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Synergistic stable compound fertilizer and preparation method thereof

A compound fertilizer and stability technology, applied in urea compound fertilizer, inorganic fertilizer, organic fertilizer and other directions, can solve the problem of low nitrogen utilization rate

Inactive Publication Date: 2021-01-12
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, it is urgent to increase the utilization rate of nitrogen fertilizer, reduce nitrogen loss, and produce more efficient nitrogen fertilizer varieties.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The ingredients of the synergistic and stable compound fertilizer include urea, superphosphate, potassium sulfate, magnesium, urease inhibitor, and 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; superphosphate is pre-dried by the direct heating method of flue gas parallel flow to reduce the moisture content to below 5%, and the inlet temperature of flue gas 400-500°C, and the material outlet...

Embodiment 2

[0031] The ingredients of the synergistic and stable compound fertilizer include urea, triple superphosphate, potassium chloride, sulfur, urease inhibitor, nitrification inhibitor, and γ-polyglutamic acid.

[0032] Based on 100 parts by weight (100 kg) of urea slurry, add 50 parts of superphosphate, 100 parts of potassium chloride, 8 parts of sulfur, 2.5 parts of ammonium thiosulfate, 2.5 parts of 3,4-lutyl Azole phosphate, 300-500 ml (here, 400 ml) of methanol with a volume concentration of 37% capable of dissolving ammonium thiosulfate and 3,4-dimethylpyrazole phosphate, and 20 parts of γ-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 sustained release agent), fully mixed; 20 parts of γ-polyglutamic acid was dissolved in water and mixed...

Embodiment 3

[0036] The ingredients of the synergistic and stable compound fertilizer include urea, superphosphate, potassium chloride, nitrification inhibitor, zinc, and γ-polyglutamic acid.

[0037] Based on 100 parts (100 kg) of urea slurry, add 50 parts of superphosphate, 100 parts of potassium chloride, 7 parts of zinc, and 5 parts of 3,4-dimethylpyrazole phosphate to make 3,4 - Dimethylpyrazole phosphate dissolved in 37% by volume methanol, and 20 parts of gamma-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 In the urea slurry, use the ...

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Abstract

The invention relates to a synergistic stable compound fertilizer and a preparation method thereof. The fertilizer comprises the following components: nitrogen fertilizer, phosphate fertilizer, potashfertilizer, medium trace elements, a nitrogen regulating synergist (urease inhibitor and / or nitrification inhibitor) and a carbon source synergist, wherein the nitrogen fertilizer is urea, the phosphate fertilizer comprises calcium superphosphate and triple superphosphate, the potash fertilizer comprises potassium chloride and potassium sulfate, the medium trace elements comprise calcium, magnesium, sulfur, boron, silicon, iron and zinc, and the weight part ratio of the nitrogen fertilizer to the phosphate fertilizer to the potash fertilizer to the medium trace elements to the nitrogen regulating synergist to the carbon synergist is 1: 0.3-0.5: 0.8-1: 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 the release rate of the nitrogen fertilizer are regulated, and various nutritional requirements of crops in different growth periods are met. Greenhouse gas emission and nitrogenleaching loss are reduced, and the compound fertilizer is a novel synergistic stable compound 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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IPC IPC(8): C05G3/90C05G3/80C05G3/70C05G3/40C05G3/00C05G5/12
CPCC05G3/90C05G3/80C05G3/70C05G3/40C05G3/00C05G5/12C05B1/02C05B1/04C05C9/00C05D1/02C05D5/00C05D9/02Y02P60/21C05G1/00C05F11/02
Inventor 张丽莉武志杰
Owner SHENYANG INST OF APPLIED ECOLOGY - CHINESE ACAD OF SCI
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