CN111727846A - Decomposed pine bark and preparation method thereof - Google Patents
Decomposed pine bark and preparation method thereof Download PDFInfo
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- CN111727846A CN111727846A CN202010642297.7A CN202010642297A CN111727846A CN 111727846 A CN111727846 A CN 111727846A CN 202010642297 A CN202010642297 A CN 202010642297A CN 111727846 A CN111727846 A CN 111727846A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
- A01G24/22—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material containing plant material
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/30—Growth substrates; Culture media; Apparatus or methods therefor based on or containing synthetic organic compounds
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C9/00—Fertilisers containing urea or urea compounds
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
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Abstract
The invention relates to a decomposed pine bark and a preparation method thereof, wherein the preparation method comprises the following steps: screening out multiple groups of pine bark particles with specified particle size ranges, mixing the multiple groups of pine bark particles with specified particle size ranges in proportion to obtain a grade ingredient, fully mixing the grade ingredient with water, a nitrogen source and polyether, stacking into a conical cone stack, turning over once every 7-10 days, cooling the stacking temperature to the ambient temperature after turning over for 6-9 times, completing thoroughly decomposition, wherein the mass fractions of the water, the nitrogen source and the polyether in the initial cone stack are 40-70%, 0.2-1% and the balance is the grade ingredient. The method has the beneficial effects that a plurality of groups of pine bark particles with different particle size ranges are mixed to obtain a graded ingredient, so that the compost decomposition efficiency is higher after the graded ingredient is mixed with water, a nitrogen source and polyether and stacked, and the compost is also suitable for water retention and air permeability after decomposition and can be directly used; besides the nitrogen source, polyether is added during the decomposition, so that a faster and better decomposition effect can be ensured.
Description
Technical Field
The invention relates to the technical field of nutrient soil ingredient production, in particular to decomposed pine bark and a preparation method thereof.
Background
As people pay more and more attention to the renewable utilization of resources, the bark is more and more concerned as a main component of a cultivation substrate (nutrient soil). Pine bark as a culture medium needs to be well decomposed to achieve the purpose of application, and people begin to pay attention to the decomposition and application of the pine bark as early as the fifth and sixth decades of the 20 th century. After the pine bark is thoroughly decomposed, the seedling quality and the germination rate can be improved, the growth of plants can be improved, the root rot can be prevented, and the growth of root nematodes parasitizing at roots can be inhibited.
Pine bark in China is mainly waste generated in the wood processing industry, is light in weight, rich in organic matters, good in water retention and air permeability, high in cation exchange capacity and good in natural cultivation matrix. However, the carbon-nitrogen ratio of the pine bark waste in the wood processing industry is too high, and the oil, the tannin and the phenolic substances are too much, so that the pine bark waste cannot be directly used as a culture substrate and must be subjected to decomposition treatment. Generally, a user purchases fresh pine barks and naturally stacks the fresh pine barks for 2 to 3 years before using the pine barks, the key control point of the method is basically controlled by experience, no reference standard exists, the decomposition efficiency is low, the quality of the pine barks cannot be guaranteed, and the direct use of the pine barks can cause damage to plants; in addition, the literature reports that the decomposition efficiency is improved by adding exogenous additives such as EM (effective microorganisms) or wood vinegar, and the method increases the cost, needs a higher control process and is not beneficial to large-scale popularization and utilization; in addition, a rotting process using urea as an external additive is reported, which mainly comprises the steps of directly mixing crushed pine bark (the particle size is usually between 0.2 and 10 mm) with a nitrogen source and water, namely, the crushed pine bark is directly rotted without screening and grading according to the particle size, the proportion of particles with relatively large particle size is too high, and the obvious defects are that on one hand, the rotting efficiency is not high, on the other hand, the proportion of particles with relatively large particle size in the rotted pine bark particles is still too large, so that the water retention capacity does not reach the standard, the pine bark particles cannot be directly used for pot planting or used for mixing other planting matrix materials, the pine bark particles can be used only after being subjected to screening and grading treatment, and the screening treatment after rotting is more difficult than before being rotted.
Disclosure of Invention
The invention aims to solve the technical problem of providing the decomposed pine bark and the preparation method thereof, aiming at overcoming the defects that the efficiency is low when the decomposed pine bark is prepared and the decomposed pine bark can be effectively used as a nutrient soil matrix only by sieving treatment after being decomposed in the prior art.
The technical scheme for solving the technical problems is as follows: a preparation method of decomposed pine bark comprises the following steps: screening out multiple groups of pine bark particles with specified particle size ranges, mixing the multiple groups of pine bark particles with specified particle size ranges in proportion to obtain a grade ingredient, fully mixing the grade ingredient with water, a nitrogen source and polyether, stacking into a conical cone stack, turning over once every 7-10 days, cooling the stacking temperature to the ambient temperature after turning over for 6-9 times, completing thoroughly decomposition, wherein the mass fractions of the water, the nitrogen source and the polyether in the initial cone stack are 40-70%, 0.2-1% and the balance is the grade ingredient.
On the basis of the technical scheme, the invention can further specifically select the following.
Specifically, the pine bark particles in the specified particle size range have 3 groups, and the corresponding particle size ranges are d which is more than or equal to 0.5mm and less than 3mm, d which is more than or equal to 3mm and less than or equal to 6mm and d which is more than or equal to 6mm and less than or equal to 9mm in sequence, wherein the pine bark particles in the particle size range of d which is more than or equal to 0.5mm and less than or equal to 3mm account for more than 25 percent of the total mass of the grade ingredient, and the pine bark particles in the particle size range of d which is more than or equal to 6 mm.
Preferably, the mass fraction of the pine bark particles with the particle size range of d being more than or equal to 0.5mm and less than or equal to 3mm in the total mass of the grade ingredient is 25-60%, the mass fraction of the pine bark particles with the particle size range of d being more than or equal to 3mm and less than or equal to 6mm in the total mass of the grade ingredient is 20-50%, and the mass fraction of the pine bark particles with the particle size range of d being more than 6mm and less than or equal to 9mm in the total mass of the grade ingredient is 10-25%.
Specifically, the nitrogen source is urea, urea formaldehyde or a mixture of the urea and the urea formaldehyde in any proportion.
Specifically, the polyether is polyether L64 or polyether F38.
Preferably, the mass fractions of the water, the nitrogen source, the polyether and the grade ingredients in the initial stack are 50-60%, 0.5-0.8%, 0.2-0.5% and 39-49% in sequence.
Specifically, the height of the conical cone stack is 1.2-1.6m, and the diameter of the bottom surface is 2-3 m.
Specifically, the stack is covered by a black porous plastic film in the decomposing process, and the specification of the black porous plastic film is 70-100g/m2And air holes with the aperture of less than 1mm are densely distributed on the air holes.
The invention also provides the decomposed pine bark which is prepared by the method.
Compared with the prior art, the invention has the beneficial effects that:
screening multiple groups of crushed pine bark particles according to different particle size ranges, mixing the multiple groups of pine bark particles with different particle size ranges in proportion to obtain a grade ingredient, wherein the grade ingredient has proper water retention and air permeability, can ensure that the aerobic dynamic composting decomposition efficiency is higher after the grade ingredient is mixed and stacked with water, a nitrogen source and polyether, and simultaneously the decomposed particles obtained after decomposition also have proper water retention and air permeability and can be directly used as a culture medium for potted plant planting or mixed with other matrix materials; the polyether is added, so that the water and the nitrogen source can uniformly and rapidly permeate into the pine bark particles, the decomposition speed of the pine bark particles can be remarkably increased, and the production efficiency is obviously improved; the nitrogen source and the polyether are low in dosage and low in cost, the decomposed pine bark is stable in structure and not easy to disintegrate, and the cation exchange capacity and the fertilizer retention capacity of the pine bark are obviously improved; the preparation method is simple in overall operation, high in decomposition efficiency and few in control points, can be used in large-scale treatment practice for pine bark waste utilization, and the obtained decomposed pine bark can be used as a cultivation medium, so that resource recovery is facilitated and ecological cycle is promoted.
Detailed Description
The principles and features of this invention are described below in conjunction with specific embodiments, which are set forth merely to illustrate the invention and are not intended to limit the scope of the invention.
The starting materials used in the following examples are, unless otherwise specified, commercially available products, and the methods used are, unless otherwise specified, conventional methods well known to those skilled in the art.
For avoiding repeated description, the compost is composted into conical cone stacks in the following examples and comparative examples, the height of each conical cone stack is 1.5m, and the diameter of the bottom surface of each conical cone stack is 2.5 m; covering the stack with black plastic film in the decomposing process, wherein the specification of the black plastic film is 70-100g/m2。
Example 1
A preparation method of decomposed pine bark comprises the following steps:
screening 3 groups of pine bark particles with different particle size ranges and mixing the pine bark particles according to a proportion to obtain a grade ingredient, wherein the particle size ranges corresponding to the 3 groups of pine bark particles are that d is more than or equal to 0.5mm and less than 3mm, d is more than or equal to 3mm and less than or equal to 6mm and d is more than or equal to 6mm and less than or equal to 9mm in sequence, the mass fraction of the pine bark particles with the particle size range of more than or equal to 0.5mm and less than or equal to 3mm in the total mass of the grade ingredient is 40%, the mass fraction of the pine bark particles with the particle size range of more than 3mm and less than or equal to 6mm in the total mass of the grade ingredient is 50%, and the mass fraction of the;
and then fully mixing the grade ingredients with water, urea and polyether L64, stacking into a conical cone stack, turning the conical cone stack once every 7 days, turning the conical cone stack for 9 times, cooling the stacking temperature to the ambient temperature, and completing decomposition, wherein the mass fractions of the water, the urea and the polyether L64 in the initial cone stack are 50%, 1% and 1% in sequence, and the balance is the grade ingredients.
Example 2
A preparation method of decomposed pine bark comprises the following steps:
screening 3 groups of pine bark particles with different particle size ranges and mixing the pine bark particles according to a proportion to obtain a grade ingredient, wherein the particle size ranges corresponding to the 3 groups of pine bark particles are that d is more than or equal to 0.5mm and less than 3mm, d is more than or equal to 3mm and less than or equal to 6mm and more than 6mm and less than or equal to 9mm in sequence, the mass fraction of the pine bark particles with the particle size range of more than or equal to 0.5mm and less than or equal to 3mm in the total mass of the grade ingredient is 25%, the mass fraction of the pine bark particles with the particle size range of more than 3mm and less than or equal to 6mm in the total mass of the grade ingredient is 50%, and the mass fraction of the pine bark particles with the;
and then fully mixing the secondary ingredients with water, urea and polyether L64, stacking into a conical cone stack, turning the cone stack once every 8 days, turning the cone stack for 8 times, and completing decomposition when the stacking temperature is reduced to the ambient temperature, wherein the mass fractions of the water, the urea and the polyether L64 in the initial cone stack are 55%, 0.8% and 0.5% in sequence, and the balance is the secondary ingredients.
Example 3
A preparation method of decomposed pine bark comprises the following steps:
screening 3 groups of pine bark particles with different particle size ranges and mixing the pine bark particles according to a proportion to obtain a grade ingredient, wherein the particle size ranges corresponding to the 3 groups of pine bark particles are that d is more than or equal to 0.5mm and less than 3mm, d is more than or equal to 3mm and less than or equal to 6mm and d is more than or equal to 6mm and less than or equal to 9mm in sequence, the mass fraction of the pine bark particles with the particle size range of more than or equal to 0.5mm and less than or equal to 3mm in the total mass of the grade ingredient is 60%, the mass fraction of the pine bark particles with the particle size range of more than 3mm and less than or equal to 6mm in the total mass of the grade ingredient is 30%, and the mass fraction of the;
and then fully mixing the secondary ingredients with water, urea and polyether L64, stacking into a conical cone stack, turning the cone stack once every 9 days, turning the cone stack for 7 times, and completing the decomposition when the stacking temperature is reduced to the ambient temperature, wherein the mass fractions of the water, the urea and the polyether L64 in the initial cone stack are 60%, 0.5% and 0.2% in sequence, and the balance is the secondary ingredients.
Example 4
A preparation method of decomposed pine bark comprises the following steps:
screening 3 groups of pine bark particles with different particle size ranges and mixing the pine bark particles according to a proportion to obtain a grade ingredient, wherein the particle size ranges corresponding to the 3 groups of pine bark particles are that d is more than or equal to 0.5mm and less than 3mm, d is more than or equal to 3mm and less than or equal to 6mm and d is more than or equal to 6mm and less than or equal to 9mm in sequence, the mass fraction of the pine bark particles with the particle size range of more than or equal to 0.5mm and less than or equal to 3mm in the total mass of the grade ingredient is 45%, the mass fraction of the pine bark particles with the particle size range of more than 3mm and less than or equal to 6mm in the total mass of the grade ingredient is 40%, and the mass fraction of the;
and then fully mixing the secondary ingredients with water, urea formaldehyde and polyether F38, stacking into a conical cone stack, turning the conical cone stack once every 10 days, turning the conical cone stack for 7 times, and completing decomposition when the stacking temperature is reduced to the ambient temperature, wherein the mass fractions of the water, the urea formaldehyde and the polyether F38 in the initial cone stack are 65%, 0.4% and 0.3% in sequence, and the balance is the secondary ingredients.
Example 5
A preparation method of decomposed pine bark comprises the following steps:
screening 3 groups of pine bark particles with different particle size ranges and mixing the pine bark particles according to a proportion to obtain a grade ingredient, wherein the particle size ranges corresponding to the 3 groups of pine bark particles are that d is more than or equal to 0.5mm and less than 3mm, d is more than or equal to 3mm and less than or equal to 6mm and d is more than or equal to 6mm and less than or equal to 9mm in sequence, the mass fraction of the pine bark particles with the particle size range of more than or equal to 0.5mm and less than or equal to 3mm in the total mass of the grade ingredient is 45%, the mass fraction of the pine bark particles with the particle size range of more than 3mm and less than or equal to 6mm in the total mass of the grade ingredient is 40%, and the mass fraction of the;
and then fully mixing the secondary ingredients with water, urea formaldehyde, urea and polyether F38, stacking into a conical cone stack, turning the cone stack once every 10 days, turning the cone stack for 7 times, and completing decomposition when the stacking temperature is reduced to the environmental temperature, wherein the mass fractions of the water, the urea formaldehyde, the urea and the polyether F38 in the initial cone stack are 65%, 0.2%, 0.3% and 0.3% in sequence, and the balance is the secondary ingredients.
Comparative example 1
A preparation method of decomposed pine bark comprises the following steps:
crushing the pine bark particles, sieving for two times, and screening out particles with the particle size of more than 9mm and the particle size of less than 0.5mm to obtain the pine bark particles with the particle size range of d of more than or equal to 0.5mm and less than or equal to 9 mm;
and then, fully mixing the selected pine bark particles with water, urea and polyether L64, stacking the mixture into a conical cone stack, turning the cone stack once every 7 days, turning the cone stack for 9 times, and completing decomposition when the stacking temperature is reduced to the environmental temperature, wherein the mass fractions of the water, the urea and the polyether L64 in the initial cone stack are 50%, 1% and 1% in sequence, and the balance is the pine bark particles.
Comparative example 2
A preparation method of decomposed pine bark comprises the following steps:
crushing the pine bark particles, sieving for two times, and screening out particles with the particle size of more than 9mm and the particle size of less than 0.5mm to obtain the pine bark particles with the particle size range of d of more than or equal to 0.5mm and less than or equal to 9 mm;
and then, fully mixing the selected pine bark particles with water, urea and polyether L64, stacking the mixture into a conical cone stack, turning the conical cone stack once every 8 days, turning the conical cone stack for 8 times, and completing the decomposition after the stacking temperature is reduced to the environmental temperature, wherein the mass fractions of the water urea and the polyether L64 in the initial cone stack are 55%, 0.8% and 0.5% in sequence, and the balance is the pine bark particles.
Comparative example 3
A preparation method of decomposed pine bark comprises the following steps:
crushing the pine bark particles, sieving for two times, and screening out particles with the particle size of more than 9mm and the particle size of less than 0.5mm to obtain the pine bark particles with the particle size range of d of more than or equal to 0.5mm and less than or equal to 9 mm;
and then, fully mixing the selected pine bark particles with water, urea and polyether L64, stacking the mixture into a conical cone stack, turning the cone stack once every 9 days, turning the cone stack for 7 times, and completing the decomposition after the stacking temperature is reduced to the environmental temperature, wherein the mass fractions of the water, the urea and the polyether L64 in the initial cone stack are 60%, 0.5% and 0.2% in sequence, and the balance is the pine bark particles.
Comparative example 4
A preparation method of decomposed pine bark comprises the following steps:
screening 3 groups of pine bark particles with different particle size ranges and mixing the pine bark particles according to a proportion to obtain a grade ingredient, wherein the particle size ranges corresponding to the 3 groups of pine bark particles are that d is more than or equal to 0.5mm and less than 3mm, d is more than or equal to 3mm and less than or equal to 6mm and d is more than or equal to 6mm and less than or equal to 9mm in sequence, the mass fraction of the pine bark particles with the particle size range of more than or equal to 0.5mm and less than or equal to 3mm in the total mass of the grade ingredient is 40%, the mass fraction of the pine bark particles with the particle size range of more than 3mm and less than or equal to 6mm in the total mass of the grade ingredient is 50%, and the mass fraction of the;
and then fully mixing the primary ingredients with water and urea, stacking into a conical cone stack, turning the cone stack once every 7 days, turning the cone stack for 9 times, cooling the stack to the ambient temperature, and completing decomposition, wherein the mass fractions of water and urea in the initial cone stack are 50% and 1% in sequence, and the balance is the primary ingredients.
Comparative example 5
A preparation method of decomposed pine bark comprises the following steps:
screening 3 groups of pine bark particles with different particle size ranges and mixing the pine bark particles according to a proportion to obtain a grade ingredient, wherein the particle size ranges corresponding to the 3 groups of pine bark particles are that d is more than or equal to 0.5mm and less than 3mm, d is more than or equal to 3mm and less than or equal to 6mm and more than 6mm and less than or equal to 9mm in sequence, the mass fraction of the pine bark particles with the particle size range of more than or equal to 0.5mm and less than or equal to 3mm in the total mass of the grade ingredient is 25%, the mass fraction of the pine bark particles with the particle size range of more than 3mm and less than or equal to 6mm in the total mass of the grade ingredient is 50%, and the mass fraction of the pine bark particles with the;
and then fully mixing the primary ingredients with water and urea, stacking the mixture into a conical cone stack, turning the conical cone stack once every 8 days, and after turning the conical cone stack for 8 times, cooling the stacking temperature to the ambient temperature to finish decomposition, wherein the mass fractions of the water and the urea in the initial cone stack are 55% and 0.8% in sequence, and the balance is the primary ingredients.
In the above examples and comparative examples, after the last turning, 10 to 15 days usually, spreading and stacking are carried out to reduce the temperature to ambient temperature, and the rotten pine bark is completely rotted and ready for use, wherein the rotten pine bark of each example usually has a water content of 50 to 55%, an EC value of less than 1ms/cm, and a pH value of 5.0 to 6.5.
After the decomposed pine bark particles obtained in each example and each proportion are respectively mixed with coconut chaff and perlite according to the volume fractions of 50 percent, 40 percent and 10 percent to form nutrient soil, potted plant zanthoxylum bungeanum L.is planted in three pots by using the corresponding nutrient soil under the same condition, observation and comparison show that the zanthoxylum bungeanum L.in each nutrient soil has the best growth vigor of the zanthoxylum bungeanum L.in examples 1 to 5, the zanthoxylum bungeanum L.in comparative examples 4 and 5, the zanthoxylum bungeanum L.in comparative examples 1 to 3 have the middle growth vigor after a period of growth, specifically, the average crown amplitude of the zanthoxylum bungeanum L.in examples 1 to 5 at week 8 is increased by 12.06 percent, the average leaf size is increased by 6.18 percent, the average plant height is increased by 2.0 percent, the average crown amplitude of the zanthoxylum bungeanum L.in comparative examples 4 to 5 at week 8 is increased by 9.21 percent, the average leaf size is increased by 5.04%, the average plant height is increased by 4.0%, and obvious growth difference can be seen. Under the same conditions, the main reasons for the obvious growth difference may be that the decomposed pine bark obtained in examples 1 to 4 is subjected to particle size screening and proper grading before being decomposed, the decomposition is fast and effective after the nitrogen source and the polyether are added, and the decomposed pine bark particles have good water retention and air permeability, so that the pine bark particles can be directly mixed with coconut coir and perlite to be used as cultivation nutrient soil, and the corresponding plant growth is optimal; comparative examples 4 and 5, compared with the examples, although the pine bark particles are also graded by screening at the beginning, polyether is not added during the decomposition, so that the decomposition effect is worse than that of the examples, the decomposition is insufficient, and the corresponding decomposed particles are easier to disintegrate and difficult to maintain than those obtained by the examples, so that the growth vigor of the corresponding potted plants is slightly worse than that of the examples; in comparative examples 1 to 3, the pine bark particles were simply screened at the beginning without grading, wherein the mass of the large particles of 6 to 9mm was usually 40% or more of the total mass of the pine bark particles, and the large particles were large, so that on one hand, the decomposition became slow and the effect was poor, and on the other hand, the nutrient soil formed by the decomposed pine bark particles and other matrixes was deficient in water retention capacity, and finally, the growth vigor of the corresponding potted plants was relatively the worst.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The preparation method of the decomposed pine bark is characterized by comprising the following steps: screening out multiple groups of pine bark particles with specified particle size ranges, mixing the multiple groups of pine bark particles with specified particle size ranges in proportion to obtain a grade ingredient, fully mixing the grade ingredient with water, a nitrogen source and polyether, stacking into a conical cone stack, turning over once every 7-10 days, cooling the stacking temperature to the ambient temperature after turning over for 6-9 times, completing thoroughly decomposition, wherein the mass fractions of the water, the nitrogen source and the polyether in the initial cone stack are 40-70%, 0.2-1% and the balance is the grade ingredient.
2. The method of claim 1, wherein the pine bark particles in the specified size range have 3 groups and correspond to the size ranges of 0.5mm < d < 3mm, 3mm < d < 6mm and 6mm < d < 9mm, wherein the pine bark particles in the size range of 0.5mm < d < 3mm account for more than 25% of the total mass of the primary batch, and the pine bark particles in the size range of 6mm < d < 9mm account for less than 25% of the total mass of the primary batch.
3. The method according to claim 2, wherein the mass fraction of the pine bark particles having a particle size of 0.5mm < d < 3mm in the total mass of the furnish is 25 to 60%, the mass fraction of the pine bark particles having a particle size of 3mm < d < 6mm in the total mass of the furnish is 20 to 50%, and the mass fraction of the pine bark particles having a particle size of 6mm < d < 9mm in the total mass of the furnish is 10 to 25%.
4. The method of claim 1, wherein the nitrogen source is urea, urea formaldehyde or a mixture thereof at any ratio.
5. The method of claim 1, wherein the polyether is polyether L64 or polyether F38.
6. The method of claim 1, wherein the water, nitrogen source, polyether and other ingredients in the initial stack are present in an amount of 50-60%, 0.5-0.8%, 0.2-0.5%, 39-49% by weight.
7. The method of claim 1, wherein the cone has a height of 1.2-1.6m and a base diameter of 2-3 m.
8. The method according to any one of claims 1 to 7, wherein the stack is covered with a black porous plastic film during the decomposition process, the black porous plastic film having a gauge of 70-100g/m2And air holes with the aperture of less than 1mm are densely distributed on the air holes.
9. A decomposed pine bark, prepared by the method of any one of claims 1 to 8.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115885811A (en) * | 2022-11-30 | 2023-04-04 | 广州市林业和园林科学研究院 | Tianqiao bougainvillea spectabilis planting matrix and preparation method thereof |
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