Modified biomass charcoal base fertilizer and preparation method thereof

A technology of biomass charcoal and biomass charcoal powder, which is applied in the direction of alkaline orthophosphate fertilizers, nitrogen fertilizers, and potassium fertilizers, and can solve the problems of difficult utilization of agricultural and forestry waste resources, such as the loss of nutrient release of biochar and common fertilizers, and achieve The effect of long nutrient release period, maintaining soil fertility and simple preparation process

Inactive Publication Date: 2020-09-11
INST OF SOIL & FERTILIZER ANHUI ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the current problems of excessive application of chemical fertilizers, difficulties in resource utilization of agricultural and forestry wastes, and the problems that biochar will cause certain losses to the release of common fertilizer nutrients due to its high pH, ​​the invention provides a modified biochar-based fertilizer and its preparation method, in order to achieve the purpose of improving fertilizer efficiency, improving soil and effectively treating agricultural and forestry waste

Method used

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  • Modified biomass charcoal base fertilizer and preparation method thereof
  • Modified biomass charcoal base fertilizer and preparation method thereof
  • Modified biomass charcoal base fertilizer and preparation method thereof

Examples

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Effect test

Embodiment 1

[0034] Embodiment 1, the preparation of modified biomass charcoal base fertilizer

[0035] Firstly, the rice husk was carbonized under anaerobic conditions at 400°C for 3 hours, cooled and crushed through a 100-mesh sieve, and the resulting biochar powder was soaked in wood vinegar stock solution for 36 hours, taken out, filtered and dried. Then, take modified biomass charcoal powder 100g, diammonium phosphate 167g, urea 203g, potassium chloride 84g and 406g kaolin and mix evenly, pour into the disc granulator, the disc inclination angle is set to 45 °, the speed The temperature is 45r / min, the temperature is 50°C, and at the same time, 40g of 3% polyacrylamide aqueous solution is sprayed with a high-pressure nozzle. After the granulation is completed, it is dried and taken out to obtain a granular fertilizer with an average particle size of 2.5mm, which is the present invention. Modified biochar-based fertilizer.

Embodiment 2

[0036] Embodiment 2, the preparation of modified biomass charcoal base fertilizer

[0037] First, corn stalks were carbonized under anaerobic conditions at 400°C for 3 hours, cooled and crushed through a 100-mesh sieve, and the obtained biochar powder was soaked in wood vinegar stock solution for 36 hours, taken out, filtered and dried. Then, take the modified biomass charcoal powder 200g, diammonium phosphate 167g, urea 203g, potassium chloride 84g and 316g kaolin and mix evenly, pour into the disc granulator, the disc inclination angle is set to 45 °, the speed The temperature is 45r / min, the temperature is 50°C, and at the same time, 30g of 6% sodium alginate aqueous solution is sprayed with a high-pressure nozzle. After the granulation is completed, it is dried and taken out to obtain a granular fertilizer with an average particle diameter of 2.5mm, which is the present invention. Modified biochar-based fertilizer.

Embodiment 3

[0038] Embodiment 3, the preparation of modified biomass charcoal base fertilizer

[0039] Firstly, wheat straw was carbonized at 300°C for 3.5 hours under anaerobic conditions, and after cooling, it was pulverized through a 100-mesh sieve, and the obtained biomass charcoal powder was soaked in 2% sulfuric acid solution for 30 hours, taken out, filtered and dried. Then, weigh 400g of modified biomass carbon powder, 167g of diammonium phosphate, 203g of urea, 84g of potassium chloride and 106g of bentonite and mix them evenly. Put into the granulation in the roller extrusion granulator, the granulator rotating speed is set as 20r / min, after treating that granulation finishes, take out and dry, obtain the granular fertilizer that particle diameter is 2.5mm, promptly obtain the modified fertilizer of the present invention. Biochar based fertilizer.

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Abstract

The invention discloses a modified biomass charcoal base fertilizer and a preparation method thereof. The biomass charcoal fertilizer is mainly prepared from the following components in parts by weight: 5-40 parts of modified biomass charcoal powder, 10-20 parts of diammonium phosphate, 20-25 parts of urea, 6-10 parts of potassium chloride, 1-6 parts of a binder and 10-50 parts of filler; the preparation method comprises the following steps: crushing and mixing the raw materials and granulating the mixture by a fertilizer granulator. The biomass charcoal powder is modified, so that the pH value of the biomass charcoal powder can be effectively reduced, and the fertilizer efficiency cannot be reduced after the biomass charcoal powder is mixed with the alkaline fertilizer; the raw materialsare cheap and easy to obtain, the preparation process is simple, the nutrient release period is long, the soil fertility can be kept for a long time, and the modified biomass charcoal base fertilizeris an efficient and environment-friendly novel fertilizer.

Description

technical field [0001] The invention relates to the field of agricultural fertilizers, in particular to a modified biomass charcoal-based fertilizer and a preparation method thereof. Background technique [0002] In recent years, the application of chemical fertilizers in my country has increased rapidly along with the development of agriculture. According to statistics, in the past 30 years, my country's crop fertilizer application has more than tripled from 25.903 million tons in 1990 to 56.534 million tons in 2018. Although the seasonal utilization rate of nitrogen, phosphorus and potassium fertilizers has increased in recent years, there is still a big gap compared with developed countries in the world. Excessive application of chemical fertilizers will not only cause problems such as soil acidification and compaction, but also bring huge negative impacts on the ecological environment, such as water eutrophication and greenhouse gas emissions. In order to improve a s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/20C05G3/40C05G3/80C05G3/90C05G5/12
CPCC05B7/00C05G3/20C05G3/40C05G3/80C05G3/90C05G5/12C05C9/00C05D1/02C05D9/00C05F11/00Y02P60/21Y02A40/22
Inventor 王家宝孙义祥袁嫚嫚邬刚
Owner INST OF SOIL & FERTILIZER ANHUI ACAD OF AGRI SCI
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