315 results about "Mulch" patented technology

A gutter cover system has a reverse-curve cover and clips, fastened to fascia, that secure the back edge of the cover. The front of the cover has an S shape with a convex upper part and a concave lower part. The lower part clips inside the upper front edge of the gutter. The cover is corrugated with fore-aft extending ridges and grooves. The corrugations create small triangular openings for water to enter the gutter while preventing small leaves and evergreen needles from entering the gutter.

A drying implement may include a first portion having a diatomaceous earth slab and a resilient slab covering, and a second portion that is coupled to the first panel. The resilient slab covering may include a mesh of openings that allow water from an article placed on the resilient slab covering to drip through the mesh of openings, onto the diatomaceous earth slab. The second panel may include a plurality of cross pieces that are overmolded with a resilient second covering.

A vapor collection system that can be used at an extra-terrestrial body is envisioned to collect target gaseous atoms and molecules (material) floating around in a shielded environment at a pressure at or less than a bar. The shielded environment is defined within a cover and skirt arrangement that rests atop granular soil, which in one embodiment is regolith. It is advantageous for the regolith under the cover to be essentially devoid of loose rocks that would reduce mining efficacy and / or the cover from sealing against the regolith surface. Accordingly, certain embodiments envision mining the regolith with a zero tailings arrangement that uses a front plow to clear away loose rocks from where the cover will rest on the regolith and a redeposition blade to collect and redeposit the cleared away loose rocks behind the cover.

The invention relates to a method for rapidly cultivating big seedlings of pinus thunbergii and pinus densiflora, which comprises the following steps: fully mixing coco coir, turfy soil and decomposed pine needle mulch according to the mass ratio of 7: 2: 1 to form a rooting substrate; uniformly spraying a 800-fold carbendazim solution on the rooting substrate, fully sterilizing, and then fully spraying a rooting agent on the rooting substrate and uniformly stirring; the method comprises the following steps: selecting a robust plant, cutting back a rotation branch at the lower part of a layering part, keeping 20-30cm, selecting a pinus thunbergii branch according to the specification of a high-altitude layering propagation device, and removing pine needles on the branch on which the layering propagation device is to be placed; keeping the rooting substrate moist; cultivating for about three months, transplanting the branches with root systems into a container, and performing seedling cultivation management. According to the method, seedlings and matrix preparation are optimized, it is ensured that the seedlings grow in the optimal environment, and the survival rate and quality of the seedlings are improved.

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 relates to the technical field of polymer degradable materials, in particular to a biodegradable material as well as a preparation method and application thereof. The material takes modified polylactic acid as a main body, and an antioxidant, a plasticizer, a flame retardant and an inorganic filler are used as auxiliary materials in parts by weight. The method is characterized in that lactic acid and an epicatechin imidazole ammonium chloride polymer are polymerized under the catalysis of stannous octoate, and an epicatechin bioactive group is introduced into a polylactic acid main chain in a chemical bonding manner, so that the biodegradation rate, the mechanical property and the thermal stability of the material are remarkably improved. Bioactive substances and ionic groups in the material promote microbial degradation, and the material can be completely decomposed in a compost environment in a short time; meanwhile, the strength, the toughness and the high-temperature processability of the polylactic acid are effectively improved through molecular-level enhancement and an ionic cross-linking effect. The material can be widely applied to the fields of disposable tableware, food packaging films, degradable agricultural mulching films and the like.

The invention discloses a biodegradable mulching film degradation period prediction system and method based on machine learning, and belongs to the technical field of biodegrading.The system comprises an information acquisition module used for acquiring soil property data and mulching film data of preset soil, building a database based on soil properties, distinguishing the soil properties and determining the mulching film degradation period of the preset soil; the LSTM network data acquisition module is used for acquiring the position of a region where preset soil is located; and the LSTM network data acquisition module responds to the soil property data acquired by the information acquisition module and is used for acquiring characteristic data of soil properties of a region where preset soil is located and distinguishing the acquired soil property characteristic data. Compared with the prior art, the degradation change of the mulching film under various property data conditions can be better obtained by utilizing a machine deep learning analysis technology and analyzing and dividing soil data, so that the change of related data can be more accurately predicted in a future time period, and the degradation trend of the mulching film can be predicted.

A bulk handling system for collecting, loading, transporting and dumping of yard waste and landscape materials such as grass clippings, yard debris, soil, mulch, stone and other dry and / or wet substances. The functions for controlling and operating the mechanical bulk handling system include a titling lift platform for filling and dumping and a gate that when open acts as a lift to move materials into the bulk container and when closed functions as a closed door. In addition to the bulk container operating in a horizontal position for transporting, which uses virtually no floor space on the platform and / or vehicle selected for use, it can also be angled downward for filling and elevated for dumping and emptying. For filling, the gate end of bulk container and lift frame can be lowered closer to the ground from a vehicle for easier and more efficient loading by an operator.

The invention provides a non-uniform underlying surface soil hydrothermal salt migration and crop growth coupling simulation method, which comprises the following steps: constructing a two-dimensional soil hydrothermal salt migration model considering a partial film non-uniform underlying surface and crop growth, and setting initial conditions and boundary conditions of operation of the two-dimensional soil hydrothermal salt migration model; and connecting overground crop growth and underground soil hydrothermal salt migration through root system water absorption and soil hydrothermal salt stress, solving a two-dimensional soil hydrothermal salt migration model according to input soil information, meteorological data, crop growth data and required parameters, and obtaining hydrothermal salt distribution characteristics and crop growth indexes on a soil two-dimensional section at a specified moment. On the basis of a traditional two-dimensional soil hydrothermal salt migration model, the influence of crop root system water absorption dynamic change, crop canopy coverage and mulching film temperature increasing and soil moisture conservation effects on soil hydrothermal salt migration is considered, and the method is more suitable for simulation of hydrothermal salt migration and crop growth processes in under-mulch drip irrigation farmland salinized soil.

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.

Soil conduits are constructed between tree pits in an urban environment. These soil conduits extend upward to the surface, are covered by grates, and are permeable to allow the seepage of water and nutrients to tree roots in the tree pits. The soil conduits include, from the surface moving downward, mulch, horticultural soil, a fabric barrier, and crushed stone. The horticultural soil is inoculated with mycorrhizal fungus that creates fungal networks between the roots of various trees, communicating water and nutrients between the roots of the connected trees. These fungal networks increase the health, carbon dioxide consumption and oxygen production of urban trees. Various planting schemes could be employed such as using trees and bushes to create a common mycorrhizal network (CMN) which is associated with arbuscular mycorrhizae (AM), using plants that associate with ectomycorrhizae (ECM), or using plants associated with both types of fungus networks.

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 discloses an easily degradable modified agricultural mulching film and a preparation method thereof, and relates to the field of high polymer materials. When the easily degradable modified agricultural mulching film is prepared, oyster shell powder sequentially reacts with 3-bromopropyltrimethoxysilane, 4-methylpyridine, 5-(7-bromobenzo [C] [1, 2, 5] thiadiazole-4-yl) thiophene-2-formaldehyde and 4-(diphenylamine) phenylboronic acid pinacol ester, and functionalized oyster shell powder is prepared; and reacting urea with formaldehyde, reacting with monopotassium phosphate and chitosan, mixing with the functionalized oyster shell powder, performing injection molding, and drying to obtain the easily degradable modified agricultural mulching film. The easily-degradable modified agricultural mulching film prepared by the invention has good mechanical properties and capabilities of resisting bacteria, performing photocatalytic degradation, adjusting the pH value of soil and degrading the soil into fertilizers.

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 discloses a direct seeding cultivation method for facility cardamine violifolia, and belongs to the technical field of cardamine violifolia planting. Comprising the following steps: (1) soil preparation, fertilization and ridging; (2) after the seeds are pretreated, the pretreated seeds are uniformly mixed with a seedling culture medium, the seed use amount is 40-60g per 667m < 2 >, and the use amount of the seedling culture medium is 200-250L; after broadcast sowing, covering a seedling substrate, laying a sprinkling irrigation belt, and covering a mulching film; (3) performing thinning, water and fertilizer management, temperature management and pest control in a seedling stage; 4, harvesting is started 50-60 days after the flowering phase. According to the direct sowing cultivation method of the cardamine violifolia, the cardamine violifolia seeds and the seedling raising substrate are mixed and then directly sown, the steps of seedling raising and transplanting are omitted, manpower resources are greatly saved, the planting cost is reduced, the germination rate is high, the yield is high, and a new cultivation method is provided for artificial cultivation of the cardamine violifolia.

The invention discloses an environmental response type degradable bionic composite membrane and a preparation method thereof, the composite membrane is formed by alternately stacking hydrophobic layers and hydrophilic layers, the hydrophobic layers are PHA / PBS (3: 1-5: 1) blends and added with 2-8 wt% of oleic acid grafted nano-hydroxyapatite, and the hydrophilic layers are modified starch / PVA composite materials with the crosslinking degree of 15-35% and contain 0.5-3 wt% of thermo-sensitive PNIPAM-b-PAA. Mechanical interlocking is realized between layers through a lotus leaf-like micro-nano mastoid structure (the height is 1-5 microns, and the density is 106-107 / cm < 2 >) treated by plasma; micro gravure coating, electrostatic spraying and blade coating processes are adopted for preparation, and the controllable degradation period of 30-180 days can be achieved by regulating and controlling the layer thickness ratio (1: 2-3: 1); the degradation rate of the material in the pH range of 5.5-8.5 is positively correlated with the pH value (R2 is greater than 0.95), the degradation rate is increased by 8-12% when the temperature is increased by 1 DEG C, the degradation rate is greater than 90% in 20-50 days under the composting condition, the degradation product is ecologically safe (LC50 is greater than 1000mg / kg), and the material is suitable for intelligent agricultural mulching films and environment-friendly packaging.

The invention discloses a corn and soybean strip-shaped composite planting method, and belongs to the technical field of agricultural planting. Comprising the following steps: step 1, preparing land: crushing the soil by using mechanical equipment, and uniformly releasing a nitrogen-phosphorus fertilizer into the dry land; 2, ridging and film mulching are conducted, after land preparation is completed, ridging is conducted, the ridge width is 160 cm, the ditch width is 60 cm, and the ridge height is 20 cm; a biodegradable weeding mulching film is selected as the mulching film; step 3, sowing management: corn sowing operation is carried out in late May, soybean sowing operation is carried out in mid-late June, and a planting mode is corn and soybean intercropping planting; the corn is planted on the ridge edge, and the soybean is planted on the ridge; 4, harvesting management, wherein harvesting is conducted after the corn and the soybeans are mature. The mulching film is covered with a biodegradable weeding mulching film; in the composite planting process, a continuous weeding barrier can be formed, weed growth is remarkably inhibited, and the defects of mechanical weeding and chemical weeding in the prior art can be overcome.

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.

The invention discloses a fruit and vegetable greenhouse automatic heat preservation and shading device and a heat preservation planting method.The fruit and vegetable greenhouse automatic heat preservation and shading device comprises an outer-layer greenhouse body and an inner-layer greenhouse body, the outer-layer greenhouse body is externally provided with a transparent greenhouse body, the inner-layer greenhouse body is located on the inner side of the outer-layer greenhouse body, a spacing layer is formed between the outer-layer greenhouse body and the inner-layer greenhouse body, and an air layer is formed in the spacing layer; the outer side of the outer-layer greenhouse body is insulated from the inner side of the inner-layer greenhouse body. By adopting the double-layer greenhouse body structure, double-layer heat preservation of the greenhouse body can be achieved, and the outer-layer greenhouse body is a light-transmitting greenhouse body and is usually a greenhouse body built by a transparent film or transparent glass. The inner-layer greenhouse body is a non-transparent heat preservation greenhouse body, a covering object of the inner-layer greenhouse body is a flexible shielding piece, and good heat preservation and shading effects are achieved. The inner-layer greenhouse body and the outer-layer greenhouse body can jointly form a heat preservation effect, and the spacing layer between the two layers of greenhouse bodies forms an air layer, so that external low temperature is effectively isolated, and the temperature in the greenhouse is kept stable.

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.

To facilitate seeding planting even in a farmland where soil is hard in a configuration equipped with a mulch sheet releasing and laying mechanism.SOLUTION: A transplanter includes a travelling machine body, a planting part liftably connected to the rear part of the travelling machine body, and a mulch sheet releasing and laying mechanism for releasing and laying a mulch sheet on the surface of soil. The planting part includes a seedling planting mechanism for planting seedlings in the soil from above the mulch sheet. The transplanter includes an under-sheet action body for making a groove for planting seedlings in the soil under the mulch sheet before planting the seedlings accompanying the travelling of the travelling machine body.SELECTED DRAWING: Figure 6

The invention relates to a system for storing rainwater (12) accumulating in particular on a soil cover (10) in a retention space (11) for later reuse, wherein a region of the superstructure of the soil cover (10) is designed to create a water-bearing level below a covering layer (13) of the soil cover (10) in order to guide the accumulating rainwater (12) to the retention space (11), and wherein the system is designed to supply the water stored in the retention space (11) to the water-bearing level as needed in order to evaporate it there.

The present application relates to the technical field of recycling agricultural waste PE materials, and in particular to a carbon-fixing aggregate made of wire mesh shells fired from high-waste PE materials and a preparation method thereof. The preparation method comprises the following steps: S1, pre-treating the collected PE materials; S2, carbon-fixing treatment of pumice to obtain carbon-fixing pumice; S3, preparing powdered adsorption pumice; S4, high-temperature calcination to form a wire mesh shell skeleton; S5, post-treatment. The present application provides a carbon-fixing aggregate made of wire mesh shells fired from high-waste PE materials and a preparation method thereof, which solves the problems of permeable concrete being susceptible to water erosion and poor aggregate carbon-fixing and sealing effects, and at the same time, comprehensively and effectively recycles waste agricultural mulch and drip irrigation tapes.

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.