47results about How to "Increase carbon sink" patented technology

The invention relates to the technical field of compound fertilizer, in particular to garden waste biomass charcoal-based compound fertilizer and a preparation method thereof. The preparation method includes steps that cracking garden waste under a high temperature to obtain garden waste biomass charcoal and combustible gas; mixing raw material of the compound fertilizer with 8-12% of garden waste biomass charcoal according to the total raw material weight of the compound fertilizer, melting, granulating and gathering granules; cooling the gathered granules under negative pressure, and sieving; enveloping the sieved granules, packaging and delivering to obtain the garden waste biomass charcoal-based compound fertilizer. The garden waste biomass charcoal-based compound fertilizer is rich in nutrient substance, coordinating and durable in nutrient element release, high in fertilizer nutrient use efficiency, capable of effectively improving and fertilizing the soil, improving the fertilizer utilization rate, increasing the organic substance content of the soil, lowering the volume weight of the soil, improving the moisture and fertility preserving ability of the soil and accelerating the crop growth, and also capable of obviously improving the crop output and improving the crop quality.

The invention relates to the technical field of soil conditioners, in particular to a straw biomass charcoal based soil conditioner and a preparation method thereof. The preparation method includes the steps: splitting straws at high temperature to obtain straw biomass charcoal and combustible gas; mixing, melting and pelletizing raw materials of the soil conditioner and the straw biomass charcoal accounting for 16-20% of the weight of the gross raw materials of the soil conditioner, and collecting pellets; cooling the collected pellets by negative pressure and screening the pellets; coating, packaging and delivering the screened pellets to obtain the straw biomass charcoal based soil conditioner. The straw biomass charcoal based soil conditioner has rich nutrient substances, nutrient elements are coordinately and persistently released, fertilizer nutrient utilization efficiency is high, soil can be effectively improved and fertilized, fertilizer utilization rate is increased, the content of soil organic matters is increased, soil bulk density is reduced, the moisture and fertilizer retention capacity of the soil is improved, crop growth is promoted, crop yield can be remarkably improved, crop quality is improved, and the soil conditioner has obvious economic benefits.

The invention relates to the technical field of soil conditioner, in particular to garden waste biomass charcoal-based soil conditioner and a preparation method thereof. The preparation method includes steps that cracking garden waste under a high temperature to obtain garden waste biomass charcoal and combustible gas; mixing raw material of the soil conditioner with 16-20% of garden waste biomass charcoal according to the total raw material weight of the soil conditioner, melting, granulating and gathering granules; cooling the gathered granules under negative pressure, and sieving; enveloping the sieved granules, packaging and delivering to obtain the garden waste biomass charcoal-based soil conditioner. The garden waste biomass charcoal-based soil conditioner is rich in nutrient substance, coordinating and durable in nutrient element release, high in fertilizer nutrient use efficiency, capable of effectively improving and fertilizing the soil, improving the fertilizer utilization rate, increasing the organic substance content of the soil, improving the moisture and fertility preserving ability of the soil and accelerating the crop growth, and also capable of obviously improving the crop output and improving the crop quality.

The invention relates to the technical field of compound fertilizers, in particular to a straw biomass charcoal based compound fertilizer and a preparation method thereof. The preparation method includes the steps: splitting straws at high temperature to obtain straw biomass charcoal and combustible gas; mixing, melting and pelletizing raw materials of the compound fertilizer and the straw biomass charcoal accounting for 8-12% of the weight of the gross raw materials of the compound fertilizer, and collecting pellets; cooling the collected pellets by negative pressure and screening the pellets; coating, packaging and delivering the screened pellets to obtain the straw biomass charcoal based compound fertilizer. The straw biomass charcoal based compound fertilizer has rich nutrient substances, nutrient elements are coordinately and persistently released, fertilizer nutrient utilization efficiency is high, soil can be effectively improved and fertilized, fertilizer utilization rate is increased, the content of soil organic matters is increased, soil bulk density is reduced, the moisture and fertilizer retention capacity of the soil is improved, crop growth is promoted, crop yield can be remarkably improved, crop quality is improved, and the fertilizer has obvious economic benefits.

The invention relates to the technical field of a soil conditioner, in particular to a bamboo biomass charcoal based soil conditioner and a preparation method thereof. The preparation method comprises the following steps of carrying high temperature pyrolyzing to bamboos to obtain bamboo-based biomass charcoal and combustible gas; melting, pelletizing and collecting particles after a raw material of the soil conditioner and 16-20% of biomass charcoal based on the total weight of the raw materials of the soil conditioner are mixed; cooling the collected particles with negative pressure, and screening; enveloping the screened particles, and packaging to ship, so as to obtain the bamboo biomass charcoal based soil conditioner. The bamboo biomass charcoal based soil conditioner provided by the invention is abundant in nutrient, the nutrient elements can be released and coordinated for a long time, the use ratio of the fertilizer nutrients is high, the soil can be effectively improved and fertilized, the use ratio of the fertilizer can be improved, the organic content of the soil can be improved, the soil bulk density can be reduced, the capacity of preserving moisture and fertility of the soil can be improved, the growth of the crops can be promoted, the yield of crops can be significantly improved, the crop quality can be improved, and the significant economic benefit can be realized.

The invention relates to the technical filed of soil conditioners, in particular to a traditional Chinese medicine residue biomass charcoal soil conditioner and a preparation method thereof. The preparation method comprises the following steps: pyrolyzing the traditional Chinese medicine residue at a high temperature to obtain traditional Chinese medicine residue biomass charcoal and a combustible gas; mixing the raw materials of the soil conditioner with the traditional Chinese medicine residue biomass charcoal of which the weight is 16-20% that of the gross raw materials of the soil conditioner, fusing, pelleting, collecting the granular material; cooling the collected granular material at negative pressure and screening; performing capsulation, packaging for delivery to obtain the traditional Chinese medicine residue biomass charcoal soil conditioner. The traditional Chinese medicine residue biomass charcoal soil conditioner provided by the invention is rich in nutrient substances, the release of nutrient elements is coordinated and lasting, the nutrition use efficiency of the soil conditioner is high, the soil can be effectively improved and fertilized, the fertilizer utilization rate is improved, the organic content of the soil is increased, the soil bulk density is reduced, the water and nutrient retention ability of the soil is improved, the crop growth is promoted, the crop yield is obviously improved, the crop quality is improved and obvious economic benefits are achieved.

The invention relates to the technical field of a composite fertilizer, in particular to a bamboo biomass charcoal based composite fertilizer and a preparation method thereof. The preparation method comprises the following steps of carrying high temperature pyrolyzing to bamboos to obtain bamboo-based biomass charcoal and combustible gas; melting, pelletizing and collecting particles after a raw material of the composite fertilizer and 8-12% of biomass charcoal based on the total weight of the raw materials of the composite fertilizer are mixed; cooling the collected particles with negative pressure, and screening; enveloping the screened particles, and packaging to ship, so as to obtain the bamboo biomass charcoal based composite fertilizer. The bamboo biomass charcoal based composite fertilizer provided by the invention is abundant in nutrient, the nutrient elements can be released and coordinated for a long time, the use ratio of the fertilizer nutrients is high, the soil can be effectively improved and fertilized, the use ratio of the fertilizer can be improved, the organic content of the soil can be improved, the soil bulk density can be reduced, the capacity of preserving moisture and fertility of the soil can be improved, the growth of the crops can be promoted, the yield of crops can be significantly improved, the crop quality can be improved, and the significant economic benefit can be realized.

The invention provides a soil improving method. The method enables the soil of to-be-improved land to be improved after two years. In the first year, no crop is planted in the to-be-improved land but the cultivation steps including rotary tillage, fertilization and irrigation are conducted, wherein natural soil conditioners are used in the rotary tillage process and organic fertilizer is used in the fertilization process. In the second year, green manure crops are planted in the to-be-improved land and organic fertilizer is used. The soil improved by using the soil improving method is characterized in that organic matter is increased, beneficial microorganism communities increase, the gas permeability and the water preservation capability of the soil are improved, the soil carbon sink is increased, the pesticide residues and heavy metal of the soil are degraded and meet the requirement of organic farming, organic conversion of the soil can be completed rapidly and the soil can pass the organic farming certification.

The invention belongs to the technical field of urea, and specifically relates to straw biomass charcoal-based urea and a preparation method thereof. The preparation method comprises following steps: straw is subjected to high temperature pyrolyzing so as to obtain straw biomass charcoal and combustible gas; an urea raw material is mixed with the straw biomass charcoal, wherein the weight amount of the straw biomass charcoal accounts for 12 to 16% of the weight amount of the urea raw material; an obtained mixture is subjected to melting and pelleting, and a pellet material is collected; the pellet material is subjected to vacuum sealed cooling and screening; and then an obtained product is coated with films, is packaged, and is discharged so as to obtain the straw biomass charcoal-based urea. The straw biomass charcoal-based urea is abundant in nutrients; nutrient releasing is coordinating and long lasting; fertilizer nutrient utilization rate is high; soil improvement and soil fertilizing can be realized effectively; fertilizer utilization rate is increased; soil organic matter content is increased; soil bulk density is recued; soil water and nutrient retention capacity is improved; crop growth is promoted; crop yield is increased greatly; crop quality is improved; and economic benefits are excellent.

The invention relates to the technical field of calcium magnesium phosphate fertilizer, in particular to garden waste biomass charcoal-based calcium magnesium phosphate fertilizer and a preparation method thereof. The preparation method includes steps that cracking garden waste under a high temperature to obtain garden waste biomass charcoal and combustible gas; mixing raw material of the calcium magnesium phosphate fertilizer with 20-24% of garden waste biomass charcoal according to the total raw material weight of the calcium magnesium phosphate fertilizer, melting, granulating and gathering granules; cooling the gathered granules under negative pressure, and sieving; enveloping the sieved granules, packaging and delivering to obtain the garden waste biomass charcoal-based calcium magnesium phosphate fertilizer. The garden waste biomass charcoal-based calcium magnesium phosphate fertilizer is rich in nutrient substance, coordinating and durable in nutrient element release, high in fertilizer nutrient use efficiency, capable of effectively improving and fertilizing the soil, improving the fertilizer utilization rate, increasing the organic substance content of the soil, lowering the volume weight of the soil, improving the moisture and fertility preserving ability of the soil and accelerating the crop growth, and also capable of obviously improving the crop output and improving the crop quality.

The invention belongs to the field of soil remediation, and particularly relates to an application of a biochar-based combination to improvement of heavy metal contaminated soil. The biochar-based combination is made from biochar and an alkaline modifier. The biochar is prepared from forestry and agricultural residues. The invention further provides the application of the biochar-based combination in soil improvement, and particularly provides the application of the biochar-based combination to reduction of the heavy metal content in soil. The experimental determination shows that by means of the technical scheme, the content of heavy metal in soil can be effectively reduced, the pH value of soil is improved, and furthermore the yield of crops planted in the soil is improved. The technical defects that in the prior art, in the remediation process of heavy metal contaminated soil, the remediation effect is unstable and the time of duration is short are primarily overcome. Meanwhile, the biochar-based combination has the advantages of being low in cost, convenient and easy to obtain and free of secondary pollution.

The invention discloses a method for using an edible mushroom residue hydrothermal carbonized product for improvement of saline-alkali soil, and the method comprises 1) raw material preparation, to be more specific, edible mushroom residue is prepared into an edible mushroom residue mixture in the ratio of material to water of 1:4 to 1:9; 2) hydrothermal carbonization, to be more specific, CaO is added into the edible mushroom residue mixture for hydrothermal carbonization for 6-12 hours, the hydrothermal carbonization temperature is 200 to 250 DEG C; the CaO addition amount is less than 2% of the edible mushroom residue amount; 3) solid-liquid separation and 4) saline alkali soil improvement and other steps. According to the method, by common reaction of the CaO and the edible mushroom residue, the acid buffer capacity of biological carbon can be improved by lime effect of the CaO; a large number of Ca<2+> produced by hydrothermal carbonization can substitute harmful sodium (Na < +>) ion in soil by ion substitution, by combining irrigation for leaching, soil salinity degree is reduce; and biological carbon composite material containing the Ca<2+> is acidic, and can quickly neutralize alkalinity of the saline alkali soil.

The invention relates to the technical field of compound fertilizers, in particular to a traditional Chinese medicine residue biomass charcoal compound fertilizer and a preparation method thereof. The preparation method comprises the following steps: pyrolyzing the traditional Chinese medicine residue at high temperature to obtain traditional Chinese medicine residue biomass charcoal and a combustible gas; mixing the raw material of the compound fertilizer and the traditional Chinese medicine residue biomass charcoal of which the weight is 8-12% that of the gross raw materials of the compound fertilizer, fusing, pelleting, collecting the granular material; cooling the collected granular material at negative pressure and screening; performing capsulation, packaging for delivery to obtain the traditional Chinese medicine residue biomass charcoal compound fertilizer. The Traditional Chinese medicine residue biomass charcoal compound fertilizer provided by the invention is rich in nutrient substances, the release of nutrient elements is coordinated and lasting, the nutrition use efficiency of the compound fertilizer is high, the soil can be effectively improved and fertilized, the utilization rate of the fertilizer is improved, the organic content of the soil is increased, the soil bulk density is reduced, the water and nutrient retention ability of the soil is improved, the crop growth is promoted, the crop yield is obviously improved, the crop quality is improved and obvious economic benefits are achieved.

The invention discloses a production method of multieffect charcoal nitrogen fertilizer. The charcoal nitrogen fertilizer is made by bonding inner granular nitrogen fertilizer (urea or ammonium bicarbonate accounting for 50-80% of total weight) and outer charcoal (charcoal including bamboo charcoal, charcoal, straw and the like fired waste and accounting for 15-40% of the total weight) with a macromolecular organic binder. The fertilizer changes the release environment of nitrogenous chemical fertilizers in soil and improves slow release performance and availability of the nitrogen fertilizer by unique physical and chemical properties of the charcoal, and the charcoal can be preserved in the soil for a longer time, and has important effects on a plurality of aspects such as improving physical structure and microbial activity of the soil, the adsorption and decomposition capacity of the soil to contaminant, carbon sink and the like. The fertilizer has simple production process and low cost and is an environmental-friendly slow release fertilizer.

The invention relates to a soil improvement agent for improving saline-alkali soil as well as a preparation method and application of the soil improvement agent. The preparation method comprises the following steps: (S1) crushing agricultural wastes, filtering, crushing shells to obtain shell powder, and preparing mixed liquid from the filtered agricultural wastes and the shell powder in a proportion; (S2) adding slaked lime and a superphosphate combined catalyst into the mixed liquid, and carrying out hydrothermal carbonizing treatment; (S3) cooling a hydrothermal carbonizing product, and carrying out solid-liquid separation, so as to respectively obtain a solid charcoal composite material and decomposition liquid; (S4) mixing the charcoal composite material, ardealite, egg shell, composted chicken manure, leaf mold and attapulgite, so as to obtain a mixture; and (S5) mixing the decomposition liquid with table vinegar to obtain a solution for liquid phase adjustment, adding the solution and the mixture into a disk granulating machine, and carrying out disk granulation and drying, so as to obtain the soil improvement agent. According to the soil improvement agent, the alkalinity and salt content of saline-alkali soil can be effectively reduced.

The invention relates to a hedge earth bank ridge-direction pitting field having functions of conserving water, soil, nitrogen and phosphorus. The field comprises ridges and multiple earth banks, and the ridges comprise ridge bodies and furrows; the multiple ridge bodies and the multiple furrows are arranged in parallel and at intervals; multiple earth banks are arranged in each furrow in the extending direction of the corresponding furrow, and each earth bank is provided with a hedge. The invention further relates to a cultivation method of the ridge-direction pitting field. The cultivation method comprises the steps of measuring the slope and length of the field; making selection between downslope ridge culture or cross-slope ridge culture according to the measured slope and length, and arranging the multiple furrows and ridge bodies, wherein the furrows and the ridge bodies are arranged in parallel and at intervals; arranging the multiple earth banks in each furrow in the extending direction of the corresponding furrow; planting plants on each earth bank for forming the corresponding hedge. According to the hedge earth bank ridge-direction pitting field and the cultivation method, the hedges are reasonably arranged, the stability and firmness of the earth banks are improved, meanwhile, the water, soil, nitrogen and phosphorus conservation effects are greatly improved, the water and soil conservation effect is made to be more ideal, environmental benefits are achieved, and meanwhile economic benefits are combined.

The invention relates to the technical field of a urea, in particular to a bamboo biomass charcoal based urea and a preparation method thereof. The preparation method comprises the following steps of carrying high temperature pyrolyzing to bamboos to obtain bamboo-based biomass charcoal and combustible gas; melting, pelletizing and collecting particles after a raw material of the urea and 12-16% of biomass charcoal based on the total weight of the raw materials of the urea are mixed; cooling the collected particles with negative pressure, and screening; enveloping the screened particles, and packaging to ship, so as to obtain the bamboo biomass charcoal based urea. The bamboo biomass charcoal based urea provided by the invention is abundant in nutrient, the nutrient elements can be released and coordinated for a long time, the use ratio of the fertilizer nutrients is high, the soil can be effectively improved and fertilized, the use ratio of the fertilizer can be improved, the organic content of the soil can be improved, the soil bulk density can be reduced, the capacity of preserving moisture and fertility of the soil can be improved, the growth of the crops can be promoted, the yield of crops can be significantly improved, the crop quality can be improved, and the significant economic benefit can be realized.

A method for developing new-climate economy and realizing global net zero carbon emission comprises steps of selecting excellent and high-yield biological kinds and repeatedly harvesting in unit time to increase biological carbon catching amount, planting trees, irrigating and planting weeds to form a multi-coverage composite ecological system to expand plant carbon storage amount, improving a ploughing way, utilizing biological fertilizers and improving soil carbon storage amount, producing carbon products and biological products in a bio-manufacturing way and expanding biological carbon sealing amount, breeding high-yield aquatic organisms to increase hydrosphere carbon conversion amount, developing animal husbandry to expand animal carbon transmission amount, collecting organisms to fill and bury to limit atmosphere total carbon amount, replacing fossil fuel by clean energy to control atmosphere carbon increase amount, conserving energy and reducing consumption and reducing man-made carbon emission, comprehensively developing and utilizing atmosphere carbon resource, building a manual carbon stock to create atmosphere carbon dividing amount. Through ways of carbon capture, storage, sealing, conversion, transmission, limit, control, decrease and utilization, global net zero carbon emission can be realized; and ecological, environmental, resource-related, economic and climatic problems can be solved.

The invention belongs to the technical field of urea, and more specifically relates to a Chinese medicine residue biomass charcoal-based urea, and a preparation method thereof. The preparation method comprises following steps: Chinese medicine residue is subjected to high temperature pyrolyzing so as to obtain Chinese medicine residue biomass charcoal and combustible gas; an urea raw material is mixed with the Chinese medicine residue biomass charcoal, and an obtained mixture is subjected to fusion and pelleting, and an obtained pellet material is collected, wherein the amount of the Chinese medicine residue biomass charcoal accounts for 12 to 16% of the total weight amount of the urea raw material; the pellet material is subjected to negative pressure cooling and screening; the screened pellet material is subjected to membrane coating, packaging, and discharging so as to obtain the Chinese medicine residue biomass charcoal-based urea. The Chinese medicine residue biomass charcoal-based urea is abundant in nutrients; nutritional element release is coordinated, and lasts long; fertilizer nutrient utilization rate is high; the Chinese medicine residue biomass charcoal-based urea is capable of improving and fertilizing soil effectively; fertilizer utilization rate is increased; soil organic content is reduced; soil bulk density is reduced; soil water and nutrient retention capacity is improved; crop growth is promoted; crop yield is increased obviously; crop quality is improved; and economic benefits are excellent.

The invention relates to the field of soil improvement, in particular to a soil improvement method. Idle land is deep plowed, inorganic adsorbents, chelating agents and biological adsorbents are uniformly applied, the land is leveled and properly irrigated, and the treated land is idled for four to six months and then can be used for planting again. The method is short in soil improvement period, rapid in effect, moderate in improvement cost and high in land applicability. The method has the advantages that soil pollution states can be rapidly improved, heavy metal pollution improvement effects are the best, soil permeability water-retaining properties are improved, soil carbon sink is increased, pesticide residues and heavy metal of soil are degraded to meet organic planting requirements, organic conversion of the soil can be rapidly finished, the soil improvement period is short, the effects are rapid, cost can be controlled, organic planting standards can be met basically within six months, bad conditions of the soil are improved, the quality of planted food is directly changed, and fitness of people is benefited.

The invention relates to the technical field of a calcium magnesium phosphate fertilizer, in particular to a bamboo biomass charcoal based calcium magnesium phosphate fertilizer and a preparation method thereof. The preparation method comprises the following steps of carrying out high temperature pyrolyzing to bamboos to obtain bamboo-based biomass charcoal and combustible gas; melting, pelletizing and collecting particles after a raw material of the calcium magnesium phosphate fertilizer and 20-24% of biomass charcoal based on the total weight of the raw materials of the calcium magnesium phosphate fertilizer are mixed; cooling the collected particles with negative pressure, and screening; enveloping the screened particles, and packaging to ship, so as to obtain the bamboo biomass charcoal based calcium magnesium phosphate fertilizer. The bamboo biomass charcoal based calcium magnesium phosphate fertilizer provided by the invention is abundant in nutrient, the nutrient elements can be released and coordinated for a long time, the use ratio of the fertilizer nutrients is high, the soil can be effectively improved and fertilized, the use ratio of the fertilizer can be improved, the organic content of the soil can be improved, the soil bulk density can be reduced, the capacity of preserving moisture and fertility of the soil can be improved, the growth of the crops can be promoted, the yield of crops can be significantly improved, the crop quality can be improved, and the significant economic benefit can be realized.

The invention relates to the technical field of calcium magnesium phosphate fertilizer, in particular to a straw biomass charcoal based calcium magnesium phosphate fertilizer and a preparation method thereof. The preparation method includes the steps: splitting straws at high temperature to obtain straw biomass charcoal and combustible gas; mixing, melting and pelletizing raw materials of the calcium magnesium phosphate fertilizer and the straw biomass charcoal accounting for 20-24% of the weight of the gross raw materials of the calcium magnesium phosphate fertilizer, and collecting pellets; cooling the collected pellets by negative pressure and screening the pellets; coating, packaging and delivering the screened pellets to obtain the straw biomass charcoal based calcium magnesium phosphate fertilizer. The straw biomass charcoal based calcium magnesium phosphate fertilizer has rich nutrient substances, nutrient elements are coordinately and persistently released, fertilizer nutrient utilization efficiency is high, soil can be effectively improved and fertilized, fertilizer utilization rate is increased, the content of soil organic matters is increased, soil bulk density is reduced, the moisture and fertilizer retention capacity of the soil is improved, crop growth is promoted, crop yield can be remarkably improved, crop quality is improved, and the fertilizer has obvious economic benefits.

The invention relates to the technical field of calcium magnesium phosphate fertilizers, in particular to a traditional Chinese medicine residue biomass charcoal calcium magnesium phosphate fertilizer and a preparation method thereof. The preparation method comprises the following steps: pyrolyzing the traditional Chinese medicine residue at a high temperature to obtain traditional Chinese medicine residue biomass charcoal and a combustible gas; mixing the raw materials of the calcium magnesium phosphate fertilizer with the traditional Chinese medicine residue biomass charcoal of which the weight is 20-24% that of the gross raw materials of the compound fertilizer, fusing, pelleting, collecting the granular material; cooling the collected granular material at negative pressure and screening; performing capsulation, packaging for delivery to obtain the traditional Chinese medicine residue biomass charcoal calcium magnesium phosphate fertilizer. The traditional Chinese medicine residue biomass charcoal calcium magnesium phosphate fertilizer provided by the invention is rich in nutrient substances, the release of nutrient elements is coordinated and lasting, the nutrition use efficiency of the compound fertilizer is high, the soil can be effectively improved and fertilized, the utilization rate of the fertilizer is improved, the organic content of the soil is increased, the soil bulk density is reduced, the water and nutrient retention ability of the soil is improved, the crop growth is promoted, the crop yield is obviously improved, the crop quality is improved, and obvious economic benefits are achieved.

The invention discloses a floating type carbon sequestration shellfish and algae aquaculture method. The method includes that a floating type carbon sequestration shellfish and algae farm device which is capable of lifting shellfish to the water surface and keeping for a period of out-of-water time by means of inflation, wherein the out-of-water time is 0.5h-48h. Favorable functions of growth simulation and propagation of certain specific shellfish organisms can be realized by means of out-of-water treatment, respiration of the shellfish can be promoted, and carbon sequestration of the whole device is effectively improved. In addition, storm resistance can be improved by changing depth of immersion. Therefore, the floating type carbon sequestration shellfish and algae aquaculture method has the advantages of high carbon sequestration capability, high economic benefit, convenience in management and low storm influences.

The invention relates to a preparation method for a regenerated wood plastic composite material, and belongs to the technical field of macromolecular material preparation. The preparation method comprises the steps: pretreating regenerated polyethylene, regenerated polypropylene and PVC, carrying out co-mixing modification with styrene butadiene rubber, POE and a superfine talc powder to prepare a basic material of the wood plastic composite material, then compositing with modified wood flour, and preparing the regenerated wood plastic composite material. The selected regenerated polyethylene and regenerated polypropylene are both regenerated recycled materials, and the utilization value of the regenerated plastics is effectively improved; with deep processing utilization of the wood flour, recycling reutilization of the biomass material is realized, and the ecological environment is protected. The regenerated wood plastic composite material prepared by the composite modification technology has the characteristics of light weight, high rigidity, high toughness and recyclability; and the product after forming and processing is more lignified, and has more superior performance and wider use scope than wood plastic products modified by single polyolefin or PVC and wood flour.

The invention discloses a modified biochar-based soil conditioner for repairing Cd pollution and a preparation method and application thereof, belonging to the field of soil treatment. The modified biochar-based soil conditioner provided by the invention is prepared by heating agricultural / industrial waste and an alkaline additive. The soil conditioner obtained after a high-temperature reaction can effectively reduce the content of available Cd in acid soil contaminated by heavy metal, increase the pH value of the soil, promote vegetable growth and reduce the accumulation amount of heavy metalCd in vegetables. Meanwhile, the modified charcoal-based soil conditioner provided by the invention has the advantages of low cost, convenience and easiness in preparation and no secondary pollution.

The invention belongs to the technical field of comprehensive utilization of biomass and livestock and poultry manure, and particularly relates to a poly-generation method employing coupling of biomass with livestock and poultry manure. The poly-generation method comprises the following steps: burning straws to generate power so as to provide heat, pretreating the straws and the livestock and poultry manure, respectively hydrolyzing and acidifying the straws and livestock and poultry manure, feeding the straws and livestock and poultry manure having been hydrolyzed and acidified into a CSTR anaerobic fermentation tank, allowing the hydrolyzed and acidified straw and livestock and poultry manure to undergo medium-temperature anaerobic fermentation in the CSTR anaerobic fermentation tank so as to obtain biogas and biogas slurry, subjecting the biogas slurry to solid-liquid separation before preparation of an organic fertilizer from the biogas slurry, and subjecting the biogas to drying, gas-water separation, desulfurization and filtration before preparation of natural gas from the biogas. According to the invention, the straw and the livestock and poultry manure are coupled and recycled to generate electricity, heat, cold, biogas and organic fertilizer, so harmless utilization of resources is realized.

The invention belongs to the technical field of fertilizers, and particularly relates to a saline-alkali soil soybean fertilizer and a fertilizing method for improving saline-alkali soil soybean nutrient efficiency. The invention provides a soybean fertilizer for saline-alkali soil. The soybean fertilizer comprises a base fertilizer, a seed fertilizer, a topdressing, a nitrification inhibitor anda foliar fertilizer which are independently packaged, wherein the base fertilizer comprises an organic fertilizer, a soil conditioner and charcoal. The fertilizer combination provided by the inventioncan improve the fertilizer utilization rate and achieve the technical effect of improving the crop yield; and the fertilizer composition provided by the invention can improve the physical and chemical properties of soil, improve the productivity of soil and reduce environmental pollution.

The invention provides an Fe / graphene / biomass charcoal carbon-based slow-release compound fertilizer special for corn and an application of the compound fertilizer, and belongs to the technical fieldof fertilizers. The preparation method comprises the following steps: mixing crushed corn straw fragments with graphene, and sequentially carrying out firing at temperatures of 95-105 DEG C, 190-210 DEG C, 385-415 DEG C and 495-505 DEG C, washing the obtained graphene biomass charcoal to be neutral, carrying out crushing and sieving, mixing the collected graphene biomass carbon particles with an FeCl3 solution, and carrying out heat treatment to obtain the Fe / graphene / biomass charcoal. The carbon-based slow-release compound fertilizer special for corn comprises Fe / graphene / biomass charcoal, ammonium sulfate, potassium dihydrogen phosphate, bentonite, calcium sulfate, a trichoderma viride F7 culture substance and a mixture of borax and zinc sulfate. Through the slow-release action of biomass charcoal and the decomposition effect of biological strains, absorption of corn crops to nutrient elements is enhanced, growth conditions of corn is improved, and the effects of losing weight and enhancing efficiency are achieved.

The invention discloses compound fertilizer for simultaneously increasing oil-tea camellia seed yield and carbon sequestration capacity of an oil-tea camellia stand. The compound fertilizer is prepared from organic fertilizer base material and inorganic chemical fertilizer, and is specifically prepared from the following components in parts by weight: 20 to 25 parts of the organic fertilizer base material, 35 to 45 parts of urea, 10 to 15 parts of ammonium phosphate, 15 to 20 parts of potassium chloride, 10 to 15 parts of calcium magnesium phosphate powder and 1 to 2 parts of trace elements. The compound fertilizer which is capable of not only increasing the oil-tea camellia seed yield of the oil-tea camellia stand, but also enhancing the carbon sequestration capacity of the oil-tea camellia stand according to the nutritional growth characteristic of oil-tea camellia trees and through reasonable matching of the content of organic fertilizer, inorganic fertilizer and mineral elements and balanced application is provided, so that coordinated development of economic benefit and ecological environment benefit is realized.