According to the weather forecast and the news released by netizens, from 20:00 on October 9 to 10:00 on October 10, most of Gansu Province experienced snowfall and cooling weather processes. Tianshui, Pingliang, Qingyang, Linxia, Gannan, Dingxi and other prefectures and cities have snowfall or sleet weather, of which Tianshui, Pingliang, Dingxi places appear snow, snow depth of 5-20cm.
One of the most impressive images is that there are many apples on the local apple trees, and against the background of heavy snow, the trees are full of red lanterns, which are jokingly called "apple snow" by netizens. We know that late-ripening apples are harvested every day from October to November, especially the apples picked after frost, after the baptism of frost, it is called a crisp and sweet, and the quality taste is better. However, this year's climate is a bit unusual, with significantly more rainfall in the north than usual in autumn, and snowfall seems to come earlier than in previous years, such as snowflakes in northern Hebei and parts of Beijing a few days ago.
And on October 10th, Gansu, Shanxi and other underground heavy snow, the emergence of cold tide weather, then, this is said by the local fruit farmers to be 30 years of rare apple snow, fruit farmers are not psychologically prepared, overnight into winter, to the fruit farmers to bring what kind of trouble? What will be the impact on local apples?
1. Affect the timely picking of apples. At present, it is the picking and shipment period of flower cow apples in Gansu Tianshui and other places, and there is heavy snow precipitation, so the apple orchards and roads up the mountain are relatively muddy and slippery, which will definitely affect the timely harvesting of local apples.
2, affect the color of apples. At this time, it is the coloring period of late-ripening Fuji apples, snowfall and low temperature weather, solar radiation heat energy weakens, and the accumulated temperature is insufficient, which is not conducive to the coloring and ripening of apples.
3, snow is easy to crush apple branches. Snowfall adds weight to apple branches, which can easily lead to excessive load of apple branches and cause breakage, resulting in reduced apple production.
Although these problems will cause some trouble to local fruit growers, they are not the most worrying problems for fruit growers. The biggest concern for fruit growers is that the snow cools down, which will cause frostbite to the apples, and the problem is serious.
Because apples will freeze at about minus 2 ° C on the tree. If after the local snowfall, there is a continuous cooling weather, such as wind cooling, too low temperature will definitely freeze the apples on the trees, especially after the rain and snow, there is snow water on the apples, which is more likely to occur at low temperature frost damage. For example, last year, the apples of some fruit farmers in the Aksu region of Xinjiang, due to insufficient manpower, the high-quality apples of the trees were not harvested in time when the cold came, and they were directly frozen on the trees.
This is the snowfall before the apple has even fallen, which worries the grower the most. However, this time Gansu and other places fell "apple snow", although it is a rare early snow in 30 years, but this is only a short period of cold wave caused by a climatic phenomenon, in the winter time snow, the temperature warmed up very fast. For example, after the snowfall in northern Hebei and parts of Beijing a few days ago, the minimum temperature was around the freezing point, and the temperature rose the next day, which basically caused low temperature frost damage to the late ripening apples on local trees.
Therefore, although there is snowfall in Gansu, Shanxi and other places this time, there is "apple snow", for late-ripening apples that are more resistant to low temperature and frost, as long as it is not a continuous cold wave, it is basically not a fundamental harm to the apples on the trees. However, fruit growers should be vigilant, after all, this year's world climate change is a bit unusual, after the snow melts, we must pick apples in time to prevent this winter's cold wave from coming early, and the grains will be returned to the warehouse.
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