1384 results about "Calcium magnesium phosphate" patented technology

The invention relates to an organic environmentally-friendly soil conditioner for improving acidified or acid soil and a preparation method thereof. The soil conditioner is prepared from the following raw materials in parts by weight: 23-46 parts of biogas residue, 14-24 parts of shell powder, 16-25 parts of calcium magnesium phosphate fertilizer, 13-20 parts of plant ash, 0.1-0.2 part of chitosan, 5-7 parts of zeolite powder and 6-9 parts of bentonite. The soil conditioner is prepared through pretreatment of the biogas residue, pretreatment of the shell powder and the like; through the produced soil conditioner, the pH value of soil can be increased; nutritive elements such as calcium, magnesium, phosphorus, potassium and the like in the soil are increased; the organic matter content in the soil is increased; the water retention and fertilizer retention capacity of the soil is improved; the physicochemical property of the soil is improved; the antiretroviral (diseases, pests, drought and the like) capacity of crops is improved; heavy metal poison is reduced; and the soil conditioner is convenient to apply, is not influenced by wind power and is suitable for mechanical working.

The invention discloses a composite heavy metal polluted soil conditioner as well as application and an application method thereof. The soil conditioner comprises the following components: plant ash, calcium magnesium phosphate, quicklime, zeolite and organic fertilizers at a weight ratio of (0.3-1.1):(0.1-1.2):(0.4-2.1):(0.1-0.6):(0.008-0.06):(0.4-1.2). Through inorganic components such as quicklime, calcium magnesium phosphate and phosphate in hydroxyapatite as well as potassium carbonate in the plant ash, the soil conditioner can be used for fixing heavy metals in polluted soil and improving the fertility of the polluted soil in combination with organic manures such as the plant ash and the organic fertilizers so as to continuously intensify the restoration of the polluted soil, has the advantages of relatively-high stability, good environmental friendliness and low cost, can be used for inactivating and restoring various heavy metal polluted soil, especially has a good restoration effect on soil pollution caused by waste slag discharged by industrial and mining enterprises, can be used for realizing the treatment goal without generating secondary pollution, and is liable to realize large-area popularization.

The invention relates to a bio-organic fertilizer special for improving saline-alkali lands and a preparation method thereof. The bio-organic fertilizer is prepared from the following raw materials by weight: 5-20% of bean pulp, 64-70% of vinegar dregs, 10-25% of humic acid, 5-7% of calcium magnesium phosphate, 0.1-0.3% of zinc sulfate, 0.1-0.2% of borax and 0.05-0.1% of compound microbial strains. The preparation method of the bio-organic fertilizer comprises the steps of compound microorganism selecting, activating, primary expanding, secondary expanding and expanding by tabling, material mixing, fermenting, turning, finished product preparing, low-temperature drying, detecting and measuring and packaging. The organic matters and the humus in the bio-organic fertilizer can adsorb the free ions fixed in the soil of the saline-alkali lands, reduce the solution concentration of the soil and neutralize the alkali in the soil of the saline-alkali lands, thus alleviating or eliminating the saline-alkali harms, and simultaneously release the potassium ions and increase the contents of the organic phosphorus and the inorganic phosphorus, thus improving the effectiveness of the fertilizer.

The invention discloses a soil heavy metal composite passivator with humic acid minerals and a preparation method thereof. The soil heavy metal composite passivator is prepared by humic acid mineral powder, fused calcium magnesium phosphate and quick lime according to a certain proportion. The preparation method comprises the following steps: A, preparing the humic acid mineral powder: taking humic acid raw ore, carrying out ball-milling to the humic acid raw ore, and sieving the humic acid raw ore by a 110-140-mesh sieve for standby; and B, uniformly mixing the raw material prepared in the step A, fused calcium magnesium phosphate and quick lime, adjusting the water content of the mixture to be 10% counting by H2O, and stacking the mixture for five-seven days to obtain the soil heavy metal composite passivator with the humic acid minerals, so that the operation is simple and the method is easy to implement. By the invention, the available cadmium content of red sand mud soil with thefull-cadmium content of 10mg/kg (by exogenous adding) is reduced by 0.36-2.25mg/kg within ninety-day culture time, the reduction amplitude reaches up to 4.7-25.7%, the efficiency of the soil heavy metal composite passivator with the humic acid minerals under a water condition of 45% WHC (Water-holding Capacity) is better than that under a flooded condition, and the soil heavy metal composite passivator with the humic acid minerals also has the functions of passivating heavy metal in soil, soil fertility and the like and has significant popularization and application values in vast heavy metalpollution regions.

The invention discloses a compound fertilizer capable of reducing cadmium content in rice with overproof cadmium and a preparation method thereof. The fertilizer is prepared from urea, ammonium chloride, ammonium sulfate, diammonium phosphate, nitrophoska, a calcium magnesium phosphate fertilizer, potassium chloride, zinc sulfate, sepiolite, ferrimganic oxide, kaolin, bentonite and power plant slags in a certain proportion. The preparation method comprises the following steps: A, preparing the sepiolite; B, preparing the ferrimganic oxide; C, preparing the kaolin; D, preparing the bentonite; and E, preparing the power plant slags. In addition, scale production is carried out by a compound fertilizer process flow namely extrusion and granulation. The compound fertilizer is characterized in that 38.5-50.5% of passivator such as sepiolite, ferrimganic oxide, calcium magnesium phosphate fertilizer, kaolin, bentonite, power plant slags and the like (wherein the sepiolite accounts for 20-32.5%) are contained; the content of the total nutrition (N+P2O5+K2O) is 25%, the soil activated cadmium in the rice with the overproof cadmium is reduced by 31.9-58.5%, rice cadmium is reduced by 28.7-51.7% (the content is less than 0.2mg/kg); and the compound fertilizer has huge popularization and application value in light-grade cadmium-polluted areas.

The invention relates to a passivator for remediation of farmland soil subjected to combined pollution of heavy metals such as cadmium, chromium, copper and nickel, and a preparation method and a use method of the passivator. The passivator is prepared from a passivator A and a passivator B, wherein the passivator A is prepared from montmorillonite, kieselguhr, sepiolite, illite and ferrous sulfate; the passivator B is prepared from periclase, calcite, calcium magnesium phosphate fertilizer, plant ash and calcium hydroxide; the passivator is suitable for the farmland soil subjected to the combined pollution of the cadmium, the chromium, the copper and the nickel, and is prepared from the multiple different porous absorption materials with specific contents and a passivation material; the components of the passivator have complementary advantages, and the principles such as absorption and stabilization are combined; the combination forms of the heavy metals are effectively enhanced by ion exchange, complexing, chelating and adsorption methods, and the combination forms are converted into more stable strong organic binding states and residue states, so that the effective state contents of the heavy metals in the farmland soil are effectively reduced, and the passivation effect is long-acting and stable; therefore, the passivator has a great repair effect for the farmland soil subjected to combined pollution of the cadmium, the chromium, the copper and the nickel.

The invention provides a controlled-release and slow-release compound fertilizer specialized for kiwi fruit, and belongs to the technical field of fertilizers. The compound fertilizer comprises 8-9 parts of urea, 16-18 parts of calcium magnesium phosphate fertilizer, 1 part of potassium sulfate, 3.5-4.5 parts of potassium chloride, 60-70 parts of fermented chicken manure fertilizer, 7-9 parts of charcoal powder, 1.8-2.2 parts of calcium superphosphate, 0.8-1.2 parts of bentonite, 1 part of a solid inoculant, and 0.1 part of boric acid. The compound fertilizer provided by the invention has the beneficial effects that urea, the calcium magnesium phosphate fertilizer, potassium sulfate and potassium chloride are prepared according to the proportions, the demand of the kiwi fruit plants on nitrogen, phosphorous and potassium is satisfied, and needed secondary elements such as calcium, magnesium, chlorine, sulfur and boron are guaranteed at the same time; besides, large amounts of organic substances are supplied to the kiwi fruit by large amounts of the fermented chicken manure fertilizer; and moreover, needed trace elements such as ferric, copper, sodium, zinc, cobalt and the like are contained in the compound fertilizer, so the elements necessary for the kiwi fruit are basically completed.

The invention relates to a farmland heavy metal contaminated soil compound modifying agent and a preparation method and an application method thereof. The farmland heavy metal contaminated soil compound modifying agent comprises, by weight, 20-40% of activated decomposed coal, 15-25% of charcoal, 10-25% of sepiolite, 10-20% of calcium magnesium phosphate fertilizer and 10-20% of diammonium phosphate, wherein the activated decomposed coal is obtained by activating ammonium bicarbonate and ultrasonic waves, and the sepiolite is obtained by pyrolysis at the temperature of 600-800 DEG C. The farmland heavy metal contaminated soil compound modifying agent is low in cost and simple in formula and mainly used for passivating heavy metal of Cd, Cu, Pb and Zn in soil, the soil polluted by the heavy metal can be effectively repaired, the sustainable production capacity of the soil can be ensured, and the sustainable soil utilization is achieved.

The invention discloses a propagation method of camellia amplexicaulis cohen stuart by using shoot cutting. The propagation method comprises the steps of: firstly, transplanting mother seedlings which are cultured through seedling culturing and are taken as cutting mother seedlings into a garden using composted organic fertilizers and calcium magnesium phosphate fertilizers as base fertilizers, and culturing, wherein the plant spacing between the two adjacent rows is 25cm*30cm; performing cutting back and sprouting promoting at a position where a mother plant base parts is 10-15cm away from the ground, collecting cutting woods with branch lengths of 5-8cm, and cutting in a cutting bed provided with a cutting substrate; and controlling illumination, relative humidity and substrate water content in the cutting bed to obtain a cutting seedling of the camellia amplexicaulis cohen stuart. According to the propagation method, the garden for culturing the mother seedlings, an exposed plot isselected for ridging and close planting, the mother seedlings are developed in root systems, are high in growth speed and are also high in growth speed of branches sprouting, a rejuvenating effect oflow-level trunk cutting is good, cutting woods are easy to root and are shorter than branches in the common shoot cutting, and thus a collecting interval of the cutting woods can be shortened, the propagation efficiency is improved, and 5-6 times of cutting propagation can be carried out one year, so that a large quantity of seedlings are obtained; and the propagation method has the advantages ofbeing low in production cost, relatively small in material consumption, simples in operation, large in supply quality of the cutting woods, and relatively good in economic benefit.

The invention discloses a passivator for repairing a compound heavy metal polluted farmland. The passivator comprises the following components in parts by weight: 15-25 parts of rock-type mineral particles, 8-15 parts of nano-iron, 5-15 parts of a calcium magnesium phosphate fertilizer, 25-40 parts of coal ash, 15-25 parts of biochar and 10-15 parts of red mud. The passivator for repairing the compound heavy metal polluted farmland disclosed by the invention can effectively reduce the plant effectiveness of heavy metals lead, arsenic, cadmium and chromium in soil, and meanwhile, the soil nutrients are improved and the physical and chemical properties of the soil are maintained.

A special compound fertilizer for sugarcane. The compound fertilizer is divided into two kinds of fertilizers: base fertilizer compound fertilizer and topdressing compound fertilizer according to the different requirements for fertilizers in different stages of sugarcane growth. The formula of the base fertilizer is N-P2O5 according to the mass ratio -K2O-ZnO: 10-10-8-0.5, the base fertilizer compound fertilizer contains several components such as urea, calcium magnesium phosphate fertilizer, potassium sulfate, zinc sulfate and filler; the top dressing formula is N-P2O5-K2O: 18- 6-4. The compound fertilizer for topdressing contains urea, general calcium, potassium sulfate and fillers; tests show that the present invention can effectively increase the yield per unit area of ​​sugarcane by 0.5-1.0 tons and increase the sugar content of sugarcane by 0.5-1.0 percentage points. Improve the utilization rate of chemical fertilizers by 3 to 5 percentage points. This technology is more suitable for the application on the acidic soil in the tropical and subtropical sugarcane areas in southern my country; when the sugarcane is newly planted or the perennial root pine pocket is applied to the sugarcane at a rate of 40-60kg per mu In the ditch, cover the soil after fertilization; the topdressing compound fertilizer is applied at 60-80kg per mu per mu during the sugarcane growth period, and then 20-40kg of urea is added once.

The invention discloses a composite fertilizer comprising chitin, humic acid, and middle and trace elements. The fertilizer is prepared from the raw materials of 1 part of chitin, 0.5 parts of chitosanoligosaccharide, 250 parts of urea, 450 parts of monoammonium phosphate, 100 parts of potassium chloride, 50 parts of sodium humate, 100 parts of bentonite, 10 parts of calcium-magnesium-phosphate fertilizer, 6 parts of zinc sulfate, 6 parts of borax, 4 parts of ammonium molybdate, 4 parts of manganese sulfate, 10 parts of ferrous sulfate, and 10 parts of magnesium sulfate. The fertilizer provided by the invention has the advantages that: the fertilizer has rich nutrient element; chitin, humic acid, and middle and trace elements are blended, such that the utilization rate of middle and trace elements is improved; and functions of cropping resistance, nematode control, crop disease reduction, soil improvement, crop quality improvement, high crop yield improvement are provided.

The invention relates to a soil-acidification-resistant organic fertilizer additive and a preparation method thereof. The additive is prepared through the steps of mainly using zeolite powder, low-grade calcium magnesium phosphate fertilizer, waste resource shells, calcium silicon powder and humic acid powder as raw materials, mixing, fermenting, curing, drying, crushing and scientifically combining and mixing with spray-dried embedded functional composite microbial agent microcapsules. After organic fertilizers added with the additive are applied into acid/acidified soil, the physical fertility, the biological fertility and the chemical fertility of the soil can be improved and the acid resistance of the soil is improved. The additive and the fertilizer with the additive are safe, effective and highly functional. The application of the additive removes the threat of acid/acidified soil to the agricultural production, the ecological environment and the human health from the angle of nutritionists of a food chain.

The invention discloses a dedicated fertilizer for tobacco, and relates to a fertilizer. The dedicated fertilizer comprises the following raw materials: 100 kg of ammonium sulfate, 31 kg of urea, 200 kg of nitric phosphate, 89 kg of di-ammonium phosphate, 100 kg of calcium superphosphate, 10 kg of calcium magnesium phosphate fertilizer, 230 kg of potassium sulfate, 15 kg of borax, 21 kg of amino acid chelated zinc, manganese, copper, iron and tombarthite, 100 kg of nitrohumic acid, 40 kg of magnesium sulfate heptahydrate, 28 kg of a biological agent, 11 kg of a synergistic agent and 28 kg of a soil conditioner. Compared with the prior art, the dedicated fertilizer has the advantages that tobacco yield can be improved by 36 percent; the agronomic character and quality can be improved; the tobacco growing period can be shortened; the environment can be protected; the plant stress resistance can be improved; the prospects in improving economic benefits of tobacco growers and the like are wide; the smoking health of a human body is guaranteed.

The invention provides a method for producing an organic fertilizer from plant straws by aerobic fermentation. According to the method, the plant straws are used as a major material and appropriate portions of edible fungi residue, seed cake, calcium magnesium phosphate and cellulose decomposition bacteria are added to carry out aerobic fermentation of the mixed compost. By applying modern high-temperature aerobic fermentation of the compost, the method comprises the procedures of pre-treatment of raw materials, high-temperature aerobic fermentation, aging, pulverizing, granulating, drying and screening. The method employs a way of fermentation that is different from the traditional process, specifically, high-temperature aerobic fermentation of the compost, to produce the organic fertilizer.

The invention relates to the field of soil fertilizer and provides a biological organic repairing agent for soil pollution and its application and preparation method. The biological organic repairing agent of the invention is composed of, by weight, 1.5-3 parts of eymogenic bacterium, 1-1.5 parts of wheat bran, 1.5-2 parts of molasses meal, 45-50 parts of ammonium humate, 45-50 parts of hydrolase dregs, 150-200 parts of soybean meal, 100-150 parts of humic acid powder, 80-100 parts of zeolite powder, 25-40 parts of a calcium magnesium phosphate fertilizer, 150-200 parts of cattle and sheep manure, 150-204 parts of plant straw, 25-40 parts of potassium humate, 1.5-3 parts of bacillus mucilaginosus, 1-1.5 parts of Gliocladium roseum, 1.5-2 parts of Streptomycesvinaceus-drappus, 1-1.5 parts of trichoderma spp, 1-1.5 parts of Paecilomyces lilacinus, 1-1.5 parts of bacillus subtilis and 1-1.5 parts of micrococcus. According to the invention, soil pollution control, improvement and nutrition are integrated.

The invention relates to a balling method using medium- and low-grade phosphate rocks or ground phosphate rocks. The method comprises the following steps: S1, preparing materials, namely A, 85-100 parts of 60-120-mesh medium-grade and low-grade phosphate rocks or ground phosphate rocks, B, 1-10 parts of water or aqueous liquor of phosphoric acid, C, 2-8 parts of coke powder with the granularity of 60-120 meshes and D, 1-8 parts of one or more of phosphate fire clay, kaolin, sodium silicate, sodium carbonate, calcium carbonate and serpentine; S2, stirring, namely after uniformly mixing the raw materials, pressing the mixture into balls by use of a dry powder ball press machine, after pre-drying, delivering the mixture to a vertical calcining kiln, using purified yellow phosphorus tail gas, heating to 850-950 DEG C; starting roasting to obtain a finished product. The method is free from binders and low in cost, and the medium-grade and low-grade phosphate rocks are not hardened. The value of the medium-grade and low-grade phosphate rocks can be improved, and the ground phosphate rock of a mine can be fully utilized. The phosphate rock balls prepared are suitable for production of yellow phosphorus or calcium magnesium phosphate fertilizers.

The invention discloses an efficient multi-element compound fertilizer, which consists of hexanoic acid 2-(diethylamino) ethyl ester, polypeptide chelated potassium, polypeptide L-aspartate potassium, urea, potassium chloride, diammonium phosphate, calcium superphosphate, potassium dihydrogen phosphate, calcium-magnesium phosphate fertilizer, ammonium chloride, thiamine, zinc chloride, borax, ferrous sulphate, copper sulphate, manganese sulfate, sodium molybdate, cobalt chloride and silicon-manganese phosphate fertilizer. The efficient multi-element compound fertilizer has the advantages of promoting the growth of crops, improving the disease resistance of the crops, resisting falling, insect pests and frozen injury, improving the fertilizer effect, improving the soil, accelerating the growth of branches and leaves, reinforcing the photosynthesis, accelerating the growth of roots, enhancing the drought resistant capacity, improving the yield of the crops and improving the quality of fruits. The yield of grain crops is averagely increased by more than 26 percent, the yield of economic crops is averagely increased by more than 33 percent, and the yield of vegetable crops is averagely increased by more than 42 percent.

The invention discloses a composite soil remediation agent made from compost and a preparation method. Vigorous implementation of soil remediation is a primary task for protecting soil ecological environments and solving land resource scarcity. The composite soil remediation agent made from the compost comprises, by weight, 60-70 parts of compost materials, 10-15 parts of straw biomass charcoal, 20 parts of coal ash, 2-5 parts of zeolite powder, 3-5 parts of calcium magnesium phosphate fertilizer, 0.5-2 parts of composite microbial agents and 0.5-1 part of binder. The composite soil remediation agent and the preparation method have the advantages that the substances are combined organically, formula and production process are optimized reasonably, the composite soil remediation agent with functions of fertilizing, purifying and remediating the soil and promoting crop growth and development is provided for soil remediation, and accordingly, healthy, green and sustainable agriculture is promoted. The composite soil remediation agent is applied to soil remediation as well as biofertilizer and waste resource utilization.

The invention discloses a rapid long-acting humic acid multivariate fertilizer and a production method thereof. A long-acting part of the rapid long-acting humic acid multivariate fertilizer comprises raw materials of, by weight, 15-20% of urea, 5-10% of ammonium sulfate, 5-10% of ammonium chloride, 5-15% of monoammonium phosphate, 8-15% of calcium magnesium phosphate, 10-20% of potassium chloride or potassium sulfate, 10-15% of waste residues left from iron selection of pyrite smelting slag, 25-50% of humic acid, 5-25% of phosphogypsum and 5-12% of dolomite powder; A rapid part comprises rawmaterials of, by weight, humic acid urea prepared from 20-30% of urea and 40-50% of instant humic acid, 5-15% of monoammonium phosphate, 10-20% of potassium chloride or potassium sulfate, 0.5-1% of borax, 1-3% of zinc sulfate, 2-5% of magnesium sulfate, 0.2-1% of copper sulfate and 0.01-0.05% of ammonium molybdate.

The invention relates to a mushroom cultivation substrate, which consists of solid materials and water. The mushroom cultivation substrate is characterized in that the solid materials comprise by weight 78-82% of broad-leaf tree sawdust, 14-20% of wheat bran, 0.8-1.2% of sucrose, 0.7-1.2% of gypsum powder, 0.8-1.5% of fused calcium-magnesium phosphate fertilizer, and 0.8-1.5% of a compound fertilizer, and that water in the mushroom cultivation substrate accounts for 58-62% of the total weight of the solid materials. According to the mushroom cultivation substrate, fused calcium-magnesium phosphate fertilizer and the compound fertilizer serving as mushroom heavy metal modifying agents are added in the conventional cultivation substrate of the mushroom, the addition amount of fused calcium-magnesium phosphate fertilizer and the compound fertilizer is within the range of 0.8-1.5%, so that the cadmium content in the mushroom is reduced by 18-39.6%, and the mercury content is reduced by 19.9-29%; moreover, the accumulation function of the heavy metals can be reduced to the largest degree, and the adverse effects on important agronomic characteristics such as mycelium spreading speed, yields and the like are avoided.

The invention discloses a specialized biological compound fertilizer for grape. A first formula is that a total amount of nitrogen phosphor and potassium is 30% with a ratio of 1: 0.8 : 1.2; and the proportion (by weight) of each raw material is as follows: 62.8 parts of fresh semi-dried chicken manure, 0.2 part of a calcium magnesium phosphate fertilizer, 23.8 parts of potassium fulvic acid, 2 parts of borax, 1 part of copper sulfate pentahydrate, 1 part of zinc sulfate heptahydrate, 1 part of ferrous sulfate heptahydrate, 3.2 parts of amino acids, 2 parts of microbial agents, 1 part of a synergist and 2 parts of a conditioner. A second formula is that a total amount of nitrogen phosphor and potassium is 25% with a ratio of 1: 0.8 : 1.38; and the proportion (by weight) of each raw material is as follows: 76 parts of fresh semi-dried chicken manure, 4 parts of potassium sulphate, 2 parts of amino acid chelated (complexed) zinc, boron, copper and ferrum, 8.5 parts of nitrohumate,3.5 parts of amino acids, 3 parts of a microbial preparation, 1 part of a synergist and 2 parts of a conditioner. A product is obtained by stirring the above materials uniformly, spray granulating, and drying at a low temperature or air drying.

The invention belongs to the field of chemical production, and relates to an activated calcium magnesium phosphate fertilizer and a preparation method thereof. The activated calcium magnesium phosphate fertilizer is prepared from a calcium magnesium phosphate fertilizer and an organic activating agent. The organic activating agent is one or a mixture of more of lignin, acid lignin, sodium lignin, alcohol waste liquor, monosodium waste liquor, monosodium waste sludge, acid sludge, furfural sludge, beer filter mud, sugar-refinery filter mud and weathered coal. The activated calcium magnesium phosphate fertilizer is prepared by adding the organic activating agent into the calcium magnesium phosphate fertilizer according to a specified ratio, and grinding, placing and drying the mixture. Phosphorus in the activated calcium magnesium phosphate fertilizer is in an activated state, the activated calcium magnesium phosphate fertilizer can be fast and stably released when applied to the soil, can reduce fixation of the soil, and has fast and durable fertilizer effect, so that the utilization rate of the phosphorus is obviously improved. Meanwhile, the activated calcium magnesium phosphate fertilizer has the advantages of simple production process, low production cost, high and stable yield, and contribution to large-scale production and application. Compound fertilizer plants or newly-built phosphate fertilizer plants can produce the activated calcium magnesium phosphate fertilizer under the conditions of small equipment investment.