Nitrogen fertilizer synergist, preparation method and application

A technology of nitrogen fertilizer synergist and fertilizer, which is applied in application, nitrogen fertilizer, fertilization equipment, etc., can solve the problems of low nitrogen fertilizer utilization efficiency, achieve the effects of simple manufacturing process, convenient use, and reduced nitrogen loss

Pending Publication Date: 2022-05-27
QINGDAO AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0015] In order to overcome the problem of low utilization efficiency of nitrogen fertilizer in related technologies, t...

Method used

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  • Nitrogen fertilizer synergist, preparation method and application
  • Nitrogen fertilizer synergist, preparation method and application
  • Nitrogen fertilizer synergist, preparation method and application

Examples

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preparation example Construction

[0046] like figure 1 As shown, the preparation method of the nitrogen fertilizer synergist provided by the embodiment of the present invention comprises the following steps:

[0047] S101, adding acrylamide, 2-methylenesuccinic anhydride, distilled water and an initiator potassium persulfate to the reaction kettle and stirring to react, and preparing a mixed aqueous solution of acrylamide and 2-methylenesuccinic anhydride;

[0048] S102, after being cooled to room temperature, continue to slowly add polyaspartic acid to the mixed aqueous solution according to the ratio of parts by weight, and stir at room temperature to obtain a mixed solution;

[0049] S103, pouring the mixed solution into a constant temperature vibrator and fully mixing to obtain a nitrogen fertilizer synergist.

[0050] The nitrogen fertilizer synergist prepared by the present invention can be used for production by spraying on the surface of urea and air-drying. figure 2 It is a comparison diagram of th...

Embodiment 1

[0053] Each component of the raw material of the nitrogen fertilizer synergist provided in the embodiment of the present invention is composed of the following components by weight:

[0054] 8-10 parts of polyaspartic acid, 12-15 parts of 2-methylenesuccinic anhydride, 6-7.5 parts of acrylamide, 0.2-0.6 parts of potassium persulfate, and 800-1200 parts of distilled water.

[0055] The preparation method of the nitrogen fertilizer synergist provided in the embodiment of the present invention is as follows:

[0056] Acrylamide, 2-methylenesuccinic anhydride, distilled water and initiator potassium persulfate are added to the reaction kettle in a proportion of 1:2:80:0.1 by weight, and the temperature is controlled at 30-80°C, and the reaction is performed for 15- In 20 minutes, a mixed aqueous solution of acrylamide and 2-methylenesuccinic anhydride was prepared. After cooling to room temperature, polyaspartic acid was slowly added according to the weight ratio of acrylamide to...

Embodiment 2

[0072] The nitrogen fertilizer synergist prepared according to the raw materials of Example 1 was sprayed on the surface of the fertilizer to obtain a synergistic compound fertilizer, which was used for the corn growth and development test, and the tested variety was Qiule 218. Two treatments were set up in the experiment, namely control treatment (CK): compound fertilizer (nitrogen: phosphorus: potassium = 20: 15: 10) 50kg / 667m 2 , without synergist; treatment (T1): synergistic compound fertilizer (nitrogen: phosphorus: potassium = 20: 15: 10) 50kg / 667m 2 . Corn was sown in mid-to-late June, with 4,800 plants per acre, with a large row spacing of 80cm, a small row spacing of 50cm, and a plant spacing of 18cm. The experiment adopts an incomplete randomized block design, and each treatment area is 0.8*130=114m 2 , and each treatment was repeated 3 times. In addition, all fertilizers are used as base fertilizer for one-time fertilization, and no top-dressing operation is perf...

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Abstract

The invention belongs to the technical field of fertilizers, and discloses a nitrogen fertilizer synergist, a preparation method and application, the nitrogen fertilizer synergist comprises the following components in parts by weight: 15-20 parts of polyaspartic acid, 10-15 parts of 2-methylene succinic anhydride, 5-7.5 parts of acrylamide, 0.2-0.6 part of potassium persulfate, and 800-1200 parts of distilled water; the preparation method of the nitrogen fertilizer synergist comprises the following steps: weighing the raw material components in parts by weight, carrying out a dissolution reaction in a reaction kettle, and fully and uniformly mixing the mixed solution through a constant-temperature vibrator to obtain the nitrogen fertilizer synergist. The effective component polyaspartic acid of the nitrogen fertilizer synergist disclosed by the invention has good ion adsorbability and biodegradability; after being copolymerized with 2-methylene succinic anhydride and acrylamide, the compound is coated on the surfaces of fertilizer particles to form a protective film, so that the volatilization of a nitrogen fertilizer and the leaching and runoff loss of the nitrogen fertilizer can be reduced, the slow release effect of the fertilizer is achieved, the growth and development of crops are promoted, and the yield and the utilization efficiency of the fertilizer are improved.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, and in particular relates to a nitrogen fertilizer synergist, a preparation method and an application. Background technique [0002] At present, nitrogen is an important component of biological macromolecules in plants, such as proteins, nucleic acids, chlorophyll and some hormones. The various physiological processes such as reduction, transport and metabolism of nitrogen absorbed by crops are coordinated with protein metabolism and carbon metabolism to form the basic process of plant life activities. Appropriately increasing the amount of nitrogen application within a certain range can improve the nitrogen utilization of crops. rate, regulate the photosynthetic capacity of crop leaves, and promote the accumulation of photosynthetic matter in the shoots, thereby increasing crop yield and dry matter accumulation. Urea is the nitrogen fertilizer with the highest nitrogen content and is suitab...

Claims

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Application Information

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IPC IPC(8): C05G3/40C05G3/80C05G5/12C05G5/30
CPCC05G3/40C05G3/80C05G5/37C05G5/38C05C9/00C05G5/12C05C9/005Y02P60/21
Inventor 石岩李亚君曹文芹
Owner QINGDAO AGRI UNIV
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