CN111575031A - Method for preparing biochar and improving white serous soil by utilizing mulberry or perennial jasmine branches - Google Patents

Method for preparing biochar and improving white serous soil by utilizing mulberry or perennial jasmine branches Download PDF

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CN111575031A
CN111575031A CN202010486203.1A CN202010486203A CN111575031A CN 111575031 A CN111575031 A CN 111575031A CN 202010486203 A CN202010486203 A CN 202010486203A CN 111575031 A CN111575031 A CN 111575031A
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soil
white
improving
branches
biochar
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苏天明
何铁光
秦芳
李嘉维
苏利荣
李琴
曾成城
李忠义
朱桂宁
张野
王瑾
王吉平
谢育利
曾向阳
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Guangxi Zhuang Nationality Autonomous Region Academy of Agricultural Sciences
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Guangxi Zhuang Nationality Autonomous Region Academy of Agricultural Sciences
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
    • C10B53/02—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K17/00—Soil-conditioning materials or soil-stabilising materials
    • C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K17/00—Soil-conditioning materials or soil-stabilising materials
    • C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
    • C09K17/06—Calcium compounds, e.g. lime
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2109/00—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE pH regulation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/10—Biofuels, e.g. bio-diesel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency
    • Y02P20/133—Renewable energy sources, e.g. sunlight

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Soil Working Implements (AREA)

Abstract

The invention discloses a method for preparing biochar by utilizing mulberry or perennial jasmine flower branches. The dolomite powder is added into the biological carbon to form the composite soil improving agent which can be used for improving the dolomite. Accordingly, the inventor also establishes a method for improving the white muddy soil, and the method integrates the technical measures of deep ploughing and deep scarification, returning biological carbon to the field, preparing and applying an acidic soil improving agent, draining stagnant water and the like. Practical application shows that the method is simple to operate, the mulberry branches or the perennial jasmine branches are rich in source, the branches are moderate in size, high in lignin content and good in adhesion with the white serous soil, and the soil improvement effect and the crop yield increase effect on the white serous soil are obvious.

Description

Method for preparing biochar and improving white serous soil by utilizing mulberry or perennial jasmine branches
Technical Field
The invention belongs to the technical field of biochar preparation and soil improvement, and particularly relates to a method for preparing biochar and improving white serous soil by utilizing mulberry or perennial jasmine branches.
Background
The mulberry or jasmine in China has a large planting area, and needs to be trimmed every year, so that a large number of branches are generated and accumulated in the field, and pollution and resource waste are caused.
Through retrieval, many reports on the preparation of the biochar and the application of the biochar in soil exist at present, but reports that mulberry or jasmine branches are used as biochar raw materials are not found.
In the Chinese patent application "soil improvement material and its preparation method" (patent application No. 201410158389.2 published as No. 2015.10.28), a soil improvement material is disclosed, which is prepared by mixing 50-75% of rice straw biochar by weight, 10-20% of bentonite by weight and 15-30% of coal humic acid by weight, and the preparation method comprises the steps of preparation, mixing and crushing treatment of the rice straw biochar and fermentation. The invention can obviously reduce the emission of greenhouse gases in the atmosphere, and has the characteristics of effectively enhancing the adsorption performance of polycyclic aromatic hydrocarbons in soil, weakening the diffusion and leakage of pollutants such as pesticides, reducing the crop absorption of the pesticides and the accumulation of the pesticides in the earthworm body, and the like.
In Chinese patent application 'a biological carbon floating seedling substrate and a preparation method thereof' (patent application No. 201210308557.2 published as No. 2013.01.02), a biological carbon floating seedling substrate is disclosed, which consists of 45-65% of biological carbon, 15-25% of perlite and 20-30% of vermiculite in percentage by volume. The invention can improve the strong seedling rate, reduce the incidence rate of plant diseases and insect pests in the seedling stage of crops, improve the transplanting survival rate of crops, improve the quality of crops and simultaneously increase the income, and is favorable for saving the use of turf resources, achieves the aims of resource utilization of flue-cured tobacco straws and reduction of environmental pollution, reduces the environmental pressure and increases the benefit, and the configuration proportion has better economic benefit, social benefit and ecological benefit.
In the chinese patent application "a method for preparing biological carbon bacterial manure and its application" (patent application No. 201510653422.3 published as 2016.04.06), the method for preparing biological carbon bacterial manure comprises the following steps: carbonizing the raw materials under anaerobic condition, and respectively storing the produced biochar and pyroligneous liquor for later use; 2. preparing a carbonic hydrolase and a biological flora; 3. and (4) preparing the biological carbon bacterial fertilizer. The content of water-soluble available carbon is 5-10 times of that of common organic fertilizer, the slow release and quick effect are combined, and the fertilizer efficiency is 3-5 times of that of the common organic fertilizer.
Studies of Mengqingying and the like (2012, Heilongjiang agricultural science) show that the utilization of a four-section plough for deep scarification and improvement of white serofluid can increase the number of soil microorganisms, the plant height of soybeans, the number of pods per plant, the number of grains per plant and the yield of the soybeans.
The white muddy soil has poor plasticity, small soil grain size, poor water and air permeability, poor fertilizer permeability, poor water and fertilizer retention performance, easy hardening due to drought, easy adhesion after heavy rain, poor drought and waterlogging resistance, difficult growth and easy fracture of crop root systems, difficult absorption of crops on water and fertilizer, low crop yield and poor quality of agricultural products. The technical measures for improving the white muddy soil mainly comprise deep ploughing and deep scarification, planting green manure, returning straw to the field, draining waterlogging and preventing drought, and applying organic fertilizer.
The invention relates to a straw subsoil mixing plough in the Ju Bao nationality (2017, the Proc. of agricultural engineering) and the like, which adopts a method of turning 20cm upwards and 30cm-40cm downwards and applying organic materials into a subsoil layer, compared with shallow-turning deep-loosening, the water content of soil with the length of 20cm-40cm is improved by 2.69-4.90 percentage points, the hardness is reduced by 44.45 percent, the soil permeability is improved, the solid phase is reduced by 4.51-2.14 percentage points, the liquid phase is increased by 1.17-4.13 percentage points, the gas phase is increased by 0.38-0.98 percentage points, the volume weight is reduced by 0.16g/cm3-0.11g/cm3The yield of the soybean is increased by 15.77 to 16.33 percent in 2 years continuously.
Li Shirong et al (2017, Ginseng research) applied cellulose-rich straw compost such as decomposed corn, soybean, rice, sorghum to the surface layer of white serous soil at an application rate of 3-5 tons/mu, and the results show that after soil improvement, the organic matter content and pH value of the soil are significantly increased, and the volume weight of the soil is reduced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for preparing biochar and improving white serofluid soil by utilizing mulberry or perennial jasmine branches, which has wide raw material source, simple operation and obvious soil improvement effect aiming at the white serofluid soil.
In order to solve the technical problems, the invention adopts the following technical scheme:
a method for preparing biochar from mulberry or perennial jasmine flower branches comprises the steps of taking the mulberry or perennial jasmine flower branches as raw materials, drying the raw materials in the sun, cutting off the raw materials, and carbonizing the raw materials.
Drying in the sun until the water content is 30-40%, cutting the branches to 2-4 cm long, and carbonizing at 80-150 deg.C.
The carbonization is carried out according to the following operations: the raw materials are stacked in a square groove, the stacking height is 1.5m-2.0m, clear water is continuously sprayed in the carbonization process to enable the water content of the materials to be 45% -55%, the materials are uniformly stirred at regular time, the bottom of the materials in the whole carbonization process is subjected to air draft by an air draft fan, and the power of the air draft fan is more than or equal to 3 KW.
The biochar obtained by the method is applied to the improvement of the white serofluid.
The method for improving the white serous soil comprises the steps of adding dolomite powder into the obtained biochar to form a composite soil improving agent, and mixing the composite soil improving agent with the white serous soil.
According to the method for improving the white muddy soil, the dolomite powder is added into the obtained biochar according to the weight percentage of 5% -10%, and the composite soil improving agent is obtained after uniform stirring.
The method for improving the white serofluid soil comprises the step of mixing the composite soil improving agent and the white serofluid soil on continuous sunny days, wherein the field water capacity of the soil is 30-50%.
The composite soil improving agent and the white clay are mixed according to the following operations: harrowing the soil on the surface (0-20 cm), applying the composite soil modifier on the surface for the first time, harrowing the surface evenly, ploughing (20-40 cm), harrowing the surface, applying the composite soil modifier on the surface for the second time, and harrowing the surface evenly.
The total amount of the compound soil improving agent is determined according to the proportion of the white serous soil to the soil, and is generally 1 to 5 tons per mu.
And (3) mixing the composite soil improving agent with the white clay, ridging, and forming deep ditches (30-40 cm) to promote drainage.
Aiming at the problem of branch accumulation waste caused by the development of the mulberry industry or the jasmine industry in China at present, the inventor establishes a method for preparing biochar by utilizing mulberry or perennial jasmine branches, takes the mulberry or perennial jasmine branches as raw materials, and obtains the biochar by drying, cutting and carbonizing the raw materials. Other crop straws, such as cassava straws are too thick, the lignin content of rice, corn, sugarcane and wheat straws is too low, the yield of traditional Chinese medicinal material branches is low, the lignin content of mulberry branches or perennial jasmine branches is high, the thickness is moderate, the carbonized materials are soft, and the straws are easy to be adhered to white serous soil particles. Of course, other branches with high lignin content, small diameter and large production quantity, such as cotton and fruit branches, can be replaced. In addition, unlike the preparation of biochar from other raw materials, the preparation process of biochar does not need to add any auxiliary materials or chemicals.
The dolomite powder is added into the biological carbon to form the composite soil improving agent which can be used for improving the dolomite. The dolomite powder mainly comprises calcium carbonate and magnesium carbonate, is weakly alkaline, mild in temperament and good in buffering property, has better acid regulating effect on soil than quicklime, slaked lime, limestone powder, gypsum and the like, is suitable for improving acid soil, and after being added into the soil, the pH value of the soil slowly rises and then slowly falls. Practical application shows that the invention can obviously improve the physicochemical properties of the white serofluid, reduce the volume weight of the soil, improve the pH value and the organic content of the soil and the performances of water permeability, air permeability, water retention and fertilizer retention, obviously promote the growth of crop roots, improve the utilization rate of fertilizer and improve the crop yield.
Accordingly, the inventor also establishes a method for improving the white muddy soil, and the method integrates the technical measures of deep ploughing and deep scarification, returning biological carbon to the field, preparing and applying an acidic soil improving agent, draining stagnant water and the like. Wherein, the deep ploughing and deep scarification measures change the white serous soil into small particles which are easy to be mixed with biological carbon and dolomite powder to form water-stable aggregates; the application of the biochar improves the plasticity, permeability, water and fertilizer retention capacity and drought resistance of the white clay; the dolomite powder is applied to improve the pH value of the soil, promote the soil to form a water-stable calcium-regulated structure, improve the bioavailability of nutrients and improve the water and fertilizer retention performance of the soil; the flood drainage measures can relieve the flooding condition of the white muddy soil in rainy seasons.
Detailed Description
Example 1
In 3 months in 2019, trimming mulberry branches grown in 2 years, removing mulberry leaves, drying until the water content is 30%, cutting to 2.0cm, stacking in a square cement tank, forming brick structures around, left and right of and below the cement tank, hardening with cement, completely opening the upper surface, keeping the height in the tank to be 2m, stacking the materials to be 1.6m, igniting and burning, carbonizing at 80-90 ℃, continuously spraying clear water in the carbonization process to ensure that the water content of the materials is 48-52%, stirring uniformly at regular time, using an air draft fan at the bottom of the materials in the whole carbonization process, and setting the power of the air draft fan to be 3 KW.
Adding 5% dolomite powder into the obtained biochar according to the weight ratio, and uniformly stirring to obtain the composite soil improving agent.
Carrying out soil improvement tests on white muddy soil of a certain farm in Mitsui county in Guangxi on continuous sunny days with the soil field water holding capacity of 40%, harrowing soil on a surface layer (0cm-20cm), applying 2 tons/mu of the composite soil improving agent on the surface layer for the first time, harrowing the surface layer uniformly, ploughing (30cm deep), harrowing the surface layer, applying 2 tons/mu of the composite soil improving agent on the surface layer for the second time, and harrowing the surface layer uniformly; ridging and deep furrows (30cm) are formed to promote drainage.
The flowering cabbage is planted on the white serofluid after soil improvement, and the result shows that the soil in the soil improvement area becomes looser and the volume weight is from 1.30g/cm compared with the control area without soil improvement3Reduced to 1.15g/cm3The soil moisture content is improved by 10.25%, the total porosity is improved by 8.41%, the organic matter content is improved by 1.52%, the root system of the flowering cabbage is increased by 3.02cm, the new root is increased by 20.54%, the nutrient utilization rate is improved by 10.62%, and the yield of the flowering cabbage is improved by 10.17%.
Example 2
In 3 months in 2019, trimming mulberry branches grown in 2 years, removing mulberry leaves, drying until the water content is 30%, cutting to 2.0cm, stacking in a square cement tank, forming brick structures around, left and right of and below the cement tank, hardening with cement, completely opening the upper surface, keeping the height in the tank to be 2m, stacking the materials to be 1.6m, igniting and burning, carbonizing at 80-90 ℃, continuously spraying clear water in the carbonization process to ensure that the water content of the materials is 48-52%, stirring uniformly at regular time, using an air draft fan at the bottom of the materials in the whole carbonization process, and setting the power of the air draft fan to be 3 KW.
Adding 5% dolomite powder into the obtained biochar according to the weight ratio, and uniformly stirring to obtain the composite soil improving agent.
Carrying out soil improvement tests on white muddy soil of a certain farm in Mitsui county in Guangxi on a continuous sunny day with the soil field capacity of 40%, wherein the first surface layer is applied with 2 tons/mu of the composite soil improving agent, the ploughing (depth of 30cm) is carried out, and the second surface layer is applied with 2 tons/mu of the composite soil improving agent; ridging and deep furrows (30cm) are formed to promote drainage.
The flowering cabbage is planted on the white serofluid after soil improvement, and the result shows that the soil in the soil improvement area becomes looser and the volume weight is from 1.30g/cm compared with the control area without soil improvement3Reduced to 1.25g/cm3The soil moisture content is improved by 3.56%, the total porosity is improved by 2.51%, the organic matter content is improved by 1.52%, the root system of the flowering cabbage is increased by 1.08cm, the new root is increased by 5.16%, the nutrient utilization rate is improved by 3.54%, and the yield of the flowering cabbage is improved by 3.67%. However, the soil improving agent has poor adhesion with soil, the white serous soil is still hardened into blocks, and the yield increasing rate of the cabbage heart is low. The method is very important for fully raking the white serous fluid and the composite soil improving agent uniformly, and can improve the adhesion between the composite soil improving agent and the white serous fluid and form small-particle water-stable aggregates, thereby greatly improving the soil improving effect of the composite soil improving agent containing the biological carbon and the dolomite powder.
Example 3
And 3 months in 2019, pruning mulberry branches grown in 2 years, drying in the sun until the water content is 30%, and cutting into 2.0 cm.
The dolomite powder is added into the mulberry branches according to the weight ratio of 5 percent, and the mixture is uniformly stirred and used as a soil improving agent.
Carrying out soil improvement tests on white muddy soil of a certain farm in Mitsui county in Guangxi on continuous sunny days with the soil field water holding capacity of 40%, harrowing soil on a surface layer (0cm-20cm), applying 2 tons/mu of the composite soil improving agent on the surface layer, harrowing the surface layer uniformly, ploughing (30cm deep), harrowing the surface layer, applying 2 tons/mu of the composite soil improving agent on the surface layer, and harrowing the surface layer uniformly; ridging and deep furrows (30cm) are formed to promote drainage.
The flowering cabbage is planted on the white serofluid after soil improvement, and the result shows that the soil in the soil improvement area becomes looser and the volume weight is from 1.30g/cm compared with the control area without soil improvement3Reduced to 1.26g/cm3The soil moisture content is improved by 6.78%, the total porosity is improved by 9.89%, the organic matter content is improved by 1.42%, the root system of the flowering cabbage is increased by 1.75cm, the new root is increased by 10.35%, the nutrient utilization rate is improved by 5.42%, and the yield of the flowering cabbage is improved by 4.35%. However, the composite soil improving agent has poor adhesion with white serous soil, mulberry branches are not completely decomposed due to high lignin content and hard texture when the heart is harvested, and the decomposition microorganisms consume part of nutrients, so that the improvement degree of the nutrient utilization rate of the soil is not high, and the yield increasing rate of the heart is not high. Therefore, the soil improving effect of returning the straws with high lignin content to the field is poorer than that of returning the biological carbon to the field.
Example 4
In 2019 for 3 months, sugarcane leaves are dried until the water content is 30%, cut off to 2.0cm, stacked in a square cement tank, the cement tank is of a brick structure and hardened by cement at the front, the back, the left, the right and the lower parts, the upper part is completely open, the height in the tank is 2m, the stacking height of the materials is 1.5m, the materials are ignited and combusted, and are carbonized at the temperature of 85-90 ℃, clean water is continuously sprayed in the carbonization process to ensure that the water content of the materials is 48-52%, the materials are uniformly stirred at regular time, the bottom of the materials in the whole carbonization process is subjected to air draft by an exhaust fan, and the power of the exhaust.
6 percent of dolomite powder is added into the obtained sugarcane leaf biochar according to the weight ratio, and the mixture is uniformly stirred and used as a soil improving agent
Carrying out soil improvement tests on white muddy soil of a certain farm in Mitsui county in Guangxi on continuous sunny days with the soil field water holding capacity of 37%, harrowing soil on a surface layer (0cm-20cm), applying 2 tons/mu of the composite soil improving agent on the surface layer, harrowing the surface layer uniformly, ploughing (30cm deep), harrowing the surface layer, applying 2 tons/mu of the composite soil improving agent on the surface layer, and harrowing the surface layer uniformly; ridging and deep furrows (30cm) are formed to promote drainage.
The sugarcane is planted on the white serofluid after soil improvement, and the result shows that the soil of the soil improvement area becomes looser compared with a control area without soil improvement, but the soil improvement agent is not well mixed with the soil, so that the phenomenon that biological carbon is washed to form piles or run off exists under the rainy season condition, and the yield of the sugarcane is improved by 4.20%. The soil improvement effect of the sugarcane leaf biochar with low lignin content on the white serofluid soil is poorer than that of the mulberry branch biochar with high lignin content, and the crop yield is low.
Example 5
In 3 months of 2020, pruning 5-year-old jasmine branches, removing blades, drying until the water content is 35%, cutting to 2.5cm, stacking in a square cement tank, setting brick structures at the front, back, left, right and lower parts of the cement tank and hardening with cement, completely opening the upper surface, keeping the height in the tank to be 2m, setting the stacking height of materials to be 1.6m, igniting and burning, carbonizing at 80-85 ℃, continuously spraying clear water in the carbonization process to ensure that the water content of the materials is 47-53%, regularly and uniformly stirring, using an air draft fan at the bottom of the materials in the whole carbonization process, and setting the power of the air draft fan to be 3 KW.
8 percent of dolomite powder is added into the obtained biological carbon according to the weight ratio, and the mixture is uniformly stirred to obtain the composite soil improving agent.
Carrying out soil improvement tests on white muddy soil of a certain farm in Guangxi horizontal county on continuous sunny days with the soil field water holding capacity of 35%, carrying out soil improvement tests on the soil of a surface layer (0cm-20cm) cultivated land by harrowing, carrying out the compound soil improving agent on the surface layer by 2.5 tons/mu, carrying out uniform harrowing on the surface layer, carrying out ploughing (depth of 40cm), carrying out harrowing on the surface layer by 2.5 tons/mu, and carrying out uniform harrowing on the surface layer; ridging and deep furrowing (40cm) are carried out to promote drainage.
Jasmine is planted on the white serofluid after soil improvement, and the result shows that the soil in the soil improvement area becomes looser and the volume weight is from 1.28g/cm compared with the control area without soil improvement3Reduced to 1.07g/cm3The proportion of soil aggregates with the particle size of more than 0.25mm is increased by 6.24%, the water content of the soil is increased by 11.58%, the total porosity is increased by 9.25%, the organic content is increased by 1.67%, the root system of the jasmine is increased by 3.21cm, the nutrient utilization rate is increased by 9.82%, the yield of the jasmine is increased by 12.2%, and the water content of the jasmine is increased by 3.24%.

Claims (10)

1. A method for preparing biochar by utilizing mulberry or perennial jasmine flower branches is characterized by comprising the following steps: the mulberry or perennial jasmine flower branch is used as a raw material, and the raw material is dried in the sun, cut off and carbonized to obtain the mulberry or perennial jasmine flower branch.
2. The method for producing biochar according to claim 1, wherein: the branches are dried until the water content is 30-40%, cut into 2-4 cm long and carbonized at 80-150 ℃.
3. The method for producing biochar according to claim 2, characterized in that the carbonization is performed by: the raw materials are stacked in a square groove, the stacking height is 1.5m-2.0m, clear water is continuously sprayed in the carbonization process to enable the water content of the materials to be 45% -55%, the materials are uniformly stirred at regular time, the bottom of the materials in the whole carbonization process is subjected to air draft by an air draft fan, and the power of the air draft fan is more than or equal to 3 KW.
4. Use of biochar obtained by the method of claim 1 to modify white clay.
5. A method of improving white clay soil, comprising: the biocarbon obtained in claim 1 is mixed with dolomite powder to form a composite soil modifier, and the composite soil modifier is mixed with the dolomite.
6. The method for improving white serous fluid soil according to claim 5, characterized in that the white dolomite powder is added into the biochar obtained according to the claim 1 according to the weight percentage of 5 percent to 10 percent and is stirred evenly to obtain the composite soil improving agent.
7. The method of improving whitesoil of claim 5, wherein the composite soil improver is mixed with the whitesoil on consecutive sunny days with a field capacity in the range of 30% -50%.
8. The method of improving white clay according to claim 5, wherein the mixing of the composite soil improving agent with white clay is performed by: harrowing the soil of the surface farmland, applying the composite soil modifier on the surface layer for the first time, harrowing the surface layer uniformly, ploughing, harrowing the surface layer, applying the composite soil modifier on the surface layer for the second time, and harrowing the surface layer uniformly.
9. The method of upgrading a white mud soil of claim 8, wherein: the total amount of the compound soil improving agent is 1 to 5 tons/mu.
10. The method for improving white serofluid soil according to claim 5, wherein the composite soil improving agent is mixed with the white serofluid soil, and then ridging is carried out to form a deep trench with a depth of 30-40 cm.
CN202010486203.1A 2020-06-01 2020-06-01 Method for preparing biochar and improving white serous soil by utilizing mulberry or perennial jasmine branches Pending CN111575031A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100999673A (en) * 2006-12-30 2007-07-18 孟知云 Process for comprehensive utilization of plant discarded matter
CN104130087A (en) * 2014-08-08 2014-11-05 玉溪市大农庄农业生物科技有限公司 Preparation method of soil acidity conditioner fertilizer
CN105112061A (en) * 2015-08-20 2015-12-02 南宁三达奥克化学有限责任公司 Soil improver and preparation method therefor
CN107216226A (en) * 2017-06-30 2017-09-29 四川省地质调查院 A kind of composition and its application method, purposes for being used to nurse one's health cadmium pollution selenium-rich soil
CN109513718A (en) * 2017-09-16 2019-03-26 马井芳 A kind of method of plant waste processing
CN109847698A (en) * 2019-02-02 2019-06-07 桂林理工大学 A kind of preparation method of mulberry tree bar biomass carbon/iron and manganese oxides compound adsorbent

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100999673A (en) * 2006-12-30 2007-07-18 孟知云 Process for comprehensive utilization of plant discarded matter
CN104130087A (en) * 2014-08-08 2014-11-05 玉溪市大农庄农业生物科技有限公司 Preparation method of soil acidity conditioner fertilizer
CN105112061A (en) * 2015-08-20 2015-12-02 南宁三达奥克化学有限责任公司 Soil improver and preparation method therefor
CN107216226A (en) * 2017-06-30 2017-09-29 四川省地质调查院 A kind of composition and its application method, purposes for being used to nurse one's health cadmium pollution selenium-rich soil
CN109513718A (en) * 2017-09-16 2019-03-26 马井芳 A kind of method of plant waste processing
CN109847698A (en) * 2019-02-02 2019-06-07 桂林理工大学 A kind of preparation method of mulberry tree bar biomass carbon/iron and manganese oxides compound adsorbent

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
代琳: "生物质炭施入对白浆土碳氮变化的影响", 《浙江农业学报》 *
张彤: "《土壤与肥料》", 30 June 1984, 黑龙江科学技术出版社 *
曹境云: "《土壤与农作 第2版》", 31 October 1990, 中国水利水电出版社 *
梁继东: "《固体废物处理、处置与资源化实验教程》", 30 September 2018, 西安交通大学出版社 *
詹益兴: "《生物质热化学转化技术》", 31 October 2016, 科学技术文献出版社 *

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