154results about "Magnesium double phosphate fertilisers" patented technology

A method and apparatus in which in a biological treating system for organic wastewater, not only is phosphorus, etc. efficiently recovered as MAP crystal from a wastewater containing organic matter, phosphorus and nitrogen but also the biological denitrification/dephosphorization treatment capability is strikingly improved. There is provided a method of treating sludge generated in the process for biological treatment of organic wastewater utilizing microbial metabolism, characterized in that a biological treatment composed mainly of acid fermentation by facultative anaerobes is carried out with the sludge to thereby leach phosphate ion and ammonium ion from the sludge; a magnesium source is added to the sludge to thereby form grains of magnesium ammonium phosphate from the leached phosphate ion and ammonium ion; and grains of magnesium ammonium phosphate are separated from the sludge containing formed grains of magnesium ammonium phosphate. Further, there is provided an apparatus for carrying out the method.

An attrition resistant fertilizer spike composition, exhibiting a mechanical strength which allows the spike to be hammered unsupported into the soil without suffering damage, to provide an effective source of slow releasing plant nutrients to the soil. The composition comprises between 93 and 98 percent of particulate plant nutrient compounds containing one phosphate ion chemically combined with one divalent cation and one monovalent cation, including the compounds magnesium ammonium phosphate and magnesium potassium phosphate. The composition includes a coating of between 2 and 7 percent of thermoplastic adhesive with a softening temperature between 65 and 160 DEG C. on the particles. The coated particles are formed into an attrition and shatter resistant spike shape, suitable for hammering into the soil, by pressing into a die at a temperature higher than the softening temperature of the thermoplastic adhesive and then cooling to a temperature lower than the softening temperature. A method of preparing these improved spikes is provided. In the method the thermoplastic adhesive is applied as an aqueous dispersion or emulsion along with a die lubricant prior to pressing the coated particles into a spike exhibiting a high degree of physical integrity.

The invention provides agricultural organic fertilizer which is prepared from the following raw materials in parts by weight: 20-25 parts of crop straw, 10-15 parts of animal waste, 5-10 parts of humic acid, 5-8 parts of dipotassium phosphate, 5-8 parts of corncob, 4-6 parts of peanut shell, 4-5 parts of urea, 4-5 parts of calcium superphosphate, 4-5 parts of light rare earth, 4-5 parts of zymophyte, 2-4 parts of magnesium phosphate, 1-2 parts of sodium molybdate, 1-2 parts of compound sodium nitrophenolate, 0.5-1 part of microelement additive, 0.5-1 part of synergist, 0.5-1 part of conditioning agent, 0.5-1 part of antiviral agent and 0.5-1 part of soil improving functional flora. The agricultural organic fertilizer provided by the invention has the advantages of sufficient nutrition and high uniformity and high stability of fertilizer efficiency and does not pollute environment to realize high environmental protection performance; moreover, by adding the soil improving functional flora into the raw materials of the agricultural organic fertilizer, the soil structure can be effectively improved, thus, the fertilizer efficiency of the organic fertilizer can be fully absorbed by crops, balanced growth of the crops is promoted, and the utilization rate of the agricultural organic fertilizer is increased.

The invention provides a high-yield planting method for a plum tree which comprises the following steps of 1) selecting a land; 2) planting; 3) performing waterproof treatment; 4) performing fertilizer and water management; 5) performing flower and fruit management; and 6) performing disease prevention and treatment. A water discharge pipe lower than the planting holes is buried in a drainage groove, and is capable of effectively discharging water accumulated in a rain reason, preventing a phenomenon that foot rot occurs due to non-timely water discharge; during a selected land ploughing process, green manure is added and is prepared from Chinese herbal medicinal ingredients, and the insecticidal effect, bacteriostasis effect and nutritional effect of the Chinese herbal medicinal ingredients can be fully utilized, so that the nutrition condition and physical and chemical properties of the soil are improved, a favorable foundation is laid for normal growth and development of plum tree seedlings; by use of the soil, the survival rate of the plum tree seedlings is 90% or above; in addition, during a planting stage, a soil layer and fertilizer combination mode is adopted, so that on one hand, the plum tree seedlings are capable of fully absorbing nutrition and fertilizer is saved, on the other hand, the fertilizer is compounded with a large amount of Chinese herbs, so that the plum tree seedlings are prevented from root dehydration, and the survival rate of the plum tree seedlings is improved.

The invention relates to a synthesis method for a magnesium potassium phosphate slow release fertilizer. The synthesis method comprises the following steps of: (1) adding potassium hydroxide or sodium hydroxide in a mixed solution of potassium salt and phosphate, and adjusting the pH value between 9.0 and 10.5, wherein the mole ratio of the potassium salt to the phosphate is 1.0-3.0; (2) adding the mixed solution in the step (1) into a magnesium-containing solution according to the mole ratio that Mg:P=(0.6-1):1, controlling the pH value between 9.0 and 10.5, and reacting at 15-40 DEG C for 10-30min; and (3) carrying out solid-liquid separation after the reaction is ended, and drying a sediment to obtain a magnesium potassium phosphate crystal. The method is simple in process flow and easy to operate; the purity of the synthesized magnesium potassium phosphate is higher; and a clear liquid obtained after the reaction can be still used as the fertilizer after being concentrated, so that the raw material utilization ratio is very high.

The compound fertilizer composed of (wt%) N 10-13, P 3-15, K 5-20, Ca 3-15, Mg 1-8, B 0-1, they are grinded, mixed, prilled, dried, cooled and screened to produce the compound fertilizer. the raw material used by this compound fertilizer is agricultural fertilizer sold in market, the compound fertilizer can provides ntrition required by loquat growing, blooming and fruiting.

The invention relates to a continuous production device of powdered and granulated polyphosphate fertilizer. The device comprises a urea conveying unit, a phosphoric acid conveying unit, a phosphate conveying unit, a pre-polymerizer, a belt type polymerizer, a tail gas treating unit and an aftertreatment unit; urea, phosphoric acid and phosphate which are conveyed by the urea conveying unit, the phosphoric acid conveying unit and the phosphate conveying unit respectively are mixed in the pre-polymerizer to perform prepolymerization reaction to obtain viscous materials with flowability, the materials sequentially completes heating polymerization and cooling solidification in the belt type polymerizer, and the materials are crushed in the aftertreatment unit to obtain the powdered and granulated polyphosphate fertilizer. Compared with the prior art, the device can realize continuous production of the powdered and granulated polyphosphate fertilizer, solves the problems that the polyphosphate is difficult to discharge continuously and difficult to crush in the conventional production process, has high producitivity and high production efficiency, has product performance which is easy to control, and can meet the development requirement of the modern agriculture on the novel fertilizer.

The invention discloses a method for preparing a phosphorus-magnesium fertilizer, which comprises the following steps: calcining high-magnesium phosphorus tailings at 880-1200 DEG C to obtain calcined dolomite; adding the calcined dolomite into phosphate fertilizer industrial acidic phosphorus-containing wastewater to perform neutralization and precipitation reaction until the pH value of the solution is 7-10, filtering the solution to obtain a clear solution and phosphorus/magnesium-containing solid-phase slag, and returning the clear solution to a phosphorus fertilizer production system or discharging after reaching the standard; and adding sulfuric acid, which accounts for 10-45 wt% of the solid-phase slag on dry basis, into the phosphorus/magnesium-containing solid-phase slag to react for 0.1-10 hours, drying the reaction product, and pulverizing to obtain the phosphorus-magnesium fertilizer. The method has the characteristics of lower wastewater treatment cost, low product cost and favorable economic benefit, and can recycle phosphorus and magnesium resources in the waste.

A biological organic fertilizer comprises the following raw materials in parts by weight: 85-96 parts of crop straws, 39-42 parts of animal manure, 24-28 parts of cake meal, 20-25 parts of biogas residue, 12-15 parts of an odor removal adsorbent, 7-8 parts of an inorganic compensator, 1.3-1.5 part of saccharomycetes, 1.2-1.5 part of bacillus licheniformis, 1.9-2.2 parts of a multi-temperature-period composite strain and the balance of water. The odor removal adsorbent is added in the preparation process of the organic fertilizer, and the surface of the activated carbon in the odor removal adsorbent is grafted with amino groups and C=S double bonds, and both can carry out adsorption reaction with heavy metal Hg <2+>, CO < 2+> and the like, so that adsorption and fixation of poisonous heavymetal ions are realized, meanwhile, the activated carbon can remove residual peculiar smell in the fermented product, and the problem that toxic heavy metal ions in the existing organic fertilizer cannot be completely removed is solved.

The invention discloses a planting method for organic selenium-enriched Guangchang white lotus. The planting method comprises the following steps: optimally selecting seeds of the Guangchang white lotus variety, using agriculture waste, such as pig manure and mushroom dregs, as main compost raw materials, and adding external source selenium, fermented bacteria, a compost nutrition conditioner and so on, preparing a compost fermented material; executing the compost fermentation by using a mode of the static forced ventilation combined with the stack-turned oxygen supply, and preparing a biologic selenium-enriched organic fertilizer; and selecting a field with good planting conditions as a white lotus field, and using the biologic selenium-enriched organic fertilizer as a base fertilizer, through the steps of field preparation, white lotus seed selection, transplanting and fix-planting of the white lotus seed and field management, planting the selenium-enriched Guangchang white lotus, and spraying biologic selenium-enriched nutrient solution in the early flowering season, full-bloom stage and out of bloom stage of the white lotus. The method has the characteristics of low investment of production devices, simple process, and convenient operation, is easy to implement and popularize, and has the remarkable social, economic and ecological benefits, and the extensive popularization and application prospect.

The invention provides a method for planting plums. The method comprises the steps: (1) carrying out land selection; (2) carrying out field planting; (3) carrying out fertilizer and water management; (4) carrying out fruit and flower management; and (5) carrying out disease control. According to the method, green manure is added during selected-land soil turning and is mainly prepared from traditional Chinese medicine ingredients, so that nutritional conditions and physical and chemical properties of soil can be improved through making full use of that traditional Chinese medicines have the actions of disinsection, bacteriostasis and being nutritive, a good foundation is laid for the normal growth and development of plum seedlings, and the survival rate of the plum seedlings can be 90% or more by using the soil; in addition, a soil layer and manure combined manner is adopted at a field planting stage, so that on one hand, the plum seedlings can thoroughly absorb nutrients, the manure is saved, on the other hand, a large amount of traditional Chinese medicines are blended into the manure, the plum seedlings can be free of a root burning phenomenon, and thus the survival rate of the seedlings is increased.

The invention provides organic fertilizer. The organic fertilizer is prepared from, by weight, 20-25 parts of crop straw, 10-15 parts of animal feces, 5-10 parts of humic acid, 5-8 parts of weatheredcoal powder. , 5-8 parts of dipotassium hydrogen phosphate, 5-8 parts of corn cobs, 4-6 parts of seaweed powder, 4-5 parts of urea, 4-5 parts of fish pond sludge, 4-5 parts of fermenting bacteria, 2-4parts of magnesium phosphate, 1-2 parts of sodium molybdate, 1-2 parts of compound sodium nitrophenolate, 0.5-1 part of trace element additive, 0.5-1 part of synergist, 0.5-1 part of conditioning agent, 0.5-1 part of anti-virus agent, 0.5-1 part of soil-modified functional flora and 0.5-1 part of penetrating agent. The agricultural organic fertilizer has the advantages that the fish pond sludge is adopted as the partial raw material, the nutrients of the organic fertilizer can be increased, the flora in the organic fertilizer can also be enriched, the fermentation efficiency and quality of the raw materials of the organic fertilizer are improved accordingly, and the fertilizer efficiency uniformity and stability of the organic fertilizer are improved.

The invention belongs to the technical field of cultivation of Chinese herbals and edible fungi and discloses a dendrobium officinale and black fungus interplanting method. The method includes the steps of cultivation of hyphae of black fungus, construction of a dead wood frame, transplantation of dendrobium officinale, management, harvesting and the like. The method has the advantages that (1), prepared culture media are nutritious and reasonable in collocation, growth of the dendrobium officinale and black fungus can be accelerated quickly, and high-yield and high-quality dendrobium officinale and black fungus can be produced; (2) according to the method, the black fungus are produced while cultivation of the dendrobium officinale is realized, and consequently space utilization rate and economic benefits are increased; (3) the method is environment friendly, simple in operation, low in production cost and easy for large-scale industrial development.