Fertilizer special for improving physical and chemical properties of tobacco planting soil

A special fertilizer technology with physical and chemical properties, applied in the direction of alkaline orthophosphate fertilizer, fertilizer mixture, ammonium orthophosphate fertilizer, etc., can solve the problems of soil carbon storage capacity decline, poor soil physical and chemical properties, soil compaction, etc.

Inactive Publication Date: 2019-11-12
CHINA TOBACCO HENAN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a special fertilizer for improving the physical and chemical properties of tobacco planting soil, so as to solve the problems of soil compaction, soil

Method used

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  • Fertilizer special for improving physical and chemical properties of tobacco planting soil
  • Fertilizer special for improving physical and chemical properties of tobacco planting soil
  • Fertilizer special for improving physical and chemical properties of tobacco planting soil

Examples

Experimental program
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preparation example Construction

[0025] The preparation method of biochar comprises the following steps:

[0026] 1) Place the peanut shells in the carbonization furnace, and control the temperature of the carbonization furnace to rise at a constant speed of 16°C / min;

[0027] 2) When the furnace temperature of the carbonization furnace reaches 450±30°C, stop heating and keep it warm for 30 minutes;

[0028] 3) Quickly cool down to room temperature to prepare biochar.

[0029] Rapid cooling refers to the cooling rate ≥ 10°C / min, usually 10°C / min, the reason for rapid cooling is that it can increase the porosity of biochar and increase the specific surface area. When , potassium dihydrogen phosphate and potassium sulfate are compounded, some other components will enter the pores of biochar, which will improve the slow-release effect and prolong the life of the fertilizer.

[0030] The basic physical and chemical indicators of biochar are pH 8.45-8.55, total carbon content 48.30%-48.64%, total nitrogen conten...

Embodiment 1

[0038] Example 1 (T1): biochar: 40%, water retaining agent: 0%, peanut shell (not carbonized): 10%, ammonium nitrate: 25%, potassium dihydrogen phosphate: 10%, potassium sulfate: 15%.

Embodiment 2

[0039] Example 2 (T2): biochar: 0%, water retaining agent: 10%, peanut shell (not carbonized): 40%, ammonium nitrate: 25%, potassium dihydrogen phosphate: 10%, potassium sulfate: 15%.

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Abstract

The invention relates to a fertilizer special for improving physical and chemical properties of tobacco planting soil. The fertilizer comprises the following components in percentage by weight: 40%-50% of biochar, 5%-15% of water-retaining agent, 20%-30% of ammonium nitrate, 5%-15% of potassium dihydrogen phosphate, and 10%-20% of potassium sulfate, wherein the biochar is obtained by burning peanut shells under low temperature and oxygen deficient conditions. According to the technical scheme, based on the biochar in combination with the water-retaining agent, the carbon-nitrogen ratio of thesoil can be increased by the biochar and the content of organic matters in the soil can be increased; the water-retaining agent is capable of increasing the water content of the soil; besides, ammonium nitrate is used for controlling the dosage of nitrogen, and potassium dihydrogen phosphate and potassium sulfate are used for supplementing K and P elements so as to improve the physical and chemical properties of the tobacco planting soil. The volume weight of the soil can be reduced, and the water content, the alkali-hydrolyzable nitrogen content, the fast-acting phosphorus content and the fast-acting potassium content in the soil can be increased; the contents of the fast-acting nutrients of the soil can be kept at relatively high levels, and the quality of tobacco leaves can be improved.

Description

technical field [0001] The invention belongs to the technical field of tobacco planting, in particular to a special fertilizer for improving the physical and chemical properties of tobacco planting soil. Background technique [0002] In tobacco leaf production, long-term application of chemical fertilizers and pesticides to increase tobacco leaf yield is common, but excessive application not only causes the yield and quality of flue-cured tobacco to decline, but also leads to soil compaction, soil carbon pool capacity decline, soil physical and chemical properties, soil enzymes, etc. The reduction of activity reduces the soil's ability to supply fertilizer and self-repair, and seriously damages the soil ecological environment. Therefore, increasing the soil carbon storage capacity, improving the soil environment for planting tobacco, and improving the utilization rate of tobacco fertilizers are urgent tasks in the tobacco production process. [0003] Biochar is a carbon-ric...

Claims

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Application Information

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IPC IPC(8): C05G3/04C05G3/80
CPCC05B7/00
Inventor 杨永锋贾国涛王宝林张俊岭杨欣玲王新中刘超马一琼叶校坤黄培元
Owner CHINA TOBACCO HENAN IND
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