What is the impact of the winter cold wave on the growth of crops? What are some good ways to keep c

It does not have much effect on some crops that prefer winter climates, but it does affect vegetables, which are very afraid of frost and severe cold. This requires growers to take protective measures, such as covering vegetables with mulch, finding ways to make fires in the shed to keep them warm, and raising the temperature to allow vegetables to grow normally.

Cause the death of crops, affect the yield of crops, will bring great harm to crops, there is no way to grow normally, you can carry out soil cultivation, the plants in the greenhouse can increase the temperature, can heat up, you can choose cold-resistant varieties.

There is a serious impact, it may lead to lower and lower yield and quality of crops, it may affect the normal growth of crops, there may be pests and diseases, it can be covered with mulch, and it can be planted in greenhouses.

Greenhouse crops, outside the shed can be covered with grass sheets, one is conducive to snow removal, and the other is anti-freezing and warm! The shed can be covered with multiple membranes or use hot blast stoves and environmentally friendly warming blocks to increase the temperature.

Straw can be covered in the field, which can effectively reduce the invasion of cold wind; You can also sprinkle some cold-proof fertilizer; It can also build greenhouses; Burn some dead branches next to the crop and use smoke to keep warm.

Use greenhouse crops to reduce cold wave disasters and improve yield and quality. Trees can be painted white, and quicklime can be used to reduce the temperature difference between day and night and reduce frost damage. It can also be fertilized and cultivated to increase the surface temperature and enhance the cold resistance of the tree.

You can fertilize crops, so that you can also do the role of cold protection, or watering, of course, you must also remember to drain water in time, otherwise it is not good for crops, and you should also be exposed to sunlight.

If the crops want to protect themselves from the cold in winter, you can first make it into a greenhouse, and then you can also sprinkle some straw on the crops, which can effectively play a role in keeping out the cold.

Timely irrigation before freezing, mulching film and straw, increasing the application of thermal fertilizers, spraying cold-proof agents and other measures; For mature vegetables, they should be harvested in time; For those who have been severely affected, it is necessary to strengthen management, and when the weather warms up, it is necessary to pay close attention to land preparation, replant and replant short-term leafy vegetables that are resistant to low temperatures, and resume production as soon as possible.

It has a great impact on the development of agriculture, and this will likely lead to a decrease in the yield of agricultural products, and will also affect the harvest of crops, and will also lead to a decrease in economic returns, and will also lead to a lot of vegetables or some agricultural products are affected by frost. If you want to prevent frost damage to crops, you should pay attention to the temperature setting, and you should also plant in greenhouses, and you should also provide some heating measures.

The cold spring cold will seriously affect the income of crops, and it will also affect the quality of agricultural products. It will also affect the overall harvest of agriculture, and at the same time, it will also make the growth of crops poor. In the end, it will also have a serious impact on the overall profitability of agriculture.

Causing huge economic losses. If you want to prevent frost damage to crops, you should store them in greenhouses. The concentration of protoplasm in cells should also be increased before the onset of cryofreeze damage.

The impact on agriculture is very large, a lot of crops are no way to grow, and a lot of fruits are also no way to bear fruit, caused a great impact, but also will reduce people's living standards, first of all, when planting crops, we must choose a good weather, and then try to choose some stable time to plant, if the crops are frozen, we choose to set up greenhouses is also very good.

Cause early rice rotten seeds, rotten seedlings, dead seedlings, not only lose a lot of seeds, but also delay the sowing season, delay the maturity of early rice, and affect late rice planting. To do a good job of keeping warm, you can plant in the greenhouse, and when there is a temperature difference, you can make timely adjustments.

It is very likely to cause plant death, affect the normal growth of plants, affect the yield of plants, and cause serious damage to plants.

Generally speaking, the effects of the inverted spring cold on many crops are many, and the effects are different according to the characteristics of different crops, because some crops such as tobacco will have early flowering.

1.Northern China was hit by a cold wave.

impact. Temperatures can drop above 10 in a day and lows below 5, which will have the greatest impact on agricultural production. Many farmers in these areas grow vegetables in greenhouses.

If there is no heat preservation measure for vegetables when the cold wave hits, the vegetables in the greenhouse will be affected by the cold wave weather, which is easy to cause frostbite, resulting in curl of leaves, slow growth, loss of young fruits, and deformation of fruits. At the same time, affected by the cold wave, the vegetables in the market will also begin.

2.Affected by the cold wave in southern China, tea tree buds and tropical fruit trees such as bananas, jujubes, and lotus mist.

And loquat cultivation in some areas of southern China will suffer from cold spells and freeze damage, and winter wheat jointing and rapeseed.

It's easy to freeze if you lick it all the time. The cold wave will also be in south-central and southern China.

Causing heavy rainfall.

As a result, the soil in some low-lying areas is moist, causing moisture damage. Therefore, it is necessary to do a good job of prevention.

Cold. There is usually a low pressure before it acts as its guide, so when a cold front approaches, it is not a strong northwesterly wind blowing first, but a weak southerly or southwesterly wind. Therefore, during the cold winter, unusually warm weather with southerly winds is a harbinger of cold periods.

China's meteorological department can be more accurate in the cold wave and can prepare for freezing in advance, which is of great significance for ensuring agricultural harvest. Here are the agricultural defenses to take in case of a cold wave:

1. Due to the strong wind of cold air, scaffolding.

The facilities should be strengthened to prevent the scaffolding from collapsing or the wind opening the membrane from aggravating the frost damage, and do a good job in temperature and humidity control.

2. Rapeseed, green manure and low-lying citrus orchards should pay attention to drainage to prevent water from freezing and aggravating frost damage; Leafy greens can be covered with straw to reduce the risk of freezing.

3. Vegetable or flower greenhouses are covered with straw mats, double-layer films and other insulation materials to increase the temperature in the shed.

4. Livestock farmers should do a good job in the cold insulation of poultry houses, and should also increase the light time of poultry houses to improve the egg production rate; Adjust the water temperature of the pond and reduce the amount of bait appropriately.

If the vegetables are not kept warm when the cold wave hits, the vegetables in the greenhouse will be affected by the cold wave weather, which is easy to cause frost damage, resulting in leaf curling, slow growth, young fruit falling and fruit deformity. Farmers should take measures to keep vegetables warm in advance, such as greenhouse vegetables.

The impact is very large, it will cause the growth of plants to be affected, it will cause the yield of plants to be affected, it will bring great harm to plants, and it will affect the harvest of plants.

There are many farmers in these areas who grow vegetables in the greenhouse, if the cold wave hits, there are no thermal insulation measures for the vegetables, the vegetables in the greenhouse will be affected by the cold wave weather, easy to cause frost damage.

Cold spells can cause massive frostbite to death in crops, resulting in a significant reduction in crop yields. It will also cause the local agricultural economy to decline. When the cold wave comes, farmers should spread insulation film or hay on the crops in advance to keep warm.

The cold wave is caused by the fast-moving cold front, which can cause a wide range of drastic cooling in most areas of China, especially in the autumn and spring when the crop is ripe and growing, and the frost damage caused by the crop maturity and growth period is the most harmful to crops.

The cold wave is the main disaster weather in winter and spring in China, and most parts of China, from late autumn to early spring of the following year, are often attacked by strong cold air from the north. When the strong cold air hits, the north wind blows strongly, the temperature plummets, sometimes accompanied by wind, sand or rain and snow, and frost, which brings certain hazards to production, transportation and telecommunications. Due to the topography and geographical location, the impact of the cold wave on various parts of China is also different.

The north is greatly affected by the cold wave.

Winter is here, and cold weather always takes a toll on our crops. In order to reduce this harm, we can actually use the method of greenhouse crops.

Greenhouse off-season vegetables are the main winter vegetables in our lives**; At the same time, planting fruits and vegetables in greenhouses is conducive to their rapid growth, more conducive to staggered peak listing, and can be sold at a good price, so many farmers choose to grow vegetables in greenhouses. So, when a snowstorm comes, how do we manage the external structure of the greenhouse and the crops in the greenhouse?

1.Remove snow to prevent the shed from collapsing.

Measures to be taken before snowfall: Pay attention to the weather forecast in time before snowfall, and strengthen the structure of the shed. For vegetable greenhouses with columns, check whether the columns are upright in time and whether the connection between the columns and bamboo poles or steel pipes is firm.

If it is loose, it should be re-tied in time; But generally speaking, the steel frame structure is relatively strong and has strong compression resistance! In addition, some greenhouses can also be covered with grass blankets in advance, which is conducive to snow removal and heat preservation on the one hand!

Measures to be taken after snowfall: After snowfall, you should pay attention to the structure inside the shed and the snow outside the shed in time. In general, we should sweep the snow.

On the one hand, we should pay attention to the carrying capacity of the shed. If the snow is really severe, we have to move the crops in time and take a film-cutting approach to protect the canopy hyacinth to minimize the loss! Farmers don't have to worry about partial loss of vegetables and losses due to the risk of greenhouse collapse!

2.Heat in the shed to prevent frost damage.

For greenhouse vegetables, when grown in the off-season, the temperature is relatively low, especially when it is snowing and melting. We must do a good job of heat preservation, heating and anti-freezing of greenhouse vegetables! At the same time, we should also do a good job in the lighting of some vegetables to promote the normal photosynthesis of vegetables!

For every 1 degree increase in temperature in the greenhouse, the air humidity in the greenhouse can be reduced by 3-5%. In general, thermal insulation measures can be taken; The shed is covered with thermal insulation, and a small arch shed can be set up in the shed, and temporary heating facilities such as heaters, electric hot air, electric lights, bath bombs, and stoves can be added to protect the crops in the shed. However, it is not recommended to use an open flame to avoid gas poisoning or fire!

In addition, pay attention to high humidity when using electrical appliances to avoid exposure to power sources and short circuits.

The first burning Zhengqi can set up a windproof barrier to the north in the field to block the cold wind and avoid the harm of low temperature and frost.

Second, the application of manure leather, compost and plant ash in the crop field can not only increase the soil temperature, but also increase the soil aggregate structure and improve the soil fertility.

Crops should be provided with a warm environment, protect crops, crops can also be placed in greenhouses, pure limbs can also often do crops such as sun, hunger should also be watered frequently, and water and fertilizer management should also be done. Care should also be taken to avoid root rot.

You can choose to plant these crops in the greenhouse, or you can choose to wrap these crops in a layer of clothing, which will play a protective role in Yunzhichun, and it will also have a good effect.

To plant the crops in the greenhouse, it is necessary to choose the right planting time, to lay the mulch, to replenish water resources and nutrients in time, and to ensure the ventilation and light and heat time of the file. Imitation.

What is the inverted spring cold and what are the effects on the crops planted?

Spring is the transition season from winter to summer, cyclone activity is frequent, the weather is changeable, the temperature rises faster in early spring, and the temperature often plummets below 10 in the late spring, and even rain and snow weather, which is often called the inverted spring cold. The inverted spring cold will hit the early flowering apricots, apples, pears, plums, cherries and other fruit trees, especially in low-lying orchards, every year.

The cold spring in March and April had a greater impact.

a. It is easy to freeze buds and frozen flowers, which directly affects the flowering, pollination and fruit setting of fruit trees, and causes great damage to fruit trees. At present, while doing a good job in epidemic prevention and control, it is also necessary to do a good job in orchard management, timely carry out preparations for the prevention and control of spring cold, prevent problems before they occur, and ensure that this year's apple harvest is high quality.

"Falling spring cold" is harmful to all fruit trees, especially those that bloom early. to teach you how to prevent it.

The following prevention and control measures should be taken on the basis of reasonable fertilization, irrigation and branch pruning, and overwintering management:

b1.Watering. For orchards that are prone to spring cold, if there are irrigation conditions, water 1 or 2 times before and after germination to reduce ground temperature, delay budding, and avoid spring cold; Spray with salt water.

2.Pay attention to the weather forecast and spray the tree with 10% 15% salt water before the onset of low temperature frost damage. In doing so, frost resistance can be achieved by increasing the concentration of the somatic cell sap of the tree; Through water vapor condensation and heat release, the freezing damage of the tree can be reduced.

3.Smoking. When a cold snap arrives, smoke in the orchard as soon as possible: preferably at night when the temperature drops to 0. 6 7 dry branches and weeds are stacked per mu, and the soil is pressed after burning to improve the smoke effect;

4.Spray fertilizer. Before the onset of frost damage, spraying potassium dihydrogen phosphate aqueous solution on fruit trees at the budding stage can increase the cold resistance of the trees and reduce the frost damage.

The terrible thing about the cold is that it is warm first and then cold, the warm weather makes the fruit trees wake up, sprout and flower, and at this time, the frost resistance is extremely weak, and the frost damage may cause all the hard work to be in vain.

In the event of a disaster during the flowering period, the flower buds will fall off, the yield of the apple tree will be reduced or extinct, and the shoots, leaves, and stems will be frozen and damaged, and even the tree will die. In the young fruit stage, the frost will cause the fruit to be deformed, slow to develop, and even if it can mature, the skin will be wrinkled and difficult to survive, and the tree will lose its economic value, and the tree body will be damaged.