37results about How to "Won't wash away" patented technology

The invention discloses a flood control well lid and relates to a well lid. The flood control well lid comprises a well lid body and a well lid base. The well lid body comprises an outer disc and an inner cover. The outer disc comprises a bottom disc, a support and a guiding body. A cone hole is formed in the end face of the bottom disc. The guiding body is fixed in the cone hole through the support. The guiding body is provided with a guiding through hole. A floating lid comprises a cavity, a connecting rod and a limiting block, the inner portion is a cavity, the cavity is matched in the cone hole, the connecting rod penetrates through the guiding through hole, the upper end of the connecting rod is connected with the cavity, the limiting block is fixed at the lower end of the connecting rod, and accordingly the effect of automatic water draining flood control during rainstorm is achieved.

The invention discloses a petroleum pipeline cleaning and detecting robot. The petroleum pipeline cleaning and detecting robot comprises a walking mechanism, a cleaning and detecting mechanism and a control mechanism; the walking mechanism is provided with an axis motor, through forward and reverse rotation of the motor, lead screws are driven to rotate, then lead screw slide blocks and slide rodsare made to move to the two sides or to the middle, and the height of a transverse beam and the height of wheels are changed to achieve diameter varying, so that different pipe diameters are adaptedto; the control mechanism is provided with a control module and gear sets which are covered with a shell, the control module of the control mechanism comprises a power source, a motor and a single-chip microcomputer, and the control mechanism is furthermore connected to the walking mechanism through a support, and conducts information interaction with the axis motor of the walking mechanism and pressure sensors at the legs; the cleaning and detecting mechanism covers the outer side of the control mechanism, and through the arrangement of a runner, a replaceable tool, a brush and a detection instrument are carried. The overall structure of the petroleum pipeline cleaning and detecting robot is annular, the influence of the robot on the flow of fluid of a pipeline caused when the robot worksin the pipeline can be effectively lowered, the efficiency of cleaning and detecting the pipeline is improved, and the petroleum pipeline cleaning and detecting robot has the advantages of being reasonable in structure, high in working efficiency and strong in practicability.

The invention discloses a garbage collection and processing equipment for lake and river channel treatment. The garbage collection and processing equipment includes floating plates and cross beams, the two ends of the cross beams are both connected with the floating plates, the bottoms of the floating plates are connected with counterweight net barrels, and load-bearing floating plates are connected to the ends, far away from the cross beams, of the bottoms of the floating plates. When an impeller rotates, garbage in water is turned upwards, the garbage can be attached to the side faces of a net frame, and subsequent collection is facilitated. The garbage on the side face of the net frame can be scraped away by a net plate, the garbage can be treated in time, and meanwhile, the net frame can conduct normal filtering without being blocked. During rotation of the net plate, several cutting blades on the side face of the net plate cut and crush the garbage, the size of the garbage is reduced, transportation of the net plate and storage of a storage box are facilitated, and the occupied space is saved. The width of the river channel or the lake surface is too large, multiple interception devices can be installed according to the actual situation, the multiple cross beams can be used in cooperation to improve the garbage removing efficiency, and dead spots for cleaning are not proneto being left.

A cartridge (card) having a system of microchannels and / or microcavities is used for automated DNA or protein analysis, wherein said microchannels or microcavities comprise geometrical structures for receiving dry reagents. For the purpose of industrial production, the cartridge is produced from a flat card support, e.g., by injection moulding. The reagents are spotted into the open channels, dried and then the channels are sealed by means of a film. A finished cartridge can thus be provided with a test sample and the fully automated measuring sequence can be initiated by inserting said cartridge into a read-out device.

High-perturbance underwater masonry mortar is prepared from, by mass, 50 parts of special rapid hardening cement, 220 parts of Portland cement, 15 parts of resin rubber powder, 675-685 parts of natural medium sand, 30-40 parts of an anti-perturbance additive and 40-50 parts of waterborne epoxy resin. The anti-perturbance additive is prepared from, by mass, 1-5 parts of silica powder, 2-5 parts of hydroxypropyl methylcellulose, 0.5-1 part of a super plasticizer, 5-8 parts of a thixotropic agent, 5-8 parts of special rapid hardening cement, 12-15 parts of a flocculating agent and 5-8 parts of an early strength agent. By adding the special rapid hardening cement, the underwear initial setting time of the mortar is short; by adding the waterborne epoxy resin and the silica powder, the surface of the mortar has high affinity, and the mortar is suitable for underwater repair. The high-perturbance underwater masonry mortar is reasonable in formula and convenient to prepare and use, and has the advantages of being not likely to disperse, easy to construct, capable of normally hardening underwater, high in strength and the like in work with water.

The invention discloses an application of a rice combined type drilling sowing belt in rice germplasm resource sowing. The application comprises the following steps that after soil preparation, the rice combined type drilling sowing belt is directly pressed into a prepared rice field by using a sowing machine, and then cultivation management is carried out in a rice breeding process; the rice combined type drilling sowing belt is formed by weaving through a seed weaving machine and is composed of a sowing belt A and a sowing belt B; the sowing belt A comprises a paper belt A and rice seeds wrapped inside the paper belt A; the sowing belt B comprises a paper belt B and a particle mixture wrapped inside the paper belt B; and the sowing belt A and the sowing belt B are combined in a homodromous rotating and winding mode. The combined type drilling sowing belt is specially used for the rice seeds and is applied to rice germplasm resource sowing, so that the problem that the rice materialsare various, the planting area is small, the sowing efficiency is low, and the worker cost is high in the field of rice breeding is solved.

The invention belongs to the technical field of soil conditioners, and discloses an irregular particle granulator for producing a soil conditioner. The irregular particle pelletizer for producing thesoil conditioner comprises a stirring box, wherein a dustproof cover I is fixedly connected to the upper surface of the stirring box and is positioned in the center; a first engine is fixedly connected into the first dustproof cover through a first supporting rod; a feeding pipe is fixedly communicated with the upper surface of the stirring box and located on the left side of the first dustproof cover, the output end of the first engine is fixedly connected with the top end of a first transmission rod through a first coupler, and the bottom end of the first transmission rod is movably connected with a first bearing in a through hole in the center of the bottom wall through the center of the top wall of the stirring box. According to the irregular particle granulator for producing the soilconditioner, the rectangular blades are used and obliquely placed, and the rectangular blades are placed according to different angles, so that the irregular particle size of the soil conditioner during granulation is ensured, and the soil conditioner can be prevented from being washed away by water flow in subsequent use.

The invention discloses a rainwater collection and reutilization device for a greening lawn. The rainwater collection and reutilization device comprises a box body; the end face of the box body communicates with a water storage tank, and a stone layer, an activated carbon layer, a gauze layer and an ultrafiltration membrane are sequentially mounted in the box body from top to bottom; the lower end of the water storage tank communicates with a water feeding pipe, and a one-way valve is mounted on the water feeding pipe; the lower end of the water feeding pipe communicates with a buffering box body, and one end of the buffering box body communicates with a water discharging pipe; the tail end of the water discharging pipe communicates with a piston pipe, and an L-shaped bent pipe is connected to the piston pipe, penetrates through the box body, and is provided with a pressure increasing valve; and a spray head is mounted at the end, away from the box body, of the L-shaped bent pipe. The rainwater collection and reutilization device has the advantages that the functions of seepage, filtration, storage, drainage and the like are achieved, the rainwater runoff speed is decreased, rainwater downward seepage and filtration are effectively improved, the utilization rate of rainwater is increased, circulation of natural rainfall, surface water and underground water is coordinated, environment microclimates can further be improved, the municipal drainage pressure is reduced, and the engineering construction cost is saved.

The invention provides a protein immunogold labeling method for a cryoelectron microscope. The protein immunogold labeling method comprises the following steps of (1) respectively pretreating a grid of the frozen electron microscope by utilizing a poly-L-lysine solution and PBS (Phosphate Buffer Solution); (2) putting the grid in a culture dish with the front surface facing upwards, dripping a sample onto the grid, standing, incubating, and eluting with PBS (Phosphate Buffer Solution); 3) adding a sealing agent into the culture dish, standing, incubating, and eluting with PBS; 4) adding a primary antibody, namely a specific antibody of the target protein, into the culture dish, standing, incubating, and eluting with PBS; 5) adding a secondary antibody, namely an immune gold antibody selected according to the species of the primary antibody, into the culture dish, standing, incubating, and eluting with PBS; and 6) taking out the grid, imaging by using a freezing electron microscope, andanalyzing image data to obtain a target protein structure. The method is advantaged in that an immunolabelled protein technology and a freezing electron microscope tomography technology are combined,so the target protein is observed in the freezing electron microscope imaging, and the structure is analyzed at the same time.

The invention provides a ditching and reshaping integrated machine for new agriculture. The machine comprises a diesel engine and an adjusting frame which are fixedly connected to the upper part of one side of a walking machine frame in sequence, wherein a double-sided plough is fixedly connected to the lower part of the adjusting frame; a material groove is fixedly connected to the upper part ofthe middle of the walking machine frame; a soil feeding mechanism and a reshaping mechanism are connected to the lower part of the walking machine frame in a rotary manner in sequence; and a driving wheel is connected to the bottom of the diesel engine in a driven manner. By arranging a blanking pipe to extend from the outer side of reshaping plates to the inner side of the reshaping plates all the time, the blanking pipe and the reshaping plates are connected in a flange mode, linkage teeth further rotate along with the reshaping plates, gears further uniformly introduce fertilizers in the material groove into the reshaping plates, and when the reshaping plates rotate, inner guide teeth give centrifugal force to fertilizer particles, so as to enable the fertilizer to be thrown out of thereshaping teeth all the time by the centrifugal force through penetrating holes, and to be fused with the soil surface reshaped by outer reshaping teeth, and thus the purpose of fertilizing ditches and ridges is achieved, and higher integration degree of the device is achieved.

The invention discloses a rinsing device capable of reducing sinking degree for extracting a water-soluble protein of minced fillet in the technical field of fish protein extraction, comprising a material collecting funnel. The top of an inner cavity of the material collecting funnel is fixedly connected with a filter box through a spring; the bottom of the inner cavity of the filter box is sequentially provided with a filter screen and filter cloth from bottom to top; a vibrating device is arranged at the bottom of the inner cavity of the filter box; and a dispersing device is arranged at the top of the inner cavity of the filter box. The device blocks rinsed water flow through a partition plate, drains the water through a through hole, guides and disperses the rinsed water flow, prevents the situation that the rinsed water flow is concentrated in one area and the area of the filter cloth is subjected to large impact force, avoids the situation that the filter cloth is sunken due to impact of rinsing water flow, reduces the situation that surimi penetrates through the filter cloth in the rinsing process, reduces the procedure of post-treatment of water containing water-soluble protein, protects the filter screen and the filter cloth, and improves the using effect of the dispersing device.

The invention provides a shoe sole cleaner. The shoe sole cleaner comprises an upper layer and a lower layer, wherein a support net is arranged at the upper layer, shoes are placed on the support net,a fixing plate is arranged above the support net, space for placing the shoes is reserved in the middle of the fixing plate, baffle plates are arranged on two sides of the fixing plate, and springs are arranged between the baffle plates and the edge of the cleaner; the lower layer is provided with an air pump, the air pump is connected with an air gun through an air pipe, two ends of the air gunare connected to guide rails on two sides through sliders, the middle part of the air gun sleeves a lead screw, and one end of the lead screw is provided with a motor for driving the lead screw to rotate; the air gun is provided with a flat opening; and a button is arranged on the shoe sole cleaner for controlling the on-off state of the air pump and the motor. Compared with the prior art, the shoe sole cleaner has the advantages that the shoe sole cleaner can automatically clean the shoe soles, due to the adoption of the air gun cleaning method, the shoe soles are very clean, due to the design of the springs, the baffle plates and the fixing plate of the upper layer, the shoes can be automatically fixed, and thus the shoes can not be washed away.

The invention relates to the field of riverbed sediment detection, in particular to a sampling device for riverbed sediment detection, which comprises a shell, an inclined plate, a rotating motor, a rotating rod, a first chain wheel, a second chain wheel, a chain and an auxiliary sampling part, so that sediment sampled by the device is fine sediment, and meanwhile, the sediment sampling work is facilitated. Particularly, when hard silt or small gravels are touched, the hard silt or small gravels can be removed and turning can be performed, so that when the device moves forwards, the silt on the riverbed can be shoveled into the second cavity more easily by the inclined plate; therefore, sampled silt is stored in the second cavity and cannot be washed away by water flow.

The invention provides a remote sensing water body water level monitoring device, which belongs to the technical field of water body monitoring, and includes a base, a support frame plate 1, a support frame plate 2, a support frame plate 3, detection equipment, a water delivery pipe, a solar panel, a damping block, and a fixed frame , clamping mechanism and underwater fixing mechanism; the present invention can ensure that the whole monitoring device will not be washed away by the water flow by setting the underwater fixing device; by setting the damping block, it can realize automatic reset when the device is dumped, and the damping block can pass through the sliding seat and the sliding Block 2 realizes detachable connection with the base, which is convenient for the installation, replacement and maintenance of the damping block; by setting the clamping mechanism, it can adapt to solar panels of different sizes, and the clamping mechanism and the solar panel adopt a detachable connection method, It is convenient to replace and maintain the solar cell panel; a small amount of water accumulated between the fixed frame and the solar cell panel can flow out by opening a diversion groove on the fixed frame to effectively protect the solar cell panel components.

The invention relates to the technical field of dredging, and discloses a river dredging robot. The river dredging robot comprises a vehicle body, a placing mechanism is rotatably arranged in the center of the bottom of the vehicle body and used for storing broken stones and laying the broken stones, a compacting mechanism is arranged at the other end of the bottom of the vehicle body and used forcompacting the laid broken stones, and a cone crusher is fixedly installed in the vehicle body and used for crushing stones. Large stones fall into the cone crusher to be crushed, a storage plate rotates to pour the stored broken stones out to a riverbed, and meanwhile a walking mechanism is controlled to move at a constant speed, so that the broken stones are evenly spread on the riverbed; meanwhile, underwater stones can be classified, smashed and reused, so that the riverbed is prevented from being blocked again; and meanwhile, the step of transporting the stones to the water surface is omitted, the bottom of the riverbed is flattened, the liquidity of water flow is improved, and the situation that soil is washed away again by the water flow is also avoided.

A shoe sole cleaner comprises an upper layer and a lower layer, wherein a supporting net is arranged on the upper layer, and a shoe is placed on the supporting net; a sponge plate is arranged above the supporting net, a space for containing the shoe is reserved in the middle of the sponge plate, and baffles are arranged on the two sides of the sponge plate; springs are arranged between the bafflesand the edge of the cleaner; an air pump is arranged on the lower layer, and the air pump is connected with an air gun through an air pipe; the two ends of the air gun are connected to guide rails onthe two sides through sliding blocks, and a lead screw is sleeved with the middle of the air gun; one end of the lead screw is provided with a motor to drive the lead screw to rotate, and the air gunis provided with a flat-shaped opening; a button is arranged on the shoe sole cleaner and used for controlling the on-off state of the air pump and the motor. Compared with the prior art, the shoe sole can be automatically cleaned, and the shoe sole can be clean through the air gun; due to the design of the upper layer spring baffles and the sponge plate, the shoe can be automatically fixed so that the shoe cannot be washed away.

The invention provides an aeration sewage treatment device. The aeration sewage treatment device comprises a submerged microporous aeration unit and a microbiological treatment unit. The submerged microporous aeration unit comprises a blower, a base and a plurality of microporous aeration pipes, wherein the blower is connected with the microporous aeration pipes through connecting pipes, and the microporous aeration pipes are fixed to the base in parallel. The microbiological treatment unit is arranged on the downstream of the microporous aeration unit, and comprises a frame and perforated partition plates in the frame, wherein the frame is composed of perforated baffles, the perforated partition plates divide the interior space of the frame into a filter unit and biological aerobic units,the filter unit and the biological aerobic units are filled with filter filler and biological aerobic filler respectively, and the filter unit is located on the upstream of the biological aerobic units. The dissolved oxygen concentration of outlet water after treatment by the device reaches 3 mg / L to 8 mg / L, the ammonia nitrogen removal rate reaches 80% or above, the turbidity is reduced by 70% or above, the outlet water can be directly discharged into a natural or artificial water body, and the sewage treatment efficiency is effectively improved.

The invention discloses a connecting structure used between overwater floating plates. The connecting structure comprises a concrete surface, wherein the lower end of the concrete surface is fixedly provided with sub air bag protection plates; reinforcement installing plates are fixedly arranged at the lower ends of the sub air bag protection plates; support connecting frames are fixedly arrangedbetween the sub air bag protection plates and the concrete surface; a sub air bag is fixedly arranged at the lower end of each sub air bag protection plate; connection support blocks are fixedly arranged at one end of the concrete surface; a main air bag protection plate is movably arranged at one end, far away from the concrete surface, of the connection support block; connecting arms are movablyarranged at the outer side of the main air bag protection plate; the connecting arms and the connection support blocks are mutually connected; and main air bags are movably arranged in the main air bag protection plate. The connecting structure used between the overwater floating plates has the advantages that the hidden danger of extrusion deformation risk is eliminated; the erection of a floating bridge can be simpler; and the structure is more reasonable.

The invention discloses an attachment type shellfish breeding equipment and breeding method in the sea area, which belongs to the technical field of aquaculture breeding. It is a multi-layer stepped cone member whose height does not exceed the length of the bottom side, and a fixed ring protrudes from the top of the cone. The invention also provides a method for increasing breeding by using the attachment type shellfish breeding equipment in sea areas. The invention solves the technical difficulty of bottom sowing of attached shellfish, can achieve fixed-point and accurate feeding, seedlings will not be washed away by ocean currents, and the materials used are easy to obtain and easy to operate.

The embodiment of the invention discloses a method, a device and a system for loading a field programmable gate array. A cache region is arranged to judge whether the data volume stored by the cache region is within a preset range or not, if yes, the incomplete filled indication of the data volume stored by the cache region is sent to a processor to indicate the processor to continuously transmit data so as to continuously acquire data transmitted through a data bus by the processor, and if not, the to-be-filled indication of the data volume stored by the cache region is sent to the processor to indicate the processor to stop transmitting data. Not only is the reliability of the loading data ensured not to carry away data, but also the fast loading is achieved to avoid the loading gap. Furthermore, data of multiple periods is transmitted through a data bus, and a feedback signal read by an indication signal triggering processor is sent again, so that the method for loading is configured more flexibly, the device for loading is more optimized, and the loading performance of the system for loading the whole field programmable gate array is improved.

The invention discloses a design method of a submerged plant planting device, the device at least comprises a cup-shaped plant cultivation container which is made from a degradable material, and a plurality of small holes are formed in the bottom of the container. A plant is cultivated in the cup-shaped plant cultivation container, the roots of the plant grow outside the container through the small holes in the bottom, during transplanting, the container is directly pressed into sludge at the bottom of a river or lake, the plant adheres to the sludge along the growth of the roots, the container degrades with time, the plant grows fulling at the bottom of the river or lake, and planting of the submerged plant is completed.

The invention discloses a vascular stent cleaning device for cardiovascular medicine, which belongs to the field of vascular stent cleaning. A vascular stent cleaning device for cardiovascular medicine, comprising a cleaning main body, a cleaning member is slidably connected in the cleaning main body, a rotating plate is rotatably connected to the upper end of the cleaning member, and a plurality of sets of placement grooves are arranged on the cleaning member. The side of the rotating plate close to the placement slot is provided with a second chute, and a clamping plate is slidably connected in the second chute, the clamping plate is matched with the placement slot, and the second chute is connected with a clamping plate. The first spring; in the present invention, it is convenient to fix the bracket through the cleaning piece, the placing groove, the drain pipe, the clamping plate and the rotating plate, and it is convenient to wash away the impurities, and it is convenient to send the water into the placing groove through the driving pump and the main water pipe. Inside, the bracket is rotated through the worm, worm wheel, connecting shaft and rotating wheel, so that the cleaning is more thorough.

The invention discloses an ecological floating bed applied to industrial polluted water area. The ecological floating bed comprises a bottom shell, wherein the top of the bottom shell is provided withan upper cover, the upper cover is fixedly connected with the bottom shell through a fixing piece, both sides of the upper cover are welded with a fixing ear 1 adapted to the fixing piece, and both sides of the bottom shell are welded with a fixing ear 2 adapted to the fixing piece. According to the invention, activated carbon and limestone are placed in the inner cavity of the bottom shell, so as to adsorb and neutralize the polluted waste water at the same time, thereby purifying the polluted waters, so that that function of purifying the water area can be continuously played, the assemblyof the user is convenient, and the working efficiency of the user is improved, the arrangement of the bottom shell and the upper cover ensures that the activated carbon and limestone are not washed away by the water flow, therefore, the ecological floating bed applied to the industrial polluted water area and the use method have the advantages of continuously purifying water quality, being fixed in one position and being convenient to assemble.

The invention discloses a method for efficiently preparing chiral boride based on a mobile phase, and belongs to the technical field of organic synthesis. Comprising the following steps: S1, adding alpha, beta unsaturated ketone, bis (pinacolato) diboron and a ligand into toluene, and dissolving to obtain a mixed solution; and S2, filling a microchannel reactor with a cellulose-loaded Cu2O / TiO2 catalyst, continuously introducing distilled water and the mixed solution obtained in the step S1 into the microchannel reactor, carrying out an asymmetric boronation reaction, collecting a product, and carrying out separation and purification to obtain the chiral boride. According to the invention, TiO2 is added into the catalytic material, so that the amount and the stability of copper loaded on cellulose are improved, and the loaded copper is ensured not to be washed away in a mobile phase; toluene is used as an additive, and alpha, beta unsaturated ketone, bis (pinacolato) diboron and a ligand are pre-dissolved by using toluene; under the combined action of the two aspects, the non-boron-forming addition reaction of the alpha and beta unsaturated ketones can be completed in the mobile phase.

The invention provides a torrent rescue system and a ship body moving and reversing device thereof. The torrent rescue system comprises a rescue ship, the ship body moving and reversing device and a rope traction device. The ship body moving and reversing device comprises a deck clamp, a bracket, a steering friction adjusting rod, a fixed seat, an operating rod and a guide plate, the bracket is mounted at one end of the deck clamp; the steering friction adjusting rod is mounted on the bracket, one end of the steering friction adjusting rod is provided with a fixed seat, and the other end of the steering friction adjusting rod is provided with a guide plate; one end of the operating rod is mounted on the fixed seat, and the other end extends into a cabin of the rescue boat; a rudder in the cabin adjusts the impact angle between the flow guide plate and the water flow by operating the operating rod; the rope traction device is installed on a river bank and connected with the rescue boat through a traction rope. The system is simple in structure and convenient to operate and use, the moving speed and distance of the rescue boat in the torrent water area can be accurately controlled, the rescue boat is effectively prevented from being washed away or overturned in torrent rescue, and the life safety of rescue workers is guaranteed.

The present invention relates to a compact container which comprises an inner container for accommodating a cosmetic material therein and a discharge means for discharging the cosmetic material accommodated in the inner container, and which has a discharge plate integrally injection molded by inserting a sponge thereto, the compact container enabling an even distribution of the discharged cosmeticmaterial due to the sponge being in close contact with the discharge plate perfectly without moving, as the discharge plate and the sponge are integrally molded by means of insert injection molding by injection molding the discharge plate by inserting the sponge thereto. In addition, while the discharge plate and the sponge are integrally insert injection molded, a dish part in the shape of a small groove is formed at the center of the discharge plate so that the discharge plate and the sponge are spaced a certain distance apart from each other, and a joining part is formed on the outside ofthe dish part so that the discharge plate and the sponge are joined without a gap by means of insert injection molding, and, thus, the discharge plate and the sponge are in close contact by means of the joining part so that the sponge is not swept away when washed directly in running water. The present invention provides the compact container having the discharge plate integrally injection moldedby inserting the sponge thereto, the compact container comprising: the inner container for accommodating the cosmetic material therein; the discharge means for discharging the cosmetic material accommodated in the inner container; and the discharge plate formed to be adjacent to the discharge means and having a discharge outlet, wherein the discharge plate has the sponge integrally molded by meansof insert injection molding so that the sponge is attached to the discharge plate without moving.

The invention discloses a method for preparing nano MgO sustained-release sterilizing granules. The method comprises the following steps of: 1) dissolving Fat-soluble chitosan in an aqueous solution of acetic acid to obtain a chitosan solution; 2) preparing an aqueous solution of sodium alga acid, and adding nano MgO powder to obtain a nano MgO turbid solution; 3) dripping the nano MgO turbid solution into the chitosan solution, stirring the reaction liquid for half an hour, and removing the liquid to obtain milky microspheres; 4) washing the obtained milky microspheres with distilled water; and 5) drying the microspheres to obtain the yellow nano MgO sustained-release sterilizing granules. The method has the advantages that: 1) raw materials such as sodium alga acid, chitosan and the like are wide in sources, low in prices, safe and nontoxic; 2) a gel is introduced, so that the nano MgO can be immobilized on a carrier and cannot be washed away by current; 3) through a sustained-release system, the pH of the system can be stabilized in an acceptable range; and 4) an operating process of reaction is simple, reaction conditions are easy to control, and the method is suitable for industrial production.

The invention discloses a special weeding and fertilizing device based on rhubarb planting and its high-yield cultivation method, which belongs to the technical field of medicinal material planting. The device includes a frame on which a fertilizer system and a weeding system are installed. The fertilizer system includes a fertilizer box and fertilization pipe, the weeding system includes a weeder and a medicine box, and a control armrest is provided on the fertilizer box or the frame; the frame is also provided with a fuel tank and a traveling wheel; the fuel tank provides electric energy by burning fuel, It is also connected to the weeder, the traveling wheel, the fertilizer box and the fertilizing pipe through electric wires; an excavator is also provided; a backfill scraper is also arranged on the weeding and fertilizing device, and the bottom surface of the backfill scraper is kept parallel to the bottom of the traveling wheel. By designing a device that can realize weeding and fertilization in an integrated manner, and optimizing and upgrading the mechanisms of weeding and fertilizing respectively, it can adapt to the requirements of rhubarb planting, and then provide a high-yield cultivation method based on this equipment.