It is late autumn, the temperature in Xi'an has recently risen, many friends in the circle of friends to dry apricot blossoms, there are Shaanxi Province Xi'an Botanical Garden, Lantian County, Lintong District, some people exclaimed "autumn to see the spring blossoms." On October 30, a reporter from Huashang Daily came to the Shaanxi Botanical Garden and saw the apricot blossoms and begonia flowers that were opening.
The apricot blossoms bloom in a few branches and some of the branches grow emerald green new leaves
In the Children's Park of Xi'an Botanical Garden, the reporter saw apricot blossoms, a row of seven or eight apricot trees, apricot blossoms are dotted with stars, some are pale pink, some are white. Some of the flowers are already in bloom, and some are flower bones with buds waiting to be released. Some of the branches also grew emerald green new leaves.
On the side of the peony garden, the reporter saw begonia flowers, which also opened sporadically on the begonia trees, white and pink, which were much more gorgeous than the plain and pure apricot blossoms. The trees also bear dense begonia fruit.
Plants mistakenly think that spring is coming, so they bloom twice
Why do small flowers that should bloom in spring bloom in autumn? Zhang Yujun, assistant researcher of Xi'an Botanical Garden in Shaanxi Province, said that when plants have a recognition difference in external information, in the autumn low temperature climate, the brief warming makes the plants mistakenly think that spring has arrived, and they will bloom twice. Since October 2021, the weather in Xi'an has been dominated by rainy weather, the temperature is low, and the temperature has warmed up in recent days, resulting in the secondary flowering of many fruit trees. Such a situation is known in the folk as "October Xiaoyang Spring".
Zhang Yujun introduced that the phenomenon of secondary flowering is more common in apricot trees, pear trees, peach trees, apple trees, magnolias, locusts, paulownia, etc., especially pear trees. The phenomenon of secondary flowering in the southern region of China is more common than in the north, and there are more plant species that occur in the secondary flowering phenomenon than in the north, and the degree of secondary flowering is also more serious than that in the north.
In the history books, there are also records of the phenomenon of secondary flowering of plants, such as the "Biography of the Ram": "In December of the thirty-third year of the Lu Dynasty (627 BC), the meteorite frost did not kill the grass, Li Meishi". The Two Han Dynasties are also recorded: "The second year of Emperor Hui of the Western Han Dynasty (193 BC), winter thunder, peach, plum flower"; "In the first year of the Eastern Han Dynasty (194 AD), the mulberry was revived in September, and the rafters were edible." Since then, the records of secondary flowering phenomena in the literature have often been found, and the secondary flowering phenomenon involves most of the country and involves 54 species of woody plants.
Secondary flowering will cause nutrient loss and affect normal flowering and fruit in the following year
Zhang Yujun introduced that the factors affecting the secondary flowering of plants are mainly the genetic characteristics of plant bodies, early leaf fall and warm autumn and warm winter abnormal climate, and the age of trees and the weakening of trees also have a certain impact. In fruit tree cultivation, early maturing varieties are generally more likely to have secondary flowering than late maturing varieties.
The secondary flowering of plants disrupts the normal phenological characteristics, which will cause a large amount of nutrient loss, weaken the tree potential, resulting in poor resistance to cold and overwintering of the tree, and the amount of flowers in the next year is sharply reduced, and the diseases and insect pests are aggravated, which seriously affects the normal flowering results of the next year or even the third year, resulting in reduced yield or even harvest.
Huashang Daily reporter Ren Ting/Wen Deng Xiaowei/Photo
Source: China Business Network - China Business Daily
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