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According to Hainan Daily client丨 reporter Qiu Jianghua

Affected by the cold air, Hainan has been cloudy since December, and there has been rain in some areas, and the cold air has hit people. According to the news released by the Hainan Provincial Meteorological Department, on the 19th ~ 20th of last week, Hainan was affected by the cold air supplement, the minimum temperature was 10~12C in the central, northern inland and western inland areas, and as low as 7~10C in individual towns and villages in the central region.

How cold is it this winter? A reporter from Hainan Daily learned from the Hainan Provincial Meteorological Department that the temperature in our province has fluctuated greatly since December this year, mainly low in the first half of the year, obviously high in the early part of the middle and low in the later period. Compared with previous years, except for the central Wuzhishan and Baoting slightly higher, the rest of the places are low. According to the statistics of the Hainan Provincial Climate Center, the average temperature in Hainan Province from December 1 to 20 was 19.5C, 0.6C lower than that of the same period in normal years.

"It is relatively likely that the temperature in our province will be generally low this winter." Wu Shengan, chief forecaster of the Hainan Provincial Climate Center, told reporters that "La Niña" is the main reason for the low temperature in our province since December. Under the influence of "La Niña", a cyclonic upward anomalous circulation occurred in the South China Sea and Northwest Pacific, which led to a strong winter monsoon and active cold air from the south, which eventually led to a low temperature in our province.

"However, some time ago, there was a rumor on the Internet that 'La Niña will cause the coldest winter in Hainan', and now there is still no scientific basis." Wu Shengan said that because of the effects of global warming, "La Niña" is almost impossible to cause a cold winter of the same intensity as before the 1980s. Since the 50s of the 20th century, there have been more than a dozen La Niña events, "although most of the years when La Niña occurs in Hainan have low winter temperatures, it is not a 100% inevitable event." ”

The continuous cloudy and cold winds disturbed the good interest of many citizens and tourists to go out. But the good news is that at noon on the 21st, the sunshine in Haikou has returned. On the 22nd~27th, the cold air weakened, and the whole island was dominated by cloudy weather, and the temperature slowly rose. Among them, on the 22nd ~ 24th, the whole island was mainly cloudy, with scattered light rain in the east and central areas, and the temperature rose slowly; On the 25th~27th, under the influence of the easterly airflow, the whole island was mainly cloudy, with scattered light rain or fog in the northern, eastern and central regions, and the temperature continued to rise, with a maximum temperature of 30C.

The Hainan Provincial Meteorological Department issued a reminder of this week's agricultural affairs, the temperature is low at the beginning of this week, and melons, vegetables and fruit trees need to continue to do a good job of cold protection and warmth in winter to prevent flowers and fruits from falling. In the middle and late stages, the temperature will rise slowly, and crops need to strengthen pest control.

In addition, meteorological experts reminded that even if the temperature starts to rise slowly this week, the weather will still be chilly in the morning and evening, and the public is advised to adjust their clothing reasonably according to the temperature change to beware of colds. When the weather is dry, drink plenty of water and eat some moisturizing foods.

This winter because of the "La Niña phenomenon", will be a particularly cold winter in the past 60 years, the cold winter will not only make people feel very uncomfortable, but also for farmers, it will have a great threat to crops, many crops are difficult to resist the cold winter, low temperature weather will bring great harm to crops, so in the face of 60 years of extremely cold this winter, farmers should do what to prepare for the cold winter?

I believe that many people are deeply impressed by the ice and snow weather in 2008, because of the impact of low temperature, the southern region in 2008 suffered a snow disaster, the snow disaster that year, not only made many people trapped on the way home, and for agricultural workers, this snow disaster made a lot of crops frostbitten, resulting in property damage.

Especially for the vegetable farmers who plant greenhouse vegetables, it is necessary to do a good job of prevention to fight against the advent of winter, greenhouse vegetables want to grow well, it is necessary to have a more comfortable temperature, the sudden cold will reduce the temperature, if you do not do a good job of prevention, then the vegetables planted in the greenhouse are likely to grow poorly, or even be frozen to death.

Farmers and growers must prevent the arrival of every cold wave

Therefore, according to the current weather forecast of various countries, this winter is likely to usher in a cold wave, and it is necessary to take corresponding precautions to protect your crops before that.

Therefore, before the cold wave comes, in addition to doing a good job of cold protection and warmth for yourself and your family, you should also pay attention to the cold protection of crops.

Some people may not think much of La Niña, but as it stands, it has snowed in many areas before it really enters winter, and such early snow is rare, which also means that this winter is likely to be the coldest winter in 60 years, as predicted on the Internet.

A climate that is too cold is not a good thing for human health, but also for many other aspects, especially for farmers who grow crops, so it is not possible to be careless about cold protection.

Harvest in time to avoid losses due to freezing disasters

If you want to prevent damage to your crops in the cold winter, in addition to doing a good job of cold protection and heat preservation, you can also pick vegetables and fruits in time before the harvest.

Like many fruits, the ripening period is in the autumn, therefore, before the winter comes, the fruit picking work should be completed, in addition to fruits and vegetables, there is another kind of self-produced life more common food, sweet potatoes also need to be collected and stored in time.

Sweet potatoes are more afraid of cold and frost crops, therefore, before the cold winter comes, it is necessary to do a good job of harvesting sweet potatoes, if sweet potatoes are damaged by the cold winter, it is easy to be frostbitten, resulting in poor taste and appearance, so that it is difficult to sell, will cause property losses to growers.

However, there are also some different varieties of sweet potatoes that are more frost-tolerant, such as hemp sweet potatoes are planted in deep soil, and they are not afraid of cold winters. In addition, most vegetables are afraid of the cold winter, and once the cold winter comes, many vegetables will be frostbitten and unable to survive. However, there are exceptions, such as cabbage and green onions, which are relatively hardy vegetables, and these vegetables do not need to be harvested in a hurry before the cold winter comes, and can wait until the temperature is around 0 degrees Celsius before picking.

Autumn and winter fruits such as apples and pears should be picked and sold in time after they are ripe.

Of course, compared with the northern region, for the southern region, even in the face of such a 60-year coldest winter, the drop in temperature will not be particularly severe, plus many greenhouse planting technologies are now relatively mature, so in the face of the cold winter, as long as the relevant cold insulation work is done, it is generally possible to let crops survive the winter.

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