How to improve the cold resistance of vegetables? What s the best way to do it?

When many people grow vegetables, if they don't pay special attention to the cold resistance of vegetables, then we will also find that vegetables are easy to freeze to death. In order to improve the cold resistance of vegetables, we must first prepare vegetable greenhouses. Vegetable greenhouse is able to make the temperature in the greenhouse higher, and vegetables are not easy to be frozen to death, if there will be a phenomenon of heavy snow, then it is recommended that you best strengthen the skeleton, so that it is also to avoid heavy snow to collapse the vegetable greenhouse.

After the snow stops, you need to go and clear the snow quickly. You can also go to assist in heating, such as preparing some bath bombs, or preparing some automatic heating hair dryers and air additives, etc., which can make the temperature of the vegetable greenhouse higher, which can effectively avoid the phenomenon of vegetables being frozen to death. You can properly fertilize vegetables, and fertilizer can also make the vitality of vegetables more tenacious.

In fact, in some areas, if the temperature in winter is not particularly cold, not lower than minus 10 degrees, then we prepare the vegetable greenhouse, you can already protect the vegetables, but in areas such as the Northeast, you must carry out some auxiliary work, so that the vegetables can grow better. For vegetables that have already borne fruits, you can choose to drop the fruits first for ripening, because when the weather is cold, the vitality of vegetables itself is relatively weak, if you do not make these preparations in advance, it is also likely to lead to the death of vegetables, and the death is getting faster and faster.

You can choose to water before noon, and never after noon. The temperature of watering should be around 10 degrees Celsius, and do not water before or after the cold wave hits, as this will likely cause the temperature of the ground to drop, so it will make the vegetables more likely to freeze to death.

Mulch the vegetables on the land, which can increase the temperature of the soil; Usually apply more organic fertilizer, planting varieties to choose a relatively strong cold resistance, before the frost comes, in the wind with weeds, straw, litter and other accumulation of fire smoke.

I think it's best to choose cold-tolerant vegetable varieties and improve drought resistance by applying fertilizers; It is necessary to strengthen the mulch, clean the ditches regularly, maintain the appropriate temperature, pay attention to the permeability of the soil.

Cultivating seedlings with black plastic, with the effect of heat absorption and heat preservation during the day, seedlings in the standard greenhouse covered by multi-layer film, carbon elements can also be supplemented, and the outside temperature of the greenhouse with good performance of wind refining seedlings is about minus 10; Preparing hot fertilizer, cow manure is a mucilage-rich air permeable fertilizer, rooting pigment is used to irrigate vegetables.

Drawing on the cold and frost resistance measures of vegetables in previous years, vegetable farmers can not only do a good job in fertilization and watering in the vegetable seedling stage or vegetative growth period, but also cultivate vegetable seedlings with the help of the use of plant growth regulators, increase the stress resistance of vegetables, and achieve the purpose of cold and frost resistance. Colder weather means that the temperature is relatively low, and too low temperature will cause vegetables to take root and sprout, grow slower or even stop, and when the low temperature is relatively low, it may be frost damaged, and the recovery of growth is slow or even unable to resume growth.

<> then for planting vegetables, vegetables are most afraid of high temperature, high humidity and low temperature, these undesirable factors will lead to vegetable diseases, followed by after entering the autumn and winter, many vegetables can not resist cold, if we do not do in place in the cold-proof measures, repeated wind refining seedlings on sunny days: the outside temperature is about -10, and the maximum indoor temperature in the morning of a sunny day in winter can reach more than 32, it should be repeatedly ventilated, so that the temperature difference between indoor and outdoor is smaller, so that the plants slowly adapt to the environment and grow robustly. Improve the cold resistance of crops.

In the area of off-season vegetable production in winter, it is required to choose a place with a warm climate, abundant sunshine, low altitude or hills in the plain area, convenient water sources, suitable soil conditions, and as far as possible with wind barriers (such as northern alpine barriers or other buildings) for freezing treatment, which is often used for melons and nightshade vegetables. The method is to freeze the seeds to germinate at a temperature of about 0 degrees Celsius for 1-2 days, and then sow seeds, which can promote germination and enhance the cold resistance of seedlings.

The tomato or cucumber seeds that will germinate are placed at a lower temperature of 1-5 degrees Celsius for 12-18 hours a day, and then transferred to a higher temperature of 18-22 degrees Celsius for 12-6 hours, so repeated for several days, can significantly improve the cold resistance of vegetable seedlings, cover the greenhouse with a wall thickness of 1 meter, absorb heat and store temperature during the day, release energy at night accounts for 50% 60% of the room, soil heat absorption and heat release account for 20% 30%, and space heat storage accounts for 20% 30%.

You can make certain changes to the varieties of vegetables, and you can make genetic changes to improve the cold resistance of vegetables and achieve the results you want.

Earth up. Soil is cultivated around the roots of vegetables, and the roots and some stems of vegetables are wrapped in a thick layer of soil, which is less affected by cold climates, and people generally do this.

Of course, if the temperature is particularly low, the leaves are more susceptible to the influence than the rhizomes, so if the local temperature continues to drop to 10 degrees or a few degrees, you can consider using plastic mulch to protect the vegetables from frost damage.

Some vegetables are resistant to cold, what do you know?

1. Chinese cabbage.

Winter solstice Luobu Xiaohan vegetables" is a rural proverb that even local children can read aloud. It is said that the winter solstice season is the harvest of the basket in the field, and the light snow season is the harvest period of Chinese cabbage.

After everyone's local Chinese cabbage is obtained, vacate a few plants to take at home, and the others will be immediately dug in the vegetable garden to store the vegetable cellar, at first the head is up and down to the vegetable cellar to be placed, let the sun dry for a few days, and when it encounters rain and snow weather, cover and block, until the heavy snow solar term or the winter solstice, it will be filled with soil and completely filled tightly. In the spring of the following year, when the frozen soil thawed, it was removed and stored at ultra-low temperature, which was delicious and tasted the same as the fresh Chinese cabbage growing and developing in the field.

2. Leeks. Leeks can be said to be the sunny vegetables in the ordinary people's vegetable basket, and they are very good raw materials for making dumplings, buns, soups, and cooking vegetables. In the case of the decline of weeds in early autumn, outdoor leeks can grow and develop again in a small plastic greenhouse, and it is not a problem to eat one or two more stubbles.

In the early spring of the following year, the leeks first emerge from the tea buds, at this time the hoe is cut off the dead branches, the diversion canal is watered, the first stubble of leeks is well known, and the sales market will also sell at a good price. After the ultra-low temperature in winter, the leek root after returning to green in the second year shows a light purple color, which is often called purple root leek. The "head knife leek" and "purple root leek" often advertised by the food vendors in the sales market all refer to the first stubble of leeks in spring.

3. Spinach. Spinach is a kind of local village that is more deeply rooted in the masses, planted in mid-to-late October or early to mid-November before the winter, and the ambiguous winter situation in Jiaodong countryside in recent years is significant, and you can pick up a larger spinach seedling to eat in the first winter. Or in the countryside in winter, boil sweet potato porridge in a large iron pot roasted by firewood, add peanut kernels, soybeans, etc. into the pot, and finally put a few spinach seedlings, which can be said to be the finishing touch, the sweet sweet potato aroma, plus the green spinach, people drink bowl after bowl.

All in all, in your local villages, even in the cold winter, the shallots, garlic, spinach, leeks, Chinese cabbage, and all kinds of vegetables and fruits with strong cold-resistant work ability in the vegetable garden are also fully distributed. Ordinary people live at home, save money to be bland, the old saying is right: eat not poor, wear not poor, prepare not the previous generation poor, this is the truth.

Cold-tolerant vegetables include radish, Shanghai green, lettuce, celery and spinach, etc., these vegetables are in the harvest period in autumn and winter, radish and Shanghai green can withstand low temperatures of minus 2-3, lettuce can grow at a low temperature of 0 in the short term, celery adults can withstand low temperatures of -7 -10, and these vegetables should not be planted in summer.

Chinese cabbage, leeks, green onions, garlic, snow red, coriander, radishes, etc., these vegetables have a certain ability to resist cold, but you should also pay attention to heat preservation when planting.

Cabbage, leeks, spinach, garlic, onions, black cabbage, celery, coriander, and white radish are all very resistant to cold.

Cabbage, leeks, spinach, winter melon, and oily wheat cabbage are particularly resistant to drought, and they are generally grown in winter, and they are also more suitable for the weather in the north.

Chinese cabbage, leeks, green onions, winter melon oil, wheat cabbage, spinach, etc., are all such plants, which are very suitable for planting in winter.

1. Chinese cabbage.

Lidong radish and small snow cabbage" is a rural proverb that even our local children can recite catchily. It is said that the beginning of winter solar term is the green radish harvested in the field, and the light snow solar term is the harvest season of Chinese cabbage.

After our local Chinese cabbage is harvested, set aside a few to eat at home, and the rest will be directly dug in the vegetable cellar for storage, first placed in the vegetable cellar with the head up and the roots down, let the sun dry for a few days, encounter rain and snow, cover and cover, until the heavy snow solar term or the beginning of winter, will be covered with soil and completely filled tightly. In the spring of the second year, when the permafrost layer melts, it is taken out and stored at low temperature, and the taste is delicious, and the fresh Chinese cabbage growing in the ground has the same taste.

2. Leeks. Leeks can be said to be the evergreen vegetables in the people's vegetable basket, and dumplings, buns, soup, and stir-fry are all good raw materials. In late autumn, when the grass decays and the grass is barren, the open-air leeks can continue to grow under a small arch shed, and it is not a problem to eat one or two more stubbles.

In the early spring of the second year, the leeks are the first to drill out of the bud tip, at this time hoe off the dead leaves, water irrigation, the freshness of the first stubble leeks is obvious to all, and the market will also sell well. After the low temperature in winter, the roots of the leeks after returning to green in the second year are light purple, and people are often called purple-root leeks. The "head knife leek" and "purple root leek" that vegetable vendors often shout at in the market refer to the first stubble of leeks in spring.

3. Spinach. Spinach is a more down-to-earth variety in our local countryside, sown in mid-October or early November before wintering, the warm winter phenomenon in Jiaodong countryside in recent years is obvious, and you can pick up larger spinach seedlings to eat in the first winter. Or in the countryside in winter, the firewood pot boils sweet potato porridge, adds peanuts, soybeans, etc., and finally puts a few spinach seedlings, which can be said to be the finishing touch, the sweet sweet potato fragrance, plus the tender green spinach, makes people drink bowl after bowl.

In short, in our local villages, even in the harsh winter, the onions, garlic, spinach, leeks, Chinese cabbage, etc., all kinds of vegetables with strong cold resistance in the small vegetable garden are also fully arranged. Ordinary people live at home, careful planning can be a long stream, the old saying is good: food is not poor, clothing is not poor, planning to be less than a generation of poor, this is the truth.

The cold-resistant vegetables I know are leeks, coriander, green onions, and garlic, and the cold-resistant properties of these vegetables are still relatively good.

Vegetables with good cold resistance include leeks, green onions, raw garlic, and coriander. And many people love to eat these vegetables.

The understanding is more comprehensive, because I usually like to cook, so I have a more comprehensive grasp of the efficacy of some vegetables.

(1) Nitrogen control method. At the seedling stage, the amount of nitrogen fertilizer should be appropriately reduced, and nitrogen fertilizer should not be applied partially; Top dressing should be done early to promote the growth of vegetable seedlings. Before low temperature, fast-acting nitrogen fertilizer can not be applied, and phosphorus and potassium fertilizer should be applied once.

2) Organic fertilizer application. Warm farm manure such as pig and cow manure or soil miscellaneous fertilizer can be cultivated in the root neck of vegetable trees, which can increase the soil temperature of the roots2 3. Fertilization should be carried out on sunny days, with 1000 1500 kg per mu.

3) Coverage method. In the afternoon before the frost, covering the vegetable box and vegetables with straw and straw can reduce the mechanical damage of wind chill. 100 kg of straw per mu, which should be sparsely scattered, and the vegetables must not be covered completely, so as not to affect photosynthesis.

4) Soil cultivation method. Combined with tillage before freezing, the roots of the soil can be cultivated with broken soil, which can not only loosen the soil, but also increase the soil temperature and directly protect the root system. However, cultivating soil must be carried out before the soil is frozen, and the depth is 7 10 cm.

5) Scattering of ashes. Before the arrival of low temperature frost damage, sprinkle a thin layer of chaff ash or plant ash on the vegetables; Or sprinkle 50 kg of grass ash or fire soil ash between the rows of vegetables, which can not only prevent cold and frost, but also increase fertilizer, and can better prevent and control the root rot of cruciferous vegetables.

6) Wind barrier method. In the north of the vegetable compartment, a 1-meter-high windproof barrier is made of crop straw, etc., and a windproof barrier is set up every 3 or 4 compartments.

7) Spray antivapor agent method. 3 4 days before the cold snap, choose a sunny day to spray 30 40 times of the liquid petroleum vapor inhibitor on the plant, which can form an invisible cold-proof film on the leaves, which is conducive to reducing the transpiration of the leaves, protecting the body temperature of vegetables, and achieving the purpose of cold-proofing.

8) Drainage. Open the "three ditches" to ensure that the ditches are unblocked, so as to remove frozen water in time.