Nitrogen fertilizer combined inhibiting agent and its uses

A combined inhibitor and nitrogen fertilizer technology, applied in the application, fertilizer mixture, fertilization device and other directions, can solve the problems of complex process, high cost, unsatisfactory fertilizer efficiency, etc., and achieve the effect of increasing fertilizer efficiency, flexible use, and improving nitrogen utilization rate.

Inactive Publication Date: 2006-07-26
SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its high cost, complex process, or unsatisfactory fertilizer efficiency and environmental problems, it has not been popularized and applied.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1 Coating Nitrogen-Containing (Granular) Fertilizers with Liquid Combination Inhibitors

[0020] In the liquid combined inhibitor, the weight ratios of dicyandiamide and calcium cyanamide are 3:1, 2:1, 1:1, 1:2, 1:3, 1:4, 1:5 respectively;

[0021] Nitrogen-containing (granular) fertilizer is urea, and the weight ratio of urea to the above-mentioned dicyandiamide and calcium cyanamide is 54%, 60%, 70%, 80%, 85%, 90%, and 95% respectively , the combination inhibitor is homogeneously mixed with urea.

Embodiment 2

[0023] Add the liquid combination inhibitor to the nitrogen fertilizer production process, mix it homogeneously with the liquid nitrogen-containing material in the system, and produce the nitrogen fertilizer containing the combination inhibitor;

[0024] The nitrogen-containing fertilizer is ammonium bicarbonate, and the weight content of ammonium bicarbonate is 99%. In the liquid combined inhibitor, the weight ratio of dicyandiamide to calcium cyanamide is 3.5:1;

[0025] The nitrogen-containing fertilizer is ammonium sulfate, and the weight content of ammonium sulfate is 96%. In the liquid combined inhibitor, the weight ratio of dicyandiamide to calcium cyanamide is 1.5:1;

[0026] The nitrogen-containing fertilizer is ammonium nitrate, and the weight content of ammonium nitrate is 92%. In the liquid combined inhibitor, the weight ratio of dicyandiamide to calcium cyanamide is 1:2.5;

[0027] The nitrogen-containing fertilizer is ammonium chloride, and the weight content of ...

Embodiment 3

[0031] Use liquid combination inhibitor and liquid nitrogen fertilizer to combine homogeneously to produce liquid slow-release and long-acting fertilizer;

[0032] The nitrogen-containing fertilizer is ammonium chloride, and the ammonium chloride has a weight content of 86%. In the liquid combined inhibitor, the weight ratio of dicyandiamide to calcium cyanamide is 1:4.2, and the weight content of lignite is 95%;

[0033] The nitrogen-containing fertilizer is ammonium phosphate, and the ammonium phosphate weight content is 92%. In the liquid combination inhibitor, the weight ratio of dicyandiamide to calcium cyanamide is 1:6.1, and the weight content of lignite is 90%;

[0034] The nitrogen-containing fertilizer is liquid ammonia, and the weight content of liquid ammonia is 73%. In the liquid combination inhibitor, the weight ratio of dicyandiamide and calcium cyanamide is 1:5.4, and the weight content of zeolite is 70%; The plant nutrients phosphorus, potassium, copper, zinc,...

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PUM

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Abstract

Disclosed is a nitrogenous fertilizer inhibiting agent and the use, which comprises 1-50wt% of dicyandiamide and 50-99wt% of calcium cyanamide, the inhibiting agent can be bonded with N-containing inorganic fertilizer such as ammonium phosphate, ammonium nitrate, ammonia sulfate, urea, liquid ammonia for synergic effect to increase nitrogen utilization coefficient.

Description

technical field [0001] The invention relates to a fertilizer additive, in particular to a combination inhibitor of nitrogen fertilizer and its application. Background technique [0002] At present, my country has become the largest country in the world in the consumption and production of chemical fertilizers, and nitrogen fertilizer is the most widely used fertilizer variety in agricultural production, and its production and application are increasing year by year, especially in some economically developed areas. Abandon the tradition of using organic fertilizers. Instead, large amounts of chemical fertilizers have been used. According to statistics, the domestic nitrogen fertilizer consumption in 2004 was about 21.6 million tons. The total consumption of chemical fertilizers is about 44 million tons, and China's chemical fertilizer production has reached more than 38 million tons, accounting for more than 1 / 5 of the world's total chemical fertilizer production, ranking fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/08C05G3/90
Inventor 李荣华刘友民
Owner SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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