Can the vegetables in the ground be covered with leaves for the winter?

The vegetables that can be planted in the north in winter, in addition to the greenhouse, can be planted in the open air are very few, even if there are some hardy vegetables that can be planted, it is also necessary to carry out some simple thermal insulation treatment, in order not to be frozen to death, like the southern end of Hebei here in Bang Benba, the vegetable garden in winter.

Basically, they are empty, and there are only a few vegetables that can grow, and they all need to be covered with leaves or straw, so that the simple warmth effect can allow these vegetables to continue to grow, what vegetables are there?

We have a saying here called: the beginning of winter, the soil does not grow, after the beginning of winter, the ground temperature has completely dropped to the point that the seeds can not germinate, so it is also called the soil does not grow, the soil has no temperature that can germinate the seeds, so even some vegetables that can grow in winter, the sowing time is also before the beginning of winter, not too late, it is impossible to germinate and grow very late, vegetables that can grow in winter, we have here:

Lettuce: This is a very common vegetable in the north, the rhizome is crisp and crisp to eat, the juice is abundant, after cutting into thin strips, it is a very appetizing cold dish, the leaves can also be edible, the taste is sweet, nutritious, it is also a vegetable that likes a cool environment, planted in late autumn, when it sprouts, the temperature drops, it is necessary to use some warm items to cover, in order to avoid lettuce from being frostbitten by the cold temperature, there are also the use of leaf straw, there are also the use of simple small arch shed, simple warmth measures, This allows the lettuce to continue to grow during the winter.

Coriander: As one of the few vegetables that can continue to grow in winter, coriander is the largest number of plants in our place, everyone loves to plant in the courtyard or vegetable garden, with a small piece of land, planting coriander, it can meet the winter food of the family, the taste is fresh and tender, the fragrance is strong, the coriander can grow in a 5-degree environment, the cold resistance is super strong, after germination in late autumn, as long as a certain cover is given, keep the environment not freezing, coriander can continue to grow, and some are picked during the New Year, Planting is also extremely convenient and easy.

Spinach: It is also one of the few vegetables that can be grown in winter in the north, spinach as one of our favorite greens, the taste is also very tender, and it is rich in iron.

It is extremely beneficial for the body, and eating spinach is also in the northern region.

Winter and spring eat the most vegetables, spinach grows vigorously, the maturity cycle is short, the yield is high, in the north of the winter vegetable garden is extremely common, some will be planted in the wheat field, the use of crushed corn stalks covering, winter can continue to grow, some in the vegetable garden is the use of cow dung, leaves piled up, spinach will not be frozen to death.

Let me talk about the overwintering management of vegetables in the north. Because I am a northerner, I don't know much about the overwintering management of vegetables in the south.

In addition to the winter warm vegetable greenhouses in the north, there are several kinds of vegetables that can be overwintered, such as: open-field leeks, spinach, shallots, garlic, onions, etc., these vegetables are cold-tolerant, and they can grow as usual in spring after wintering. However, although these vegetables are hardy, they can freeze to death in the cold winter if they are not protected and managed!

Therefore, experienced vegetable farmers also strengthen the management of these vegetables they grow before winter.

Leeks and shallots.

There are two overwintering management methods for these two vegetables.

1. Cover the wintering arch shed.

Leeks and shallots can be covered with overwintering arches. In this way, in winter, leeks and shallots can grow as usual in the shed, forming yield and yielding benefits. After the shed is built, two layers of shed film can be used, which can increase the temperature of the shed, and it can be new and old.

Cover the grass fence at night to keep it warm, and solve it during the day to transmit light and increase temperature. When the temperature exceeds 25°C, ventilate in time.

After the greenhouse is built, the vegetables should be watered and fertilized in a timely manner to strengthen the prevention and control of pests and diseases. Wintering this vegetable can be very good.

2. Overwintering management of leeks and shallots that do not need to be shedned.

Before winter, it is necessary to water frozen water and apply compound fertilizer. In this way, winter is conducive to the growth of vegetable roots and the accumulation of nutrients. Those with soil fertilizer or plant ash can be sprinkled before freezing to help leeks or shallots safely overwinter.

You can also cover some firewood or grass fences. Because, leeks and autumn-sown shallots are very cold-tolerant. This way the management is fine.

Autumn garlic and onions.

Autumn garlic and onions are both planted in the autumn cold dew season. It is generally covered with mulch when planting. In winter, it is enough to pour frozen water once before freezing. When pouring frozen water, pay attention to the sudden and violent cooling of the weather and do not pour frozen water, which has avoided freezing damage. Watering during the day and not storing open water on the surface at night.

Methods of overwintering vegetables in the open field.

1. Reduce the amount of nitrogen fertilizer at the seedling stage of the nitrogen control method, and do not apply nitrogen fertilizer partially, so as to avoid poor cold resistance of plants. Top dressing should be done early to promote the health of vegetable seedlings. Before low temperature, nitrogen fertilizer can not be applied, and phosphorus and potassium fertilizer should be applied once to enhance cold resistance.

2. Apply organic fertilizer method with warm farm fertilizer such as pig and cow manure or soil miscellaneous fertilizer, circle culture at the rhizome of vegetable trees, fertilization should be carried out on sunny days, and apply 1000 1500 kg per mu.

3. The manure pouring method pours 400 500 kg of thin manure per mu before frost to make the soil not easy to freeze.

4. Combined with cultivating before freezing, the soil can be loosened and the soil temperature can be directly protected. However, cultivating soil must be carried out before the soil is frozen, and the depth is 7 10 cm.

5. Mulching method in the afternoon before the frost, cover the vegetable furrow and vegetables with straw and straw, 100 kg of straw per mu, sparsely scattered, and the vegetables must not be covered to prevent the impact of photosynthesis.

6. Ash sprinkling method: sprinkle a thin layer of chaff ash or plant ash on vegetables before the arrival of low temperature frost damage; Sprinkle grass ash between the rows.

7. The smoke method is stacked into piles with weeds, straw, dead branches and fallen leaves, etc., and the smoke is lit at the corner of the upwind before the frost comes, which can dispel the cold current.

Putting leaves in the spinach field in winter and autumn can indeed have a certain thermal insulation effect, but it is better to cover some with cotton cloth. If possible, you can choose to cover the plastic greenhouse, so that the insulation effect will be better.

Yes, humus soil is weakly acidic and conducive to the growth of plants and vegetables, but its fertility is very limited.

There is a difference between open field cultivation and pot management.

Vegetable farmers generally put the yellow rotten leaves in the open space after harvesting, and then plough the land and press the rotten leaves into the soil. But there are two points: 1, spread out in the ground, not stacked together; 2. Do not put it on a plot with vegetables.

No matter how good it is, rotten and hot plants are easy to burn roots.

1. Build 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.

2. Choose vegetable greenhouse film with good light transmittance.

The most widely used in production is polyvinyl chloride long-life non-drip film, which has good light transmission and thermal insulation performance. At the same time, the surface of the film is cleaned weekly to maintain good light transmission.

3. Use straw bioreactor to increase temperature.

According to the size of the cultivation furrow, dig a ditch with a width of 60-70cm and a depth of 25-30cm, fill the straw, and place a special microbial agent of 8kg 667m2, cover the straw with soil about 20cm, 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.

4. Use reflective curtains to increase temperature and supplement light.

Hang the reflective curtain on the north side of the greenhouse cultivation furrow or against the back wall, so that it is appropriate to keep it at 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.

5. Use the light source to manually fill the light.

Artificial supplemental light, the lamp source should be fluorescent lamp, high-pressure mercury lamp, arc xenon lamp as well, 40 watt fluorescent lamp 3 together, 45 cm away from the seedlings, the light intensity is 3000lx-3500lx, 100 watts of high-pressure mercury lamp 80 cm away from the seedlings, the light intensity is 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.

6. Dig cold-proof ditches for insulation.

At 100cm at the back wall of the greenhouse, 10cm in front of the shed dig a cold-proof ditch with a width of 40cm and a depth of 50-80cm, fill the ditch with weeds, sawdust and other substances, and cover it with plastic film to insulate the heat dissipation of the indoor soil to the outdoor frozen layer, so as to achieve the purpose of heat preservation.

7. Other technical measures.

In addition, the selection of low temperature resistance, weak light, stress resistance, strong growth of vegetable varieties, increase the application of organic fertilizer, reasonable watering, timely removal of aging and dead leaves, plastic film covering, covering thickened grass or quilt, scientific cover of grass or quilt, timely cleaning of snow and pollutants on the film are very important temperature and heat preservation and light supplement technical measures for the production of vegetables in winter solar greenhouse.

OK.

In winter, in addition to low temperatures, there will often be strong winds, clouds, heavy snow and other disastrous weather, which will cause great damage to the growth of vegetables, so pay attention to listen to the weather forecast, take preventive measures and post-disaster treatment as soon as possible, and reduce the losses caused by disaster weather.

1. How to prevent severe cold. The cold current invasion is easy to cause serious damage to the vegetables in the greenhouse in the deep winter, and the following methods can be taken in case of severe cold, one is multi-layer covering, which can be covered with a layer of film on the grass, and can also be set in the shed to increase the thermal insulation effect; The second is to dig a cold-proof ditch outside the shed as early as possible, which can increase the temperature in the shed by 2-3 degrees, and pay special attention to spraying 2116 anti-stress and anti-freezing damage before the cold snap comes. Don't water a lot, the water temperature is too low in winter, if there is no light in the shed when the cold current changes after watering, the shed temperature is low, and the ground temperature is difficult to recover, which will cause vegetable rotten roots, dead trees or roots and lead to the epidemic spread of various diseases.

2. How to prevent even yin. If there is even cloudy weather, as long as the temperature is not too low, the grass curtain should be lifted. If the sun is exposed for a short period of time, the temperature in the shed will rise.

Hanging a reflective curtain on the back wall of the greenhouse will also play a role in brightening and warming when it is cloudy. When there are many cloudy days in winter, the mulch film should be covered early, which can increase the ground temperature and reduce the occurrence of low temperature frost damage. The temperature in the greenhouse in winter should be kept above 12, and when the temperature is too low, heating measures such as electric heating and coal furnace heating can be taken.

3. How to prevent snowfall. When it snows during the day, you don't need to cover the straw, sweep the snow off the shed immediately after the snow stops, and cover the straw with a film in the afternoon to strengthen the heat preservation. After the snow stops the next day, the snow should be cleared in time to keep the grass dry, and the seedlings should be seen in time when the temperature permits.

If it suddenly turns sunny after continuous cloudy and snowy weather, it should be pulled at intervals or opened by one-third first, and pay attention to the changes in the seedlings, and if you find wilting, cover the grass immediately, and then pull it away after recovery, just in case"Flash shed"。If wilting has been caused, Tianda 2116 Zhuangmiaoling should be sprayed on the leaves immediately to close the leaf stomata and weaken the transpiration of vegetables, which is conducive to the rapid change of wilting state of the plant and return to normal.

Fourth, remedial measures after freezing. First, after the greenhouse vegetables are frozen, the shed can not be closed immediately to raise the temperature, and the temperature in the shed should rise slowly to avoid the necrosis of the frozen tissues of the vegetables due to the rapid rise in temperature. The second is to cut off the frozen stems, leaves and fruits in time to avoid moldy lesions and diseases in the tissues.

Third, the water-soluble fertilizer of Caifa amino acids can be used to improve the cold resistance of crops and ensure rapid development.

No.

If there are fruits and vegetables planted in a normal greenhouse, you can't spend the winter in it, because plants will produce a lot of carbon dioxide during photosynthesis.

If you don't grow vegetables, you can't live in it, because there are no heating facilities, and the greenhouse is just a simple shelter from the wind and rain for several years, and there are no reliable winter facilities.

Crops can survive the winter in it, but people can't live in it.