31 results about "Ocean acidification" patented technology

The invention discloses a method for eliminating soil acidification and secondary salinization of a facility vegetable field. The method is characterized by comprising the following steps of: adding crushed degradable organic materials into the soil of the vegetable field in which nitrate nitrogen is quickly accumulated and soil acidification and secondary salinization are performed, meanwhile, performing water flooding treatment, and monitoring the pH value, the NO<3-> content, the SO4<2-> content and the electric conductivity (EC) value of the soil; and when the pH value is more than 5.5, the NO<3-> content is less than 10 mg / kg, the SO4<2-> content declines to 50 percent of the initial value and the EC value is less than 1.0, draining the water, and thus finishing soil improvement after drying. According to the technical scheme, the soil characters of the vegetable field can be quickly and effectively improved; and the method is low in cost, simple, feasible and convenient to popularize in the basic level.

A method for sequestrating carbon dioxide in the ocean of the present invention coverts carbon dioxide into a high concentration of bicarbonate ions by using a neutralization method using calcium oxide commonly contained in alkaline industrial waste, prepares elution water for stably containing bicarbonate ions even when making contact with the atmosphere through aeration, and discharges the elution water into an area of the ocean of a relatively shallow depth to sequestrate carbon dioxide. According to the present invention, the present invention is a carbon dioxide storage method which uses alkaline industrial waste to carry out carbon dioxide ocean sequestration at relatively low cost, and can sequestrate carbon dioxide for a long time while minimizing bad environmental influences such as ocean acidification and the like, and is thus environmentally friendly. Therefore, it is possible to actively respond to carbon dioxide emission restrictions and simultaneously achieve economical efficiency by securing certified emission reductions henceforth.

The invention encompasses multi-stage naturally amplified global-scale carbon dioxide capture systems combining basic capture from (CC—carbon capture) clean-coal-fired and CC gas-fired power plants, natural-gas reformation systems, cement plants, outdoor air, home and building flues, incinerators, crematoriums, blast-furnaces, kilns, refineries, factories, oil gasification systems and coal gasification systems which yield concentrated carbon dioxide, with a collective, globally distributed capture capacity of up to 3 GtC / yr, feeding the captured carbon dioxide into land-based invention stage-1 bioreactors for rapid, selective, high capacity conversion to a high-density, fast-sinking marine algae by means of accelerated photosynthesis and / or coccolithogenesis (calcification) consuming carbon dioxide as the algae bloom, and transporting the stage-1 bioreactor-produced algae to seaports for seeding the oceans at regular intervals in stage-2 operations-at-sea to produce naturally amplified 14 GtC / yr algal blooms at sea, the stage-2 operations circumventing classic prior-art (and natural) ocean fertilization limits of low bloom rate, grazers eating algae seed before it blooms, interfering buoyant strains which don't clear the photic zone to allow light penetration for multiple blooms per year, and proximal post-bloom anoxia. A total invention CO2 capture and safe storage capacity of 17 GtC / yr (land and sea) is projected during fair-weather, and a 40% foul weather down-time allowance ensures that an average 10 GtC / yr of impact capture would result. If emissions are concurrently capped by at 12 GtC / yr by 2023, with invention-assisted reduction to 6 GtC / yr by 2050, 3 GtC / yr by 2062, and 1 GtC / yr by 2078, atmospheric CO2 will be reduced to 280 ppm by 2075.A spin-off technology includes hydrogen (H2) production by natural-gas reformation—enough H2 to fuel a significant fraction of transportation by 2050. Spin-off side benefits of the invention system include restoring ideal ocean pH and re-proliferating decimated marine populations, restoring them to levels last seen in the 18th to mid-19th centuries. Additional spin-off applications of invention bioreactor algal production include silage, animal feed, feed supplements, fertilizer, biofuels, food for fish and mollusk farming, cleansing lakes and rivers of bacteria and agricultural run-off, and elimination of coastal water HAB's (harmful algae blooms), such as the notorious “red tide” in Florida.

The invention provides a hydrangea macrophylla color change method. The method includes the steps: (1) selecting strong hydrangea macrophylla plants; (2) selecting red soil and leaf mould mixed soil for planting hydrangea macrophylla; (3) selecting NPK fertilizers containing N, P and K for fertilizing, wherein N:P:K=(5-10):(5-10):30. Compared with the prior art, the hydrangea macrophylla color change method has the advantages that the problems of soil acidification, sulfur element increase and the like caused by application of aluminum sulfate can be avoided; more importantly, the hydrangea macrophylla can be effectively turned into cyan by a specific ratio of N, P and K, and buds are increased remarkably in size; in addition, N, P and K are major elements for plants, and application of the NPK fertilizers cannot cause negative effects on plant growth.

The invention discloses a mixture biochar for improving acidic soil. The preparation method comprises the following steps: 1) Manure and straw are subjected to the following treatment respectively: first drying to a moisture content of ≤5%, and then pulverizing to a particle size of ≤ 5mm, so as to obtain manure granules and straw granules respectively; 2) Mix manure granules and straw granules according to the weight ratio of 3~1:1~3, and then put the mixture into an anaerobic airtight container and heat it to 300~700℃ Heat treatment for 2±0.25 hours; get a mixture of biochar for improving acidic soil. The invention uses manure and straw mixtures of different mass ratios as raw materials, and prepares novel high-efficiency biochar at different pyrolysis temperatures, which is used to improve the fertility of acidified soil, reduce soil acidity, and reduce the toxicity of heavy metals in soil.

The invention discloses a special fertilizer suitable for acid soil. The special fertilizer is prepared from 3,4-dimethylpyrazole phosphate, humic acid, calcium oxide, ammonium hydrogen carbonate, urea, diammonium phosphate and potassium nitrate. The special fertilizer suitable for acid soil can be used for improving the acid soil, increasing the pH value of the soil and reducing aluminum and heavy metal damage as well as soil-borne diseases caused by serious soil acidification and can also provide long-term and stable nutrients for the growth of crops.

The invention discloses acidified soil restoration fertilizer. The acidified soil restoration fertilizer is prepared from, by weight, 18-20 parts of dead leaves, 29-31 parts of potato straw powder, 6-7 parts of loofah powder, 1-2 parts of calcium cyanamide, 3-4 parts of sodium polyphosphate, 5-6 parts of dolomite powder, 28-30 parts of red gum bark, 19-21 parts of siderite slags, 19-21 parts of limonite slags, 65-70 parts of orange peels, 3-4 parts of EM compound microorganism bacterium agent and an adequate amount of water. According to the acidified soil restoration fertilizer, the soil acidification condition can be improved, the soil fertility disorders derived from soil acidification is relieved, a soil-borne disease caused by soil acidification is controlled, calcium ions in the soil are supplemented by adding the calcium cyanamide and the dolomite powder, a calcium ion leaching phenomenon caused by the soil acidification is relieved, various microelements are supplemented adequately, and restoration of acidified soil is achieved economically and effectively.

The invention discloses a non-damage preparation method for single crassostrea hongkongensis. The preparation method comprises the following steps: carrying out seedling collection by adopting a crassostrea angulata left shell as an adhering substrate, enabling seedlings of the crassostrea hongkongensis to be adhered onto the adhering substrate, and then carrying out seedling cultivation till the seedlings grow to be 30-60mm, so as to obtain adhering substrate combined clustered seedlings; placing the adhering substrate combined clustered seedlings into a culture cage, transferring the culture cage with the seedlings into a water body substrate-removing environment of which the salinity is 3-9 ppt, and the pH value is 6.00-6.75, and obtaining the single crassostrea hongkongensis after the crassostrea angulata left shell is molten. According to the invention, as the crassostrea hongkongensis has the characteristic of being capable of adapting to extreme environments with low salinity, low pH value and the like, the crassostrea angulata left shell is adopted as the adhering substrate, when the seedlings of the crassostrea hongkongensis grow to be 30-60 mm, the seedlings and the adhering substrate are placed in the culture cage, the culture cage is transferred into the environment with low salinity and low pH value, the cultivation is carried out for 15-30d, the adhering substrate is spontaneously and gradually molten through the ocean acidification reaction between slight acid brackish water and the crassostrea angulata left shell, the single crassostrea hongkongensis is prepared and scattered in the culture cage, and then, the single crassostrea hongkongensis is transferred to a proper culture area for continuing the cultivation.

The invention provides an even acid distribution method for acidification of a heterogeneous storage layer. The method comprises the following steps that a, after an acidification tubular column is tripped into a an oil layer bottom boundary in a well hole, high-permeation layer acidification liquid containing flocculent temporary plug materials is circulated to the middle portion of an oil layer, then a casing pipe gate is closed, the high-permeation layer acidification liquid is continuously injected into the oil layer, and the high-permeation layer acidification liquid containing the flocculent temporary plug materials is obtained by taking 0.8-1.2 m<3> of acid liquid from every meter of oil layer, adding 0.3-0.5 ton of temporary plug agent in the acid liquid on every meter of plug layer and then carrying out even mixing; b, when the pump pressure rises by 3-5 MPa, the pump car displacement is controlled, and 1.8-2.2 m<3> of acid liquid needed by low-permeation layer acidification is injected into every meter of oil layer; c, a pump is shut down for a reaction for 30-60 min; d, an oil pipe gate is opened for spraying, and residual acid is removed; and e, the oil pipe gate is opened, well washing liquid is pumped from the casing pipe gate, and a well drum is cleaned up. The problem that losses of acid liquid in conventional acidification are large is solved, and the acidification effect is effectively improved. Meanwhile, no special device or equipment is needed, and the defects that layering acidification wastes time, the cost is high, the process is complex, and accidents are likely to happen are overcome.

The invention relates to a laboratory simulation ocean acidification system which is characterized by comprising an experiment culture box system, a CO2 supply system, a water supply system, a water purifying system and a water heating device. The experiment culture box system comprises at least one culture tank. The water supply system comprises a water storage tank and a water pump. The water heating device comprises a heating bar and a thermometer. The CO2 supply system comprises a CO2 bottle, a CO2 enriching device, a gas supply pipeline and an annular nano aeration pipe. The water purifying system is disposed between the experiment culture box system and the water supply system. Compared with the prior art, the laboratory simulation ocean acidification system has the advantages that the required CO2 concentration set by the CO2 enriching device during operation can be pumped into the culture tanks according to the requirements of ocean acidification experiments, water pH value is kept stable, experiment result reliability and repeatability are guaranteed, and the system is simple in manufacturing process, low in cost, low in noise, and completely suitable for being operated in a laboratory and popularized and used.

The invention relates to an ocean acidification and low oxygen simulation device and a control method thereof. The ocean acidification and low oxygen simulation device comprises a gas source, an air drying and filtering pressure reducer, a standby safety electromagnetic valve, a CO2 filter, a drying filter, a mass flow controller, an acquisition controller, a water quality sensor and an exhaust valve group. According to the ocean acidification and low oxygen simulation device and the control method thereof, a pH value and a dissolved oxygen value of seawater are monitored in real time by meansof a pH sensor and a dissolved oxygen sensor, and the dual-incremental PID control mode is adopted for adjusting an aeration ratio of air, N2 and CO2, so as to adjust the pH level and the dissolved oxygen level of seawater to set values and keep them in steady states. The ocean acidification and low oxygen simulation device and the control method thereof can monitor and adjust the gas source ratio in real time, control the pH content and dissolved oxygen content of seawater synchronously, have the advantages of high steady-state precision, good dynamic response, short adjustment time and thelike, and can still maintain high precision under the condition of marine biological respiratory interference.

The invention discloses an acidified hardened soil restoring bacterial agent as well as a preparation method and application method thereof. The acidified hardened soil restoring bacterial agent is mainly prepared from the following ingredients in parts by weight: 10 to 30 parts of microbial agents used for obtaining exopolysaccharides through secretion, 10 to 25 parts of oyster shell powder, 2 to5 parts of nanometer micro electric power materials, 5 to 25 parts of mineral humic acid, 5 to 10 parts of amino acid, 5 to 10 parts of enzymatically hydrolyzed alginic acid and 2 to 5 parts of anionic polyacrylamide. The acidified hardened soil restoring bacterial agent is obtained through compounding various raw materials according to a specific proportion; the soil acidification and hardeningproblems can be effectively improved or prevented; soil is loosed and ventilated; the breath and growth of microbes and plant root systems in the soil are facilitated; meanwhile, the buffer capabilityof the soil is improved; the health and sustainable utilization of the soil can be promoted; and a great significance on the sustainable development of agriculture is realized. The preparation methodof the acidified hardened soil restoring bacterial agent is simple in process, and is applicable to large-scale production.

The invention provides a microbial agent for improving soil acidification and a preparation method thereof. The microbial agent is prepared from the following components: sodium acetate, yeast extract, phycocyanin, folium artemisiae argyi, glucose, ammonium sulfate, astragalus smicus, isofraxidin, calcium hydrophosphate, dolomite dust, paprika powder, protamine lactobacillus powder, agrobacterium bacterial powder and torulaspora delbrueckii bacterial powder, wherein the protamine lactobacillus powder has a living cell concentration of protamine lactobacillus of 8*10<8>CFU / g; the agrobacterium bacterial powder has a living cell concentration of agrobacterium of 4*10<8>CFU / g; and the torulaspora delbrueckii bacterial powder has a living cell concentration of torulaspora delbrueckii of 2*10<9>CFU / g. By adopting the microbial agent, plant root rot and main root nondevelopment caused by soil acidification can be remarkably improved.

Disclosed is a fracturing vessel operating system which is characterized in that a high-pressure pumping area is used for supercharging and pumping prepared fracturing fluid or acid liquor to a wellhead device; a proppant storage area and a bulk material storage area are respectively used for storing proppant and dry powder additives for fracturing operation; a fracturing control cabinet is used for operational control and data acquisition for construction equipment; an acid liquor storage area, a clean water storage area and a liquid additive storage area are respectively used for storing liquid raw materials of acid liquor, clean water and additives for the fracturing operation; a fracturing fluid mixing area and an acid liquor mixing area are respectively used for preparing the fracturing fluid and the acid liquor for the fracturing operation; a mass laboratory, arranged on the first-layer under deck of the fracturing vessel and close to the bow, is used for monitoring mass of the prepared fracturing fluid and acid liquor. The fracturing vessel operating system is an integration of a fracturing operating system and a vessel, utilizes internal space of cabins completely, meets technological requirements for stimulation operations such as ocean acidification, fracturing and sand control, and overcomes the failure in offshore oil and gas stimulation operation in scale.

The invention belongs to the technical field of carbon resource capturing and storing and relates to a system for achieving CO2 capturing and mineralization through an electrochemical method. The system is structurally composed of three parts of a hydrodynamic force module, a reaction module and a control and display module. By means of the electrochemical technology of a steady state, a transient state and combination of the steady state and the transient state, silicate is converted into carbonate, and CO2 capturing and mineralization are achieved. The CO2 capturing and mineralization system is mainly used for relieving the increasing greenhouse effect, liquid flow drained by the system is alkaline, and treatment of ocean acidification of local areas is achieved at the same time. The system can also be used for adjusting the concentration of CO2 gas in a closed space in real time and can also serve as an auxiliary facility for emission reduction of large CO2 emission enterprises.

The invention relates to an ecological breakwater technology, in particular to a waste concrete marine ecological engineering construction method, and belongs to the field of marine ecological engineering. The method comprises the steps that (1) the sea area where a breakwater is built is investigated; (2) a concrete attachment substrate is prepared; (3) seed oysters are collected quantitatively and farmed; (4) the surface of a waste concrete block is treated; (5) the waste concrete block is placed; (6) the oyster attachment substrate is placed on site; and (7) larva attachment monitoring andmanagement are performed. According to the method, blocks of building waste generated by buildings, infrastructures, etc. are utilized to build marine ecological breakwaters, the waste concrete can befully utilized in accordance with the characteristics of recycling and energy saving of the waste, the oyster attachment substrate can be further induced to grow, the water body is purified, shore-line erosion is prevented, biodiversity is maintained, carbon sequestration is achieved, ocean acidification is slowed down, and an ecological restoration ability is achieved.

The invention discloses a device for acquiring different carbon dioxide concentrations. The device comprises a CO2 storage tank, wherein the CO2 storage tank is serially connected with at least one CO2 concentration control unit in sequence through a CO2 conveying tube; the CO2 concentration control units are provided with dilution tanks; a tube inlet is formed in one side of each dilution tank; a tube outlet is formed in another side of each dilution tank; CO2 gas inlet tubes which extend to the bottoms of the dilution tanks and air inlet tubes are arranged at the tube inlets; the CO2 gas inlet tubes communicate with the CO2 conveying tube; air pumps are arranged on the air inlet tubes outside the dilution tanks; the dilution tanks are internally provided with CO2 conveying air pumps; and air outlets of the CO2 conveying air pumps are connected with diluted CO2 gas outlet tubes which extend out of the tube outlets. The device is low in equipment requirement, economic and easy to operate, convenient and precise in concentration control and applicable to tests for simulating ocean acidification.

The present invention belongs to the test technical field and relates to a field PH (potential of hydrogen) flowing water control system and method. The system comprises a flat platform, shunting pipes and a plurality of encircling nets; the flat platform comprises a CO2 tank, an air tank, automatic flow control devices, a buffer bottle, a metering pump and a PH transmitter, wherein the CO2 tank and the air tank are communicated with the buffer bottle through the automatic flow control devices; three double-layer experimental pools are arranged in each of the encircling nets; experimental living things and air stone are located at the upper layer and lower layer of each double-layer experimental pool respectively; the buffer bottle is communicated with the air stone through the metering pump and the shunting pipes; PH sensors area arranged in the encircling nets; and the PH sensors are connected with the metering pump through the PH transmitter. With the field PH flowing water control system and method adopted, stable long-term operation of PH in a field flowing water condition can be realized, and a reliable hardware guarantee can be provided for the research of the response of marine living things under a long-term ocean acidification condition, and obtained experimental results are more convincing.

The invention discloses artificial formula feed with the function of improving the abalone culture quality in the ocean acidification or ocean warming environment. The artificial formula feed is prepared from ingredients in percentage by mass: 15-30% of protein powder, 10-18% of starch, 3-15% of an adhesive, 25-50% of algae powder, 1-3% of yeast, 10-20% of microalgae powder, 2-3% of complex mineral element, 2-4% of complex vitamin, 1-2% of plant oil and 1-5% of calcium powder, wherein the total of the mass percent of the ingredients is 100%. The raw materials of the feed are wide in source, the feed can reduce the abalone death rate, maintains the relatively high growing rate and has the very good economic benefits when being applied to artificial breeding of abalone in the ocean acidification and ocean warming environment.

Systems and methods to separate carbon dioxide from flue gases and sequester carbon dioxide are described here. By using the properties of carbon dioxide and the temperature in a body of water (e.g., the ocean or freshwater body of water) or the temperatures of the ambient atmosphere, gaseous carbon dioxide can be converted to a liquid and separated from other gases. Pressure used to separate carbon dioxide from other gases may also be used to sequester liquid carbon dioxide. The liquid carbon dioxide is inert and can be discharged into the ocean without dissolving in seawater and acidifying the ocean. The liquid carbon dioxide may further be densified to be denser than seawater. The liquid carbon dioxide can then sink to the bottom of the ocean or be injected into ocean sediments or sediments and rocks beneath the ocean floor, inert and sequestered for the long term.

The invention discloses a non-damage preparation method for single crassostrea hongkongensis. The preparation method comprises the following steps: carrying out seedling collection by adopting a crassostrea angulata left shell as an adhering substrate, enabling seedlings of the crassostrea hongkongensis to be adhered onto the adhering substrate, and then carrying out seedling cultivation till the seedlings grow to be 30-60mm, so as to obtain adhering substrate combined clustered seedlings; placing the adhering substrate combined clustered seedlings into a culture cage, transferring the culture cage with the seedlings into a water body substrate-removing environment of which the salinity is 3-9 ppt, and the pH value is 6.00-6.75, and obtaining the single crassostrea hongkongensis after the crassostrea angulata left shell is molten. According to the invention, as the crassostrea hongkongensis has the characteristic of being capable of adapting to extreme environments with low salinity, low pH value and the like, the crassostrea angulata left shell is adopted as the adhering substrate, when the seedlings of the crassostrea hongkongensis grow to be 30-60 mm, the seedlings and the adhering substrate are placed in the culture cage, the culture cage is transferred into the environment with low salinity and low pH value, the cultivation is carried out for 15-30d, the adhering substrate is spontaneously and gradually molten through the ocean acidification reaction between slight acid brackish water and the crassostrea angulata left shell, the single crassostrea hongkongensis is prepared and scattered in the culture cage, and then, the single crassostrea hongkongensis is transferred to a proper culture area for continuing the cultivation.

A sunscreen is disclosed that promotes ocean health, especially for coral reefs. The sunscreen includes an active sunscreen component, a delivery component, and one or more alkalinity enhancing components. The sunscreen component filters or blocks some amount of harmful solar radiation from affecting the wearer's skin and is preferably reef-safe and free from ingredients that pose health risks to wearers. The alkalinity enhancing components counteracts ocean acidification, or raises the pH, of the local environment, e.g., in the vicinity of reefs. The delivery components facilitate application of the active sunscreen component to the wearer's skin such that the active sunscreen component is distributed across a protected area of the wearer's skin in an effective coverage amount. The sunscreen assists in coral reef recovery, as well as improving other ocean environments, and thereby promotes ocean health.

The invention belongs to the technical field of agricultural fertilizers, and relates to a special organic compound fertilizer for Citrus reticulata Blanco capable of alleviating soil acidification. The special organic compound fertilizer for Citrus reticulata Blanco capable of alleviating soil acidification comprises a component A, a component B, a component C and an auxiliary additive D, whereinthe component A comprises the following materials according to parts by weight: 30-40 parts of bran, 10-20 parts of silkworm excrement, and 5-10 parts of mineral materials; the component B comprisesthe following materials according to parts by weight: 15-25 parts of amino acid, 10-15 parts of isopropanol, 5-8 parts of humic acid, 3-8 parts of monopotassium phosphate, and 2-5 parts of a microbialagent; and the component C comprises the following materials according to parts by weight: 20-30 parts of animal excrement, 10-25 parts of pigwash, and 5-10 parts of rotten fruits. The special organic compound fertilizer for Citrus reticulata Blanco capable of alleviating soil acidification has the advantages that high-quality organic parent materials are combined with chemical fertilizers, so that high-yield production of high-quality fruits can be facilitated, soil acidification can be alleviated, and the soil fertility can be improved; the organic contents of soil are remarkably increased,and the soil acidification degree is reduced; and the soil microbial environment is improved.

Disclosed is a fracturing vessel operating system which is characterized in that a high-pressure pumping area is used for supercharging and pumping prepared fracturing fluid or acid liquor to a wellhead device; a proppant storage area and a bulk material storage area are respectively used for storing proppant and dry powder additives for fracturing operation; a fracturing control cabinet is used for operational control and data acquisition for construction equipment; an acid liquor storage area, a clean water storage area and a liquid additive storage area are respectively used for storing liquid raw materials of acid liquor, clean water and additives for the fracturing operation; a fracturing fluid mixing area and an acid liquor mixing area are respectively used for preparing the fracturing fluid and the acid liquor for the fracturing operation; a mass laboratory, arranged on the first-layer under deck of the fracturing vessel and close to the bow, is used for monitoring mass of the prepared fracturing fluid and acid liquor. The fracturing vessel operating system is an integration of a fracturing operating system and a vessel, utilizes internal space of cabins completely, meets technological requirements for stimulation operations such as ocean acidification, fracturing and sand control, and overcomes the failure in offshore oil and gas stimulation operation in scale.

The invention discloses a soil conditioning agent capable of alleviating soil acidification. The soil conditioning agent comprises the following raw materials in parts by weight: 25-32 parts of bean dregs, 10-20 parts of calcium superphosphate, 6-11 parts of spiral seaweed, 2-5 parts of ammonium sulfate, 15-30 parts of coal gangue, 25-34 parts of crop straw, 30-50 parts of bagasse powder, 16-21 parts of earthworm powder, 30-45 parts of rice husk powder, 40-55 parts of kieselguhr, 36-49 parts of urea, 6-13 parts of magnesium sulfate, 1-3 parts of potassium phytate, 5-12 parts of ardealite, 2-4parts of bacillus, 3-6 parts of pisolithaceae and 95-130 parts of water. Compared with the prior art, the soil conditioning agent has the advantages that the resource utilization rate is effectively increased, soil fertility is effectively improved, an improvement function on soil is achieved, the crop yield can be effectively increased, the crop quality can be effectively improved, the soil permeability can be effectively improved, the disease resistance of crops can be improved, the survival rate of tree planting and agricultural product yield can be greatly increased, and the quality of agriculture and forestry products can be improved.

The invention discloses a hickory soil acidification modifier. The hickory soil acidification modifier comprises the effective components of, by weight, 100 parts of calcium cyanamide, 15 to 30 parts of urea, 23 to 45 parts of dolomite dust, 23 to 45 parts of calcium oxide, 8 to 23 parts of magnesium oxide and 8 to 23 parts of microelements. By combining calcium cyanamide, urea and dolomite dust according to the proper use level ratio, the hickory soil acidification condition can be improved, soil fertility obstacles derived from soil acidification are relieved, soil-borne diseases caused by soil acidification are controlled, calcium ions in soil are supplemented, and the phenomenon of calcium ion leaching caused by soil acidification is relieved. The invention further discloses a preparation method of the hickory soil acidification modifier and a method for restoring the hickory acidification soil through the modifier. By the adoption of the method for restoring the hickory acidification soil, the fertilizer application amount can be greatly reduced, the acidification phenomenon of the hickory soil is improved fundamentally, the acidification soil can be restored economically and effectively, and the yield of hickory nuts is remarkably increased.

The invention belongs to the technical field of testing, and in particular relates to a field pH running water control system and a method thereof. The system includes a flat platform, a shunt pipe and a plurality of fences, and the flat platform includes a CO2 tank, an air tank, an automatic flow control meter, a buffer bottle, a metering pump, and a pH transmitter, wherein the CO2 tank and the air tank pass through the The automatic flow control meter is connected to the buffer bottle, and each fence is equipped with three double-layer experimental pools. The upper and lower layers are respectively equipped with experimental organisms and air stones. A pH sensor is arranged in the middle of the fence, which is connected with a metering pump through a pH transmitter. The invention can realize the stable long-term operation of pH under the condition of running water in the field, and provide reliable hardware guarantee for studying the response of marine organisms under the condition of long-term ocean acidification, and the experimental results obtained thereby are more convincing.