How to help the vegetables in the greenhouse survive the winter safely?

The use of light source artificial light, artificial light, the light source should choose fluorescent lamp, high-pressure mercury lamp, arc xenon lamp as well, 40 watts of fluorescent lamps together, 45 cm away from the seedlings, the light intensity of 3000lx-3500lx, 100 watts of high-pressure mercury lamp 80 cm away from the seedlings, the light intensity of 800lx-1000lx; The light filling time should be carried out after sunrise, generally mastered in 2-3 hours a day, the light intensity in the shed increases and stops, and the rain, snow and fog weather can be filled with light throughout the day.

Dig a cold-proof ditch for insulation, dig a cold-proof ditch with a width of 1000px and a depth of 50-2000px at 250px at the back wall of the greenhouse, and cover it with plastic film to insulate the heat dissipation of the indoor soil to the outdoor frozen layer, so as to play the purpose of heat preservation.

Using the straw bioreactor to increase the temperature, dig a ditch with a width of 60-1750px and a depth of 25-750px according to the size of the cultivation furrow, fill the straw, and place a special microbial agent 8kg 667m2, covering the straw with about 500px, and irrigate until the straw can be watered thoroughly. Straw can be gradually decomposed under the action of microorganisms, and release heat and carbon dioxide, this measure can increase the soil temperature of the root layer about 2, can also improve the soil physical structure and ecological environment and enhance the stress resistance of plants, is the best temperature and quality and efficiency improvement measures for vegetable production in winter solar greenhouse.

When building a sunken vegetable greenhouse, when building a vegetable greenhouse. The ground inside the vegetable greenhouse sinks down more than half a meter, down to below the permafrost layer, and the soil temperature for the growth of ground crops will be higher than that of the ground sinking of the relatively horizontal ground, and at the same time, due to the ground sinking in the vegetable greenhouse, the internal space of the greenhouse is increased, which is conducive to heat preservation. Now, this structure is widely used in Shouguang, Shandong, the birthplace of winter warming solar greenhouses in China.

The vegetable greenhouse film with good light transmittance is selected, and the most widely used in the production is PVC longevity non-drip film, which has good light transmittance and thermal insulation performance. At the same time, the surface of the film is cleaned weekly to maintain good light transmission.

The reflective curtain is used to increase the temperature and supplement the light, and the reflective curtain is hung on the north side of the greenhouse cultivation furrow or against the back wall, so that it is appropriate to keep an angle of 75-85 ° with the ground, which can increase the light by about 5000 lux, which can not only increase the ground temperature by 1-3, but also increase the room temperature by about 3.

The cleanest and fastest air conditioner is preferred, if it is clean, the geothermal heating may be able to link the heating pipe, and if the heating is fast, it will burn the boiler and install the radiator.

The greenhouse heater is worth a penny! 2 years ago, I bought a 140kw oil-fired hot air blower and used it in more than 1,000 square meters of phalaenopsis. This machine has thick plates, low fuel consumption, and is safe to use.

I took it out and used it again last year, and the machine still works. I think the Gutu oil hot air blower is really good, you can refer to it!

The most commonly used type of heating is the type of heating, and the airfoil type heating is most commonly used in greenhouses because it is cheaper. (Personally, it is estimated that a shed may cost about 20,000, and you can search for a round airfoil radiator on the Internet).

Greenhouse vegetable heating, greenhouse flowers with finned tube radiator in the greenhouse to maintain the temperature in the greenhouse at the same time, for the indoor flowers to provide a more reasonable growth environment, but also for the greenhouse to provide a large amount of water vapor emission, so that the flowers in the greenhouse can also provide the water needed for growth, so that the greenhouse growth environment is more reasonable. The basic structure of the finned tube radiator for greenhouse flowers is the inner core and the outer structure, and some radiators will add a layer of cover plate to the outer layer, and the installation of the cover plate can be installed according to people's wishes. The finned tubes are usually installed in a staggered arrangement to increase the flow of gas and enhance the heat dissipation performance of the radiator.

Finned tube radiator.

The heating of the finned tube radiator for greenhouse flowers is based on hot water and steam entering from the inlet of the radiator, circulating inside the steel pipe, and then flowing through the entire heating pipe, and returning water from the outlet**, usually up and down. The installation of finned tube radiators for greenhouse flowers is also very important and needs to be installed carefully. DN25 finned tube radiator is welded by seamless pipe or steel tube, because of the excellent heat dissipation of the steel tube itself, so the heat dissipation efficiency of DN25 finned tube radiator made of steel tube is also very high, and the welding is reliable, very durable, and long service life.

Finned tube radiator.

DN25 finned tube radiator in indoor heating installation, will not be as high as modern floor heating requirements for the floor, because the floor heating uses the way of floor heat dissipation, if the decoration is a wooden floor, the high temperature of the floor heating will easily cause the floor bulging, arching, and the finned tube radiator does not need to consider these. <>

Finned tube radiator.

First of all, it is necessary to grasp the sensitivity of varieties to temperature, and choose the appropriate sowing date and planting date according to local climatic conditions, such as the northwest region, which focuses on advocating "early spring and late autumn". Second, in the construction of greenhouses, according to the latitude of each region to choose the appropriate greenhouse material, improve the lighting conditions, improve the structure of the greenhouse, if possible, it is best to use galvanized steel pipe greenhouse, the shed film is best not to use ordinary film, the shed can also be whitened on the wall, which can increase the reflected light and extend the service life.

Greenhouse planting is an indispensable part of planting vegetables in winter, remember that every winter, farmers will worry about how to protect greenhouse vegetables, every winter farmers will put on two clothes for the greenhouse, before and during the low temperature frost damage, crops should stop using nitrogen fertilizer, to prevent the plant from being too soft and cold resistance to decline and fertilizer to kill seedlings, can be sprayed potassium dihydrogen phosphate and 400-500 times of plant antifreeze solution.

Combined with cultivating before freezing, the roots are surrounded by fine soil, which can loosen the soil, increase the soil temperature, and directly protect the roots. However, cultivating soil must be carried out before the soil is frozen, and the depth should be 5 cm-10 cm. The cold weather invades the low temperature and the windy cooling weather, so it is the key to the management of greenhouse vegetables in winter to do a good job of cold protection and heat preservation to avoid low temperature damage to vegetables.

So, how to prevent freezing of vegetables in winter greenhouses?

The winter temperature is low, itself is not suitable for the growth of temperature-loving vegetables, so on the whole, the gap of winter vegetables is larger, through the greenhouse off-season cultivation of vegetables can not only meet the needs of the market, but also can achieve higher cultivation benefits than usual, about the winter northern rural greenhouse vegetable antifreeze measures, the simple point is the insulation and warming measures of the vegetable greenhouse. In the greenhouse, vegetables grown in the winter in the north are also winter warming greenhouses, and a small shed is built in the greenhouse, or the arch shed is covered with insulation materials. At night, it can be covered with plastic film and covered with straw.

In the greenhouse, you can buckle the small arch shed and use fine bamboo as a support, which can effectively prevent freezing damage.

You can spread a layer of plastic wrap on top of the vegetables. Plastic wrap can be used to keep warm, or to install an air conditioner in it.

Large pots of vegetables need to be sealed with plastic film in winter, and the stove can be raised in the greenhouse to maintain the internal temperature. But pay attention to control the temperature, within a certain range.

In view of the impact that the recent weather may have on the fruits and vegetables of the facility, measures should be taken in time before the arrival of snowfall and cold wave weather, and various tasks such as "windproof, heat preservation, antifreeze, disease prevention, and increasing greenhouse light" should be taken. 1.Before the arrival of cloudy and snowy days, melons and fruits should be picked early, and new high-fat film + root spirit should be sprayed to prevent pathogen infection, so that nutrients can flow back to the root system, promote root growth, and enhance the ability of plants to resist adverse environments.

Watering and topdressing should be stopped in the greenhouse on cloudy days, so as not to cause crop roots and aggravate the occurrence of diseases. 2.In the case of even cloudy days, as long as the temperature is not very low, the grass should be properly uncovered and try to scatter light as much as possible.

At the same time, a reflective curtain can be hung at the back of the greenhouse to enhance light and temperature. 3.If the weather is clear after continuous snowfall, the cover cannot be completely removed, and it should be removed successively to prevent "flashing seedlings".

After peeling, it is necessary to pay attention to the changes of crops, and when wilting occurs, it is necessary to immediately cover the grass and spray a new high-fat film to shorten the seedling period. After the seedlings have recovered, the grass is removed, and this is repeated for two or three days, and then transferred to normal management. 4.

Pay attention to heat preservation and heat properly. Multi-layer covering and insulation, that is, covering double layers of grass outside the shed film; If the temperature in the shed is lower than the minimum temperature required for the crop, the room temperature can be appropriately increased by auxiliary heating, but the indoor temperature should not be raised too high to affect the normal development. 5.

Pay attention to windproofing. Before the arrival of windy weather, it is necessary to check the fixing of the plastic film, the laminating line or the pressing rod must be fixed firmly, and the straw must be covered and pressed tightly, and the damaged shed film must be repaired and perfected. (China Plant Protection Network).

Warm up and adjust to the appropriate environment for the crop.

In fact, whether it is planting vegetables or farming, we all know that from the process of assisting in breeding, to rapid growth and ready to go on the market, the feed, temperature, environment, etc. are different; So it's the same as growing vegetables as we do.

<> there are problems from the beginning of seedlings, to the rapid growth period, and finally to the market, one is the temperature. the second is to maintain the freshness of vegetables; The third is to take into account the time of market transportation, neither too early nor too late, to ensure that the vegetables in the hands of customers fresh, healthy, not damaged, not damaged. First of all, we all know that for greenhouse vegetables, doing a good job of temperature management is a very important link, which directly affects the harvest of farmers.

The greenhouse is selected in the sunny place, which is conducive to the increase of the temperature in the greenhouse on the one hand, and can also promote the effective growth of vegetables on the other hand. For the winter greenhouse, it is necessary to use a thick soil wall on one side and two doors with thermal insulation cotton pads at the entrance. If it is a continuous cloudy day, you can cover the shed with a straw curtain in advance, which can also play a role in heat preservation.

Whenever a cold wave hits, it is often accompanied by strong winds to cool down, so it is necessary to strengthen the greenhouse to prevent it from being blown away by the wind.

Plant antifreeze can also be sprayed. In short, there are many ways to use, learn from experience, welcome ** intelligent greenhouse planting system can help shed friends avoid this problem. Kaiyi intelligent greenhouse planting system can monitor the temperature and humidity, soil moisture, illumination, photosynthetic efficiency, carbon dioxide, illuminance and other data in the greenhouse, and transmit it to the cloud platform for processing through wireless technology, and display it in real time on mobile phones, computers and tablets.

Users can also control the wet curtain fan, sprinkler irrigation and drip irrigation, internal and external shading, top window and side windows, heating and supplemental lighting and other equipment in the greenhouse through the software platform. In order to realize the intelligent management of greenhouse planting, reduce the workload of users, and save the labor cost and management cost of users.

The management of greenhouse vegetables in winter is very important. It is necessary to carry out regular ventilation and drying, and pay attention to temperature control, otherwise severe frostbite will occur.

One is the temperature, the second is to maintain the freshness of the vegetables, and the third is to take into account the time of market transportation, neither too early nor too late, to ensure that the freshness of the vegetables in the hands of customers is not damaged or damaged.

Winter management of greenhouse vegetables is very important. Regularly ventilate and dry, pay attention to temperature control, otherwise it will cause severe frostbite.

Thicken the insulation layer, control the indoor relative humidity, increase the heat capacity of the soil, apply organic fertilizer, and pay attention to light.

Hello, shed vegetables antifreeze measures.

Enhance coverage. Buckle a small arch in the greenhouse, make an arch with a thin bamboo pole, cover the film at night, and cover the grass on the film; Cover the shed with mulch film to warm and moisturize. The bottom of the shed is made of plastic film as an apron, which can significantly reduce the invasion of cold air at the bottom; At the same time, pay attention to plugging the gaps in the shed to minimize the heat dissipation of the gaps.

On the north side of the greenhouse, crop straw is piled up to form a windproof barrier to protect from wind and cold.

Temporary warming. When the temperature in the greenhouse is lower than 15 during the day and 5 at night, cold damage or frost damage may occur. At night, temporary heating measures should be taken to artificially supplement the heat energy, that is, several briquette stoves should be placed in the shed to increase the temperature in the shed.

However, it is necessary to pay attention to prevent carbon dioxide poisoning, and when adding briquettes and taking out the coal stove, the greenhouse should be ventilated first, and then the person should enter.

Strengthen fertilizer and water management. Before and during the low temperature frost damage, the use of nitrogen fertilizer should be stopped to prevent the plant from being too soft and the cold resistance of the plant from declining and the fertilizer from killing the seedlings. Water dilute manure water in the shed to make the soil not easy to freeze and achieve seedling protection and cold protection.

Measures such as strengthening the thermal insulation of the greenhouse, ensuring the tightness of the greenhouse in daily management, thickening the insulation, and exploring the cold-proof area can well improve the temperature of the greenhouse. It is reasonable windproof. When the temperature is too high, take windproof measures in time, which can quickly reduce the temperature in the warehouse.

Failure to do so will cause harm to the crop. Proper wind protection can also reduce the humidity in the warehouse and prevent the occurrence of diseases. If the temperature in the river is too low, you can set up a fill light and a reflective film to increase the temperature of the greenhouse, and at the same time, it can also detonate the temperature increase at night, which is also effective for raising the temperature of the greenhouse.

Removing the dust on the greenhouse film in time, improving the light transmittance of the greenhouse, and increasing the light of the greenhouse can increase the temperature of the greenhouse to a certain extent.

Timely laying of mulch film can effectively increase the ground temperature, and the operation row spacing can also be spread with rice husk or straw, which can effectively maintain the ground temperature, maintain soil moisture, and help the growth of water roots. In addition, antifreeze can also be sprayed to effectively prevent cold damage of crops, and full nutrient leaf fertilizer can also be sprayed on the leaf surface, which is also effective in improving the resistance of crops. By using a bioreactor in a plastic greenhouse, the heat generated by the straw can be used to raise the ground temperature while contributing to the air temperature rise.

Studies have shown that comparing plastic greenhouses that use straw bioreactors to those that do not use reactors increases the temperature inside the warehouse by more than 2.

The temperature inside the warehouse is also greatly affected by weather and seasonal changes. In winter, when it rains for days, the temperature in the warehouse does not supplement the temperature during the day, and the temperature is too low at night to make the vegetables grow poorly. In summer, when the temperature is high and the weather is fine, please pay attention to temperature regulation to avoid nutrient consumption caused by small temperature differences, apprenticeships, etc.

According to the survey, due to the long-term shortage of water, the leaves of the plant are small, the mechanical tissue formation is more, the fruit expansion rate is slow, the quality is poor, and the yield is reduced. When the relative humidity of the air is below 40% or above 90%, photosynthesis is hindered, adversely affecting growth and development.