What to do if the plants in the vegetable greenhouse can t see the sun in winter?

The simplest is to hang incandescent lamps in the shed.

Tungsten lamp. In addition to installing lights in the shed, there can also be some auxiliary measures: first, when choosing a film, you must choose a high-quality shed film, and wipe it frequently. The quality of the greenhouse film directly affects the intensity of light transmitted.

and light quality, so it is necessary to choose high-quality shed film. After choosing the shed film, you should also pay attention to wiping the shed film frequently, vegetable farmers can save the time of wiping the film, you can tie the cloth strip above the shed film, the general width is 5-7 cm, the length is best than the width and length of the greenhouse, the cloth strip will swing back and forth with the wind, to achieve the purpose of wiping the shed film.

Secondly, the layout of the vegetables in the shed should be adjusted. Root sunlight.

The angle of incidence in the shed, the direction of the vegetables in the shed should be in the north-south direction, and the vegetables should be adjusted to the south low and north high when hanging vines and pruning, so as to make the vegetables better accept the light.

Thirdly, the aluminized reflective curtain can be hung to increase the light intensity of the lower part of the plant and the ground, and increase the reflective light. Many vegetable farmers have reported that because of the hanging of aluminum reflective behind the curtain in the past few years, they cannot see its effect, so the number of users has decreased significantly in recent years, in fact, this is a wrong understanding. Due to the dense planting of crops in the greenhouse, the field canopy is closed, which is not conducive to the photosynthesis of the lower leaves of the plant.

Directly affect the yield of crops, hanging the aluminized reflective curtain and increasing the reflective light can solve this problem well.

In addition, it is also necessary to pay attention to the timely ventilation and dampness after watering to reduce fogging and water droplets in the shed film. After watering, the humidity in the greenhouse increases, and if the wind is not released in time, it will cause the greenhouse film to fog up and form water droplets, which cannot ensure the smooth progress of crop photosynthesis. Therefore, after watering the greenhouse, even if the temperature is low, it is necessary to ventilate briefly to expel the moisture in the shed.

Light bulbs can be used instead of door-mounted plant fill lights.

Iodine-tungsten lamps can raise the temperature.

The most important role of the greenhouse is to keep warm, in winter, the temperature of the greenhouse during the day is generally 10 degrees higher than the outdoor temperature, and then the greenhouse will save the temperature, and the temperature in the greenhouse will be 5---10 degrees Celsius higher than the outdoor temperature at night. And in the early stage, increasing the temperature in the greenhouse can increase the accumulated temperature, and the vegetables and crops in the greenhouse will grow faster, which will be about a month earlier than outdoor open-air planting and cultivation.

Vegetables are grown in greenhouses for the sake of the morning market, or to make out-of-season vegetables. Most of the greenhouses in the south are steel structure film greenhouses, while the greenhouses in the north are mainly solar greenhouses. This is because the temperature in the south is generally not lower than zero, generally in early spring in this simple steel frame greenhouse can play a role in keeping warm, in early spring planting in order to prevent frost damage and spring cold, generally in the greenhouse will add a layer of small arch shed.

This will play a good role in heat preservation and is more conducive to the growth of plants.

Then there is the greenhouse in the north, due to the relatively low outdoor temperature in the north, it will generally be built on the shady side of the greenhouse, that is, a wall will be built on the back, it used to be a mud wall, and now it is generally used as a cement brick wall or a wall of thermal insulation materials, and a layer of insulation will be added to the outside of the greenhouse, and the insulation will be taken down at night, and then the temperature will be generated in the greenhouse, and it is no problem to plant vegetables in winter.

In addition, there are conjoined greenhouses, the space of conjoined greenhouses is relatively large, conjoined greenhouses are more suitable for mechanized operation, the utilization rate of land is also higher than that of single greenhouses, colleagues even the structure of the greenhouses is more stable, wind resistance is also better, of course, a penny of price, relatively ** is also relatively high.

In addition to keeping warm and warm, the greenhouse also has the function of sheltering from the rain, and many vegetables will cause the fruit to fall and crack if it encounters heavy rain when bearing fruit. The greenhouse solves this problem very well. At the same time, the greenhouse also has the effect of reducing the poisoning of pests and diseases, and adding insect nets around the greenhouse can effectively reduce the pests and diseases in the greenhouse.

The above is my understanding of greenhouses

Because the temperature in the greenhouse is very high, and it also helps the growth of vegetables, it is also possible to grow vegetables in the greenhouse in winter.

Because the temperature in the greenhouse is relatively high in winter, the growth of vegetables needs a normal temperature, so it can be grown.

Because the temperature in the greenhouse is relatively high, the temperature difference between day and night is relatively small, and the humidity is relatively high, it can provide a particularly good production environment for agricultural products.

Because the temperature in the greenhouse is suitable in winter, the sun is shining, and the water source is abundant, which is very suitable for growing vegetables. The temperature in the greenhouse has also been scientifically investigated, so you can grow vegetables.

Because the temperature in the greenhouse is not very cold, it can be adjusted, so you can also grow vegetables.

Summary. In a greenhouse where you can't see the sun, there is no better way to grow leeks and garlic, two vegetables that can grow in a dark environment and are very nutritious.

Leeks are a vegetable, those who have planted vegetables must know very well, and leeks look the same, but the leaves are different, leeks are green, and the leaves of leeks show the color of stem white and leaf yellow without photosynthesis, so it is named "leek yellow".

They do not need direct light and can grow with scattered light.

What to raise in a greenhouse where there is no sunlight.

The greenhouses that can't see the sun are none other than leeks and garlic, which can be grown in a dark environment and are very nutritious. Leeks are a vegetable, those who have planted vegetables must know very well, and leeks look the same, but the leaves are different, leeks are green, and the leaves of leeks have no photosynthesis, so they show the color of white stems and yellow leaves, so they are named "leeks" They do not need direct light, and they can grow with scattered light. I hope that the sedan chair can help you.

Hope mine is useful to you.

My greenhouse has solar panels on it, so there will be light but no sunlight.

Wait a minute, dear.

You can grow some tea.

Hello, dear, I am glad to answer for you, practice has proved that if the greenhouse collects more sunlight, it plays an important role in improving the yield and quality of vegetables. 1. When planting different kinds of vegetables in the greenhouse with a reasonable layout, the principle of "high in the north and low in the south" should be followed, so that the height of the plants is scattered and orderly, and the phenomenon of blocking each other is minimized. Transplanting the same kind of vegetables, strive to make the size of the seedlings consistent, make the plants grow neatly, and reduce the shading between the plants.

At the same time, it is better to plant furrows in the north-south direction to make them accept sunlight as much as possible. 2. Keep the shed film clean. Water droplets, dust and other debris on the greenhouse film will reduce the light transmittance by about 30%.

After 2 days, 10 days, and 15 days of use next to the new film section, the light in the greenhouse will decrease by % in turn. Therefore, it is necessary to clean frequently, rinse the dust, dirt and water droplets on the shed surface, and keep the membrane surface clean to increase the transparency of the shed film. Snow should also be swept away in time on snowy days.

Third, the selection of non-dropping film, the non-drop film in the production of the formula added several expressive agents, so that the affinity between water molecules and the film is greatly weakened, and the water droplets flow into the ground along the film surface without water droplets. The use of non-drip film buckle shed can increase the light intensity in the greenhouse and increase the greenhouse temperature. Fourth, reasonable uncover the straw curtain, on the premise of doing a good job of thermal insulation, appropriately remove the straw curtain and delay curtain for thermal insulation in advance, which can prolong the light time and increase the amount of lighting.

Generally, the curtain is lifted an hour after the sun comes out, and the curtain is closed half an hour before the sun sets. Especially on rainy days when the rain stops, the curtain should also be properly opened to make full use of the scattered light of the sun. 5. Set up a reflective curtain, with an aluminized film reflective curtain with a width of 2 meters and a length of 3 meters, and hang it on the north side of the greenhouse to make it vertical to the ground, which can brighten the ground by about 40% and increase the shed temperature by 3-4.

In addition, laying silver-grey mulch on the ground can also increase the light intensity between the plants. Sixth, do a good job in plant arrangement, timely pruning, branching, vine binding, old leaves and other field management, is conducive to the greenhouse ventilation and light transmission conditions. I hope this service can help you, thank you for your consultation, and I wish you all the best!

Hello, dear, how to water vegetables without greenhouses in winter? Answer: First, according to the soil moisture according to the soil conditions watering is very important, if the soil is not lacking, you also water a lot, it will seriously affect the permeability of the planting * soil, resulting in roots.

Second, according to the weather in general, sunny watering is the best, a few days after watering are sunny is the best, if watering is the rainy season, then it will lead to an increase in the probability of disease, so we can judge according to the weather forecast before watering. One point that everyone needs to pay attention to here is that if it has been cloudy before, it is not possible to water it when it suddenly clears. 3. Timely watering is suitable for the average daily temperature of vegetable growth, which is 22 degrees.

In winter, the ground temperature is mostly around 18 degrees. If you water too much or at the wrong time, the low temperature will also drop, and the roots of the vegetables will be damaged by frost. Watering at ground temperature, preferably in the morning, after the grass has been pulled apart.

Watering, but also to check the condition of the soil. It is enough to keep the soil moist and not to water it too often. If you water too much, the greenhouse will also become cooler, and the ground temperature will also drop, which is not conducive to the growth of vegetables.

When watering, it is best to pour small water or drip water from a kettle.

Greenhouse is not used for heat preservation, if the temperature is not enough, greenhouse is a good choice.

If the light is insufficient, you can turn on the lights in the greenhouse, which is just as useful. You can also adjust it according to the frequency and intensity of the light you need for the dish.