205 results about "Potash" patented technology

The invention relates to the technical field of hydraulic supports for potassic salt mines, in particular to an assembling device and method for a top beam of a hydraulic support for potassic salt mines, the assembling device comprises a first tool used for pre-assembling an outer main reinforcement assembly, and in a first positioning state, a positioning plate is supported on one side of a main reinforcement corresponding to the outer main reinforcement assembly in parallel; the corresponding lug plates or flitch plates are positioned between the positioning plates and the main reinforcements; the top beam has the beneficial effects that the inner main reinforcement assembly and the outer main reinforcement assembly are both pre-assemblies, that is, the subsequent assembling and welding processes are carried out after welding is completed to form a module, the assembling efficiency of the top beam is improved, and the assembling efficiency of the top beam is improved. Under the action of the first tool, the outer main reinforcement assembly can be efficiently assembled, and the possibility of wrong assembly is reduced through accurate positioning, so that the safety and the stability of the whole structure are improved.

The invention discloses a potash magnesium sulphate synergistic application mechanism optimization method, and relates to the field of intelligent agricultural fertilization control. According to the method, growth characteristic parameters such as the fruit weight gain rate and the root distribution depth of the citrus reiculata Blanco are collected in real time, and the fertilization amount is calculated and dynamically adjusted in combination with the T-S fuzzy model, so that the fertilization amount can accurately meet the growth requirements of crops, and excessive fertilization or insufficient fertilization is avoided.

The invention relates to an alkaline activated carbon multi-stage synergistic potassium removal method, and belongs to the technical field of activated carbon materials. According to the method, a four-step synergistic process of water washing, acid pickling, ion exchange and nitrogen calcination is adopted, and a waste acid recycling closed-loop system is combined. The deep removal of residual potassium is realized through the synergistic effect of countercurrent water washing, pH (Potential of Hydrogen) staged regulation and control acid washing, deep potassium removal by ion exchange resin and nitrogen protection calcination, and meanwhile, the high specific surface area is maintained; the pickling waste liquid is neutralized, concentrated and crystallized to be converted into agricultural potash fertilizer, and mother liquid is recycled to form green circulation.

The present invention relates to a crop nutrition and fortifying composition comprising: i. Elemental sulfur; ii. One or more water insoluble or water soluble magnesium salts or derivatives or mixtures thereof; iii. One or more water-insoluble or water-soluble potash fertilizers or salts or derivatives or mixtures thereof; iv. One or more water insoluble or water soluble iron salts or derivatives or mixtures thereof; v. One or more water insoluble or water soluble zinc salts or derivatives or mixtures thereof; vi. One or more water-insoluble or water-soluble boron salts or derivatives or mixtures thereof; vii. At least one trace element selected from the group consisting of water-insoluble or water-soluble vanadium salts or derivatives or mixtures thereof and water-insoluble or water-soluble selenium salts or derivatives or mixtures thereof; and viii. One or more excipients wherein the composition comprises microparticles having a size in the range of 0.1 to 50 microns, and wherein the total content of the water-soluble salts, derivatives or mixtures in the composition does not exceed 80% of the total weight of the composition. The invention also relates to a method for preparing the crop nutrition and fortifying composition and a method for treating a plant, a seed, a crop, plant propagation material, a locus, parts thereof or soil with the crop nutrition and fortifying composition.

The invention relates to the technical field of sustained and controlled release fertilizers, in particular to a soil-improving disease-resistant sustained and controlled release fertilizer and a preparation method thereof. The preparation method comprises the following steps: (1) preparation of the nutrient core: weighing an organic fertilizer, an ammonium nitrogen fertilizer, a phosphate fertilizer, a potash fertilizer, a biological regulator, chelated medium trace elements and modified attapulgite, uniformly mixing, and granulating to obtain the nutrient core; (2) covering an organic polymer coating layer: dissolving polylactic acid in a solvent to form a composite solution, spraying the composite solution on the surface of the nutrient core, and drying to obtain an organic polymer coated nutrient core; and (3) covering a mineral coating layer. The outermost layer of the soil-improving disease-resistant controlled-release fertilizer provided by the invention is the mineral coating layer, the mineral coating layer can be gradually disintegrated after being applied to soil, mineral components can improve the physical structure of the soil, regulate the acid-base property of the soil and increase the content of organic matters in the soil after entering the soil, and inorganic and organic nutrients are slowly released into the soil through the organic polymer coating layer; nutrient substances are continuously supplied, and common diseases of the corn are prevented and controlled.

The invention relates to the technical field of water-soluble fertilizers, in particular to a water-soluble organic fertilizer and a preparation method and application thereof.The water-soluble organic fertilizer is prepared from, by mass, 40-100 parts of basic organic raw materials, 5-15 parts of microbial fermentation additives, 10-20 parts of nutrient element supplements and 3-7 parts of synergists; the microbial fermentation additive comprises a compound microbial agent and a microbial growth carrier, the nutrient element supplement comprises a nitrogenous fertilizer, a phosphatic fertilizer, a potash fertilizer and medium trace elements, and the synergist comprises fulvic acid and alginic acid. According to the water-soluble organic fertilizer and the preparation method and application thereof, efficient utilization and accurate supply of nutrients are achieved, the growth requirements of crops in plant factories are met, meanwhile, resource utilization of organic waste is promoted, and sustainable development of the plant factories is promoted.

A granular cohered MOP fertilizer having one or more micronutrients, and one or more binding ingredients. The fertilizer is prepared by compacting MOP feed material with a source of zinc and one or more optional binders to form a cohered MOP composition. The cohered MOP composition is then further processed, such as by crushing and sizing, to form a cohered granular MOP product containing a source of zinc. The process yields a fertilizer product containing micronutrients with superior elemental and granule size distribution without compromising handling or storage qualities.

The invention discloses a method for increasing the yield of ratooning rice, and relates to a fine field management technology. In the whole process from sowing to harvesting, the method comprises the steps that nitrogenous fertilizer, phosphate fertilizer and potash fertilizer are applied in the specific growth stage, shallow water layer irrigation is kept, and water management is conducted immediately after first season rice is harvested so as to promote growth in the regeneration season. In addition, the method further comprises the steps of exogenous spraying of a plant growth regulator in the key growth period and unified management of diseases and pests. According to the technical scheme, the yield and stability of ratooning rice are improved by optimizing fertilization, irrigation and use of a plant growth regulator, and meanwhile environment safety and crop quality are guaranteed.

The invention discloses a special potassium-promoting signal substance-containing slow / controlled-release bulk blending fertilizer for flue-cured tobacco and a preparation method thereof, and belongs to the technical field of controlled-release fertilizer production. The coated controlled-release potash fertilizer is prepared by adding signal substances, and the utilization rate of the fertilizer can be effectively improved. Signal substances including citric acid, lauric acid, rutin, glutamic acid and berberine are synchronously released along with the potash fertilizer, and the citric acid and the lauric acid promote the activity of microorganisms and enhance the mineral dissolving capacity of the microorganisms through soil acidification and chelation, so that the nutrient absorption of plants is improved; rutin and glutamic acid significantly improve the absorption efficiency of potassium ions by adjusting the ion permeability of plant roots and the activity of transporter, and berberine further optimizes the absorption, transport and distribution of potassium ions by adjusting calcium and potassium transport systems in cells. The absorption and utilization of potassium ions by tobacco plants are improved, and the quality of tobacco leaves is improved.

The invention relates to a high-gloss black decorative glass prepared from sludge incineration ash by an all-electric melting method. The high-gloss black decorative glass comprises the following raw material components in percentage by mass: 75-79% of fly ash, 5-7% of calcium carbonate, 9-10% of sodium carbonate, 5-6% of potassium alkali, 1-1.4% of boric acid, 0.03-0.04% of porous carbon, 0.06-0.08% of semi-coke powder, 0.16-0.22% of cobaltosic oxide, 0.1-0.2% of cerium dioxide, 0.04-0.06% of neodymium oxide, 0.5-0.7% of waste zircon brick powder and 0.03-0.05% of yttrium oxide. The dedusting ash is electrostatic dedusting ash collected by incineration of filtered sludge in a municipal sewage treatment plant, and belongs to hazardous waste; the porous carbon is rich in a hierarchical pore structure of sub-nano pores (0.5-1.0 nm). According to the method, a closed-loop production mode that waste is used for treating waste is constructed, high-added-value decorative materials are produced while energy consumption is reduced, and environmental protection investment is converted into economic benefits.

The invention discloses a short-distance multi-ore-bed potassic salt ore large-section long-strip comprehensive mechanized mining method, and belongs to the technical field of potassic salt ore deposit mining. The method comprises the steps that a centralized transportation roadway is arranged on an upper head mining layer, an auxiliary transportation roadway is arranged in a stable salt rock interlayer between ore layers, and combined development is achieved; arranging large-section long strip chambers in the ore blocks along the inclination direction, and reserving permanent spacing strip pillars to maintain the stope to be stable; a chamber is cut and formed at a time by a double-arm large-mining-height mining machine, and efficient stoping is realized by matching with a continuous transportation system; multiple ore beds are mined in a coordinated mode from top to bottom in sequence, and the ore block air return way and the ore block air return way of the upper ore bed are staggered by 20 m or above so as to avoid stress superposition; a full-air-pressure ventilation system combining a press-in type and a draw-out type is constructed; natural supporting is achieved through permanent spacing strip pillars and natural top and bottom plates, safety is guaranteed through a micro-seismic and top plate monitoring system, and the goaf is backfilled with tail salt slurry to achieve green mining. According to the method, safe, efficient and high-recovery-rate mining of the short-distance multi-ore-bed sylvite ore is achieved.

The invention discloses bacillus megaterium YK35 and application thereof, and belongs to the technical field of microorganisms. The strain is preserved in the China General Microbiological Culture Collection Center on October 9, 2024, and the preservation number is CGMCC (China General Microbiological Culture Collection Center) No.32158; the strain has efficient potassium dissolving capacity and IAA (indoleacetic acid) producing and phosphorus dissolving capacity, and can remarkably promote the growth of crops; excellent stress resistance including heavy metal stress resistance, acid and alkali stress resistance, salt stress resistance and flooding stress resistance is achieved, and the adaptability is wide; the invention also provides a microbial agent containing the strain. Pot experiment and field experiment verification show that the microbial agent can promote the growth of plants; the yield and quality of the potatoes can be remarkably improved, and the effects of high yield and income increase are achieved; the application of potash fertilizer can be reduced through the potassium dissolving function of the fertilizer; the invention provides a new strain resource for the microbial fertilizer industry, and shows a strong application value in the aspect of growth promotion and yield increase of rhizosphere.

The present invention relates to a crop nutrition and fortifying composition comprising an effective amount of the following ingredients: elemental sulfur; one or more magnesium salt derivatives or mixtures thereof; one or more potash fertilizers or salts or derivatives or mixtures thereof; one or more iron salts or derivatives or mixtures thereof; one or more zinc salts or derivatives or mixtures thereof; and one or more excipients. The composition comprises particles having a particle size ranging from 0.1 to 50 [mu] m wherein the elemental sulfur content is from 5% to 90% by weight; the content of the element magnesium is 0.1%-40% (weight percentage); the content of the element potassium is 0.1%-40% (weight percentage); the content of the element iron is 0.1%-45% (weight percentage); and the content of the element zinc is 0.1-45% of the total weight of the composition. The invention also relates to a method for preparing the crop nutrition and fortifying composition, and a method for treating a plant, a seed, a crop, plant propagation material, a locus, parts thereof or soil using the crop nutrition and fortifying composition.

The invention discloses an organic potassium fertilizer and a preparation method thereof. The preparation method comprises the following steps: pretreating a novel natural organic matter, a mineral potassium source and an enhanced biological active agent; uniformly mixing the pretreated novel natural organic matter with a mineral potassium source, and adding the plant-derived stimulant in the mixing process to obtain a mixed material containing the plant-derived stimulant; inoculating an enhanced bioactive agent into the mixed material containing the plant-derived stimulant, and performing composting fermentation in an aerobic environment to obtain a fermented mixed material; screening and processing the fermented mixed material to obtain organic potash fertilizer particles; and adding an environmental response type auxiliary agent to carry out coating treatment on the organic potassium fertilizer particles to form microcapsules, and drying and crushing the microcapsules to obtain the organic potassium fertilizer which is easily dissolved in water to form a liquid fertilizer. The prepared organic potash fertilizer not only can improve the nutrient content and the organic matter proportion of the fertilizer, but also can enhance the physical stability and the chemical adaptability of the fertilizer.

The invention belongs to the technical field of chemical fertilizer production and livestock feed, and particularly relates to a combined preparation method of water-soluble potassium sulfate and feed-grade potash magnesium sulphate fertilizer. According to the method, the picromerite concentrate wet material is taken as an initial raw material, the picromerite concentrate wet material with relatively low potassium and magnesium content is purified into high-grade potassium sulfate and the potash magnesium sulphate fertilizer by utilizing hot melt mother liquor at different mother liquor points through multi-stage hot melt and multi-stage vacuum evaporative crystallization, so that efficient distribution and conversion of potassium and magnesium elements in the raw material are realized, resource waste is avoided, and the production cost is reduced. The comprehensive utilization rate of raw materials is greatly improved. Two high-added-value products, namely the water-soluble potassium sulfate and the feed-grade potassium-magnesium fertilizer, are prepared at the same time, and the blank of combined preparation of raw materials required by agriculture and animal husbandry is filled.

The invention discloses conveying equipment for preparing a carbon-sequestration potassium humate fertilizer, and relates to the technical field of fertilizers, and the conveying equipment comprises a drying mechanism. According to the conveying equipment for preparing the carbon-sequestration potash humate fertilizer, through the design of the drying mechanism, hot air flow is generated through a dryer, the hot air flow moves towards one side of the drying shell along a connecting pipe, and the hot air flow is conveyed from a grating plate to the inner side of a protective cover, so that the effect of drying the interior of the equipment is achieved, and moisture in the equipment is reduced; the fertilizer surface is prevented from being too humid, the fertilizer is prevented from caking to influence the conveying effect, and the situation that the subsequent cleaning difficulty is increased due to the fact that the fertilizer is adsorbed on the surface of a component due to too humid fertilizer, and the service life of equipment is influenced due to the fact that the corrosion effect is easily increased due to too humid fertilizer is avoided; the grating plate plays a role in blocking fertilizer particles from entering, the ventilation effect is prevented from being affected, the conical block is designed to be of a conical structure, fertilizer flowing is increased through the inclination angle, and the fertilizer adsorption probability is reduced.

The invention relates to the technical field of water-soluble fertilizer production, in particular to a slow-release polyglutamic acid water-soluble fertilizer and a preparation method thereof. The slow-release type polyglutamic acid water-soluble fertilizer is prepared from the following raw materials in parts by mass: 2 to 10 parts of polyglutamic acid master batch, 18 to 28 parts of nitrogen fertilizer, 12 to 22 parts of phosphorus fertilizer, 15 to 20 parts of potassium fertilizer, 4 to 16 parts of medium trace elements, 9 to 15 parts of polyglutamic acid fermentation liquor and 35 to 60 parts of slow-release coating agent, the slow-release coating agent comprises the following raw materials in parts by mass: 6-13 parts of lecithin, 2-4 parts of sodium thiosulfate, 8-18 parts of vegetable oil and 19-40 parts of a zinc oxide-loaded cellulose / chitosan-based composite material; according to the slow-release type polyglutamic acid water-soluble fertilizer and the preparation method thereof, the polyglutamic acid water-soluble fertilizer is subjected to coating treatment, so that nutrients in the fertilizer can be slowly and continuously released, the effective supply time of the nutrients is prolonged, and the utilization rate of the fertilizer is increased.

The invention relates to the technical field of crop cultivation, and discloses a matched cultivation method for strong gluten wheat seed production and application thereof.The method comprises the steps that soil improvement before sowing is conducted, specifically, deep ploughing, organic fertilizer and compound fertilizer application and medium trace element supplement are conducted; then optimizing fertilization management, and applying a potassium fertilizer by nitrogen and sulfur combined application, adjusting a nitrogen fertilizer application strategy and applying the potassium fertilizer by stages; then an optimized sowing technology is implemented; then, precise irrigation and moisture regulation are conducted, the irrigation opportunity and times are optimized, and moderate deficiency of the soil is kept in a specific period; and finally, carrying out comprehensive pest control in parallel or in corresponding stages in the whole growth cycle. By integrating key measures such as soil improvement, scientific fertilization, fine seed close planting, precise irrigation and comprehensive plant protection, a set of synergetic and efficient strong gluten wheat seed production technology system is established, the seed yield and quality are remarkably improved, and the problems of unstable quality, low nutrient utilization rate, water resource waste, insufficient pest control and the like are solved.

The invention discloses an alpine meadow ecological construction maintenance method, which relates to the technical field of ecological engineering, and comprises the following steps: cutting a meadow by using cutting equipment, and stripping by using stripping equipment; humus soil under meadows is collected after stripping; a meadow intelligent maintenance bin is used for carrying out stockpiling maintenance on the stripped meadow; humus collected after stripping is used for conducting back-laying recovery on the maintained meadow, in the growing period after back-laying of the meadow, potash fertilizer is applied to the meadow, and 1.5-2 kg of potash fertilizer is applied per 400 square meters. According to the construction and maintenance method, the survival rate of the meadow is increased, the construction cost is lower, the construction efficiency is higher, and scientific basis and technical reference can be provided for stripping, stockpiling, maintenance and laying-back work of the alpine meadow in different seasons.

The invention relates to the field of organic fertilizer production, in particular to an organic fertilizer, organic fertilizer production equipment and an organic fertilizer production method.The method comprises the following steps that firstly, organic fertilizer raw materials are introduced between two processing cavities; 2, the organic fertilizer raw materials are stirred through a stirring mechanism, and gas is introduced into the organic fertilizer raw materials in the stirring process of the stirring mechanism; 3, the organic fertilizer raw materials are kept fluffy in the mixing process; the invention relates to an organic fertilizer, which comprises the following raw materials by weight: 20-22 parts of straw; 15 to 18 parts of animal waste; 5-8 parts of plant ash; 2-6 parts of phosphate fertilizer, 5-8 parts of potash fertilizer and 2-6 parts of nitrogen fertilizer.

The invention discloses a microorganism-inorganic compound fertilizer and a preparation method thereof, and belongs to the technical field of fertilizer preparation.The compound fertilizer is composed of a compound fertilizer A and a compound fertilizer B. The compound fertilizer A is prepared by adding glycerin into a microorganism bacterium solution and then loading with charcoal, and the charcoal and the glycerin can protect microorganisms and provide nutrition; good proliferation and growth of microorganisms are promoted; calcium bentonite is adopted to embed potash magnesium sulphate fertilizer to prepare granules to obtain a combined fertilizer B, and the calcium bentonite embedded potash magnesium sulphate fertilizer granules are treated to ensure that fertilizer components in the granules are slowly released at a constant speed within a long time; the potash magnesium sulphate fertilizer and the microorganisms are embedded and blended to prepare the combined fertilizer, the problem that the microorganisms and the potash magnesium sulphate fertilizer are incompatible is solved, the combined fertilizer A and the combined fertilizer B jointly act to provide nutrients for crops in the whole growth cycle, fertilizer waste is reduced, the fertilizer absorption rate is increased, meanwhile, the fertilization operation cost is reduced, and the production cost is reduced. Good application prospects are realized.

The invention provides a sylvite flotation reagent dosage dynamic control method. The sylvite flotation reagent dosage dynamic control method comprises the following steps that at least one ore pulp parameter and at least one foam image characteristic parameter of a sylvite flotation system are collected in real time; dynamically calculating a flotation reagent dynamic response coefficient required at the current moment based on the collected real-time parameters; according to the dynamic response coefficient of the flotation reagent, the adding amount of the flotation reagent is adjusted in real time; according to the method, the multi-dimensional key parameters are collected in real time, the dynamic response model integrating multi-parameter coupling, historical efficiency accumulation and process time delay correction is constructed, accurate and real-time adjustment of the drug dosage is achieved, meanwhile, the method has the model self-adaptive calibration capability, and the problems that in the prior art, control precision is low, and adaptability is poor are solved.

The invention relates to a hydraulic support base for potassic salt ore. The hydraulic support base comprises a first base body, a second base body, a gap bridge plate, a first connecting pin and a second connecting pin. Strip-shaped holes extending in the vertical direction are formed in the two ends of the gap bridge plate; a first lug plate is arranged on the inner side of the first base, and a second lug plate is correspondingly arranged on the inner side of the second base; the long-strip-shaped holes in the two ends of the gap bridge plate are hinged to the first lug plate and the second lug plate through a first connecting pin and a second connecting pin respectively. The axial directions of the first connecting pin and the second connecting pin are front and back directions; the first connecting pin and the second connecting pin can slide along the long-strip-shaped hole, dislocation of the first base and the second base is achieved, and therefore the support can cope with potassic salt ore bottom plates of different forms, and the support has the advantages that local suspension or stress concentration caused by unevenness of the potassic salt ore bottom plates can be effectively avoided, and the stability of the support under the potassic salt ore complex terrain is maintained. And the position of the base can be flexibly adjusted according to site ground conditions, installation is rapidly completed, and the installation time is greatly shortened.

The invention relates to a planting method for covering rice with a biodegradable film in a cold region. Comprising the following steps: (1) dry seedling raising: sowing 20-30g of seeds in each square meter of seedbed by adopting drill sowing or broadcast sowing; (2) preparing a compartment surface, turning over the soil, and loosening the soil; (3) applying a base fertilizer at one time, and applying 7-8 kg / mu of a nitrogen fertilizer, 2-4 kg / mu of a phosphate fertilizer, 3-5 kg / mu of a potassium fertilizer and 1.0-1.5 kg / mu of a zinc fertilizer to the compartment surface; (4) covering a film on the compartment surface, and covering a biodegradable film to be tightly attached to the soil 2-3 days after the fertilizer is applied; (5) transplanting plantlets: transplanting the plantlets when 3-4 true leaves grow on each seedling; (6) water management: after rice transplanting, water is kept in furrows, and no water exists on film surfaces; drying the field in the vigorous tillering stage; (7) timely harvesting. The growth conditions of heat tension, short rice growth period and limited yield potential in the northeast cold region in China are solved, temperature increasing, water retention and fertilizer saving can be achieved, and the comprehensive benefits of rice planting in the northeast cold region are improved.

The invention relates to the technical field of bio-fertilizers, in particular to a compound fertilizer for improving tobacco leaf oil content and a preparation method of the compound fertilizer. According to the organic fertilizer, the fermented fertilizer, the potash fertilizer and the microelement fertilizer are reasonably proportioned and applied aiming at the general deficiency of tobacco leaf oil content, so that effective component factors such as amino acid, phytic acid and phospholipid required by tobacco can be supplemented, coordination of chemical components in the tobacco leaves is promoted, the oil content of the flue-cured tobacco leaves can be effectively improved, and the aroma quality of the tobacco leaves is further improved; and the method is beneficial to subsequent processing and production of the flue-cured tobacco, and has important significance for improving industrial availability and smoking quality of the tobacco leaves.

The invention discloses a preparation method of a stabilized fertilizer and granulation equipment for production, and relates to the technical field of fertilizer production, and the preparation method comprises the following steps: heating a nitrogen fertilizer in a melting tank to a molten state, and sequentially adding a crushed potash fertilizer, a crushed phosphate fertilizer, a crushed trace element fertilizer and a nitrification inhibitor into the melting tank to obtain a molten mixed fertilizer; feeding the molten-state mixed fertilizer to a high-tower granulation device to obtain an inner core; polylactic acid, acetone, alginate oligosaccharide, glycerin and starch are sequentially sent to a stirring kettle to be stirred and mixed, the mixture is sprayed to the outer wall of the cooled inner core, and an adhesion layer is formed on the outer wall of the inner core after drying; spraying the slurry to the surface of the adhesion layer, and then drying at low temperature to form a dormant bacterium layer on the outer wall of the adhesion layer; and spraying the coating solution to the outer wall of the dormant bacterium layer, and performing low-temperature cooling to obtain an outer coating layer. Therefore, through the combination of the inner core, the adhesion layer, the dormant bacterium layer and the outer coating layer, the fertilizer efficiency release rate is greatly slowed down, so that the fertilizer provided by the scheme can be more lasting and effective.

The invention discloses a preparation method and an application method of straw wet biochar for carbon sequestration and emission reduction in rice and wheat rotation. The preparation method comprises the specific steps of preparation and application of the straw wet biochar. The preparation method of the straw wet biochar comprises the steps of raw material preparation, low-temperature combustion, normal-temperature slow oxidation, electromagnetic radiation treatment, microwave heating and light wave sterilization, filtration and freezing and cold storage treatment. The method is mainly used for improving straw resource utilization of a rice and wheat system. The preparation process is low in energy consumption and little in smoke dust, carbon volatilization in the straw is reduced, and the content of fixed carbon in the straw is greatly increased. According to the specific application, the compound fertilizer is mixed with fertilizer according to a certain weight ratio of the compound fertilizer to plough layer rice soil and then applied at a time during rice planting. Wherein the nitrogen fertilizer is a mixture of quick-acting urea nitrogen and slow-release urea nitrogen, and the phosphate fertilizer and the potash fertilizer are conventional fertilizers. The fertilizer can promote the increase of gaps in rice soil and the water retention of wheat soil, reduces the emission of N2O, CO2 and CH4 in the rice and wheat planting process after being applied, improves the organic carbon content of soil, reduces the emission of greenhouse gas carbon (CO2), and promotes the increase of the crop rotation yield of rice and wheat.

The invention discloses a low-resilience sprayed concrete admixture as well as a preparation method and application thereof, and relates to the technical field of engineering materials. The admixture is prepared from the following raw materials in parts by weight: 400 to 500 parts of silica fume, 100 to 250 parts of fluffy ash, 200 to 320 parts of pretreated coal gasification furnace slag micro powder, 20 to 30 parts of disodium dihydrogen pyrophosphate, 10 to 15 parts of sodium dihydrogen phosphate, 20 to 30 parts of sodium hexametaphosphate, 5 to 10 parts of rubber powder and 5 to 10 parts of cellulose ether. The preparation method comprises the following steps: weighing the raw materials in parts by weight, adding the raw materials into a concrete mixer, and uniformly stirring for 15-30 minutes; and bagging the uniformly stirred mixture to obtain the low-resilience sprayed concrete admixture. The obtained admixture is applied to sprayed concrete, and the low-resilience sprayed concrete is obtained. The problems that existing coal gasification slag sprayed concrete is low in construction efficiency, and the engineering quality is difficult to meet the requirements are solved.

The invention discloses a solid potassic salt mine underground screening and crushing integrated ore storage bin system, and belongs to the technical field of solid potassic salt mine mining. The system is composed of a roadway type raw ore bin, a feeding chamber and a vertically-arranged screening and crushing chamber. The raw ore bin is communicated with the main transportation roadway and is internally provided with a bulldozer; the feeding chamber is provided with a surge bin and a screw feeder; a linear vibrating screen and a double-geared-roller crusher are arranged in the screening and crushing chamber. The core of the method is that oversize coarse grain materials are returned to a surge bin through an oversize transfer belt conveyor to form closed-loop crushing circulation, and it is ensured that the ore removal granularity is smaller than or equal to 20 mm. The problem that sylvite ore is prone to deliquescence and hardening is fundamentally solved through the roadway type ore storage bin, underground storage, screening and crushing integrated operation is achieved, the ore directly enters an ore dressing, decomposing and crystallizing workshop after being lifted to the ground, the ground ore dressing links are reduced, occupied ground sites are reduced, the working efficiency and the system reliability are improved, and the production cost is reduced. The method is especially suitable for efficient mining of deliquescent solid potassic salt ore.

The invention provides a potassium-dissolving bacteria-iron-based potassium-containing nano material and a preparation method thereof, and belongs to a bio-fertilizer technology, and the preparation method comprises the following steps: dispersing soluble iron salt in water to obtain a solution A; dispersing a soluble phosphoric acid source and potassium salt in water to obtain a solution B; dispersing a stabilizer in water to obtain a solution C; simultaneously dropwise adding the solution A and the solution B into the solution C at the same speed, controlling the pH value to be 2.5-4.0 through alkali liquor, stirring for reaction, standing and aging to obtain the iron-based potassium-containing nano material; inoculating potassium-dissolving bacteria into a liquid culture medium, and carrying out enlarged culture to obtain a bacterial suspension; and mixing the bacterial suspension with the iron-based potassium-containing nano-material to obtain the potassium-dissolving bacteria-iron-based potassium-containing nano-material. The iron-based potassium-containing nano-material contains potassium, the iron-based potassium-containing nano-material and the potassium-dissolving bacteria act together to form a dual potassium supply mechanism that the potassium-dissolving bacteria decompose soil potassium and the iron-based potassium-containing nano-material releases potassium, and the effect is far better than that of single use of a microbial inoculum or a common potash fertilizer.