Charcoal based plant cultivation substrate and preparation method thereof

A technology of cultivation substrate and biochar, which is applied in the direction of fertilizer mixture, fertilization device, application, etc., can solve the problems that no effective cultivation substrate has been found, and achieve the effect of excellent physical and chemical properties, complete nutrients and strong adjustment ability

Inactive Publication Date: 2013-12-11
QIONGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The development of peat substitutes or the direct use of other organic matter as the cultivation substrate has become its future development direction, but so far no effective cultivation substrate that meets the requirements of substrate cultivation and can be widely used in plant production has been found.

Method used

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  • Charcoal based plant cultivation substrate and preparation method thereof
  • Charcoal based plant cultivation substrate and preparation method thereof
  • Charcoal based plant cultivation substrate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The dried sawdust is crushed into particles with a diameter of less than 2mm, and then pyrolyzed under the condition of anoxic and 300°C for 3h to form wood pellet biochar; the wood pellet biochar is added to 1% potassium dihydrogen phosphate solution, and stirred for 2h until Filter after the pH value of the solution is stable; wash the filtered biochar particles twice with clear water, the pH value of the washing liquid is about 6.5, filter, and dry; calculate by volume 10 parts of sawdust biochar particles, 5 parts of river sand, 2 parts of coconut peat and 0.5 part of decomposed chicken manure are fully mixed.

Embodiment 2

[0020] The rice straw is dried and crushed into particles with a diameter of less than 1mm, and then pyrolyzed for 2.5 hours under the condition of anoxic and 400°C to form rice straw granular biochar; the rice straw granular biochar is added to 0.2% potassium dihydrogen phosphate solution, Stir for 3h, filter until the pH value of the solution is stable; wash the filtered biochar particles once with clear water, the pH value of the washing solution is about 6, filter, and dry; calculate by mass 0.1% compound fertilizer ( N:P 2 o 5 : K 2 O=15%: 15%: 15%) is added to rice straw biochar particles, and 10 parts of rice straw biochar particles, 10 parts of rock wool, 2 parts of bagasse, and 1 part of commercial organic fertilizer are fully mixed by volume. .

Embodiment 3

[0022] Peanut shells are dried and crushed into particles with a diameter of less than 3mm, and then pyrolyzed for 6 hours under anoxic conditions at 200°C to form peanut shell granular biochar; add peanut shell granular biochar to 5% potassium dihydrogen phosphate solution, and stir 1h, filter until the pH value of the solution is stable; wash the filtered biochar particles twice with clear water, the pH value of the washing solution is about 5.7, filter and dry; calculate by mass 0.2% chemical fertilizer (hydrogen phosphate A mixture of diammonium and potassium nitrate in a mass ratio of 2:1) was added to the peanut shell biochar particles, and 10 parts of peanut shell biochar particles, 7 parts of ceramsite, 3 parts of sawdust, and 0.8 parts of commercial organic fertilizer were fully mixed by volume. Instantly.

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Abstract

The invention relates to a charcoal based plant cultivation substrate and a preparation method thereof, and belongs to the technical field of soilless culture. The invention adopts the specific scheme that: after being dried, biomass material is pyrolyzed to form charcoal particles under an anoxic and heating condition, potassium dihydrogen phosphate is used for neutralizing the alkalinity of the charcoal particles and filtering and drying are performed, and after a certain amount of inorganic fertilizer is added, the charcoal particles are fully mixed with inorganic filling material, organic filling material and organic fertilizer, namely the charcoal based plant cultivation substrate is obtained. The invention has the advantages that the physical chemical property is excellent, the nutrients are complete, the fertilizer efficiency is lasting, the moisture adjusting capability is strong, the cost is low, the ecological benefits are high, the suitability is strong, the application range is wide, and the charcoal based plant cultivation substrate is suitable for cultivation of various plants.

Description

technical field [0001] The invention relates to the preparation of a biochar-based plant cultivation substrate, and belongs to the field of soilless cultivation or comprehensive utilization of agricultural waste. Background technique [0002] Substrate cultivation technology has become the most widely used soilless cultivation technology due to its advantages of safety and sanitation, high product quality, and controllable plant growth. When choosing a plant cultivation substrate, it is firstly required that the material is easy to obtain, low in price, has good chemical properties, comprehensive nutrition, strong water and fertilizer retention capacity, and can meet the needs of the growth and development of cultivated plants for a long time; secondly, the substrate is required to have good Physical properties, low density, better structure and permeability; again, the pH of the substrate should be moderate, and the optimum pH value of most plant cultivation substrates shou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
Inventor 史云峰赵牧秋
Owner QIONGZHOU UNIVERSITY
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