CN111357575A

CN111357575A - Method for planting industrial hemp in air film building

Info

Publication number: CN111357575A
Application number: CN202010137575.3A
Authority: CN
Inventors: 李戎飞; 钱晓峰
Original assignee: Demate Smart Agricultural Technology Beijing Co ltd
Current assignee: Demate Smart Agricultural Technology Beijing Co ltd
Priority date: 2020-03-02
Filing date: 2020-03-02
Publication date: 2020-07-03

Abstract

The invention provides a method for planting industrial hemp in a gas film building, which comprises the following steps: ordering air film buildings from air film building engineering companies according to the planned land area and the plane size; secondly, building an air film building on the leveled land; thirdly, installing a power distribution cabinet and an inflatable air conditioning equipment box for the air film building constructed in the second step; fourthly, the inflatable air conditioning equipment installed in the second step is started, so that the air film rises to form a dome, and the temperature and humidity of the indoor air are adjusted to be in a proper range; fifthly, placing auxiliary facilities required by industrial hemp planting in the air film building built in the step two; sixthly, sowing industrial hemp seeds in the air film building built in the step two; seventhly, continuously performing daily growth maintenance on the industrial hemp seeds sowed in the step six until the seeds are harvested; eighthly, repeating the sixth step and the seventh step to obtain more industrial hemp harvests; the method of the invention is scientific, has good manufacturability and large planting benefit, and has wide popularization and application value.

Description

Method for planting industrial hemp in air film building

Technical Field

The invention provides a planting method of industrial hemp, which relates to the rapid construction of a controllable artificial environment for the planting of industrial hemp, so that the planting process can not be influenced by the external environment, and the repeated planting in multiple seasons within one year can be realized. The invention belongs to the technical field of industrial hemp planting.

Technical Field

Traditional planting method

The traditional industrial hemp planting method is basically the same as that of other crops, and mainly comprises the following modes:

field planting-planting directly in the open air;

greenhouse planting, also called sunshine house planting, wherein a totally-enclosed building is built by taking transparent materials such as glass or plastic films as main isolation objects, and planting is carried out in the building;

plant factory planting, namely building a totally-enclosed building by using non-light-transmitting materials with strong bearing capacity, and arranging precise environmental control equipment and automatic facilities inside the building to realize the most efficient planting process inside the building.

Analysis of advantages and disadvantages of conventional planting methods

Planting in field

As is known, the field planting method widely adopted in various places has the greatest advantages of low cost, no need of building any buildings and no dependence on electric facilities, can be directly planted in field soil, mainly pays some labor cost and the use cost of agricultural machinery, and can be said to be the method with the highest output benefit.

However, the field planting method has serious inherent defects that the field planting method is greatly influenced by natural climate, and partial or even all of planted crops are damaged due to natural disasters such as wind, rain, drought, waterlogging, cold, heat and the like. The ability of human beings to control the natural environment is extremely limited, and the cost of related measures, such as artificial rainfall, windbreak establishment, water conservancy facilities and the like, is extremely high. Even if the wind and the rain are adjusted smoothly, most of the areas are suitable for planting crops in a small part of the year due to the change of natural climate conditions in four seasons. Overall, this planting method is the least safe and the annual yield per unit of land is the lowest.

Greenhouse planting

Compared with field planting, the mode has better capability of resisting severe environment. Due to the isolation protection of buildings, people can plant the greenhouse in four seasons by a simple temperature and humidity control means inside the greenhouse. Such buildings are relatively inexpensive, capable of withstanding small-scale weather, and are commonly used for growing fruit and vegetables of relatively high economic value. The planting mode has the greatest advantage that the environmental resource, namely sunlight, can be utilized to the greatest extent while the environmental resistance is provided, and a wet curtain air cooler is adopted as a main temperature and humidity control means, so that the energy consumption of the whole planting process is very low.

However, the resistance of the low-cost building to the severe environment is relatively low, the environment condition in the greenhouse can be destroyed in extreme weather, the crop planting can be greatly reduced, and the greenhouse building can be thoroughly destroyed when the wind power reaches a certain level. Greenhouse cultivation is therefore generally suitable for areas with good climatic conditions, whereas in areas with too cold or damp heat, relatively high energy costs are required for heating or cooling dehumidification. And in areas with more frequent hurricane or hail weather, the greenhouse planting mode is not suitable.

Plant factory planting

In order to realize risk-free planting all year round in various climatic environments, people build buildings with enough strength according to the climatic characteristics of the places so as to ensure that the worst weather which may occur locally can be resisted. The high-end environmental control equipment with enough capacity is arranged in the building, the temperature, the humidity, the illumination and the CO2 concentration are accurately controlled, and the good environmental condition is ensured every day all the year round, so that the growth of crops is facilitated. Meanwhile, because the construction cost is relatively high, the maximization of planting efficiency and productivity is pursued, and the construction becomes a necessary option for the planting mode, so that a plant factory is usually built to be high, and an automatic three-dimensional planting facility is assembled inside to fully utilize the construction space. Safety and high efficiency are significant advantages of this planting method.

However, the overall cost of such an implantation is high. On one hand, the method is initial investment mainly comprising plants, facilities and the like, and on the other hand, the method is running cost mainly comprising power consumption of illumination required by plant photosynthesis, power consumption of air conditioning equipment required by temperature and humidity control and the like. Therefore, under the condition that the global natural environment is good and the field planting and greenhouse planting method can still be used in a large scale, the plant factory is mainly applied to planting crops with extremely high added value.

Air film building

Air film building is a new building form developed in the last decade. The building adopts a high-strength membrane material as a shell, and is provided with a set of intelligent electromechanical equipment to fill air with certain pressure in the air membrane building so as to support the membrane material to form a dome, thereby forming a relatively closed independent space in the membrane material. The difference between the internal and external air pressures is usually 250 Pa.

Air film building construction see figure 1.

Currently, air film buildings are mainly used in sports stadiums in cities.

The air film building mainly has the following characteristics:

1. the air film building can easily realize a large-span light building space without support. The air film building membrane material dead weight is extremely light (dead weight per square meter is less than 3 kilograms), utilizes the air pressure to support the air film material at the top, does not need internal beam and column, so can easily realize the large-span headroom more than 100 meters.

2. The air film building has good energy saving characteristics in internal temperature maintenance. The surface of the air film building film material is coated with an infrared reflection material, and the heat conductivity is low, so that the constant temperature control in the building is facilitated.

3. The air film building construction is simple and environment-friendly. The air film building is simple, convenient and flexible to disassemble and assemble, can be connected with other conventional buildings in an airtight mode, does not have building rubbish output in the manufacturing and construction processes, and does not have large noise and environmental pollution on site.

4. The air film building has good acoustic performance. The air film building is a natural sound absorption material, and particularly has a strong sound absorption effect on the audio frequency below 60 hz.

5. The air film building has excellent optical performance. The air film building can adopt a film material with high light transmittance to obtain sufficient natural lighting, and can also adopt a light-tight film material to realize a full-black darkroom.

6. Air film buildings typically employ optimized ventilation. The ventilation system in the interior continues to use scientific ground ventilation design, adopts the replacement ventilation principle, and ventilation efficiency coefficient is high, provides hyperstatic airflow to inside, can not exert an influence to indoor activity. In addition, the air film building system integrates the inflation, indoor ventilation and air conditioning of the building, an internal pipeline is not needed to be additionally arranged, energy can be effectively saved, and the internal air quality is guaranteed.

7. The safety of the air film building is outstanding. The arc surface formed naturally by inflation can reduce external wind resistance, and under the action of wind load, the main stress is uplifting force, and the influence of wind power on the stability of the building structure is small. Meanwhile, the building membrane with medium (0.6mm) strength is adopted, the tensile strength of the building membrane is already equivalent to that of a common building external steel plate, and the damaged membrane can be easily repaired. Under the condition that the inflation equipment is used for one time, the possibility of the top collapse is extremely low, even if the internal air pressure is insufficient due to power failure, the air film shed roof slowly falls, and the damage to people and objects due to smashing is avoided. In addition, because the weight of the air film is smaller, some overhead supports are arranged in the room, and the existence of basic moving space in the room can be ensured.

It can be seen that the characteristics of air film construction are well suited to the needs of industrial hemp planting.

Disclosure of Invention

Purpose(s) to

A novel planting mode, namely air film building planting, is provided, the air film building is adopted as a main maintenance structure mode for constructing a planting environment, an excellent internal environment construction effect can be obtained through relatively low cost (slightly higher than a greenhouse planting mode), particularly, the infrastructure construction process can be simplified and accelerated in remote areas, and the crop planting process can be started more quickly and better.

The invention aims to provide a method for planting industrial hemp in a gas film building, which can shorten the construction period of infrastructure to the maximum extent, improve the land utilization rate and improve the total annual output through multi-season planting.

Technical scheme

The invention relates to a method for planting industrial hemp in a gas film building, which comprises the following implementation steps:

step one, ordering air film buildings to an air film building engineering company according to the planned land area and the plane size;

step two, building a gas film building on the leveled land;

step three, installing a power distribution cabinet and an inflatable air conditioning equipment box for the air film building established in the step two;

step four, the inflatable air conditioning equipment installed in the step two is started, the air film rises to form a dome, and the temperature and humidity of the indoor air are adjusted to a proper range;

step five, placing auxiliary facilities required by industrial hemp planting in the air film building built in the step two;

step six, sowing industrial hemp seeds in the air film building built in the step two;

step seven, continuously carrying out daily growth and maintenance on the industrial hemp seeds sowed in the step six until the seeds are harvested;

step eight, repeating the step six and the step seven to obtain more industrial hemp harvest;

the 'air film building' in the step one refers to a mature building form in the current market, and a high-strength film is adopted as a building main body material; the film building adopts light-transmitting polyvinyl fluoride (ETFE) material, has the performances of strong toughness, low friction coefficient, corrosion resistance, aging resistance, weather resistance, irradiation resistance and the like, and can allow plants inside to obtain sufficient sunlight irradiation.

Wherein, the construction process of the 'construction of the air film building' in the step two is as follows:

digging a ditch with the depth of 0.5-0.6 m and the width of 0.4-0.5 m along the outer edge of the air film building;

building a circle of low wall by adopting a reinforced concrete pouring or reinforcing steel bar and brick building mode from the bottom of the trench, wherein the upper edge of the wall is about 25-35 cm higher than the ground, and an anchor hook (a metal standard part) is pre-embedded when a ring beam is built;

filling soil on two sides of the wall to be flat to form a ring beam;

laying a prefabricated membrane material with a specific size in a ring beam area, and attaching the edge of the membrane material to the position of the ring beam;

the edge of the membrane material is placed on the ring beam, is tightly pressed by the clamping plate, and is fixed by the anchor hook, so that the edge of the membrane material is locked, and good air tightness is ensured.

Wherein, the 'power distribution cabinet' in the third step is used for the whole power utilization requirements of the related equipment of the whole air film building, the interior of the building and the peripheral facilities; the production of the power distribution cabinet must meet the relevant industry specifications; the feed of the public power grid is firstly connected into a power distribution cabinet and then provided for different power utilization facilities through a shunt (also called a branch) switch; the switch cabinet should contain at least the following branches: the capacity of each branch circuit is determined according to the power of the equipment required by practice.

The "inflatable air-conditioning box" in step three refers to a standard supporting device for air film buildings, and is usually provided by air film building engineering companies; the inflatable air-conditioning box has an inflation function, namely, air is sent into the air film building from the outside to form a certain positive pressure inside the air film building, so that the air film is kept arched; the inflatable air-conditioning box also has an internal air circulation function and aims to adjust the indoor air temperature and humidity through air-conditioning equipment in the box; the inflatable air conditioning box is provided with a power electric switch and an automatic control unit, so that the temperature and humidity of indoor air and the air pressure difference between the indoor air and the outdoor air can be monitored in real time, meanwhile, a user sets a target temperature and humidity through an interactive interface provided in the control unit, and the control unit executes automatic control; if the pressure difference is lower than 200Pa, the control unit starts the inflation function until the pressure difference reaches more than 200 Pa; if the temperature and humidity deviate from the requirements, the control unit starts an internal air circulation function to correspondingly adjust the temperature and humidity until the temperature and humidity reach the preset requirements.

The installation process of the power distribution cabinet and the inflatable air conditioning cabinet in the third step strictly conforms to the industrial standard, all cables are protected by metal threading pipes, and circuit connecting parts close to a planting area need to adopt waterproof model specifications and are strictly connected according to the standard.

The step four of turning on the inflatable air-conditioning equipment installed in the step two means to turn on a power switch of the inflatable air-conditioning box, so that a control unit of the inflatable air-conditioning box is powered on to operate and perform an inflation function.

The step four of adjusting the indoor air temperature and humidity to the proper range means that a required temperature and humidity set value is input on a control unit interaction interface of the inflatable air-conditioning box, and the control unit executes an automatic adjustment function of the indoor air temperature and humidity; for industrial hemp planting, a suitable temperature is in the interval 20 ℃ to 35 ℃ and a suitable humidity is in the interval 45% RH to 65% RH (note:% RH is relative humidity unit); in consideration of energy saving, the numerical value closest to the temperature and humidity of the external environment should be selected and input in the appropriate interval during actual setting.

The auxiliary facilities needed by the industrial hemp planting in the fifth step are the seedbed for placing the industrial hemp planting container (such as a flowerpot), the light supplement lamp for accelerating the growth speed of the industrial hemp, the bracket for hanging the light supplement lamp in the air, the water storage tank for daily irrigation of the industrial hemp, the water pipe for watering the industrial hemp plants, the spray head and other articles needed in the planting process.

In the sixth step, "sowing industrial hemp seeds" is the same as that of most crops in that the industrial hemp seeds are buried in soil in a planting container (such as a flowerpot) to a depth of about 1cm to 2.5cm, and the soil is kept moist but does not contain accumulated water; further, in order to keep the soil moist for a long time, a transparent plastic film is covered on the surface of the soil; after the seed sprouts, a hole is cut in the position that the seedling corresponds on the film, avoids the film to block the growth space of seedling on the one hand, also guarantees simultaneously that the seedling can fully contact external air.

The step seven refers to operations such as watering, fertilizing, supplementing light and the like of industrial hemp plants as required every day; the watering is to remove the plastic film covering the soil surface when the seedling grows for about 1 week, and then, the watering operation is carried out every time the soil is dry; the fertilizer application is to add nutrients required for plant growth into irrigated water after the industrial hemp plants grow for about three weeks, wherein the main components comprise nitrogen, phosphorus and potassium, the nutrients are directly obtained by purchasing universal standard planting fertilizer products from the market, and the addition amount is determined according to product specifications; the light supplement comprises the step of turning on a light supplement lamp in cloudy days to increase the illuminance on the industrial hemp plants.

The step eight refers to planting a new batch of industrial hemp by using the vacant planting space after each batch of industrial hemp is harvested, and the specific operation process is repeated by the step six and the step seven; as long as the interior of the air film building can meet the conditions set in the step four, the climate change of the exterior of the air film building can be disregarded, and the planting process of the industrial hemp can be continuously repeated throughout the year.

Through the steps, only one time is needed to execute the first step to the fifth step, a good planting environment can be constructed, continuous multi-season planting of industrial hemp is realized all the year round, the annual output of the industrial hemp in a unit land is greatly improved, meanwhile, the practical problems of high complexity and long construction period of the traditional greenhouse construction are solved with lower cost, and the method is particularly suitable for large-scale planting of the industrial hemp in remote areas.

Advantages and effects of the invention

Because the air film building is adopted as the environment construction means for planting the industrial hemp, compared with plant engineering and a traditional large-scale greenhouse, the method provided by the invention has remarkable advantages in the actual planting process of the industrial hemp:

(1) the building material is mainly made of plastic films, and is matched with a small amount of civil engineering parts, so that the cost is low, and the removal or abandonment loss is small;

(2) the air film building equipment has high standardization degree and simple construction process, greatly reduces the pollution in the construction process and greatly shortens the construction period;

(3) the air film building has no collapse risk, can resist higher wind power level, and greatly improves the safety;

(4) the air film building has better sealing performance, keeps positive pressure in the internal environment and has unique advantage in the aspect of disease and insect resistance.

(5) The method of the invention is scientific, has good manufacturability and large planting benefit, and has wide popularization and application value.

Drawings

Fig. 1 is a perspective view of an air film building structure according to the present invention.

FIG. 2 is a flow chart of the equipment of the air treatment box in the air film building.

Fig. 3 is a schematic elevation view of industrial hemp planted in a gas film building according to the present invention.

FIG. 4 is a flow chart of the method of the present invention.

The numbers, symbols and codes in the figures are explained as follows:

1. foundation ring beam 2, film material 3, inflatable air conditioning equipment box 4 and power distribution cabinet

5. Vehicle access & exit 6, pedestrian access & exit 7, water storage tank 8, support

9. Light filling lamp 10, industrial hemp plant 11, outdoor air inlet 12, airstrainer

13. Electric air valve 14, indoor air inlet 15, air filter screen 16 and electric air valve

17. High-efficiency filter 18, centrifugal fan 19, surface cooler 20 and electric heater

21. Wet film humidifier 22, non-return air valve 23, indoor air outlet

24. Automatic control unit 25, aerify air conditioning case shell

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The invention provides a method for planting industrial hemp in a gas film building, which is shown in figure 4; firstly, an air film building needs to be built, as shown in fig. 1, the implementation steps are as follows:

and step one, ordering air film buildings from air film building engineering companies according to the planned land area and the plane size.

In the first step, the 2-film material adopts a high-strength light-transmitting film, such as polyvinyl fluoride (ETFE) material, which has the properties of strong toughness, low friction coefficient, corrosion resistance, aging resistance, weather resistance, irradiation resistance and the like, and can ensure that plants in the air film building can obtain sufficient sunlight irradiation.

In the first step, the 3-inflatable air conditioning box has an inflation function and also has complete temperature and humidity regulation and automatic control functions. The general flow is shown in figure 2. The concrete description is as follows:

and (3) an inflation process:

when the interior of the air film building needs to be inflated and pressurized, the [ 13-electric air valve ] is opened, the [ 16-electric air valve ] is closed, the [ 18-centrifugal fan ] is opened, outdoor air enters a room through the [ 11-outdoor air inlet ] → [ 12-air filter net ] → [ 13-electric air valve ] → [ 18-centrifugal fan ] → [ 19-surface air cooler ] → [ 20-electric heater ] → [ 21-wet film humidifier ] → [ 22-check air valve ] → [ 23-indoor air outlet ], air is continuously added to the interior of the air film, and air pressure is increased.

The internal circulation process is as follows:

when the air pressure in the air film building is sufficient, the [ 16-electric air valve ] is opened, the [ 13-electric air valve ] is closed, the [ 18-centrifugal fan ] is opened, and the indoor air returns to the room through the [ 14-indoor air inlet ] → [ 15-air filter net ] → [ 16-electric air valve ] → [ 18-centrifugal fan ] → [ 19-surface air cooler ] → [ 20-electric heater ] → [ 21-wet film humidifier ] → [ 22-check air valve ] → [ 23-indoor air outlet ], so that indoor air circulation is formed, and the temperature and humidity of the air can be adjusted.

The temperature and humidity adjusting method comprises the following steps:

aerify or the internal circulation in-process, when the air current was through the surface cooler, the cold volume of adjustable surface cooler forms the cooling and the dehumidification of different degrees to the air. When the air flows through the electric heater, the air can be heated by turning on the electric heater. When the air flows through the wet film humidifier, the air can be humidified by starting the humidifier to supply water.

The automatic control method for inflation and temperature and humidity adjustment comprises the following steps:

the air-filled air-conditioning equipment products are all equipped with an electric appliance automatic control device, as shown in fig. 2 [ 24-automatic control unit ], and comprise air pressure difference sensors (used for measuring air pressure difference inside and outside the air film) and temperature and humidity sensors (used for measuring air temperature and humidity inside the air film). When the pressure difference between the inside and the outside of the air film does not reach 200Pa, [ 24-automatic control unit ] starts the inflation process to pressurize the air film, and simultaneously adjusts the temperature and the humidity.

When the pressure difference between the inside and the outside of the air film reaches more than 200Pa, [ 24-automatic control unit ] starts the internal circulation process and simultaneously adjusts the temperature and the humidity.

In the first step, the [ 4-power distribution cabinet ] at least comprises the following lower end branches: the air-conditioning equipment box power supply branch, the light filling lamp power supply branch and other power utilization branches. The configuration capacity of each branch is determined according to the total electric power of the equipment which needs to be assembled actually.

After all the components of the air film building ordered in the step one are processed in the factory, the air film building needs to be transported to a construction site for field installation. As shown in fig. 1, the specific steps are as follows:

and step two, constructing a gas film building on the leveled land. The operation method comprises the following steps:

digging a ditch along the trend position of the outer edge [ 1-ring beam ] of the air film building, wherein the depth of the ditch is 0.5 m, and the width of the ditch is 0.4 m; the brick wall is built from the bottom of the ditch, the total height is 80cm, reinforcing bars are added in the wall for reinforcement, anchor hooks are embedded at the top of the wall at equal intervals, the interval of the anchor hooks is determined by the size of a matched clamping plate provided by a gas film manufacturer, and the surface of the wall is plastered by cement. After the cement is dried, the two sides of the wall are filled with soil and tamped, and the soil is leveled with the surrounding ground to form a [ 1-ring beam ].

According to the integral design of the air film building, concrete foundations are poured at corresponding positions for installing a 3-inflatable air conditioning box, a 4-power distribution cabinet, a 5-vehicle inlet and outlet and a 6-pedestrian inlet and outlet respectively.

And (3) laying the [ 2-film material ] in the [ 1-ring beam ] area, and tightly fixing the edge of the [ 2-film material ] with the [ 1-ring beam ] through an anchor hook.

And step three, installing a 4-power distribution cabinet and a 3-inflatable air conditioning equipment box to a specified position, and properly fixing the boxes together with the concrete foundation.

Furthermore, the feed of the public power grid is connected into the upper port of the 4-power distribution cabinet, and the connection is firm;

and further, connecting a power supply port of a power supply branch of the inflatable air conditioning equipment box in the [ 4-power distribution cabinet ] to a power electricity access end of the [ 3-inflatable air conditioning equipment box ].

Furthermore, the edge part of the [ 2-film material ] connected with the [ 3-inflatable air-conditioning equipment box ] is tightly fixed together through an anchor hook on the [ 3-inflatable air-conditioning equipment box ].

And step four, starting the related equipment of the air film building to enable the equipment to enter a normal working state. The specific operation is as follows:

the main road of the [ 4-power distribution cabinet ] is opened and closed in an idle mode, and the power electricity of the commercial power grid is introduced;

further, the power supply branch of the [ 4-power distribution cabinet ] inflatable air-conditioning equipment box is opened and closed in an air mode, and power is transmitted to the [ 3-inflatable air-conditioning equipment box ];

further, a power switch of the [ 3-inflatable air conditioning equipment box ] is closed, so that a [ 24-automatic control unit ] in the [ 3-inflatable air conditioning equipment box ] is electrified and starts to operate;

further, in the [ 24-automatic control unit ] equipped interactive interface, the indoor air temperature target was set at 25 ℃, and the indoor air humidity target was set at 50% RH;

further, the [ 3-inflation air-conditioning equipment box ] starts to perform the inflation process by pressing the operation button of the [ 24-automatic control unit ], and simultaneously performs temperature and humidity control on the air inflated into the building.

Finally, when the lower part of the [ 2-film material ] is filled with enough air to form a pressure difference of more than 200Pa with the outside, the [ 2-film material ] is arched upwards to the maximum extent, and a closed indoor space is formed below the [ 2-film material ].

After that, the [ 24-automatic control unit ] controls the [ 3-inflatable air conditioning equipment box ] to switch between inflation and internal circulation temperature and humidity regulation functions in time so as to ensure that the pressure difference between the inside and the outside of the air film building is always maintained between 200Pa and 250Pa, and simultaneously, the indoor air temperature and humidity are always regulated to be kept near the preset value.

For industrial hemp planting, a suitable temperature is in the interval 22 ℃ to 30 ℃ and a suitable humidity is in the interval 50% RH to 60% RH. In consideration of energy saving, the numerical value closest to the temperature and humidity of the external environment can be selected in the appropriate interval during actual setting.

The steps complete the construction and operation of the air film building, and create suitable environmental conditions for industrial hemp planting. The following steps describe in detail the method of industrial hemp planting inside the air film building. As shown in fig. 3.

And step five, placing auxiliary facilities required by industrial hemp planting in the air film building built in the step one. Mainly comprises the following aspects:

in order to facilitate the operation of workers, the seedbed is placed in the planting area inside the building, and the industrial hemp planting containers (such as flowerpots) are placed on the seedbed. If the seedbed is not used, the industrial hemp planting container is directly placed on the ground;

in order to accelerate the growth speed of industrial hemp, a certain number of light supplementing lamps are prepared, the height of the lamps is properly adjusted according to the configuration of 1kW per 5 square meters, so that the planting area can obtain uniform illumination as far as possible, and the light supplementing lamps can be selected from special sodium lamps or LED lamps for plant growth. The light supplement lamp is generally used for supplementing the illumination intensity to the industrial hemp plants under the condition of insufficient sunlight in cloudy days, and is also used for prolonging the illumination time of the industrial hemp plants after sunset.

Erecting [ 8-bracket ] upright posts around a seedbed, wherein the part of the upright posts buried below the ground is not less than 1m, the height of the upright posts above the ground is not less than 2m higher than the position of an industrial hemp planting container, and at the height, steel wires are pulled between the [ 8-bracket ] upright posts for hanging [ 9-light supplement lamps ] in the air, the power supplies of all the light supplement lamps are connected to the light supplement lamp branches of the [ 4-power distribution cabinet ], and the air on the branches is used for controlling the opening or closing of the [ 9-light supplement lamps ];

in order to meet the demand of planting water in the planting process of industrial hemp, a [ 7-water storage tank ] is arranged in the building, and the volume of the [ 7-water storage tank ] is required to meet the total watering amount of all industrial hemp plants in the growth vigorous period of 3 days. In addition, a special water pipe for watering and a booster water pump and other articles are needed, one end of the water pipe is provided with a shower nozzle, and the other end of the water pipe can be connected with an outlet pipe of the 7-water storage tank through the booster water pump.

After the work of the steps is completed, the industrial hemp can be planted. The planting process is described in the following steps.

And step six, sowing industrial hemp seeds in the air film building, and cultivating the industrial hemp seeds to germinate and grow seedlings.

As with most crop seeding methods, the industrial hemp plant container is first selected, and needs to ensure good water permeability, and can be a flowerpot with a drain hole, a plastic pot or a plastic bag, and the volume is not less than 10 liters. Wherein the soil form has no special requirements, and various planting special substrates such as coconut coir and the like can also be adopted.

Industrial hemp seeds are buried in soil in a planting container to a depth of about 1cm to 2cm, and the soil is kept moist by appropriate watering, but no water is present.

Further, in order to keep the soil moist for a long time, the soil surface is covered with a transparent plastic film.

After the seeds germinate by breaking the ground, a hole is cut at the position corresponding to the seedling on the film, so that the film is prevented from blocking the growth space of the seedling, and the seedling can be fully contacted with the external air.

Seventhly, continuously carrying out daily growth maintenance on the plants until the leaves of the seedlings grow until the plants are harvested;

at first, guarantee that the plant can obtain sufficient illumination every day, if natural illumination intensity is not enough, then should open the light filling lamp and carry out the light filling to accessible extension light filling time's mode guarantees that the illumination time of every day is no less than 12 hours.

Watering is carried out regularly to maintain soil moisture. The watering time adopts the principle of 'see dry see wet', namely, after the soil is in a dry state, the water is watered thoroughly at one time, and the redundant accumulated water is completely drained out of the container. And repeating the watering action until the soil is in a dry state again next time.

Starting after about 1 week, when watering, a proper amount of nutrient solution (and fertilizer) should be matched, mainly nitrogen, phosphorus and potassium, and the proportion is about 20: 10: 10. the nutrient solution can be purchased from the market, and products with similar mixture ratio can be selected, and the product specification can be referred to for the use amount each time.

After about 3 more weeks, the plant size has become very large and begins to enter the flowering phase. At this stage, a special nutrient solution product for the flowering phase should be purchased, and the nitrogen, phosphorus and potassium ratio of the special nutrient solution product is about 5: 15: about 10.

In addition, from the stage, the plants grow gradually vigorously, when the illumination is sufficient in the daytime, the 6-pedestrian entrance of the air film building is opened for a period of time periodically, and outdoor air is introduced into the interior of the building through the inflation process of the 3-inflation air conditioning equipment box, so that the content of indoor CO2 is increased, and the plants can perform the illumination function. This process can be controlled once per hour for about 3 to 5 minutes each time.

After about 3 more weeks, the flowers are already very flourishing and the plants gradually turn to maturity, usually as determined by observing the status of the plant leaves. When a part of the older leaves began to turn brown, it was at the time of harvest.

And step eight, repeating the step six and the step seven to obtain more industrial hemp harvests.

The 'repeating' means that after each batch of industrial hemp is harvested, a new batch of industrial hemp is planted by utilizing the vacant planting space, and the specific operation process is repeated by the sixth step and the seventh step.

And (3) as long as the interior of the air film building can meet the conditions set in the step three, the climate change of the exterior of the air film building can be disregarded, and the planting process of the industrial hemp can be continuously repeated throughout the year.

Due to the difference of varieties and the difference of illumination conditions and temperature and humidity conditions, the time schedule of the growth of industrial hemp plants may be different from the steps. Generally, the growth rate of plants is usually reduced by insufficient light and low temperature.

In the planting process of industrial marijuana, in order to prevent diseases, the humidity inside the air film building is prevented from being too high, and the maximum humidity is not more than 60% RH. However, too low a humidity tends to cause the soil to lose too much water, so that it is optimal that the air humidity should be kept above 40% RH.

Claims

1. A method for planting industrial hemp in a gas film building, which is characterized in that: the implementation steps are as follows:

step two, building a gas film building on the leveled land;

step seven, continuously carrying out daily growth and maintenance on the industrial hemp seeds sowed in the step five until the seeds are harvested;

2. A method of growing industrial hemp in a gas film building according to claim 1, wherein: the 'air film building' in the step one refers to a mature building form in the current market, and a high-strength film is adopted as a building main body material; the film building adopts light-transmitting polyvinyl fluoride (ETFE) material, has the performances of strong toughness, low friction coefficient, corrosion resistance, aging resistance, weather resistance and irradiation resistance, and can ensure that plants in the film building can obtain sufficient sunlight irradiation.

3. A method of growing industrial hemp in a gas film building according to claim 1, wherein: the construction process of the 'construction of the air film building' in the step two is as follows:

building a circle of low wall by adopting a reinforced concrete pouring or reinforcing steel bar and brick building mode from the bottom of the trench, wherein the upper edge of the wall is about 25-35 cm higher than the ground, and anchor hooks are pre-embedded when a ring beam is built;

filling soil on two sides of the wall to be flat to form a ring beam;

4. A method of growing industrial hemp in a gas film building according to claim 1, wherein: the 'power distribution cabinet' in the third step is used for the whole power utilization requirements of the related equipment of the whole air film building, the interior of the building and peripheral facilities; the production of the power distribution cabinet must meet the relevant industry specifications; the feed of the public power grid is firstly connected into a power distribution cabinet and then provided for different power utilization facilities through a shunt switch; the switch cabinet should contain at least the following branches: the capacity of each branch circuit is determined according to the power of the equipment needed in practice;

the "inflatable air-conditioning box" in step three refers to the standard equipment for air film building, which is usually provided by air film building engineering company; the inflatable air-conditioning box has an inflation function, namely, air is sent into the air film building from the outside to form a preset positive pressure inside the air film building so as to keep the air film arched; the inflatable air-conditioning box also has an internal air circulation function and aims to adjust the indoor air temperature and humidity through air-conditioning equipment in the box; the inflatable air conditioning box is provided with a power electric switch and an automatic control unit, so that the temperature and humidity of indoor air and the air pressure difference between the indoor air and the outdoor air can be monitored in real time, meanwhile, a user sets a target temperature and humidity through an interactive interface provided in the control unit, and the control unit executes automatic control; if the pressure difference is lower than 200Pa, the control unit starts the inflation function until the pressure difference reaches more than 200 Pa; if the temperature and humidity deviate from the requirements, the control unit starts an internal air circulation function to correspondingly regulate the temperature and humidity until the temperature and humidity reach the preset requirements;

in the third step, "install switch board and aerify air-conditioning box", its installation process requirement strictly follows the industry standard, and all cables all adopt the protection of metal threading pipe, must adopt waterproof model specification at the circuit connecting part that is close to planting region to connect the operation according to the standard strictly.

5. A method of growing industrial hemp in a gas film building according to claim 1, wherein: the step four of turning on the inflatable air conditioning equipment installed in the step two means that a power electric switch arranged on the inflatable air conditioning box is turned on, so that a control unit of the inflatable air conditioning box is electrified and operated, and an inflation function is executed;

the step four, wherein the step "adjusting the temperature and humidity of the indoor air to the proper range" means that a required temperature and humidity set value is input on a control unit interactive interface of the inflatable air-conditioning box, and the control unit executes an automatic adjustment function of the temperature and humidity of the indoor air; for industrial hemp planting, the suitable temperature is in the interval of 20 ℃ to 35 ℃ and the suitable humidity is in the interval of 45% RH to 65% RH; in consideration of energy saving, the numerical value closest to the temperature and humidity of the external environment should be selected and input in the appropriate interval during actual setting.

6. A method of growing industrial hemp in a gas film building according to claim 1, wherein: the auxiliary facilities needed by the industrial hemp planting in the fifth step are objects, such as seedbeds for placing industrial hemp planting containers, such as flowerpots, light supplement lamps for accelerating the growth speed of the industrial hemp, brackets for hanging the light supplement lamps in the air, water storage tanks for daily irrigation of the industrial hemp, water pipes for watering industrial hemp plants and nozzles, which are needed in the planting process.

7. A method of growing industrial hemp in a gas film building according to claim 1, wherein: the sowing method of the industrial hemp seeds is the same as that of most crops, namely, the industrial hemp seeds are buried in soil in a planting container such as a flowerpot with the depth of about 1cm to 2.5cm, and the soil is kept moist but does not contain accumulated water; further, in order to keep the soil moist for a long time, a transparent plastic film is covered on the surface of the soil; after the seed sprouts, a hole is cut in the position that the seedling corresponds on the film, avoids the film to block the growth space of seedling on the one hand, also guarantees simultaneously that the seedling can fully contact external air.

8. A method of growing industrial hemp in a gas film building according to claim 1, wherein: the "daily growth maintenance" in the seventh step means that the industrial hemp plants are watered, fertilized and supplemented with light as required every day; the watering is to remove the plastic film covering the soil surface when the seedling grows for about 1 week, and then, the watering operation is carried out every time the soil is dry; the fertilizer application is to add nutrients required by plant growth into irrigated water after the industrial hemp plants grow for three weeks, wherein the main components comprise nitrogen, phosphorus and potassium, the nutrients are directly obtained by purchasing universal standard planting fertilizer products from the market, and the addition amount is determined according to product specifications; the light supplement comprises the step of turning on a light supplement lamp in cloudy days to increase the illuminance on the industrial hemp plants.

9. A method of growing industrial hemp in a gas film building according to claim 1, wherein: the step eight refers to planting a new batch of industrial hemp by utilizing the vacant planting space after each batch of industrial hemp is harvested, and the specific operation process is repeated by the step six and the step seven; and (4) as long as the interior of the air film building can meet the conditions set in the step four, the climate change of the exterior of the air film building is disregarded, and the planting process of the industrial hemp is continuously repeated throughout the year.