Synergistic urea containing gamma-polyglutamic acid and biochemical potassium fulvic acid as well as preparation method and application of synergistic urea

A technology of biochemical potassium fulvic acid and polyglutamic acid, applied in application, urea compound fertilizer, nitrogen fertilizer and other directions, can solve the problems of aggravating environmental pollution, increasing agricultural production cost, waste of resources, etc. Breathing, growth-promoting effect

Inactive Publication Date: 2018-01-30
四川美丰农资化工有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Nitrogen fertilizer is one of the indispensable main fertilizers in agricultural production, and urea is the nitrogen fertilizer with the highest nitrogen content and the largest amount of use. Due to various reasons, the average utilization rate of urea is lower than 30%. This method of fertilization , which leads to a large waste of resources, increases the cost of agricultural production, and aggravates the pollution of the environment

Method used

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  • Synergistic urea containing gamma-polyglutamic acid and biochemical potassium fulvic acid as well as preparation method and application of synergistic urea

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The aqueous solution of γ-polyglutamic acid can be divided into three categories according to the type: ① γ-polyglutamic acid content 3.5%; ② γ-polyglutamic acid content 7.0%, brown liquid; ③ γ-polyglutamic acid content 10.0%, brown liquid. The pH of the three water preparations is all between 6.0 and 7.5.

[0029] Synergistic urea product A:

[0030] a. Add 50% biochemical potassium fulvic acid in the type ① water preparation by weight percentage, and mix evenly to form a composite water preparation.

[0031] b. Add 0.45% by weight of the composite water agent made in step a to the urea solution in molten state

[0032] c. Spray the mixed liquid prepared in step b into a granulation tower for granulation to produce synergistic urea product A.

[0033] Synergistic urea product B:

[0034] d. Add 50% biochemical potassium fulvic acid in the weight percentage of type ② water agent, and mix evenly to form a compound water agent.

[0035] e. Add 0.25% by weight of the ...

Embodiment 2

[0047] The synergistic urea of ​​the present invention is used in a control experiment of fertilizing cornfields.

[0048] The synergistic urea series products of the present invention are applied to the corn fertilization control experiment. The three test groups and one control group had the same sowing and field management techniques, and their test methods and final yields were as follows:

[0049] Table 2

[0050] fertilizer treatment name

[0051] The results showed that the final yield of maize treated with three kinds of synergistic urea was basically the same as the yield of maize treated with normal application of urea while reducing the amount of urea used by nearly 1 / 3.

Embodiment 3

[0053] The synergistic urea of ​​the present invention is fertilized in a wheat field.

[0054] The wheat field covers an area of ​​4 mu, and the treatment and control use the same amount of urea, and the management measures such as sowing and applying base fertilizer are the same. In 2014, the wheat was divided into four plots to carry out the control experiment of urea topdressing during the greening period:

[0055] table 3

[0056] Fertilizer name

[0057] The results showed that under the same urea application rate, the wheat in the three treatment groups was higher than the control group in terms of plant height, number of ears per mu, number of grains per ear, thousand-grain weight and total yield.

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Abstract

The invention relates to synergistic urea containing gamma-polyglutamic acid and biochemical potassium fulvic acid. The synergistic urea is characterized by containing 0.01%-0.03wt% of the gamma-polyglutamic acid, 0.05%-0.15wt% of the biochemical potassium fulvic acid, and the balance of urea; and the synergistic urea is obtained by mixing the gamma-polyglutamic acid, the biochemical potassium fulvic acid and the molten urea, and performing granulation. The invention also discloses a preparation method and application of the synergistic urea. In the synergistic urea provided by the invention,the gamma-polyglutamic acid and the biochemical potassium fulvic acid have a synergistic effect, the loss of nutrients in soil is effectively reduced, and the utilization rate of fertilizer nutrientsis improved; and the synergistic urea can not only improve the photosynthetic utilization rate of crops, promote root growth and improve lodging resistance, but also improve the microbial structure inthe soil, block the soil moisture and effectively improve the hardening conditions of the soil.

Description

technical field [0001] The invention relates to a novel synergistic urea fertilizer, in particular to a synergistic urea based on gamma-polyglutamic acid and biochemical potassium fulvate, a preparation method and application thereof, and belongs to the field of agricultural chemical fertilizers. Background technique [0002] Nitrogen fertilizer is one of the indispensable main fertilizers in agricultural production, and urea is the nitrogen fertilizer with the highest nitrogen content and the largest amount of use. Due to various reasons, the average utilization rate of urea is lower than 30%. This method of fertilization , which leads to a large waste of resources, increases the cost of agricultural production, and aggravates the pollution of the environment. [0003] γ-polyglutamic acid is a homopolyamino acid formed by glutamic acid monomers linked by amide bonds. It has super strong chelating and adsorption capacity, super high water absorption and moisturizing capacity...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/04C05G3/08C05C9/00C05G3/80C05G3/90
Inventor 张晓彬陈润龙华廖志军陶家明刘志刚罗雪峰冯小海詹凤韩飞
Owner 四川美丰农资化工有限责任公司
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