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37results about How to "Reduce heavy metal activity" patented technology
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Method for reducing content of cadmium in middle rice
InactiveCN106069429AEfficient use ofHigh in nutrientsHorticulture methodsRice cultivationResource utilizationSoil heavy metals
The invention discloses a method for reducing the content of cadmium in middle rice. The method includes the following steps that after middle rice of the first year is harvested, middle rice straw is returned to the field directly, and tillage is conducted so that the middle rice straw can be evenly mixed with soil; hyperaccumulation plants are planted in a paddy; after the hyperaccumulation plants are removed from March to May in the second year, soil heavy metal passivator is scattered on the surface of soil of the paddy; tillage is conducted, and base fertilizer is applied 3-5 days later; tillage is conducted, and rice is transplanted; during planting of rice, a foliar resistance control agent is sprayed in the later tillering stage and the booting stage of rice respectively, wherein spraying time interval is 5-10 days; field drying is conducted in the later tillering stage, natural drying is conducted in the maturation stage, and flooding irrigation is conducted in other development stages. According to the method, crop production and straw resource utilization are not affected, the dual targets of reducing the paddy soil cadmium content and reducing the rice cadmium content are achieved under the combined action of plant extraction, soil passivation, foliar resistance control and water management, and effects are more remarkable compared with other combination technologies.
Owner:HUNAN YONKER ENVIRONMENTAL PROTECTION RES INST
Tobacco stalk biochar soil conditioner and improvement method for tobacco field soil
ActiveCN104789229AReduce heavy metal activityEnhance metabolic functionOrganic fertilisersSoil conditioning compositionsSoil scienceEnvironmental engineering
The invention discloses a tobacco stalk biochar soil conditioner capable of reducing the content of heavy metals in tobacco, improving the tobacco quality and improving the soil environment, as well as an improvement method for tobacco field soil. The tobacco stalk biochar soil conditioner is prepared by mixing the following raw materials in parts by weight: 40-60 parts of tobacco stalk biochar and 40-60 g of a passivant. The tobacco stalk biochar soil conditioner is easy to obtain raw materials, simple in preparation method and low in cost, can effectively reduce the content of heavy metals in tobacco, and can improve the quality of tobacco field soil; a large number of waste tobacco stalks generated in tobacco growing areas are adopted as the raw material, the resource recycling of waste materials is realized, the sustainable development of the tobacco industry is facilitated, and the tobacco stalk biochar soil conditioner is suitable for large-scale popularization and application in the field of tobacco growing.
Owner:HENAN AGRICULTURAL UNIVERSITY
Planting method of jute in heavy-metal contaminated soil
ActiveCN102934580ANormal growth cyclePlateau Hemp YieldPlant protectionSoil scienceSoil heavy metals
The invention discloses a planting method of jute in heavy-metal contaminated soil. The method comprises the following steps of: A, preparing soil and building a field, and applying passivator to reduce activity of heavy metal in the soil; B, selecting a specific jute variety with strong heavy metal contamination resistance, sowing in an enough amount at proper time to guarantee full seedlings; C, determining appropriate close planting, thinning / finally singlings in good time, and reserving enough basic seedlings; and D, intertilling / weeding in time, rationally topdressing / irrigating to culture effective strong plants; E, reinforcing prevention and control of diseases and insect pests to realize high yield of jute. By the jute planting method, the average yields of raw stems in light, medium and heavy contaminated jute fields are respectively 181.0+ / -16.4, 174.9+ / -15.7 and 158.5+ / -15.3kg / mu, which reaches the high-yield level of the jute growing area in South China; and the content of heavy metal in raw jute can be controlled in a range of related standard limit, so that agricultural safety and effective utilization of heavy metal contaminated soil can be realized. The method is simple in technology and practical, and has wide application prospect in broad heavy metal contaminated areas.
Owner:INST OF SUBTROPICAL AGRI CHINESE ACAD OF SCI
Soil conditioner capable of reducing activity of heavy metal in soil and preparation method thereof
InactiveCN108410474AReduced activityImprove fertilityAgriculture tools and machinesOther chemical processesSoil scienceHeavy metal chelation
The invention discloses a soil conditioner capable of reducing activity of heavy metal in soil and a preparation method thereof. The soil conditioner is prepared from sulfydryl modified plant straw powder, an inorganic porous material, caustic dross, humic acid mineral powder, a compound microbial fertilizer and a heavy metal chelating agent. According to parts by weight of the sulfydryl modifiedplant straw powder, the inorganic porous material, the caustic dross, the humic acid mineral powder, the compound microbial fertilizer and the heavy metal chelating agent, the sulfydryl modified plantstraw powder is 3 to 7 parts, the inorganic porous material is 15 to 45 parts, the caustic dross is 1 to 5 parts, the humic acid mineral powder is 20 to 40 parts, the compound microbial fertilizer is2 to 8 parts, and the heavy metal chelating agent is 0.5 to 3 parts. The soil conditioner disclosed by the invention can effectively reduce activity of the heavy metal in acidic heavy metal contaminated soil and further has the advantages of low cost, easiness in implementation, greenness and environmental friendliness.
Owner:张鑫
Sludge treatment method and agricultural sludge biochar acquired by adopting same
ActiveCN103523775AEliminate pollutionReduce heavy metal activityCarbon compoundsPolycyclic aromatic hydrocarbonDecomposition
The invention discloses a sludge treatment method and an agricultural sludge biochar acquired by adopting the method. The agricultural sludge biochar is mainly prepared through low-temperature oxygen-limited decomposition of organic and inorganic antidotes and citizen sludge which are uniformly mixed, and the antidotes accounts for 3%-20% of the amount of dry matter of the citizen sludge. With the adoption of the sludge treatment method, activity and total amount of heavy metal in a carbonized product can be effectively reduced, pathogenic bacteria are killed, organic pollutants such as polycyclic aromatic hydrocarbon and the like are eliminated, and nutrients can be maintained to the greatest extent, so that the product is applicable to the plantation fields such as agriculture, forestry and the like.
Owner:SOUTH CHINA AGRI UNIV
Multifunctional bio-organic fertilizer and preparation method thereof
PendingCN106810403AGood restorativeImprove water and fertilizer retention performanceCalcareous fertilisersBio-organic fraction processingAgricultural residuePlant growth
The invention discloses a multifunctional bio-organic fertilizer and a preparation method thereof, and relates to the technical field of agricultural fertilizers. The multifunctional bio-organic fertilizer is prepared from the following raw materials in parts by weight: 40-60 parts of forestry and agricultural residues, 10-16 parts of active humic acid, 5-15 parts of degreased tea-seed pancake, 0.5-1.5 parts of expanded vermiculite, 0.2-0.8 part of abscisic acid, 0.2-0.8 part of zymophyte, 0.2-0.8 part of beneficial bacterium, 0.2-0.8 part of degrading bacteria, 5-9 parts of urea, 8-12 parts of calcium magnesium phosphate fertilizer, 4-8 parts of potassium sulfate, and 0.5-1.5 parts of medium and trace element. The multifunctional bio-organic fertilizer has the characteristics that the nutritional elements for plant growing are contained; the organic substances are rich; in addition, the contaminated oil can be remediated; the soil structure can be activated; the multifunctional bio-organic fertilizer is applicable to the planting of crops such as rice of southern China, vegetables, watermelon, tobacco, fresh ginger, rape and tea, fruits such as naval orange, grapefruit and pear, garden nursery stock and flowers.
Owner:HUNAN ZHONGKE AGRI
Saline-alkali soil improving agent and preparation method thereof
InactiveCN108840766AReduce salinityImprove permeabilitySuperphosphatesCalcareous fertilisersAlkali soilPhosphate
The invention discloses a saline-alkali soil improving agent and a preparation method thereof. The saline-alkali soil improving agent comprises the following components in parts by weight: 8 to 12 parts of desulfurized gypsum, 30 to 50 parts of biogas residue, 20 to 30 parts of sepiolite ore powder, 10 to 15 parts of oyster shell powder, 5 to 10 parts of phosphate, 3 to 8 parts of humic acid ore powder, 2 to 6 parts of expanded vermiculite powder, 1 to 5 parts of ferrous sulfate, 2 to 4 parts of modified plant straw powder, 0.5 to 1.5 parts of diatomite, 0.4 to 0.8 part of carboxymethyl chitosan, 0.3 to 0.7 part of rotten vinasse, 0.2 to 0.6 part of a microbial preparation and 3 to 7 parts of an organic fermented fertilizer. The saline-alkali soil improving agent can effectively improve the soil structure and reduce the alkalization degree of the soil so as to promote the growth of crops and increase production.
Owner:合肥卓畅农业科技有限公司
Planting method of flax in heavy-metal contaminated soil
ActiveCN102934581ANormal growth cyclePlateau Hemp YieldClimate change adaptationExcrement fertilisersContaminated soilsAgriculture
The invention discloses a planting method of flax in heavy-metal contaminated soil. The method comprises the following steps of: A, preparing soil and building a field, and applying passivator to reduce activity of heavy metal in the soil; B, selecting a specific flax variety with strong heavy metal contamination resistance, sowing in enough amount at proper time to guarantee full seedlings; C, rationally and closely planting, intertilling / weeding / topdressing in time to culture effective robust plants; and D, reinforcing prevention and control of diseases and insect pests, harvesting at proper time, and drying in the sun and storing appropriately. By the flax planting method, the average yields of raw stems in light, medium and heavy contaminated soil is respectively 308.2+ / -29.0, 283.2+ / -30.3 and 254.7+ / -28.6kg / mu, which reaches the high-yield level of the flax growing areas in South China; and the content of heavy metal in raw stem coarse fiber can be controlled in a range of related standard limit, so that agricultural safety and effective utilization of heavy metal contaminated soil can be realized. The method is simple in technology and practical, and has wide application prospect in broad heavy metal contaminated areas.
Owner:INST OF SUBTROPICAL AGRI CHINESE ACAD OF SCI
Soil activating agent and preparation method thereof
InactiveCN108440133AImprove soil structureImprove soil fertilityCalcareous fertilisersExcrement fertilisersHumic acidLeavening agent
The invention discloses a soil activating agent and a preparation method thereof. The soil activating agent is prepared from 8-12 parts of modified zeolite powder, 30-50 parts of biogas residues, 20-30 parts of straw powder, 10-15 parts of rice bran, 5-10 parts of rape seed cakes, 3-8 parts of humic acid mineral powder, 2-6 parts of swelling vermiculite powder, 1-5 parts of shell powder, 2-4 partsof gypsum powder, 0.5-1.5 parts of kieselguhr, 0.4-0.8 part of carboxymethyl chitosan, 0.3-0.7 part of leavening agent, 0.2-0.6 part of microelement additive and 3-7 parts of organic fertilizer. Theprovided soil activating agent can effectively improve soil structure, activate edaphon, enhance soil fertility, improve the soil capacity of preserving moisture and fertility, facilitate forming of soil aggregates, and be long in lasting time of preserving moisture and fertility and aggregating capacity, simple in preparation, low in cost, easy to operate, green and environmentally friendly.
Owner:合肥卓畅农业科技有限公司
A method of preparing a plant cultivation medium by utilizing agriculture and forestry waste and the prepared cultivation medium
InactiveCN106167430AStable physical propertiesNutritional balanceBio-organic fraction processingExcrement fertilisersGrowth plantPlant cultivation
A method of preparing a plant cultivation medium by utilizing agriculture and forestry waste and the prepared cultivation medium are disclosed. The method includes 1) spraying the agriculture and forestry waste with water to adjust the water content of the agriculture and forestry waste, and 2) adding a fermentation catalyst, a microbe agent and brown sugar into the agriculture and forestry waste, fully stirring and fermenting. The plant cultivation medium is balanced in nutrition, high in nutrient contents, reasonable in structure, stable in physical properties, and convenient for plant absorption, meets plant growth needs and increases the survival rate of plant cultivation and ornamental effects.
Owner:BEIJING FORESTRY UNIVERSITY
Method for planting kenaf on heavy metal contaminated soil
ActiveCN102939836AStrong resistance to heavy metal pollutionNormal growth cycleHorticultureSoil-working methodsSoil heavy metalsPest control
The invention discloses a method for planting kenaf on heavy metal contaminated soil. The method includes the following steps: A, preparing the land and building an area, and applying an passivant to reduce the activity of soil heavy metal; B, selecting a specific kenaf variety with high heavy metal pollution resistant capacity, sowing sufficiently in due time, and guaranteeing a full stand through one sawing; C, determining suitable close planting, performing thinning and final singling in due time, and reserving basic seedlings; D, intertilling and weeding timely, topdressing and irrigating reasonably, and cultivating effective strong plants; and E, strengthening pest control and achieving high yield of the kenaf. The original kenaf outputs of mild, moderate and serious contaminated kenaf gardens are 276.2+ / -25.5, 247.6+ / -23.4 and 220.9+ / -21.2kg / mu respectively when the method is used for planting the kenaf, the high yield level in southern kenaf areas in our country is reached, content of heavy metal in the original kenaf can be controlled within a relative standard limit, agricultural safety and efficient utilization of the heavy metal contaminated soil are achieved, the technique is simple and convenient, the method is easy to implement, and an extremely wide application prospect is provided in vast heavy metal contaminated areas.
Owner:INST OF SUBTROPICAL AGRI CHINESE ACAD OF SCI
Alkaline organic fertilizer for restoring soil polluted by heavy metals and preparation method of alkaline organic fertilizer
InactiveCN107473904AEffective pH adjustmentReduced effectivenessCalcareous fertilisersBio-organic fraction processingLivestock manureDiammonium phosphate
The invention discloses an alkaline organic fertilizer for restoring soil polluted by heavy metals and a preparation method of the alkaline organic fertilizer, and relates to the technical field of agricultural fertilizers. The alkaline organic fertilizer is prepared from, by weight, 1-3 parts of urea, 1-3 parts of potassium sulphate, 2-6 parts of diammonium phosphate, 10-30 parts of tobacco straw, 30-40 parts of alkaline ash, 15-35 parts of livestock manure, 10-30 parts of bean stalks, 10-30 parts of purple soil, 1-3 parts of microelements, 0.5-1.5 parts of biological bacteria, 3-5 parts of lime nitrogen and 0.02-0.04 part of nitragin. The alkaline organic fertilizer has a good restoring effect on the soil polluted by the heavy metals, is suitable for being used in acidic soil, can be used for farmland soil heavy metal pollution restoration and ecological improvement in southern paddy fields in China, and can also be used for dry farmland soil heavy metal pollution restoration and ecological improvement in the south.
Owner:HUNAN ZHONGKE AGRI
Organo-mineral biochar complex formula fertilizer and preparation method thereof
InactiveCN106431568ARaise the ratioReduce the relative proportionBio-organic fraction processingExcrement fertilisersNitrogenPlant Sources
The invention discloses organo-mineral biochar complex formula fertilizer and a preparation method thereof. The preparation method of the organo-mineral biochar complex formula fertilizer comprises the following steps: (1) a premix is obtained by mixing organic matter with biochar; (2) the premix obtained in the step (1) is subjected to composting fermentation; (3) the organo-mineral biochar complex formula fertilizer is obtained by adding chemical fertilizer to a fermentation product obtained in the step (2). According to the complex formula fertilizer, plant-sourced organic matter and animal-sourced organic matter are subjected to mixed fermentation, raw materials are subjected to biosafety disposal, the biochar is formed and plays an adsorption role, and clean organic fertilizer is produced; a balanced and reasonable NPK formula is realized according to the organic matter with difference sources, and maximization of the fertilizer efficiency is realized.
Owner:CHINA AGRI UNIV
Passivator for arsenic-cadmium composite contaminated soil as well as preparation method and application method thereof
ActiveCN110484262AAchieve adsorptionAchieve fixationOther chemical processesContaminated soil reclamationCarbon compositesPollution
The invention belongs to the field of soil pollution treatment, and discloses a passivation remediation agent for arsenic-cadmium composite contaminated soil, and a preparation method and applicationmethod thereof. Wormcast is utilized to enrich organic matters, adsorption and complexing immobilization of cadmium are realized, and iron (hydroxide) oxide formed by zero-valent iron in soil is utilized to generate adsorption precipitation with arsenic, so that synchronous passivation of arsenic and cadmium is realized. In addition, the wormcast can remarkably improve the soil quality, and comprehensive treatment and remediation can be conducted on the arsenic-cadmium composite contaminated soil. On one hand, zero-valent iron serving as a strong reducing agent is extremely easy to oxidize toform amorphous iron (hydroxide) oxide, and more adsorption sites are provided for arsenic and cadmium; on the other hand, the wormcast provides more organic matters for soil, increases cation exchangecapacity, increases the pH of the soil, and facilitates adsorption and immobilization of cadmium and activity reduction. Besides, the wormcast and iron are partially combined to form an iron oxide-organic carbon composite, so that soil carbon immobilization is facilitated, and the soil quality is improved.
Owner:ENVIRONMENT & PLANT PROTECTION INST CHINESE ACADEMY OF TROPICAL AGRI SCI
Special biological organic fertilizer for forage grass and production method of special biological organic fertilizer
InactiveCN110526787AImprove fertilityImprove stress resistanceAlkali orthophosphate fertiliserAmmonium orthophosphate fertilisersBiotechnologySodium Bentonite
The invention belongs to the technical field of production of fertilizers, and particularly relates to a special biological organic fertilizer for forage grass and a production method of the special biological organic fertilizer. The special biological organic fertilizer for the forage grass comprises the following raw materials in parts by weight: 70-100 parts of animal excrement, 50-60 parts oftung residues, 50-65 parts of sugarcane tail tips, 30-50 parts of mushroom bran, 20-40 parts of soy sauce lees, 10-40 parts of rapeseed cakes, 3-5 parts of bentonite, 10-20 parts of molasses, 3-6 parts of diammonium phosphate, 4-7 parts of magnesium sulfate heptahydrate, 5-10 parts of potassium humate, 1.0-1.5 parts of a trace element fertilizer, 5-8 parts of bone powder, 5-7 parts of cortex meliae powder, 4-6 parts of baeckea frutescen powder and 13-18 parts of a fermentation microbial inoculum. The special biological organic fertilizer for the forage grass is rich in organic matters and a large amount of beneficial biological bacteria, the survival rate of the beneficial biological bacteria in soil is high, the number of beneficial microorganisms in the soil can be effectively increased,and the activation property of the soil can be improved; and by application of the special biological organic fertilizer for the forage grass, growth of the forage grass can be promoted effectively,and the yield and quality of the forage grass are improved.
Owner:李彩金
Soil restoration agent capable of inhibiting heavy metal diffusion pollution
InactiveCN105985779AImprove buffering effectImprove toleranceAgriculture tools and machinesContaminated soil reclamationMonocalcium phosphateChelation
The invention discloses a soil restoration agent capable of inhibiting heavy metal diffusion pollution. The soil restoration agent capable of inhibiting heavy metal diffusion pollution is prepared from the following raw materials in parts by weight: 25-26 parts of fine sand, 20-22 parts of wood charcoal, 2-3 parts of magnesium sulfate, 14-15 parts of goat bone powder, 8-10 parts of calcium biphosphate, 82-86 parts of deseeded sunflower head, 33-36 parts of switchgrass branches and leaves, 22-25 parts of kaolin, 6-8 parts of calcium carbonate, 30-36 parts of slash pine needle and a right amount of water. The soil restoration agent can form stable chelate compounds with heavy metal ions in the soil, effectively adsorb and fix the free heavy metal ions in the soil, lower the activity of the heavy metals and prevent the plants from absorbing the heavy metals. The porous biological charcoal is utilized to specifically adsorb the heavy metal ions so as to control the transfer of the heavy metal ions in the soil, thereby lowering the pollution diffusion on the premise of treating the soil pollution. The soil restoration agent has the advantages of short restoration period and wide application range.
Owner:凤阳徽亨商贸有限公司
Soil conditioner capable of reducing activity of heavy metals, preparation method and soil improvement method
InactiveCN108048104AReduce usagePrevent reactivationAgriculture tools and machinesContaminated soil reclamationOxide compositeOperability
The invention provides a soil conditioner capable of reducing activity of heavy metals, a preparation method and a soil improvement method. The soil conditioner capable of reducing activity of heavy metals is prepared from components in parts by weight as follows: 20-30 parts of a chitosan / graphene oxide composite, 5-10 parts of silicate, 15-25 parts of slaked lime, 3-5 parts of bentonite, 5-10 parts of biomass waste, 20-25 parts of organic fertilizer, 1-3 parts of humic acid and 1-3 parts of a binder. The soil conditioner capable of reducing activity of heavy metals has the advantages of lowcost, high operability and the like and can prevent the heavy metals from being activated again, the usage amount of chemical fertilizer is reduced and the planting cost is saved.
Owner:GUANGDONG RES INSTITITUTE OF PETROCHEM & FINE CHEM ENG
Heavy metal polluted bottom mud efficient curing material prepared based on coal-based solid waste
PendingCN112194391ALow priceWide variety of sourcesCement productionPotassium hydroxideEnvironmental engineering
The invention discloses a heavy metal polluted bottom mud efficient curing material prepared based on coal-based solid waste. The heavy metal polluted bottom mud efficient curing material comprises coal-based solid waste powder, calcium oxide, a composite activator and water, wherein the composite activator comprises sodium silicate and potassium hydroxide, the modulus of sodium silicate is 1-1.05, and the mass ratio of sodium silicate to potassium hydroxide is 4: 1. The raw materials are solid wastes, the price is low, and the source is wide; and the coal-based solid waste is consumed, occupied land resources are reduced while the national expenditure for treating the coal-based solid waste is reduced, and good environmental protection benefits are achieved. According to the invention, the heavy metal polluted bottom mud can be effectively solidified, meanwhile, the activity of heavy metal in the bottom mud is reduced, the solidified bottom mud is harmless, and resource utilization can be achieved.
Owner:中能化江苏地质矿产设计研究院有限公司
Soil activation powder
InactiveCN108658699ASimple structureImprove fertilityCalcareous fertilisersAnimal corpse fertilisersRetention timeBiological activation
The invention discloses soil activation powder which comprises the following components in parts by weight: 8-12 parts of modified zeolite powder, 30-50 parts of biogas residues, 20-30 parts of strawpowder, 10-15 parts of rice bran, 5-10 parts of rape seed cakes, 3-8 parts of humic acid ore powder, 2-6 parts of expanded vermiculite powder, 1-5 parts of shell powder, 2-4 parts of gypsum powder, 0.5-1.5 parts of kieselguhr, 0.4-0.8 part of carboxymethyl chitosan, 0.3-0.7 part of a fermentation agent, 0.2-0.6 part of a trace element additive and 3-7 parts of an organic fertilizer. By adopting the soil activation powder disclosed by the invention, soil structures can be effectively improved, soil microorganisms can be activated, soil fertility can be improved, in addition, the water and fertilizer retention capability of soil can be improved, soil aggregate formation can be promoted, a long water and fertilizer retention time is achieved, the aggregation capability lasts for a long time,and the soil activation powder is simple to prepare, low in cost, easy to implement and green and environmentally friendly.
Owner:吴小戈
Dyeing sludge treatment device
InactiveCN102976574AGood adjustment stabilityReduce heavy metal activitySludge treatment by de-watering/drying/thickeningWaste water treatment from textile industryElectric heatingAnaerobic digestion
The invention discloses a dyeing sludge treatment device which sequentially comprises a settling box, an anaerobic digestion reactor, a dryer, a grinding device and a combustion device according to the sludge treatment process, wherein an electric heating sleeve for heating and drying material is mounted at the outer part of the dryer; a gas outlet is formed on the anaerobic digestion reactor; a discharge pipeline is arranged at the lower parts of the settling box, the anaerobic digestion reactor, the dryer, the grinding device and the combustion device respectively; the discharge pipeline of the settling box is connected with a feed port of the anaerobic digestion reactor; the discharge pipeline of the anaerobic digestion reactor is connected with a feed port of the dryer; the discharge pipeline of the dryer is connected with a feed port of the grinding device; the discharge pipeline of the grinding device is connected with a feed port of the combustion device; and a discharge valve is arranged on each discharge pipeline. The treatment device disclosed by the invention can effectively reduce concentration of harmful substances in sludge and reduce pollution caused after sludge discharge.
Owner:ZHANGJIAGANG HUAYUAN DYEING & WEAVING
Microbial organic fertilizer for improving soil that has been used for planting multi-batch vegetable and fruit and preparation method thereof
InactiveCN105732220AHigh activityReduced activityExcrement fertilisersFertilizer mixturesMicroorganismOrganic fertilizer
The invention discloses a microbial organic fertilizer for improving the soil that has been used for planting multi-batch vegetable and fruit and a preparation method thereof. The microbial organic fertilizer is prepared by mixing a specially-made microbial composite inoculant, manure, and edible fungus residues according to a certain ratio and then subjecting the mixture to aerobic fermentation. The microbial chelating agent is prepared by mixing microbial floras, a culture liquid, and a heavy metal passivating material according to a weight ratio of 1:7:12. Through an aerobic composting technology, and the cooperative effect between microorganisms and a heavy metal passivating material, accumulated heavy metals in soil and manure are efficiently passivated, the output of fruit and vegetable is prominently increased, the labor cost is reduced, the harmless treatment of livestock and cattle manure compost is realized, and a high quality composite microbial organic fertilizer is provided.
Owner:LINYI ACADEMY OF AGRI SCI
Heavy metal ion passivation stabilizer for flowback fluid treatment residues and preparation method
ActiveCN112479333AAddress toxicitySolve pollutionWaste water treatment from quariesOther chemical processesMicroorganismSorbent
The invention provides a heavy metal ion passivation stabilizer for flowback fluid treatment residues and a preparation method. The stabilizer is prepared from the following components in percentage by weight: 0.5-1 percent of sodium sulfide, 20-30 percent of monopotassium phosphate, 10-15 percent of dithiocarbamate and 55-65 percent of a heavy metal adsorbent. Wherein the heavy metal adsorbent comprises lysimachia foenum-graecum and mushroom dregs. According to the heavy metal ion passivation stabilizer, the mobility of heavy metal ions in the environment can be reduced, the toxicity of the heavy metal ions to microorganisms is inhibited, the stabilizing efficiency of Cu, Zn, Cd, Pb, Hg and Ni reaches 88% or above to the minimum and the stabilizing efficiency of Cr reaches 83% or above tothe minimum after the heavy metal ion passivation stabilizer formula provided by the invention is applied to treatment of oil field measure flowback fluid treatment residues for 7 days.
Owner:PETROCHINA CO LTD
Granular soil conditioner for composite heavy metal pollution, and preparation method thereof
InactiveCN113248333AWide variety of sourcesRich reservesCalcareous fertilisersContaminated soil reclamationSoil scienceSoil remediation
The invention relates to the technical field of soil remediation, and especially relates to a granular soil conditioner for composite heavy metal pollution, and a preparation method thereof. The granular soil conditioner is prepared from, by weight, 60-70% of biomass charcoal, 0.05-0.15% of sodium selenite, 5-10% of desulfurized gypsum, 5-10% of lignite and 15-25% of wollastonite through mixing, granulating, drying and sieving with a 10-mesh sieve. The soil conditioner disclosed by the invention can be used when various crops such as wheat fields and rice are planted, can effectively passivate cadmium, lead, mercury and the like in soil, reduces the bioavailability of the soil, and also can reduce the contents of cadmium, lead and mercury in the crops. The soil conditioner disclosed by the invention is wide in raw material source and rich in reserves, and the soil conditioner prepared by utilizing the raw materials is granular, is convenient to use, can stay in soil for a long time, avoids rain wash, and improves the stability of the efficacy of the conditioner.
Owner:河南中米生态科技有限公司
Complete-element bio-organic fertilizer and preparation method thereof
InactiveCN107473903AFull of nutritionImprove fertilityExcrement fertilisersBioloigcal waste fertilisersAntibiotic YNutrient
The invention discloses a complete-element bio-organic fertilizer and a preparation method thereof, and relates to the technical field of agricultural fertilizer. The fertilizer is prepared from, by weight, 10-30 parts of tobacco straw, 30-50 parts of animal dung, 5-15 parts of tea dregs, 10-30 parts of bean straw, 0.5-1.5 parts of biological fungicides, 10-30 parts of tea shells, 10-30 parts of purple soil and 0.02-0.04 part of nitragin. The fertilizer has the advantages of being comprehensive in nutrient and capable of not only increasing organic matter and biological fungi in soil and effectively activating the soil but also taking a great recovery effect on the soil contaminated by heavy metal and antibiotics and the like, and is applicable to application in rice, vegetables, tobaccos, beans, tea leaves, oranges and other crops in the south of China, in particular to application in crops cultivated in dry soil.
Owner:HUNAN ZHONGKE AGRI
Mudflat saline-alkali land soil conditioner on the basis of using fermentation bed chicken farm wastes as raw materials and preparation method thereof and application thereof
InactiveCN109134153AImprove propertiesReduce heavy metal activityCalcareous fertilisersExcrement fertilisersAlkali soilResource utilization
The invention relates to a mudflat saline-alkali land soil conditioner on the basis of using fermentation bed chicken farm wastes as raw materials and a preparation method thereof and application thereof. The mudflat saline-alkali land soil conditioner on the basis of using the fermentation bed chicken farm wastes as the raw materials comprises the following components of 75-85 parts of fermentation bed chicken farm wastes, 5-15 parts of crop straws, 2 parts of quick lime, 1 part of gypsum and 7 parts of wormcast in parts by weight. The mudflat saline-alkali land soil conditioner on the basisof using the fermentation bed chicken farm wastes as the raw materials, provided by the invention, has the advantages that technical bottlenecks of fermentation bed chicken farm waste resource utilization and mudflat saline-alkali land soil rapid conditioning are effectively solved; by combining the fermentation bed chicken farm wastes with the crop straws and the wormcast, the formation of mudflat soil aggregates can be effectively promoted, soil salinization can be inhibited, the pH value of the soil is reduced, organic matters and nutrients N and P in the soil are increased, soil structureconditioning and fertilization of the mudflat saline-alkali land are effectively promoted, and guarantee is provided for domestic agricultural land reserve resources.
Owner:JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
Nutritional granules for blended fertilizers
InactiveCN110950713AImprove aggregate structureIncrease productionMagnesium fertilisersSolid/semi-solid fertilisersOrganic filmNutrition
The invention relates to organic-inorganic combined full-nutrition granules capable of conditioning soil or being used in blended fertilizers. The organic-inorganic combined full-nutrition granules are prepared from the following components in parts by weight, 50-60 parts of one or more of caustic calcined magnesite, a magnesium monohydrate fertilizer and brucite, 10-20 parts of attapulgite powder, 10-20 parts of humic acid powder, 3-5 parts of a boric fertilizer and 3-5 parts of a zinc fertilizer. The preparation method comprises the following steps: granulating by adopting a pinch plate extrusion or double-roller extrusion mode, carrying out circle planning treatment by using roller equipment after granulation, and adding 5-10 parts of a seaweed concentrated solution with alginic acid content of 20g / L in the circle planning process to form a layer of organic film, so that the granules are relatively round and smooth. The product can be used as a filler in blended fertilizers, can supplement medium trace elements required by crop growth, and can regulate soil.
Owner:众德肥料(烟台)有限公司
Planting method of flax in heavy-metal contaminated soil
ActiveCN102934581BNormal growth cyclePlateau Hemp YieldClimate change adaptationExcrement fertilisersFiberDisease
The invention discloses a planting method of flax in heavy-metal contaminated soil. The method comprises the following steps of: A, preparing soil and building a field, and applying passivator to reduce activity of heavy metal in the soil; B, selecting a specific flax variety with strong heavy metal contamination resistance, sowing in enough amount at proper time to guarantee full seedlings; C, rationally and closely planting, intertilling / weeding / topdressing in time to culture effective robust plants; and D, reinforcing prevention and control of diseases and insect pests, harvesting at proper time, and drying in the sun and storing appropriately. By the flax planting method, the average yields of raw stems in light, medium and heavy contaminated soil is respectively 308.2+ / -29.0, 283.2+ / -30.3 and 254.7+ / -28.6kg / mu, which reaches the high-yield level of the flax growing areas in South China; and the content of heavy metal in raw stem coarse fiber can be controlled in a range of related standard limit, so that agricultural safety and effective utilization of heavy metal contaminated soil can be realized. The method is simple in technology and practical, and has wide application prospect in broad heavy metal contaminated areas.
Owner:INST OF SUBTROPICAL AGRI CHINESE ACAD OF SCI
Preparation method of ginseng root soil microenvironment balance regulator
InactiveCN107646870APromote growthIncrease productionPlant growth regulatorsBiocideSide effectPesticide residue
The invention relates to a preparation method of a ginseng root soil microenvironment balance regulator. The method comprises the following steps: 1, producing a nano-material; 2, preparing a CuO gaseous condensate root balancing agent; 3, preparing a CO2 gaseous condensate root balancing agent; 4, preparing a ZnO gaseous condensate root balancing agent; 5, preparing a CH3 gaseous condensate rootbalancing agent; and 6, uniformly mixing 3-5 wt% of the CO2 gaseous condensate root balancing agent, 6-10 wt% of the ZnO gaseous condensate root balancing agent, 8-12 wt% of the CuO gaseous condensateroot balancing agent and 13-17 wt% of the CH3 gaseous condensate root balancing agent with water to prepare the ginseng root soil microenvironment balance regulator. The balance regulator has the advantages of no generation of non-degradable toxic organic matters methylene groups in soil, no accumulated harms to the health of human, no rise of pesticide residue accumulation in soil year by year,no soil hardening salination, regulation of the virtuous circle of the soil, no side effects or ecology destroy, safety and harmlessness.
Owner:黑龙江省牡丹江林业科学研究所 +1
Method for planting kenaf on heavy metal contaminated soil
ActiveCN102939836BStrong resistance to heavy metal pollutionNormal growth cycleHorticultureSoil-working methodsSoil heavy metalsPest control
Owner:INST OF SUBTROPICAL AGRI CHINESE ACAD OF SCI
Arsenic and cadmium compound polluted soil passivation agent and its preparation method and application method
ActiveCN110484262BAchieve adsorptionAchieve fixationOther chemical processesContaminated soil reclamationCation-exchange capacityReducing agent
Owner:ENVIRONMENT & PLANT PROTECTION INST CHINESE ACADEMY OF TROPICAL AGRI SCI
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