45results about "Organic fertilisers" patented technology

The invention discloses a remediation material and a remediation method for heavy metal contaminated soil, and belongs to the technical field of soil remediation. The remediation material comprises, by weight, 20-60 parts of modified clay minerals, 30-60 parts of calcium-magnesium based composite materials and 5-10 parts of magnesium oxides. The remediation material and the remediation method havethe advantages that the natural minerals serve as main bodies of the repairing material, free heavy metal ions can be adsorbed through reactions, the remediation material is not easy to dissolve in water, heavy metals are prevented from being absorbed by root systems of crops and animals, and the pollution risks of the water and soil environment are greatly reduced; the remediation material is low in cost, green, natural, and free of secondary pollution.

The invention provides a soil solidifying material used for over-wet soil and a use method thereof, relating to a soil solidifying material and a use method thereof, aiming at providing the soil solidifying material used for over-wet soil with good reinforced effect and strong solidifying soil water stability and the use method thereof. The technical scheme of the invention is as follows: the soil solidifying material used for over-wet soil comprises the following components in parts by weight calculated by supposing that the over-wet soil needs to be treated is 100 parts by weight: 1-8 parts of soil solidifying agent, 1-10 parts of lime, 0-8 parts of cement and 0-20 parts of coal ash. The use method comprises the following steps: grinding and levelling the soil, evenly spreading the soil solidifying material on the soil; grinding, blending and laminating the soil solidifying material and the over-wet soil together; carrying out material enclosing on the soil layer which is initially laminated for 24-28 hours; and evenly spreading the soil solidifying material on the soil layer again, then stirring, grinding and compacting. The invention is mainly used for the treatment of over-wet soil.

The invention discloses a soil remediation agent used for heavy metal pollution and a preparation method thereof. The agent is prepared from, by weight, 45-64 parts of clay mineral, 24-33 parts of straw, 10-14 parts of chitosan, 5-8 parts of alfalfa, 6-9 parts of poly-diallyldimethylammonium chloride, 8-15 parts of water-soluble polyvinyl alcohol, 1.5-3 parts of guar gum, 4-6 parts of sodium carbonate, 5-10 parts of metal oxide and 2-5 parts of sodium humate. The sources of raw materials are diversified, and under the synergistic effect of each raw material, a finished product prepared according to the method can achieve a great function of removing mercury, chrome, lead and other heavy metal ions in the soil through flocculation, adsorption and other means without causing soil hardening and has a wide application prospect.

The invention discloses a method for producing safe agricultural product on organic contaminated soil. The following steps are included: 1) a surfactant is added into water, heated and stirred to be dissolved to obtain a surfactant solution with the concentration of 500-6000 mg/L, which is prepared to be used until being cooled down to the room temperature; 2) the prepared surfactant solution is added directly into the organic contaminated soil by 50-600 mg/kg which is calculated based on the dry soil weight; 3) the crop is planted on the soil. The invention is easy to operate, economical and practical, and has distinct effect; the agricultural products produced by the method contain obviously decreased organic contaminants. The invention is applicable to the production of safe agricultural products on the organic contaminated soil.

The present invention is a method of producing a (meth)acrylic acid based water-soluble polymer having a content of groups in neutralized state of not more than 90 mole percent, where the sum total of acid groups and groups in neutralized state contained in the (meth)acrylic acid based water-soluble polymer is taken as 100 mole percent, which comprises a photopolymerization step of polymerizing a monomer component by irradiating near-ultraviolet rays to a reaction mixture, the said reaction mixture comprising the monomer component, a photopolymerization initiator, a chain transfer agent and a polymerization solvent, the said monomer component containing not less than 50 mole percent of a (meth)acrylic acid monomer, with the whole monomer component subjected to polymerization being taken as 100 mole percent, and a concentration of the said monomer component in the reaction mixture at the time of polymerization being 40 to 97% by mass.

The invention discloses a cultivation method for promoting high yield and stable yield of tartary buckwheat, belonging to the technical field of crop cultivation. The specific steps involved in the technology include: selection of plots, land preparation, seed treatment, seed sowing, field management and harvesting processing. The invention standardizes and refines the planting technology of tartary buckwheat, which is conducive to exploiting the tartary buckwheat development scale and market prospect; the beneficial effects of the cultivation method for promoting high yield and stable yield of tartary buckwheat comprise that the characteristics of its cultivation techniques are mainly organic fertilizers in farms, supplemented by inorganic chemical fertilizers. The soaking method is mainly immersed in warm water, supplemented with ammonium molybdate solution and gibberellin water, which can promote the growth and development of tartary buckwheat seeds with scientific and reasonable technology, increase production as well as farmers' income.

The invention discloses methods for producing fulvic acid salt, fulvic acid salt water-soluble fertilizers and aquatic nutrient solution from alcohol waste liquid from waste molasses. The method for producing the fulvic acid salt from the alcohol waste liquid from the waste molasses includes steps of 1), carrying out acidification reaction, to be more specific, adding the alcohol waste liquid from the waste molasses into sulfuric acid solution with the concentration of 30-55%, carrying out stirring acidification reaction, then adding potassium salt into first reaction products, dissolving the potassium salt and continuously stirring the potassium salt and the first reaction products until reaction is completely carried out to obtain products with fulvic acid; 2), carrying out salt forming reaction, to be more specific, adding prepared alkaline solution into the products, obtained at the step 1), with the fulvic acid, carrying out stirring reaction until the products are alkalized and salt is formed, and then cooling the salt until the temperature of the salt reaches the room temperature so as to obtain the fulvic acid salt. The fulvic acid salt water-soluble fertilizers and the aquatic nutrient solution further can be obtained from the fulvic acid salt. The methods have the advantages that the problems of pollution on natural environments and disruption of ecological balance due to discharge of waste liquid obtained after alcohol is produced from existing waste molasses can be solved by the aid of the methods, and excellent economic benefits further can be created.

The invention discloses an efficient total-nutrient chelate fertilizer and a preparation method of the efficient total-nutrient chelate fertilizer, and belongs to the technical field of crop fertilizers. The efficient total-nutrient chelate fertilizer is prepared from the following raw materials by weight: 650-750 parts of urea, 800-100 parts of monopotassium phosphate, 80-120 parts of potassium humate, 75-85 parts of calcium chloride, 55-65 parts of magnesium sulfate, 18-22 parts of ferrous sulfate, 20-25 parts of manganese sulfate, 20-25 parts of copper sulfate, 20-25 parts of zinc sulfate,2-4 parts of ammonium molybdate, 40-60 parts of citric acid, 50-60 parts of tartaric acid, 90-110 parts of EDTA, 35-45 parts of boric acid, 15-20 parts of lanthanum nitrate, 25-30 parts of cerous nitrate, and 30-40 parts of a surfactant. The monopotassium phosphate, the compound trace element and the rare earth element chelate are compounded, the trace element and the rare earth element exist in the non-precipitate inorganic form, and the defect that the traditional micro element fertilizer cannot be compounded with the phosphate is overcome.

The invention relates to the field of soil restoration, especially relates to the field of restoration of soil polluted by heavy metals, and particularly relates to a passivation agent for cadmium polluted alkalescent soil and a restoration method. The passivation agent is prepared from montmorillonoid and cow dung. The dosage of the passivation agent is 16%. The passivation agent formed through combination of montmorillonoid and cow dung can remarkably reduce the concentration of effective state Cd in the polluted farmland soil. Meanwhile, a test proves that the passivation agent formed through combination of montmorillonoid and cow dung has a better passivation restoration effect compared with independent application of cow dung or montmorillonoid, and the passivation rate is obviously higher than the sum of the passivation rates of montmorillonoid and cow dung. When the application rate of the passivation agent is 16%, the passivation rate can be as high as 81.48%. Therefore, the passivation agent provides a more effective new route for restoration of the alkalescent farmland soil polluted by the heavy metals.

The invention discloses a selenium-rich rice planting technology. The selenium-rich rice planting technology comprises the following steps of land preparation, seed treatment, sowing, rice seedling raising, rice transplanting, fertilization, field management and harvesting, wherein the implementation mode of the land preparation is to select a land with sufficient water resources and fertile soiland away from serious pollution as a planting rice field; the implementation mode of the seed treatment is that seeds are soaked in a selenium-rich nutrient solution, then taken out and washed up, subjected to ultraviolet sterilization and soaked with clear water for pregermination. The selenium-rich rice planting technology has the advantages that the design is reasonable, the double selenium supplement effects of selenium-rich rice are achieved by soaking the seeds in the selenium-rich solution and applying selenium-rich fertilizers on growing rice seedlings, the selenium content in the riceis greatly improved, the difficulty that selenium elements are difficult to absorb completely in a selenium-rich rice technology in the prior art is overcome, and the selenium-rich rice planting technology is worth popularizing and using in the field of rice planting.

The invention discloses composition for reductive soil sterilization and an application of the composition. The composition comprises a cellulose degradation compound microbial agent formed by flavobacterium johnsoniae and pseudomonas fluorescens and further comprises corn stalk. The composition can change the microflora structure of soil and promote the corn stalk to degrade in the anaerobic environment to produce ammonia, methane, organic acid, hydrogen sulfide and other substances which have poisonous effects on fusarium oxysporum. By means of the composition, 99.9% of fusarium oxysporum can be killed, and 97.0% of pathogenic bacteria can still be killed in the dry period. Besides, the composition can notably improve the physical and chemical properties of soil, can effectively relievesecondary salinization of the soil, further can be used for controlling tomato wilt and has an improvement effect.

The invention discloses an artificial cultivation method for increasing melastoma dodecandrum fruit yield. The method includes steps: (1) land selection and preparation; (2) seedling cultivation; (3)transplanting; (4) field management including management in fertilization, watering and freeze and cold protection; (5) fruit harvesting. The artificial cultivation method for increasing melastoma dodecandrum fruit yield has advantages that by means of cutting seedling cultivation, the survival rate of cultivated melastoma dodecandrum is high, melastoma dodecandrum fruit yield can be increased while quality is improved, and sufficient raw material sources can be provided for further comprehensive utilization of melastoma dodecandrum fruits. By adding of cold-proof antifreeze agents, quality ofagricultural products is improved, resistance to drought, cold and diseases of crops can be improved, and accumulation and residues of farm chemicals and chemical fertilizers are evidently reduced.

The invention discloses a soil improver and a preparation method thereof. The soil improver is prepared from, by mass, 10-25 parts of calcium hydroxide, 3-6 parts of ammonium sulfate, 2-3 parts of bamboo vinegar, 2-3 parts of natural base, 1-3 parts of spirulina, 10-15 parts of peat soil, 30-50 parts of limestone, 30-50 parts of excrement, 15-25 parts of powdered rock phosphate and 10-15 parts of bamboo charcoal. The raw materials are easy to obtain, and the phenomenon of soil depletion can be effectively relieved, so that soil is recovered to the original vitality.

The invention discloses a method for preparing kitchen waste fertilizer by utilizing photovoltaic electric energy to treat kitchen waste. The method comprises the following preparation steps: 1) performing pretreatment on the kitchen waste; 2) adding the kitchen waste into a processor, and adding a moisture absorption regulating agent; and controlling the overall water content at 55-60%; 3) performing heating and heat preservation on the kitchen waste in the processor by utilizing the photovoltaic electric energy; 4) continuously introducing air by utilizing the photovoltaic electric energy; and 5) performing continuous fermentation for at least 10 days. Compared with the prior art, the method provided by the invention can obtain the organic fertilizer through harmless aerobic fermentationtreatment of the collected kitchen waste; in the fermentation process, the electric energy generated by a photovoltaic module is used, the kitchen waste is pulverized, ventilation and heat are provided, ultraviolet light energy is provided in the process of waste-gas recovery treatment, the photovoltaic electric energy is adopted in the whole fermentation process, so that the method is clean andenvironmentally friendly; and the method realizes the purpose of breaking up the whole composting treatment manner into parts, and facilitates treatment and classification of the organic kitchen waste.

The invention belongs to the field of soil water-retaining agents, and particularly relates to a soil drought-resisting water-retaining agent, and a preparation method and using method thereof. The soil drought-resisting water-retaining agent is prepared from the following raw material components in parts by weight: 80-120 parts of polyaspartic acid, 10-20 parts of bentonite, 10-20 parts of kieselguhr, 5-10 parts of humic acid, 20-40 parts of dry plant powder, 3-10 parts of an initiator, 3-10 parts of a crosslinking agent, and 0-0.3 part of an additive. The dry plant powder is prepared according to the following method which comprises the steps that potatoes are sliced and dried, and dry potato slices are obtained; fruit waste is dried, and thus dry fruits are obtained; the dry potato slices and the dry fruits are mixed and then crushed, and the dry plant powder is obtained. The additive is an EM bacteria or nanometer titania. The soil drought-resisting water-retaining agent adopts environment-friendly raw materials, the soil structure can be improved, water can be absorbed during irrigation, and the water can be released to be absorbed and utilized by plants during drying.

The present invention relates to a treatment system for waste and filtrate in a composting plant The system solves the problems in the prior art that waste treatment equipment is incapable of treating the waste very well or treating the filtrate of the waste, and that composting and fermentation are performed independently and therefore a delivery operation is required. The system comprises a plurality of treatment tanks; a partition board is provided in the treatment tank; the partition board divides the process tank into a composting unit and a filtrate ventilation chamber; a plurality of filtrate holes are provided on the partition board; a plurality of temperature balance tubes and a filter basket layer are disposed on the partition board; one end of the filtrate ventilation chamber is provided with a filtrate outlet; the filtrate outlet is connected to a filtrate treatment mechanism; and the other end of the filtrate ventilation chamber is connected with a ventilator. The system also comprises a composting turning machine, the composting turning machine is disposed on a movable bracket. The present invention has the advantage of performing the composting process and the fermentation process in the treatment tank with no need to move the waste. Waste filtering and aerating can also be performed in the treatment tank. The system has the filtrate treatment mechanism that can treat the filtrate very well.