and then separated into solid and liquid to obtain a light yellow filtrate, which was neutralized to pH=7.0 with 3% hydrochloric acid solution, filtered and removed Miscellaneous, concentration obtains the synergist alginic acid solution of 300g / L.

[0030] Measure the prepared synergist alginic acid and various raw materials, add 400kg of ammonium nitrate and 580kg of ammonium sulfate to the high tower raw material melter respectively, and...

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Abstract

The invention discloses a preparation method of synergistic nitrogen fertilizer. The alginic acid used by the product is prepared from algae used as raw material through enzymolysis and is effectively compounded with nitrogen for granulation. The synergistic nitrogen fertilizer has sustained and controlled release effect, the utilization rate of nitrogen fertilizer can be significantly improved, the application amount of nitrogen fertilizer can be reduced, and the production cost of peasants can be greatly reduced. The synergistic nitrogen fertilizer conforms to the national organic agriculture, food security and other industrial policies. The utilization rate of the synergistic nitrogen fertilizer is 12-25% higher than the common nitrogen fertilizer. The content of the alginic acid serving as the nitrogen fertilizer synergist in the product accounts for 0.3-20%, and the content of the nitrogen accounts for 10-46%. The synergistic nitrogen fertilize can be widely applied to various cash crops such as field crops, fruits, vegetables and the like and can effectively improve the crop quality and increase the crop yield.

Description

technical field [0001] The invention belongs to the technical field of nitrogen fertilizer production, and in particular relates to a preparation method of synergistic nitrogen fertilizer. technical background [0002] At present, the amount of chemical fertilizer used in my country has doubled, but the increase in grain output has been less than 10%. The utilization rate of chemical fertilizers has dropped sharply, and farmers have increased production without increasing income. Excessive application of chemical fertilizers for a long time has damaged the ecological environment of farmland, soil physical and chemical forms, and soil microbiota to varying degrees, which has a great impact on the quality of agricultural products. Nitrogen fertilizers are especially prominent in varieties that are used as fertilizers. According to statistics, the nitrogen use efficiency of several major nitrogen fertilizer varieties is: ammonium bicarbonate 25% to 30%, urea 30% to 35%, ammoni...

Claims

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Application Information

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IPC IPC(8): C05G3/08C05G3/04C05G3/80C05G3/90
CPCY02P60/21
Inventor 李建林盛泰赵瑜
Owner 青岛丰泰海洋生物科技有限公司
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