Big cherries are fruit trees that are not too cold tolerant, and are suitable for cultivation in areas with annual average temperatures of 10 to 12 degrees Celsius. Abnormal temperature refers to high temperature and low temperature that exceed the temperature range of large cherry. Under normal circumstances, high temperatures have a lesser degree of harm to large cherries, and low temperatures have a greater degree of damage to cherries.
According to the time and performance of cold hazards, it can be divided into two kinds of winter frost damage and flower frost.
1, winter frost damage due to different levels. Those with light freezing injury, flower buds with frostbite, and freezing death; those with severe freezing injury, with upper branches and upper branches of tree crowns having frostbite and freezing to death; those with severe freezing injury, major branches and main trunks being frozen, and the entire plant dying. The critical temperature for freezing injury in winter is generally lower than the low temperature of 20 degrees Celsius. Sometimes at 18 degrees Celsius, severe damage has occurred in large branches. Temperatures dropped to minus 25.2 degrees Celsius, causing massive dead trees. Under the same low-temperature conditions, the freezing injury with a rapid temperature drop is heavy, and the cold injury with a slow fall is light.
Between the different species, the cold hardiness of the sour cherries is stronger, and the freezing injury is lighter under the same low temperature conditions. Sweet cherry has poor cold tolerance and severe cold injury. Between different plants, strong trees and trees stored more nutrients, the degree of cold damage is lighter; weak trees, tree stores less nutrients, the degree of frost damage is heavier.
2, flowering frost is the most important low-temperature damage cherry. The critical temperature of frost during flowering varies with flowering phenology. In general, as the phenological period progresses, the ability to withstand low temperatures decreases. The flower bud coloring period encounters low temperatures of minus 5.5 degrees Celsius to minus 1.7 degrees Celsius, and flowering and young fruit encounter freezing temperatures of minus 2.8 degrees Celsius to minus 1.1 degrees Celsius. Those who lightly injure the flowers and young fruit, and those who are heavy suffer from the loss of production. Xue Yong Cherry is a fruit tree that is not too cold tolerant but is suitable for cultivation in areas with annual average temperatures of 10 to 12 degrees Celsius. Abnormal temperature refers to high temperature and low temperature that exceed the temperature range of large cherry. Under normal circumstances, high temperatures have a lesser degree of harm to large cherries, and low temperatures have a greater degree of damage to cherries.
According to the time and performance of cold hazards, it can be divided into two kinds of winter frost damage and flower frost.
1, winter frost damage due to different levels. Those with light freezing injury, flower buds with frostbite, and freezing death; those with severe freezing injury, with upper branches and upper branches of tree crowns having frostbite and freezing to death; those with severe freezing injury, major branches and main trunks being frozen, and the entire plant dying. The critical temperature for freezing injury in winter is generally lower than the low temperature of 20 degrees Celsius. Sometimes at 18 degrees Celsius, severe damage has occurred in large branches. Temperatures dropped to minus 25.2 degrees Celsius, causing massive dead trees. Under the same low-temperature conditions, the freezing injury with a rapid temperature drop is heavy, and the cold injury with a slow fall is light.
Between the different species, the cold hardiness of the sour cherries is stronger, and the freezing injury is lighter under the same low temperature conditions. Sweet cherry has poor cold tolerance and severe cold injury. Between different plants, strong trees and trees stored more nutrients, the degree of cold damage is lighter; weak trees, tree stores less nutrients, the degree of frost damage is heavier.
2, flowering frost is the most important low-temperature damage cherry. The critical temperature of frost during flowering varies with flowering phenology. In general, as the phenological period progresses, the ability to withstand low temperatures decreases. The flower bud coloring period encounters low temperatures of minus 5.5 degrees Celsius to minus 1.7 degrees Celsius, and flowering and young fruit encounter freezing temperatures of minus 2.8 degrees Celsius to minus 1.1 degrees Celsius. Those who lightly injure the flowers and young fruit, and those who are heavy suffer from the loss of production.
According to the time and performance of cold hazards, it can be divided into two kinds of winter frost damage and flower frost.
1, winter frost damage due to different levels. Those with light freezing injury, flower buds with frostbite, and freezing death; those with severe freezing injury, with upper branches and upper branches of tree crowns having frostbite and freezing to death; those with severe freezing injury, major branches and main trunks being frozen, and the entire plant dying. The critical temperature for freezing injury in winter is generally lower than the low temperature of 20 degrees Celsius. Sometimes at 18 degrees Celsius, severe damage has occurred in large branches. Temperatures dropped to minus 25.2 degrees Celsius, causing massive dead trees. Under the same low-temperature conditions, the freezing injury with a rapid temperature drop is heavy, and the cold injury with a slow fall is light.
Between the different species, the cold hardiness of the sour cherries is stronger, and the freezing injury is lighter under the same low temperature conditions. Sweet cherry has poor cold tolerance and severe cold injury. Between different plants, strong trees and trees stored more nutrients, the degree of cold damage is lighter; weak trees, tree stores less nutrients, the degree of frost damage is heavier.
2, flowering frost is the most important low-temperature damage cherry. The critical temperature of frost during flowering varies with flowering phenology. In general, as the phenological period progresses, the ability to withstand low temperatures decreases. The flower bud coloring period encounters low temperatures of minus 5.5 degrees Celsius to minus 1.7 degrees Celsius, and flowering and young fruit encounter freezing temperatures of minus 2.8 degrees Celsius to minus 1.1 degrees Celsius. Those who lightly injure the flowers and young fruit, and those who are heavy suffer from the loss of production. Xue Yong Cherry is a fruit tree that is not too cold tolerant but is suitable for cultivation in areas with annual average temperatures of 10 to 12 degrees Celsius. Abnormal temperature refers to high temperature and low temperature that exceed the temperature range of large cherry. Under normal circumstances, high temperatures have a lesser degree of harm to large cherries, and low temperatures have a greater degree of damage to cherries.
According to the time and performance of cold hazards, it can be divided into two kinds of winter frost damage and flower frost.
1, winter frost damage due to different levels. Those with light freezing injury, flower buds with frostbite, and freezing death; those with severe freezing injury, with upper branches and upper branches of tree crowns having frostbite and freezing to death; those with severe freezing injury, major branches and main trunks being frozen, and the entire plant dying. The critical temperature for freezing injury in winter is generally lower than the low temperature of 20 degrees Celsius. Sometimes at 18 degrees Celsius, severe damage has occurred in large branches. Temperatures dropped to minus 25.2 degrees Celsius, causing massive dead trees. Under the same low-temperature conditions, the freezing injury with a rapid temperature drop is heavy, and the cold injury with a slow fall is light.
Between the different species, the cold hardiness of the sour cherries is stronger, and the freezing injury is lighter under the same low temperature conditions. Sweet cherry has poor cold tolerance and severe cold injury. Between different plants, strong trees and trees stored more nutrients, the degree of cold damage is lighter; weak trees, tree stores less nutrients, the degree of frost damage is heavier.
2, flowering frost is the most important low-temperature damage cherry. The critical temperature of frost during flowering varies with flowering phenology. In general, as the phenological period progresses, the ability to withstand low temperatures decreases. The flower bud coloring period encounters low temperatures of minus 5.5 degrees Celsius to minus 1.7 degrees Celsius, and flowering and young fruit encounter freezing temperatures of minus 2.8 degrees Celsius to minus 1.1 degrees Celsius. Those who lightly injure the flowers and young fruit, and those who are heavy suffer from the loss of production.
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