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Synergistic stable nitrogenous fertilizer and preparation method thereof

A stable, nitrogen fertilizer technology, applied in nitrogen fertilizers, calcareous fertilizers, inorganic fertilizers, etc., can solve the problem of low nitrogen fertilizer utilization rate, and achieve the effect of improving nitrogen fertilizer utilization rate, increasing yield, and increasing effective concentration

Inactive Publication Date: 2021-02-05
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

Under the current form, the demand for nitrogen fertilizer is only increasing, and the utilization rate of nitrogen fertilizer is low. Whether it is from the perspective of economic interests or environmental protection, improving the utilization rate of nitrogen fertilizer and reducing nitrogen loss is a problem that needs to be solved urgently, and the synergistic and stable type The production and application of nitrogen fertilizer is an effective strategy to solve this problem

Method used

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  • Synergistic stable nitrogenous fertilizer and preparation method thereof
  • Synergistic stable nitrogenous fertilizer and preparation method thereof
  • Synergistic stable nitrogenous fertilizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The composition of synergistic stable nitrogen fertilizer includes urea, magnesium, urease inhibitor, polyglutamic acid.

[0027] Based on 100 parts by weight of urea slurry, add 50 parts of superphosphate, 100 parts of potassium sulfate, 8 parts of magnesium, 5 parts of ammonium thiosulfate, methanol with a volume concentration of 37% that can make ammonium thiosulfate dissolve, and 20 parts Gamma-polyglutamic acid.

[0028] Preparation:

[0029] Based on 100 parts (kg) of urea slurry (molten urea), 5 parts of ammonium thiosulfate are dissolved in 300-500ml (400ml volume concentration here) of 37% methanol (as the carrier of the slow-release agent), fully mixed Dissolve 20 parts of γ-polyglutamic acid in water and mix evenly; add the two and 8 parts of magnesium into the urea slurry, and use the equipment and process for producing ordinary granular urea to produce a particle size of 0.85-2.8 through granulation mm≥90%, a synergistic and stable nitrogen fertilizer wit...

Embodiment 2

[0031] The ingredients of the synergistic stable nitrogen fertilizer include urea, sulfur, urease inhibitor, nitrification inhibitor, and γ-polyglutamic acid.

[0032] Based on 100 parts by weight (100 kilograms) of urea slurry, add 8 parts of sulfur, 2.5 parts of ammonium thiosulfate, and 2.5 parts of 3,4-dimethylpyrazole phosphate to make ammonium thiosulfate and 3,4 - 300-500 ml (here 400 ml) of 37% volume concentration of methanol in which dimethylpyrazole phosphate is dissolved, and 20 parts of gamma-polyglutamic acid.

[0033] Preparation:

[0034] Based on 100 parts of urea slurry (melted urea), 2.5 parts of ammonium thiosulfate and 2.5 parts of 3,4-dimethylpyrazole phosphate were dissolved in 300-500ml (400ml here) of 37% of the volume concentration Methanol (as the carrier of the slow-release agent), mix well; dissolve 20 parts of γ-polyglutamic acid in water and mix evenly; calculate the flow rate through the metering pump, and add the above two mixed solutions and ...

Embodiment 3

[0036] The composition of synergistic stable nitrogen fertilizer includes urea, nitrification inhibitor, zinc, gamma-polyglutamic acid.

[0037] Based on 100 parts (100 kg) of urea slurry, add 7 parts of zinc and 5 parts of 3,4-dimethylpyrazole phosphate, and the volume concentration that can dissolve 3,4-dimethylpyrazole phosphate is 37 % methanol, and 20 parts of γ-polyglutamic acid.

[0038] Preparation:

[0039] Based on 100 parts of urea slurry (molten urea), 5 parts of 3,4-dimethylpyrazole phosphate are dissolved in 300-500ml (400ml here) of 37% methanol (as a slow-release agent) of volume concentration Carrier), fully mixed; dissolve 20 parts of polyglutamic acid in water and mix evenly; calculate the flow rate through the metering pump, add the above two mixed solutions, 7 parts of zinc, 50 parts of superphosphate, and 100 parts of potassium chloride Into the urea slurry, use the equipment and process for producing ordinary granular urea, and produce a synergistic an...

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Abstract

The invention relates to a synergistic stable nitrogen fertilizer and a preparation method thereof. The fertilizer comprises the following components: a nitrogen fertilizer, medium trace elements, a nitrogen regulating synergist (urease inhibitor and / or nitrification inhibitor) and a carbon source synergist, wherein the nitrogen fertilizer is urea, and the medium trace elements comprise calcium, magnesium, sulfur, boron, silicon, iron and zinc. The weight part ratio of the nitrogen fertilizer to the medium trace elements to the nitrogen regulating synergist to the carbon synergist is 1: 0.05-0.1: 0.001-0.1: 0.1-0.3. By adding a certain amount of the carbon synergist and the nitrogen regulating synergist into the fertilizer, the release time and rate of the nitrogen fertilizer can be regulated, the fertilizer efficiency is slow and stable, the fertilizer meets various nutritional requirements of crops in different growth periods, solves the contradiction between crop fertilizer requirement and soil fertilizer supply, reduces greenhouse gas emission and nitrogen leaching loss, and is a novel synergistic stable nitrogen fertilizer.

Description

technical field [0001] The invention relates to the field of soil and chemical fertilizers. Specifically, it can not only provide a certain amount of nitrogen source for soil, but also supplement the loss and waste of nitrogen caused by insufficient carbon source. The nitrogen source is in the form of microbial biomass nitrogen and fixed ammonium It is fixed in the soil, promotes crop growth, and is a stable fertilizer that meets the nutritional needs of crops at each growth stage. At the same time, it can also reduce greenhouse gas emissions and protect the environment. Background technique [0002] Nitrogen is one of the essential nutrients for crop growth. The application of nitrogen fertilizer plays an important role in improving the yield and quality of crops. The amount of nitrogen fertilizer application accounts for about 60% of the total amount of chemical fertilizers. However, the utilization rate of nitrogen fertilizer in our country is gradually decreasing, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/40C05G3/80C05G5/12
CPCC05G3/00C05G3/40C05G3/80C05B1/02C05B17/00C05G5/12C05C3/00C05C9/00C05C11/00C05D1/02C05D5/00C05D9/02C05G3/90C05C9/005Y02P60/21C05D3/00
Inventor 张丽莉武志杰
Owner SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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