Wind disaster prevention and loss reduction treatment method suitable for plastic film arched shed

Abstract

The invention relates to the technical field of disaster prevention and loss reduction of agricultural facilities, and particularly discloses a wind disaster prevention and loss reduction treatment method suitable for a plastic film arched shed, different treatment measures are taken according to forecast wind power, and when the forecast wind power is smaller than or equal to 10 levels, a plastic film arched shed covering material is adjusted to be in a totally closed state; when the forecast wind power is larger than 10 levels, the covering material on the outer side of the plastic film arched shed is detached, a low and small arched shed is built in a seedling vegetable planting area in the shed, and the low and small arched shed is completely closed through the detached covering material; the arch frame of the arched shed can be kept complete in structure in typhoon and strong wind, the maintenance cost is reduced, crops in the plastic film arched shed are protected by arranging the low and small arched shed, the wind resistance of the low and small arched shed is small, the crops in the shed can be effectively protected, the windproof requirement is met, the shed film is easy and fast to mount and dismount, the working efficiency is high, and after typhoon and strong wind pass, the shed film is not damaged. Production can be quickly recovered, and the effects of stable production, supply guarantee and loss reduction are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of disaster prevention and loss reduction in agricultural facilities, and specifically discloses a treatment method for preventing wind disasters and reducing losses suitable for plastic film arch greenhouses. Background Art

[0002] As an important part of protected agriculture, plastic film arch greenhouses play a very important role in alleviating the contradiction between the supply and demand of vegetables, and have significant social and economic benefits. Due to the low construction cost and good production effect of plastic film arch greenhouses, they are widely used in various fields such as horticultural crop cultivation and seedling raising, and occupy a dominant position in production. However, at present, typhoons and strong winds occur frequently in coastal areas and other places, resulting in problems existing in plastic film arch greenhouses when facing typhoons and strong winds gradually emerging, such as the collapse of the greenhouse structure, the lifting of the foundation, the rupture of the greenhouse film, crop losses, etc., which have a very adverse impact on production, seriously restricting sustainable development. There is an urgent need to propose a protection measure for plastic film arch greenhouses to prevent disasters and reduce losses to meet the development needs of modern agriculture.

[0003] Therefore, how to combine plastic film arch greenhouses, according to the local climate characteristics, through low-cost solution measures, not only improve work efficiency, but also ensure the structural safety and stability of plastic film arch greenhouses and effectively reduce the losses of plastic film arch greenhouses caused by typhoons and strong winds passing through has become a key issue that needs to be solved urgently for plastic film arch greenhouses in coastal areas and other places, which is related to vegetable supply guarantee and social safety development. Summary of the Invention

[0004] In order to solve the problems such as the collapse of the greenhouse structure, the lifting of the foundation, the rupture of the greenhouse film, and crop losses of plastic film arch greenhouses in the prior art when typhoons and strong winds come, the present invention provides a treatment method for preventing wind disasters and reducing losses suitable for plastic film arch greenhouses, which can not only keep the structure intact, reduce the maintenance cost, but also reduce the risk of disasters occurring, and the arch greenhouses taking disaster prevention measures can quickly resume production, avoid production interruption caused by disasters, and reduce the direct losses of planted crops.

[0005] The present invention provides a treatment method for preventing wind disasters and reducing losses suitable for plastic film arch greenhouses. First, obtain the predicted wind force data, and then take different treatment measures according to the predicted wind force. When the predicted wind force ≤ 10 levels, adjust the covering material of the plastic film arch greenhouse to a fully enclosed state before the typhoon and strong wind come; When the predicted wind force > 10 levels and there are no crops planted in the plastic film arch greenhouse, disassemble the covering material outside the plastic film arch greenhouse before the typhoon and strong wind come; When the predicted wind force > 10 levels and there are crops planted in the plastic film arch greenhouse, disassemble the covering material outside the plastic film arch greenhouse before the typhoon and strong wind come, and set up a low and small arch greenhouse in the seedling and vegetable planting area, and completely enclose the low and small arch greenhouse with the covering material.

[0006] The predicted wind force data can be obtained in various ways, such as by checking the typhoon and strong wind paths and wind force magnitudes through weather forecasts or meteorological bureaus, and determining the handling methods according to the wind force magnitudes after issuing the warning levels. For example, the blue warning is for a wind force ≥ 8 levels, the yellow warning is for a wind force ≥ 10 levels, and the red warning is for a wind force ≥ 12 levels.

[0007] The covering material includes a shed film covering the plastic film arch shed or the low and small arch shed, and a sunshade net covering above the shed film.

[0008] In some embodiments of the present invention, after adjusting the plastic film arch shed to a fully enclosed state, weights are used to compact it around. The specific method is: lower the shed film so that it completely encloses the entire plastic film arch shed including the longitudinal two ends, and after covering with an external sunshade net, use weights to compact around the plastic film arch shed.

[0009] The shed film can use various applicable materials in the art. In the present invention, the shed film uses a PE plastic material with good toughness.

[0010] More specifically, when the predicted wind force ≤ 10 levels, the shed film and the sunshade net are covered on the outside of the plastic film arch shed in sequence from the inside out, so that the shed film and the sunshade net completely enclose the plastic film arch shed. In the present invention, external film pressing lines are used to tightly connect the shed film and the sunshade net with the arch frame of the plastic film arch shed; Lower the shed film at the longitudinal two ends of the plastic film arch shed to ensure that the plastic film arch shed including the longitudinal two ends is completely enclosed. Subsequently, cover the sunshade net with a suitable size specification on the outside of the shed film, fix the shed film and the sunshade net near the ground around the plastic film arch shed, and use weights to compact.

[0011] Preferably, when the predicted wind force ≤ 10 levels, check the roof arch frame structure and connection node parts of the plastic film arch shed to ensure that they are not damaged, loose or deformed. If there are problems such as corrosion, cracks, bending deformation, etc. in the roof arch frame of the plastic film arch shed or loosening, deformation, etc. in the connection node parts, handle them. After ensuring the structural safety of the plastic film arch shed, then completely enclose the plastic film arch shed.

[0012] Preferably, the basic components of the plastic film arch shed include an arch frame and a tie rod connecting the arch frames, a diagonal brace obliquely connecting and fixing the arch frames, a column vertically supporting the plastic film arch shed, side support columns on both lateral sides of the plastic film arch shed, and a card slot longitudinally extending and connecting each arch frame provided on both lateral sides of the plastic film arch shed; the column includes a shed head column at the longitudinal two ends of the plastic film arch shed and an in - shed column inside.

[0013] When the predicted wind force is > 10 levels, remove the covering materials of the plastic film arch shed, and only retain the basic components of the plastic film arch shed to avoid wind and reduce losses. This can effectively reduce the stress area of the plastic film arch shed and ensure the overall safety of the structure. After removing the covering materials, when there are crops planted in the shed, set up low and small arch sheds near the ground in the seedling vegetable planting area to protect the planted crops in the seedling vegetable planting area.

[0014] The low and small arch shed is divided according to the size and span of the seedling vegetable planting area in the plastic film arch shed, and prepare the small arch frames and covering materials of the low and small arch shed with corresponding spans, or do not prepare the covering materials of the low and small arch shed in advance, and directly use the covering materials of the plastic film arch shed for covering during installation.

[0015] Preferably, when the predicted wind force is > 10 levels and there are crops planted in the plastic film arch shed, set up the small arch frames of the low and small arch shed at least two days before the typhoon or strong wind arrives. After completing the construction of the small arch frames, then cover the small arch frames with shed films and sunshade nets.

[0016] More preferably, at least one day before the typhoon or strong wind arrives, cover the shed film and sunshade net on the low and small arch shed in sequence from the inside out, so that the shed film and sunshade net completely enclose the low and small arch shed, and the longitudinal ends of the low and small arch shed are also completely enclosed by the shed film and sunshade net. Seal and fix it by compacting with soil or other counterweights on the ground, and at least compact with counterweights around the low and small arch shed.

[0017] When the low and small arch shed and the plastic film arch shed need to be compacted with counterweights around, counterweights with a certain weight such as sandbags can be used to compact around the low and small arch shed and the plastic film arch shed to ensure that the peripheries of the low and small arch shed and the plastic film arch shed are completely compacted, and adjust the low and small arch shed and the plastic film arch shed to a completely sealed state.

[0018] When the typhoon or strong wind passes and there is precipitation, the adhesion force and friction force of the sunshade net and the shed film are increased under the action of water, improving the windproof performance, solving the problem of poor windproof performance of the shed film, enhancing the ability of wind prevention and disaster avoidance, effectively reducing the water vapor pressure on the surface of the shed film, and prolonging the service life of the film.

[0019] Alternatively, in addition to using shed films and sunshade nets with size specifications specifically suitable for low and small arch sheds, the covering materials removed from the plastic film arch shed can also be directly used to cover the low and small arch shed. If the covering materials removed from the plastic film arch shed are used to cover the low and small arch shed, they can be directly covered, or can be cut and processed to make them correspond to the low and small arch shed.

[0020] The covering materials of the low and short small arch shed and the plastic film arch shed both include a shed film and a sunshade net. The shed film covers the small arch frame of the low and short small arch shed or the arch frame of the plastic film arch shed, and the sunshade net covers the shed film. If the covering material of the low and short small arch shed alone is used or the covering material of the plastic film arch shed is cut and used as the covering material of the low and short small arch shed, the shed film and sunshade net covered on the low and short small arch shed shall be correspondingly adapted to the size and specifications of the corresponding low and short small arch shed. If the covering material of the plastic film arch shed is directly used as the covering material of the low and short small arch shed without cutting, their sizes may not be adapted, and the part of the covering material exceeding the low and short small arch shed can be compacted with a counterweight.

[0021] Preferably, the low and short small arch shed includes a small arch frame, and its arrangement method is that the span of the small arch frame of the low and short small arch shed does not exceed 1.5 m, and the top height is 0.3 - 0.5 m. The small arch frame includes a cross arch frame and a single arch. Cross arch frames are arranged at both longitudinal ends of the low and short small arch shed, and a cross arch frame is arranged every 2 m between the cross arch frames at both longitudinal ends, and a single arch is arranged every 0.5 m in other parts between every two adjacent cross arch frames.

[0022] By arranging cross arch frames at both ends of the low and short small arch shed and arranging cross arch frames every 2 m between the two ends, the overall stability of the small arch frame of the low and short small arch shed can be increased.

[0023] The small arch frame of the low and short small arch shed selects arch frame materials with good toughness, such as bamboo, PVC plastic pipes, and thin steel bars.

[0024] Preferably, after a typhoon or strong wind passes by, remove the shed film and sunshade net on the plastic film arch shed or the low and short small arch shed and tidy them up. Check the plastic film arch shed, especially check important positions such as the arch frame and connection nodes. If there is damage, deal with it in time to restore the plastic film arch shed to its state before the typhoon or strong wind comes.

[0025] If the covering material of the plastic film arch shed is used as the covering material of the low and short small arch shed and the covering material is cut and then covered, new covering materials need to be replaced when restoring the state of the plastic film arch shed. If the covering material of the plastic film arch shed was directly covered on the low and short small arch shed without cutting in the previous treatment, the covering material of the low and short small arch shed can be directly restored above the plastic film arch shed.

[0026] By adopting the above treatment method, after a typhoon or strong wind, the plastic film arch shed can be quickly restored to production and put into use, minimizing the losses.

[0027] Preferably, a clamping groove is longitudinally arranged along the arch frame on the plastic film arch shed, and the shed film is fixed to the clamping groove through a clamping spring. When the shed film covers the clamping groove, the clamping spring is used to press the shed film inside the clamping groove. Adopting this fixing method can make the disassembly and installation of the shed film simple, fast, convenient and efficient.

[0028] In an embodiment of the present invention, the covering material of the small arched shed is directly covered without cutting, so that the area between the low small arched sheds and the ground is as flat as possible, and it can meet the use requirements by compacting the surroundings.

[0029] Compared with the plastic film arched shed that does not adopt the present disaster avoidance and loss reduction method, the treatment method for avoiding wind disasters and reducing losses suitable for plastic film arched sheds provided by the present invention has the following advantages: (1) When facing typhoons and strong winds, the arch frame of the plastic film arched shed can maintain its structural integrity, reduce the maintenance cost, and also reduce the risk of disasters; (2) When the wind force is ≥ 10 levels, the crops planted in the plastic film arched shed are protected by setting up low small arched sheds, and after the covering material is covered on the low small arched sheds, it is completely covered by counterweights compacted around. The wind resistance of the low small arched sheds is small, which can effectively protect the planted crops and meet the wind prevention requirements; (3) The plastic shed film and sunshade net are covered. During typhoons and strong winds, precipitation usually occurs. After encountering water, the adhesion between the shed film and the sunshade net will increase, enhancing the wind prevention and disaster avoidance ability of the arched shed and extending the service life of the film; Using counterweights to compact will make the arched shed have better airtightness and increase the wind resistance; (4) The method of fixing the shed film using card slots and snap rings can make the installation and disassembly of the shed film simpler and faster, and the shed film is tightly connected to the plastic film arched shed through external film pressing lines, which can improve work efficiency and is convenient and efficient; (5) After typhoons and strong winds pass by, the arched shed that has taken disaster avoidance measures can quickly resume production, avoid production interruption caused by disasters, reduce the direct loss of planted crops, improve the ability to cope with disasters, and achieve the effect of stable production, supply guarantee and loss reduction; (6) Establish a strategy for avoiding wind disasters and reducing losses based on weather forecast data and the presence or absence of crops in the shed, improve the scientific nature of disaster avoidance and loss reduction, and complement the method provided by the present invention to make up for the lack of wind prevention and disaster reduction technology. Brief Description of the Drawings

[0030] Figure 1 It is a schematic diagram of the normal production state of the plastic film arched shed; Figure 2 It is a schematic diagram after the covering material of the plastic film arched shed is disassembled; Figure 3 It is a schematic diagram of the internal small arch frame inserted after the covering material of the plastic film arched shed is disassembled; Figure 4 It is a schematic diagram after the internal small arch frame of the plastic film arched shed is covered with a shed film and a sunshade net; Figure 5 It is a cross-sectional view after the internal small arch frame of the plastic film arched shed is covered with a shed film and a sunshade net; Figure 6Schematic diagram after the plastic film arch shed is completely covered, and enlarged schematic diagram of installing the shed film with card slots and spring clips; Figure 7 It is Figure 3 Partial enlarged view of.

[0031] In the figure: 1 is the planting ground, 2 is the shed film, 3 is the sunshade net, 4 is the pull rod, 5 is the card slot, 6 is the shed head column, 7 is the inclined strut, 8 is the seedling vegetable planting area, 9 is the column inside the shed, 10 is the side support column, 11 is the cross arch frame, 12 is the small arch frame, 13 is the counterweight, 14 is the arch frame foundation, 15 is the spring clip. Specific implementation mode

[0032] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and detailedly described below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope protected by the present invention.

[0033] Figure 1 The figure shows a schematic diagram of a plastic film arch shed in a normal production state before the arrival of typhoons and strong winds, which includes basic components and covering materials. The basic components include an arch frame and a pull rod 4 connecting the arch frames. The arch frame and the pull rod 4 together form the skeleton main body of the plastic film arch shed. Arch frame foundations 14 are provided at both ends of the arch frame and at the bottom of the planting ground 1. It also includes shed head columns 6 at both longitudinal ends of the plastic film arch shed and columns 9 inside the shed, as well as inclined struts 7 that obliquely connect and fix the arch frames. Multiple groups of side support columns 10 are provided at both transverse ends inside the plastic film arch shed, and longitudinally extending card slots 5 connecting each arch frame are provided at both transverse sides of the plastic film arch shed; covering materials are provided outside the arch frame of the plastic film arch shed.

[0034] The covering materials include a shed film 2 covering the arch frame of the plastic film arch shed or the small arch frame 12 of a low and small arch shed, and a sunshade net 3 covering above the shed film 2.

[0035] In the above plastic film arch shed in a normal production state, when dealing with natural disasters such as typhoons and strong winds, problems such as the collapse of the shed body structure, the lifting of the foundation, the rupture of the shed film, and crop losses often occur, which seriously restricts the sustainable development of the facility industry. In response to this, the inventor proposes a method for preventing wind disasters and reducing losses suitable for plastic film arch sheds.

[0036] The shed film 2 can adopt various applicable materials in the art. In the present invention, the shed film 2 adopts a PE plastic material with good toughness.

[0037] In the following embodiments, two card slots 5 are respectively arranged on each of the two transverse sides of the plastic film greenhouse.

[0038] Example 1 Refer to Figure 1 、 Figure 6 , when the predicted wind force ≤ 10 levels, the following treatment methods are adopted to shelter the plastic film greenhouse from the wind and reduce disasters.

[0039] (1) Before the typhoon or strong wind comes, timely check the roof arch structure and connection node parts of the plastic film greenhouse to ensure that they are not damaged, loose or deformed. If there are damages such as rust, cracks, and bending deformation in the roof arch of the plastic film greenhouse or problems such as looseness and deformation in the connection node parts, deal with them.

[0040] (2) After ensuring the safety of the roof structure of the plastic film greenhouse, adjust the plastic film greenhouse to a fully enclosed state. The specific method is to install the shed film 2 of the corresponding size specification on the card slot 5 through the snap spring 15, and tightly connect the shed film 2 and the sunshade net 3 with the arch of the plastic film greenhouse through the external film pressing wire. As Figure 6 shown, when the shed film 2 covers the card slot 5, use the snap spring 15 to press the shed film 2 inside the card slot 5. Since the snap spring 15 has a certain elasticity, it can be pressed along the direction of the card slot 5 up and down to press the shed film 2 in turn.

[0041] After completing the fixation of the shed film 2, lower the shed film 2 at both longitudinal ends of the plastic film greenhouse to ensure that the plastic film greenhouse including both longitudinal ends is completely enclosed. Subsequently, cover the sunshade net 3 of the appropriate size specification on the outside of the shed film 2. At the near-ground part around the plastic film greenhouse, the sunshade net 3 can be fixed to the shed film 2 with ropes, and outside the sunshade net 3, it is fixed to the shed film 2 by the method of film pressing wire. The four sides of the plastic film greenhouse are compacted with counterweights. The size specification of the sunshade net 3 is adapted to the shed film 2, and at the same time, protective measures for node connection (such as welding reinforcement, rust prevention treatment, etc.) are taken.

[0042] When the shed film 2 of the plastic film greenhouse is fixed through the card slot 5, the snap spring 15 is used for fixation. This fixation method can make the installation and disassembly of the shed film 2 simple, fast, improve work efficiency, and be convenient and efficient.

[0043] (3) After the typhoon or strong wind passes by, ventilate and permeate the enclosed plastic film greenhouse in the first time, remove the fully enclosed covering materials on the plastic film greenhouse, and overhaul the basic components and their connection nodes of the plastic film greenhouse to restore it to the normal production state of the plastic film greenhouse before the typhoon or strong wind comes.

[0044] Example 2 Refer to Figure 1 and Figure 2When the predicted wind force is > 10 levels and there are no crops planted inside the plastic film arch shed, the following treatment methods are adopted to avoid wind and reduce disasters for the plastic film arch shed.

[0045] (1)For the plastic film arch shed with no crops planted in the internal seedling vegetable planting area 8, remove all the covering materials of the plastic film arch shed, namely the shed film 2 and the sunshade net 3, and only retain the basic components of the plastic film arch shed, which can effectively reduce the stress area of the arch shed and ensure the overall safety of the structure.

[0046] (2)Before the typhoon or strong wind makes landfall, timely check the roof arch frame structure and connection node parts of the plastic film arch shed to ensure that they are not damaged, loose or deformed. If there are damages such as rust, cracks, bending deformation in the roof arch frame of the plastic film arch shed or problems such as looseness and deformation in the connection node parts, handle them to avoid wind and reduce losses.

[0047] (3)After the typhoon or strong wind passes by, repair the basic components of the plastic film arch shed and their connection nodes, and restore the plastic film arch shed to its normal production state before the typhoon or strong wind arrives.

[0048] Example 3 refers to Figures 1-5 and Figure 7 When the predicted wind force is > 10 levels and there are crops planted inside the plastic film arch shed, the following treatment methods are adopted to avoid wind and reduce disasters for the plastic film arch shed.

[0049] (1)Remove the covering materials of the plastic film arch shed in the same method as in Example 2.

[0050] (2)Before the typhoon or strong wind arrives, timely check the roof arch frame structure and connection node parts of the plastic film arch shed to ensure that they are not damaged, loose or deformed. If there are damages such as rust, cracks, bending deformation in the roof arch frame of the plastic film arch shed or problems such as looseness and deformation in the connection node parts, handle them to avoid wind and reduce losses.

[0051] (3)Set up a low and small arch shed near the ground in the seedling vegetable planting area 8 at least two days before the typhoon or strong wind arrives to protect the crops inside the shed.

[0052] The low and small arch shed includes a small arch frame 12. The low and small arch shed built can be divided according to the size of the seedling vegetable planting area 8, and its span and top height can be adjusted according to the size of the seedling vegetable planting area 8 and the size of the crops planted in it. Preferably, the span of the small arch frame 12 of the low and small arch shed does not exceed 1.5 m, and the top height is 0.3 - 0.5 m. The small arch frame 12 includes a cross arch frame 11 and a single arch. Cross arch frames 11 are arranged at the front and rear ends of the low and small arch shed, and a cross arch frame 11 is arranged every 2 m between the cross arch frames 11 at the front and rear ends, and a single arch is arranged every 0.5 m in other parts between every two adjacent cross arch frames.

[0053] Since the crops in the plastic film arch shed are planted with seedling vegetables, very small and low arch sheds can protect the crops. The wind resistance of the low arch shed is small. After covering the covering material on the low arch shed, it can meet the wind protection requirements by compacting it with weights 13 around.

[0054] The single arch and the cross arch frame 11 in the small arch frame 12 can be directly inserted into the ground for fixation. It is not necessary to set a connection structure between the two. Without setting a connection structure, the purpose of fixation and wind protection can also be achieved. In this embodiment, the cross arch frame 11 and the single arch are separate components and are respectively inserted into the ground for fixation.

[0055] The small arch frame 12 of the low arch shed selects arch frame materials with good toughness, such as bamboo, PVC plastic pipes, thin steel bars, etc.

[0056] After the construction of the small arch frame is completed, the shed film 2 and the sunshade net 3 are then covered on the small arch frame.

[0057] (4)At least one day before the typhoon or strong wind comes, cover the shed film 2 on the small arch frame 12 of the low arch shed, and cover the sunshade net 3 on the shed film 2. At least use weights 13 around the low arch shed to compact the covering materials including the shed film 2 and the sunshade net 3, so that the low arch shed is in a completely enclosed state.

[0058] When weights 13 need to be used to compact around the low arch shed, objects of a certain weight can be used to compact around the low arch shed to ensure that the periphery of the low arch shed is completely compacted, so that the low arch shed is adjusted to a completely sealed state.

[0059] When it rains during the typhoon or strong wind, the sunshade net 3 and the shed film 2 can be closely attached due to the surface tension of water molecules. The adhesion between the two is increased under the action of water, solving the problem of poor wind resistance of the shed film 2, improving the ability of wind protection and disaster avoidance, effectively reducing the water vapor pressure on the surface of the shed film 2, and prolonging the service life of the film.

[0060] Different specifications of small arch frames 12 and covering materials can be prepared according to the size of the seedling vegetable planting area 8. The covering materials disassembled from the plastic film arch shed can also be cut or directly covered on the small arch frame 12 of the low arch shed without cutting. In this embodiment, the shed film 2 and the sunshade net 3 disassembled from the plastic film arch shed are directly used for covering the low arch shed without cutting.

[0061] (5)After the typhoon and strong wind pass by, ventilate the enclosed low arch shed immediately, disassemble the fully enclosed sunshade net 3 and shed film 2 on the low arch shed, then remove the small arch frame 12 of the low arch shed, and inspect the basic components and their connection nodes of the plastic film arch shed, and restore it to the normal production state of the plastic film arch shed before the typhoon and strong wind come.

[0062] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any equivalent replacement, modification, etc. made by those skilled in the art within the spirit and principle of the present invention without any creative labor shall be included within the protection scope of the present invention.

Claims

1. A treatment method for preventing wind disasters and reducing losses suitable for plastic film arch greenhouses, characterized in that: First, obtain the predicted wind force data, and then take different treatment measures according to the predicted wind force. When the predicted wind force ≤ 10 levels, adjust the covering material of the plastic film arch shed to a fully enclosed state before the typhoon and strong wind arrive; When the predicted wind force > 10 levels and there are no crops planted in the plastic film arch shed, remove the covering material on the outside of the plastic film arch shed before the typhoon and strong wind arrive; When the predicted wind force > 10 levels and there are crops planted in the plastic film arch shed, remove the covering material on the outside of the plastic film arch shed before the typhoon and strong wind arrive, set up a low small arch shed for the seedling vegetable planting area, and completely enclose the low small arch shed with the covering material; The covering material includes a shed film covering the plastic film arch shed or the low small arch shed, and a sunshade net covering above the shed film.

2. The treatment method for preventing wind disasters and reducing losses suitable for plastic film arch greenhouses according to claim 1, wherein: When the predicted wind force ≤ 10 levels, cover the shed film and the sunshade net on the outside of the plastic film arch shed from the inside out in sequence, so that the shed film and the sunshade net completely enclose the plastic film arch shed, and tightly connect the shed film and the sunshade net with the arch frame of the plastic film arch shed through external film-pressing lines; Put down the shed film at both longitudinal ends of the plastic film arch shed to ensure that the plastic film arch shed including both longitudinal ends is completely enclosed. Subsequently, cover the sunshade net of the appropriate size and specification on the outside of the shed film, fix the shed film and the sunshade net near the ground around the plastic film arch shed, and compact them with weights.

3. The treatment method for preventing wind disasters and reducing losses suitable for plastic film arch greenhouses according to claim 2, characterized in that: When the predicted wind force ≤ 10 levels, check the roof arch frame structure and the connecting joint parts of the plastic film arch shed to ensure that they are not damaged, loose or deformed. If the roof arch frame and the connecting joints of the plastic film arch shed are damaged, loose or deformed, handle them. After ensuring the structural safety of the plastic film arch shed, then completely enclose the plastic film arch shed.

4. The treatment method for preventing wind disasters and reducing losses applicable to plastic film arch greenhouses according to any one of claims 1-3, characterized in that: The basic components of the plastic film arch shed include arch frames and tie rods connecting the arch frames, diagonal braces obliquely connecting and fixing the arch frames, columns vertically supporting the plastic film arch shed, side support columns on both lateral sides of the plastic film arch shed, and card slots longitudinally extending and connecting each arch frame arranged on both lateral sides of the plastic film arch shed; the columns include shed head columns at both longitudinal ends of the plastic film arch shed and internal shed-in columns.

5. The treatment method for preventing wind disasters and reducing losses suitable for plastic film arch greenhouses according to claim 4, characterized in that: When the predicted wind force > 10 levels and there are crops planted in the plastic film arch shed, set up the small arch frames of the low small arch shed at least two days before the typhoon and strong wind arrive. After completing the construction of the small arch frames, then cover the small arch frames with shed film and sunshade net; At least one day before the typhoon and strong wind arrive, cover the shed film and the sunshade net on the small arch frames of the low small arch shed from the inside out in sequence, so that the shed film and the sunshade net completely enclose the low small arch shed, and both longitudinal ends of the low small arch shed are also completely enclosed by the shed film and the sunshade net. Compact and fix them by compacting with soil or other weights on the ground, and at least compact and balance the weights around the low small arch shed.

6. The processing method for preventing wind disasters and reducing losses suitable for plastic film arch greenhouses according to claim 5, characterized in that: Directly use the removed covering material on the plastic film arch shed to cover the low small arch shed.

7. The treatment method for preventing wind disasters and reducing losses applicable to plastic film arch greenhouses according to claim 4, characterized in that: The low and short small arch shed includes small arch frames, and the arrangement method is as follows: the span of the small arch frames of the low and short small arch shed does not exceed 1.5 m, and the top height is 0.3 - 0.5 m. The small arch frames include cross arch frames and single arches. Cross arch frames are arranged at both longitudinal ends of the low and short small arch shed, and a cross arch frame is arranged every 2 m between the cross arch frames at both longitudinal ends, and single arches are arranged every 0.5 m in other parts between every two adjacent cross arch frames.

8. The treatment method for preventing wind disasters and reducing losses applicable to plastic film arch greenhouses according to any one of claims 1 to 3, characterized in that: After the typhoon and strong wind pass by, remove the shed film and sunshade net on the plastic film arch shed or the low and short small arch shed and tidy them up. Check the plastic film arch shed, and check the important positions of the arch frames and connection nodes. If there is any damage, deal with it in time to restore the plastic film arch shed to the state before the typhoon and strong wind come.

9. The treatment method for preventing wind disasters and reducing losses applicable to plastic film arch greenhouses according to any one of claims 1 to 3, characterized in that: The upper arch frame of the plastic film arch shed is longitudinally provided with clamping grooves, and the shed film is fixed to the clamping grooves through snap rings.

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