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Charcoal-based sustained-release compound fertilizer for tobacco and preparation method thereof

A technology of slow-release compound fertilizer and biochar, which is applied in the field of compound fertilizer, can solve the problems of not being able to meet the needs of crop growth and development, unfavorable quality of high-quality tobacco leaves, and low nutrient utilization rate, achieve excellent slow-release effect, and improve the restoration of heavy metal pollution in soil , the effect of large specific surface area

Inactive Publication Date: 2017-11-03
广西壮族自治区烟草公司百色市公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After these fertilizers are applied to the soil, on the one hand they cannot be fully absorbed and utilized by the crops, and a large part of them will be leached, volatilized or fixed by the soil and transformed into forms that cannot be absorbed by the crops, resulting in huge waste; on the other hand, it is easy to Causes the tobacco leaves to be green and not easy to fall yellow, which is not conducive to the formation of high-quality tobacco leaves
Conventional compound fertilizer releases nutrients quickly and is easy to be leached, resulting in low nutrient utilization rate and short fertilizer effect period, which cannot meet the needs of crop growth and development

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A biochar-based slow-release compound fertilizer for tobacco, consisting of the following raw materials in parts by weight: 50 parts of potassium chloride, 250 parts of potassium sulfate, 50 parts of potassium nitrate, 130 parts of monoammonium phosphate, 160 parts of ammonium nitrate phosphorus, Na 2 B 4 o 7 10H 2 O30 parts, ZnS0 4 ·7H 2 O30 parts, MgS0 4 ·7H 2 O 80 parts, biochar-based 140 parts.

[0027] The preparation method of biochar base comprises the following steps:

[0028] (1) Crush the rice husk to particles with a particle size of 3-5mm;

[0029] (2) Heat the solid heat carrier in the circulating fluidized bed to 750°C, then feed the crushed rice husks into the bottom feeder of the circulating fluidized bed, and the rice husks will heat up to 500°C within 1~2s A thermal cracking reaction occurs, and when the rice husk reaches the top of the circulating fluidized bed, it is separated by a cyclone separator to obtain mixed steam and solid matter, and...

Embodiment 2

[0032] A biochar-based slow-release compound fertilizer for tobacco, consisting of the following raw materials in parts by weight: 40 parts of potassium chloride, 260 parts of potassium sulfate, 40 parts of potassium nitrate, 120 parts of monoammonium phosphate, 150 parts of ammonium nitrate phosphorus, Na 2 B 4 o 7 10H 2 O25 parts, ZnS0 4 ·7H 2 O32 parts, MgS0 4 ·7H 2 O 83 parts, biochar-based 150 parts.

[0033] The preparation method of biochar base comprises the following steps:

[0034] (1) Crush the rice husk to particles with a particle size of 3-5mm;

[0035](2) Heat the solid heat carrier in the circulating fluidized bed to 800°C, then send the crushed rice husks to the bottom feeder of the circulating fluidized bed, and the rice husks are heated to 505°C within 1~2s A thermal cracking reaction occurs, and when the rice husks reach the top of the circulating fluidized bed, a cyclone separator is performed to obtain mixed steam and solid matter, and the solid m...

Embodiment 3

[0038] A biochar-based slow-release compound fertilizer for tobacco is composed of the following raw materials by weight: 50 parts of potassium chloride, 250 parts of potassium sulfate, 60 parts of potassium nitrate, 140 parts of monoammonium phosphate, 170 parts of ammonium nitrate, 170 parts of Na 2 B 4 O 7 ·10H 2 O32 parts, ZnS0 4 ·7H 2 O25 parts, MgS0 4 ·7H 2 O 75 parts, biochar base 125 parts.

[0039] The preparation method of biochar includes the following steps:

[0040] (1) Pulverize the rice husks to particles with a particle size of 3~5mm;

[0041] (2) Heat the solid heat carrier in the circulating fluidized bed to 700°C, then send the crushed rice husks to the bottom feeder of the circulating fluidized bed, and the rice husks are heated to 495°C within 1~2s A thermal cracking reaction occurs, and when the rice husks reach the top of the circulating fluidized bed, a cyclone separator is performed to obtain mixed steam and solid matter, and the solid matter i...

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Abstract

The invention discloses charcoal-based sustained-release compound fertilizer which is composed of, by weight, 600-650 parts of nitrogen phosphorus potassium compound fertilizer, 25-32 parts of boron fertilizer, 25-32 parts of zinc fertilizer, 70-85 parts of magnesium fertilizer and 125-150 parts of charcoal base, a weight ratio of N:P2O5:K2O in the nitrogen phosphorus potassium compound fertilizer is 6-8:6-8:16-19, and the charcoal base is prepared by subjecting rice husk to thermal cracking reaction at 700-800 DEG C. by adopting the charcoal-based sustained-release compound fertilizer, soil structure can be improved effectively, nutritional ingredient release time of the fertilizer in tobacco field soil can be delayed, utilization rate of nutritional ingredients can be increased effectively, and the objective of improving yield and quality of tobacco leaves is achieved finally.

Description

technical field [0001] The invention relates to the technical field of compound fertilizers, in particular to a biochar-based slow-release compound fertilizer for tobacco. Background technique [0002] The pros and cons of tobacco quality are the results of the combined effects of variety genetics, ecological environment and cultivation techniques. Soil is one of the main ecological environmental factors, and tobacco is sensitive to soil conditions. Soil type and nutrient supply characteristics in the soil are closely related to the yield, chemical quality and industrial availability of tobacco leaves. Therefore, it is necessary to improve the quality of tobacco leaves from the perspective of fertilizer application. [0003] Tobacco planting soil in Jingxi is mainly paddy soil. Tobacco is grown on paddy soil, which grows fast in the early stage and easy to lose fertilizer in the later stage. Some tobacco farmers will apply a large amount of chemical fertilizers in the late...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/04C05G3/00C01B32/336C01B32/324C05G3/80
CPCC05B1/04C05G3/00C05G3/80C05B7/00C05C1/00C05C5/02C05D1/02C05D5/00C05D9/00C05D9/02
Inventor 林北森范东升韦忠李崇军刘维川高华军年夫照罗刚周文亮农世英赖洪敏韦学平陆亚春刘春萍莫光森
Owner 广西壮族自治区烟草公司百色市公司
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