Rare earth urea and preparation technique

A preparation process, urea technology, applied in the field of agricultural urea and its preparation process, can solve problems such as unrealized, and achieve the effects of improving physiological activity, alleviating side effects, and suppressing side effects of pesticides

Inactive Publication Date: 2009-01-14
赵佳付
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Then the above two theories can be combined to give full play to the effects of urea and rare earth elements, and can overcome the shortcomings of urea itself, but such a combination has not been realized in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The rare earth urea provided in this embodiment comprises the following ingredients in parts by weight:

[0019] 75 parts of urea, 25 parts of calcium earth, 0.15 parts of rare earth oxide, 0.76 parts of 2-ammonia-4-chloro-b-picoline.

[0020] The manufacturing process of the present embodiment rare earth urea is:

[0021] (1) Put urea in the wrapping machine, and then spray the 2-ammonia-4-chloro-b-picoline aqueous solution on the surface of the urea particles in the continuously rotating wrapping machine, so that the urea particles are in a wet state;

[0022] (2) Spray the uniformly mixed rare earth oxide powder on the urea particles to form a rare earth coating;

[0023] (3) Package after drying.

Embodiment 2

[0025] The rare earth urea provided in this embodiment comprises the following ingredients in parts by weight:

[0026] 85 parts of urea, 15 parts of calcium earth, 0.05 parts of rare earth oxide, 3 parts of 2-ammonia-4-chloro-b-picoline.

Embodiment 3

[0028] The rare earth urea provided in this embodiment comprises the following ingredients in parts by weight:

[0029] 85 parts of urea, 15 parts of calcium earth, 0.05 parts of rare earth oxide, 2.1 parts of 2-ammonia-4-chloro-b-picoline.

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Abstract

The invention discloses a rare earth urea, and the rare earth urea contains the following ingredients, by weight: 75 to 85 parts of urea, 15 to 25 parts of calcium clay, 0.05 to 0.15 part of oxidation rare earth and a nitrification inhibitor. The system urea has a preparation process that: the urea is positioned into a wrapping machine, then the nitrification inhibitor aqueous solution is sprayed on the surfaces of urea particles in the wrapping machine rotating continuously to make the urea particles show the moisture state; the evenly mixed oxidation rare earth powders are sprinkled on the urea particles to form a rare earth wrapping layer; and the mixture is packaged after being dried. The rare earth urea provided in the invention can guarantee the nitrogen nutrition required by crops during growth, and can also release side effects brought by the long-term spreading of chemical fertilizers to a certain extent.

Description

technical field [0001] The invention relates to urea and a preparation process thereof, in particular to an agricultural urea and a preparation process thereof. Background technique [0002] Urea is a chemically synthesized organic amide nitrogen fertilizer, which can increase the yield of crops and is suitable for various soils and crops. In recent years, with the increase of urea application, the positive role of urea in agricultural production has become more and more obvious, and people are also reflecting on some problems that may be caused by the large and continuous use of urea. The Food and Agriculture Organization of the United Nations and the International Fertilizer Development Center have clearly pointed out that when the use of urea increases to a certain level, the continuous increase in urea use has little effect on increasing crop production. The amount of chemical fertilizer application gradually tends to be stable, while continuous large-scale use of urea,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/08C05C9/00C05G3/90
CPCY02P60/21
Inventor 赵佳付
Owner 赵佳付
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