154 results about "Mulch" patented technology

A method of creating a wetland in a remote arid location includes identifying or establishing a channel of flowing water at the arid location, and installing therein a mat containing seeds, and / or seedlings, and a super absorbent polymer (SAP). Water is applied to the SAP, such that both edible and dam-constructing vegetation grows and matures from the mat. Beavers are then dropped into the arid location by parachute in containers that open upon landing. The beavers eat the edible vegetation and use the dam-constructing vegetation to construct at least one dam across the channel of flowing water, thereby forming a wetland that further encourages both the vegetation and the beavers to propagate. A perforated, transparent or translucent cover sheet can be placed on or suspended above the mat. A water barrier can be placed below the mat. The wetland vegetation cools and humidifies the environment by transpiration of water.

The invention discloses a soil moisture content inversion and determination method based on a remote sensing image, particularly relates to the technical field of surveying and mapping and remote sensing measurement, and is used for solving the problems of space-time inconsistency, system deviation and result non-traceability caused by superposition of a mulching film and a salt shell in spring and tide in an existing saline-alkali area. Under a meter-scale unified grid and a unified radiation and time caliber, three types of interferences of coating, salt crust and phase are extracted as conditional quantities, equivalent bare land processing is completed according to the sequence of phase normalization, coating correction and salt crust correction, then the volumetric moisture content is calculated in a monotonicity controlled model, the stable monotonicity relation between pixel observation and the moisture content is recovered, and the monotonicity controlled model is obtained. The system error caused by the difference between the non-bare ground and the imaging time phase is resolved from the source. Through pre-seasonal and in-seasonal verification, the overall deviation is remarkably reduced, the water content error is kept at a low level, judgment jitter caused by post-rain transient and a high tide window is effectively inhibited by a stabilization strategy, and the engineering precision and consistency requirements of coastal zone spring film covering and salt returning periods can be met.

A mulch may include a hydrophilic cellulose layer and hydrophobic top layer formed on the cellulose layer. The cellulose layer and top layer together may form a wettability gradient which facilitates directional water transport from the hydrophobic top layer to the hydrophilic cellulose layer. A surface of the hydrophobic top layer is optically opaque and exhibits a solar reflectance of 85% to 98% in response to incident light the 250-2500 nm wavelength range. The mulch provides a mid-infrared emissivity of 0.85 to 0.97 in the 8-13 μm range. The solar reflectance and mid-infrared emissivity decrease underlying soil temperature by at least 2° C. compared to uncovered soil under equivalent solar conditions.

The invention provides a method for preventing and controlling nitrogen and phosphorus loss of sandy and dry cultivated land based on EICP root reinforcement and relates to the field of soil ecological protection and agricultural pollution prevention and control. According to the method, a three-dimensional prevention and control system is formed from the two dimensions of surface layer film covering protection and deep root system soil fixation through the synergistic effect of EICP film covering and local plant root system three-dimensional reinforcement, wind erosion and water erosion are effectively resisted, the soil nitrogen and phosphorus loss rate of the large-gradient sandy and dry cultivated land is remarkably reduced, and meanwhile the soil desertification process is slowed down; the EICP film covering layer has good water permeability and moisture retention, nitrogen and phosphorus loss can be prevented, rainfall infiltration and soil moisture conservation can be guaranteed, and the germination rate and the growth speed of crops are increased; according to the method, local crop root system reinforcement is selected, the original planting structure is not disturbed, the economic benefit of cultivated land yield per mu is guaranteed, a harmless means of combining microorganisms, geotechnical engineering and agricultural planting is adopted, external pollution sources are not introduced, original basic characteristics of soil are not damaged, and the requirement for ecological protection of the Yellow River basin is met.

The invention relates to the technical field of mineral resource mining and mineral separation, and discloses a barite ore open-pit mining harmless mineral separation novel process which comprises the following steps: S1, adopting an open-pit mining mode, stripping surface coverings, and collecting barite raw ore; s2, raw ore primary washing and separation, specifically, the collected raw ore is washed with water, barite rough ore and primary tailings are separated out, and the primary tailings comprise ore washing muddy water and slag; s3, the ore washing muddy water generated in S2 is separated into coarse particle materials and fine muddy water in a physical separation mode, the coarse particle materials and the fine muddy water are 50 meshes or above, according to the novel barite ore open-pit mining harmless beneficiation technology, through all-component separation and resource utilization of tailings, a traditional tailing treatment mode is thoroughly changed, the ore washing muddy water generated by primary washing of raw ore is recycled, and the ore washing muddy water generated by secondary washing of the raw ore is recycled. Through physical separation, reselection and solid-liquid separation processes, fine sand products, soil backfill materials and process reuse water can be obtained through conversion, and no slurry waste residues exist.

The application discloses a kind of based on selective spectral regulation agricultural photoelectric conversion film synthesis method and application, belong to the cross field of agricultural technology and new energy.It is quantum dot as core spectral selective absorption material in the synthesis method, by the standardization steps of substrate pretreatment, transparent electrode preparation, photoelectric conversion layer coating, quantum dot layer integration, back electrode evaporation and packaging, the functional film comprising "substrate-transparent electrode-photoelectric conversion layer-quantum dot spectral selective absorption layer-back electrode" is prepared.The quantum dot layer can efficiently absorb the ultraviolet light, green light and near-infrared light with low photosynthesis utilization rate of plant, and energy is transferred to photoelectric conversion layer to realize power generation;At the same time, the transmittance of blue light and red light necessary for plants is greater than or equal to 85%.The synthesis process of the application has strong compatibility and high repeatability, solves the contradiction between power generation and planting in traditional "agri-photovoltaic", realizes light energy hierarchical utilization and agri-photovoltaic synergy, and can be widely applied to greenhouse, greenhouse, plant factory and other agricultural facilities cover.

This invention discloses a controlled-release solid film formulation for pesticides, its preparation method, and its applications. This invention upgrades pesticides from liquid / powder formulations to solid film formulations, utilizing the solid film to physically block pesticide drift, diffusion, and loss, reducing off-target effects at the source. Through the combined use of physical and chemical techniques, pesticides are uniformly distributed within the solid film, and the pesticide release cycle is synchronized with the solid film degradation, achieving precise controlled release. This solid film formulation is applied from the beginning of crop growth, synchronized with the plant growth cycle, providing early preventative effects through quantitative controlled release of pesticides. This solid film formulation also functions as a mulch film; its preparation process is simple and easy, it is completely degradable and requires no recycling, reducing costs. The identification method of this invention utilizes selective precipitation separation technology, achieving high pesticide extraction efficiency of 95%-98%, especially suitable for low water-soluble pesticides. The drug identification process is simple to operate: the entire process takes less than 4 hours, requires no complex purification steps, and is suitable for batch sample processing.

The invention relates to the technical field of haloxylon ammodendron forest rejuvenation in an arid region, in particular to a degenerated haloxylon ammodendron forest stumping, updating and rejuvenating method which comprises the following steps: (1) performing stumping treatment on target plants from late February to mid-March in early spring; (2) applying a composite modifier within 1-3 days after stumping; (3) carrying out periodic moisture regulation and control within 1-2 days after the composite modifier is applied; and (4) after the water regulation is finished, covering the base part of the plant with a mixed covering. The method solves the problem that in the prior art, only rejuvenation of the overground part is emphasized, but the health of the underground root system is neglected, the apparent quality of the haloxylon ammodendron forest can be improved, and the long-term stress resistance and ecological adaptive capacity of plants are remarkably improved.

This invention discloses a potato mulching planter, comprising a frame and a transmission mechanism. The frame is connected to a tractor via a three-point suspension. The frame is equipped with a rotary tillage and ridging device, a fertilization and pesticide application device, a pipe-laying and mulching device, a seed metering device, and a seed-planting device. The rotary tillage and ridging device includes a rotary tillage component and a ridging component. The fertilization and pesticide application device has a fertilizer pipe positioned in the middle of the rotary tillage component, which delivers fertilizer into the soil layer in the middle of the ridge. The pipe-laying and mulching device lays drip irrigation pipes and film on the ridge. The seed metering device has a seed metering component that sequentially feeds potato seeds into a duckbill-type seed-planting cylinder. The transmission mechanism drives the connecting rod assembly and the duckbill-type seed-planting cylinder to swing back and forth. The duckbill-type seed-planting cylinder pierces the film for seeding. This invention adopts a planting method of first covering the soil with film and then planting in holes on the film. This equipment integrates multiple functions such as rotary tillage, ridging, pesticide application, fertilization, pipe laying, mulching, seeding, and soil covering, greatly improving the efficiency of potato planting.

This invention discloses a simplified method for orchard ground cover, mulching, and mechanized precision sowing and fertilization, comprising: dividing the orchard ground into inter-row work zones and tree basin protection zones; using a seed-fertilizer co-sowing device to create strip-shaped furrows in the inter-row work zones, forming deep trenches and shallow sowing zones; applying controlled-release fertilizer to the deep trenches and sowing complementary mixed grass seeds in the shallow sowing zones; when the height of the composite surface vegetation community reaches the preset mowing height, performing mowing operations and transferring the mowed herbaceous biomass to the tree basin protection zone to form a mulch layer; measuring the mass of the herbaceous biomass transferred to the tree basin protection zone, calculating the nitrogen supplementation amount according to a preset nutrient compensation coefficient, and applying liquid nitrogen fertilizer to the inter-row work zones and tree basin protection zones. This invention enables integrated and coordinated management of orchard ground cover, sowing, fertilization, mulching, and nitrogen supplementation, improving the orchard's year-round ground cover capacity and mechanized operation efficiency.

The invention discloses a method for synergistically improving drought tolerance of Chinese chestnut plants through earth surface vegetation coverage and chemical regulation and control, and belongs to the technical field of agricultural cultivation. According to the method, the drought-enduring grass seeds with shallow root systems are planted between the Chinese chestnut rows and form layered water utilization with the deep-root Chinese chestnuts, so that water and nutrients competed by herbaceous plants and the Chinese chestnuts are reduced; the ultrahigh grass layer is cut and then covers the rhizosphere of the Chinese chestnuts, biological covering soil moisture conservation is achieved, stress of drought to the Chinese chestnuts is reduced, then the composite drought-resistant agent is applied, abscisic acid in the composite drought-resistant agent can induce pore closing, chitosan can enhance the cell membrane stability, polyaspartic acid can promote water absorption of root systems, and the drought resistance of the Chinese chestnuts is improved. The three components synergistically improve the drought resistance of the Chinese chestnuts, meanwhile, the grass layer mowing period and the compound drought-resistant agent spraying period are staggered from the water demand critical period of the Chinese chestnuts, long-acting drought resistance of the Chinese chestnuts is achieved, negative influences on growth of the Chinese chestnuts and the soil environment are avoided, finally, the irrigation amount is reduced by 50% or above under the moderate drought condition of the Chinese chestnuts, and the yield is increased by 18-25%; the obvious ecological and economic benefits are realized.

The application discloses a kind of tread-resistant organic covering garden roads and its manufacturing method, by composite organic covering layer, leveling layer, cushion layer, waterproof layer, waterproof protective layer and drainage ditch composition;The prepared organic covering garden road has higher compactness and tread-resistant ability, increases the mildew-proof, fireproof, windproof ability of organic covering garden road, greatly improves the service life and safety of organic covering garden road, also has the effect of keeping moisture, adsorbing dust, adjusting soil temperature, increasing soil fertility, inhibiting weeds, promoting planting growth, reducing soil erosion and decoration beauty etc.

This invention relates to the field of agricultural rain shelter technology and discloses a sawtooth-shaped rain shelter, comprising multiple transverse structural units (2) arranged longitudinally at intervals, longitudinal connectors (3) connecting adjacent transverse structural units (2), and a covering. Each transverse structural unit (2) includes at least two uprights (1), an intermediate connector (25) suspended between adjacent uprights (1), an upper gentle slope component (21), an upper steep slope component (22), a lower gentle slope component (23), and a lower steep slope component (24). The lower end of the intermediate connector (25) is spaced apart from the ground or foundation and its spatial position is defined by the four slope components; the covering covers the upper steep slope component (22) and the lower steep slope component (24) to form a rain-draining covering surface. This structure can be used for rain protection and ventilation in agricultural planting scenarios.

The invention belongs to the technical field of fruit tree cultivation and management, and particularly relates to a pre-stepped saline-alkali domestication saline-alkali soil grape seedling field planting method which comprises the following steps: S1, preparing saline-alkali simulation solutions with three concentration gradients of 2g / L, 4g / L and 6g / L according to soil saline-alkali types; s2, before field planting, carrying out stepped saline-alkaline domestication on grape seedlings growing in the culture medium in a stress-recovery alternating mode, and adding 10-50 [mu] M of ABA into 6g / L saline-alkaline simulation liquid for common treatment; s3, after domestication is completed, the domesticated nursery stocks are subjected to field planting on ridges, drip irrigation and film mulching for soil moisture conservation, and management is carried out according to conventional cultivation standards. Through the technical combination of saline-alkali simulated liquid gradient intermittent domestication, exogenous hormone regulation and control combination and the like, the field planting method remarkably improves the field planting survival rate of the grape seedlings in the saline-alkali soil, and is particularly suitable for high-survival-rate field planting and early-stage standardized management of grapes under the medium-high saline-alkali soil condition.

The invention relates to pond digging and fertilizer applying equipment before tobacco seedling transplanting, in particular to a synchronous pond digging and fertilizer distributing method which comprises the following steps that a pond digging device and a fertilizer distributing device which are connected with each other synchronously move on a rack, and when the pond digging device conducts a pond digging program track along ridges, the fertilizer distributing device synchronously fertilizes pond holes formed in the ridges. The invention further provides a synchronous pond digging and fertilizer distributing device which comprises a machine frame, a pond digging device and a fertilizer distributing device, the pond digging device and the fertilizer distributing device are movably arranged on the machine frame, and the pond digging device and the fertilizer distributing device synchronously move on the machine frame through a connecting piece. The pond digging device and the fertilizer distributing device are connected and can work cooperatively, the fertilizer distributing device synchronously fertilizes pond holes which are dug before while the pond digging device digs the pond holes, and due to the fact that the pond digging device and the fertilizer distributing device are connected and matched with each other, the pond digging precision and the fertilizer distributing precision can be guaranteed at the same time in the using process; continuous and efficient pond digging and fertilizer distribution operation is facilitated, and the tobacco seedling transplanting quality is improved.

The application relates to the technical field of bio-organic fertilizer, and discloses a green manure preparation method for resource utilization of garden greening pruning residual branches, which comprises the following steps: collecting herbaceous and woody mixed residual branches generated by pruning common greening plants in a garden and carrying out raw material pretreatment; according to seasonal temperature differences, adopting a zoned temperature control fermentation strategy, in the low-temperature season, the fermentation temperature is maintained through active heating and heat preservation, in the normal-temperature and high-temperature seasons, the temperature is adjusted through turning over and covering, so that the fermentation process is completed within one month; during the fermentation process, specific auxiliary materials are added, and the water content and the carbon-nitrogen ratio are regulated, so that rapid composting is promoted and the generation of peculiar smell is inhibited; finally, short-term aging is carried out to obtain the finished product. The application guarantees that the obtained green manure meets the requirements of stable composting and harmlessness.

The application provides a precision seeding device and method, which comprises a rack, a mulching assembly arranged on the rack and comprising a pay-off roller part and a transmission roller part, the pay-off roller part being capable of forming a mulch and conveying the mulch to the transmission roller part, a motor disc assembly connected to the transmission roller part and driving intermittent rotation of the transmission roller part, a seeding transmission assembly arranged at the middle part of the rack and located at the front side of the transmission roller part, a connecting rod transmission assembly connected between the motor disc assembly and the seeding transmission assembly, and a seeding assembly arranged at the rear end of the seeding transmission assembly. The application can improve the seeding efficiency and reduce seed damage in the seeding process.

The utility model relates to the technical field of edible mushroom planting, and discloses a covering spreading device for edible mushroom planting, which comprises a treatment box, a treatment chamber is arranged in the treatment box, a feeding hopper is fixedly mounted at the top of the treatment box, a material cleaning part is arranged in the treatment chamber, and a material spraying part is arranged in the treatment chamber. The cleaning part comprises a rotating rod movably mounted in the treatment chamber, three groups of stirring frames are fixedly mounted on the surface of the rotating rod, the stirring frames are arranged in an annular array shape, a second motor is fixedly mounted on the left side of the treatment box, and by mounting the treatment box, the treatment chamber, an electric heating plate, a dust discharge fan, the rotating rod, the stirring frames, a beating plate and other devices, the material cleaning part can be used for cleaning materials. The device has the advantages that the covering laying efficiency is high, the use cost of human resources is reduced, meanwhile, the dryness of the covering can be guaranteed, the situation that the part of the covering is not dry due to weather is avoided, the device further has the efficient treatment effect, and impurities attached to covering raw materials are removed.

The invention provides a high and steep slope soil aggregate modifier based on a carbon component and a preparation method thereof, and belongs to the field of soil improvement and ecological restoration, and the modifier comprises the following raw materials: a granular organic carbon source, a mineral binding organic carbon source, a nanometer and microbial stabilizer and the like. A preparation method of the modifier comprises the following steps: mixing the humic acid, the leaf mold and the pine needle mulch, putting the mixture into a sodium hexametaphosphate solution, reacting, drying, and grinding to obtain the mineral bound organic carbon source; the preparation method comprises the following steps: uniformly mixing a granular organic carbon source, a mineral combined organic carbon source, nano CaCO3, a microbial stabilizer and the like, adding water, fermenting to obtain a fermentation product, drying, and crushing to obtain the modifier. According to the modifier, through the synergistic effect of multiple components, the ecological function of high and steep slope degraded soil is effectively recovered, the aggregate structure stability of the improved soil can be improved, and the long-term stability of aggregates and the organic carbon storage capacity are enhanced.

The invention relates to the technical field of agricultural engineering, in particular to an intelligent irrigation and salinity regulation and control integrated system for cotton saline-alkali soil improvement, which comprises a plurality of irrigation pipes, the irrigation pipes are communicated with a plurality of branch pipes, the irrigation pipes are further sleeved with a plurality of regulation devices, and each regulation device comprises a plurality of stages of support rods which are sleeved end to end; water inlets for allowing saline water to enter the supporting rods are formed in the positions, close to the bottom ends, in the supporting rods, and buoyancy unfolding mechanisms for driving the next-stage supporting rods to be vertically unfolded through saline water injection are arranged in the supporting rods; a conversion assembly used for switching the drainage hole diameter of the branch pipe according to the lifting height of the supporting rod is arranged between the irrigation pipe and the last-stage supporting rod. Buoyancy expansion mechanisms of the multi-stage supporting rods in the adjusting device are linked with the conversion assemblies to automatically switch the drainage hole diameters of the branch pipes, and in combination with real-time sensing and dynamic strategies of the irrigation regulation and control system, full-period automatic salt regulation and control and precise irrigation of cotton saline-alkali soil in winter, uniform spreading and icing of saline water and salt return prevention of under-mulch drip irrigation in spring are achieved.

The invention relates to the field of landscape engineering, and discloses a long-acting low-maintenance flower bed landscape building method which comprises the following steps: S1, preparing a self-repairing bionic concrete composite material; s2, the composite material prepared in the step S1 is adopted for prefabricating or cast-in-place casting of the boundary of the flower bed structure; s3, electric response type microcapsules are preset on the inner side of the boundary of the flower bed structure; s4, a decorative covering is laid on the surface of the substrate; s5, judging whether the environment temperature is higher than the critical temperature or not after covering; and S6, if the judgment is true, microelectrochemically triggering the electric response type microcapsule, directionally releasing the high-viscosity polymerizing agent, and adjusting the local stress of the boundary of the flower bed structure. A biological mineralizing agent microcapsule is embedded into the structure to realize self-repairing of microcracks, and piezoelectric composite fibers are used for monitoring stress in real time and triggering a polymerizing agent to adjust the stress, so that the effects of full-range self-healing and preventive maintenance of the flower bed structure from micro-damage to stress concentration are achieved.

The invention discloses a high-capacity intelligent remediation device and method for saline-alkali soil remediation, and relates to the technical field of soil remediation. The high-capacity intelligent remediation device for saline-alkali soil remediation comprises a frame, a material roll is installed at one end of the frame, a hole opening piece is installed in the middle of the frame, a suction pipe group is placed between two side plates, the side face of each desalting suction pipe is slidably connected with a pneumatic crystal removal device, and the pneumatic crystal removal devices are used for cleaning salt crystal particles. The pneumatic spraying and sucking device is used for blowing the pneumatic crystal removal device under the action of wind power and collecting salt crystal particles when the pneumatic crystal removal device falls down. According to the high-capacity intelligent remediation device and method for saline-alkali soil remediation, the vehicle body moves according to the preset distance, mulching film laying, drilling, suction pipe group insertion and control over communication or sealing of an annular plate and a pneumatic crystal removal device are sequentially completed, and cleaning and collecting work of salt crystal particles on the side faces of desalting suction pipes in one suction pipe group is automatically completed.

The invention discloses a porous corn straw degradable film and a preparation method thereof, and belongs to the technical field of plastic films. The film is prepared from the following raw materials in parts by weight: 85-87 parts of polyadipic acid / butylene terephthalate (PBAT), 1-3 parts of polylactic acid (PLA), 5-10 parts of corn straw powder, 3-5 parts of polypropylene carbonate (PPC), 5-10 parts of starch, 3-5 parts of talcum powder and 1-3 parts of sodium bicarbonate. The preparation method comprises the following steps: drying and mixing the raw materials, carrying out melt blending in a double-screw internal mixer, carrying out granulation, and carrying out blow molding on the obtained master batch to prepare the film. The preparation method is characterized in that sodium bicarbonate is decomposed to release carbon dioxide gas during film blowing and heating, a uniform microporous structure is formed in a film matrix, and the decomposed product sodium carbonate plays a reinforcing role at the same time. The corn straw, the PPC, the starch and the talcum powder are added to generate a synergistic effect with a PBAT / PLA matrix, so that the mechanical property, the barrier property and the ultraviolet shielding function of the film are remarkably improved on the premise of ensuring complete biodegradability. The film has the advantages of being low in cost, uniform in pore structure, good in mechanical property, low in water vapor permeability, good in heat preservation effect and the like, and is an environment-friendly agricultural mulching film material with great application potential.

The invention relates to a device (2) for harvesting stalky stem crops, comprising a supporting frame (4) and a plurality of picking units (6) arranged next to one another, such as, for example, a corn header. The picking units (6) are covered by covering hoods (6). In order to keep the crop losses in the transition region between the covering hoods (6) and the conveying devices (14) low, the invention proposes that the outwardly pointing surfaces of the wear protection strips (26) have a flexible material with a material hardness in the range of 60 – 100 Shore A.

An apparatus for weed removal includes a chassis and at least two end effectors mechanically coupled to the chassis, each end effectors including a rotary axle, each rotary axle coupled to a drive unit for receiving a mechanical force to cause the rotary axle to rotate. The rotary axles, along with weed abrasion members coupled thereto, are at least partially covered by a deflector. A front end effector is configured to dislodge a crown and / or stem portion of unwanted plant material from the ground, while another end effector is configured to convert the unwanted plant material that has been dislodged from the ground into mulch.

Multi-layer biodegradable mulch films include a top layer that is sunlight / UV resistant, and a bottom layer designed to withstand soil moisture and / or pH effects. The films have an extended service life, followed by a rapid degradation. Specific masterbatches are formulated to prepare the different film layers. Carbon black having specific properties can be incorporated in at least some of these masterbatches.

In conventional soil filling devices, the soil is compacted by vertical vibration, and the soil is randomly filled into the seedling pad without any consideration of the size distribution of the crushed pieces of soil filled into the seedling pots, and attention is paid only to filling efficiently. [Solution] The mixed pulverized fragments that freely fall from the mulch supply tray and maintain a constant balance ratio are repeatedly and violently collided with both side walls of the seedling pots by a horizontal reciprocating vibration device that applies horizontal vibrations, compacting and tightly filling the mulch. In this case, the mixed pulverized fragments that are violently vibrated in the horizontal direction (lateral direction) perpendicular to the direction of gravity are less likely to separate into large, medium and small sizes than when filled with vertical vibrations.

The utility model relates to the technical field of agricultural film laminating machines, in particular to an agricultural film laminating machine with an automatic adjusting function, which comprises a first support and a second support, and the front end faces of the first support and the second support are fixedly connected with a fixing frame. The front end face of the first support and the front end face of the second support are slidably connected with a sliding frame symmetrical to the fixed frame, and film guide rollers are installed on the opposite sides of the fixed frame and the sliding frame. An adjusting mechanism is arranged between the fixed frame and the sliding frame, so that the sliding frame drives the second baffle to move towards one end far away from the fixed frame, the outer wall of the film covering cylinder is sleeved with a film covering roller wound with a film from the right end of the film covering cylinder, and then the sliding frame moves towards the fixed frame according to the width of the film covering roller; furthermore, flexible adjustment can be realized according to the width of the film covering roller, and meanwhile, the film covering roller can be conveniently sleeved on the outer wall of the film covering cylinder.