The latest measures for overwintering cold prevention of apple trees

Apple is a fruit we are all familiar with, and China is the largest producer of apples in the world. With the coming of winter, the temperature continues to drop, and low temperature has a great impact on apple trees, which is easy to cause freezing damage and cause huge economic losses. Therefore, we should pay attention to cold prevention measures during production. Let's take a look at the cold prevention measures of apple overwintering with the editor below.

1. Irrigate frozen water

Watering once before freezing in winter can not only make the soil reserve sufficient water, increase the soil temperature, but also meet the transpiration of fruit trees, prevent freeze and drought, and help blossom and bear fruit in a year, which can be said to kill three birds with one stone. However, it should be noted that the irrigation time is too early, the temperature is high, and the evaporation of fruit trees is large, which is not conducive to water storage, which will reduce the cold resistance of fruit trees; too late, the soil has been frozen, water is difficult to seep, and the roots of fruit trees are vulnerable to freezing damage. The appropriate irrigation time is in the middle of November, when the night temperature is lower than 0 degrees and the soil is frozen, while the daytime temperature is higher and can be thawed, which is the best irrigation time.

2. Apply overwintering fertilizer

Fertilizer in the process of decomposition, can release a lot of heat, can raise the low temperature, can make the fruit roots safe to winter, and fertilizer can also provide nutrients to the fruit and increase cold resistance, so it is necessary to apply overwintering fertilizer before overwintering. Generally speaking, the application amount of overwintering fertilizer is determined according to the growth status of each plant, and fertilization is generally combined with ploughing, which can not only ensure that fertility is fully absorbed by the soil, but also increase soil permeability and make it survive the winter smoothly.

3. Timely harvest

In order to increase the freshness of the fruit, some fruit growers will not harvest immediately after the fruit is ripe, but will hang the fruit on the tree for a period of time, so as to improve the quality of the fruit. However, if the late harvest is disadvantageous to the growth of the plant, especially the late-maturing varieties, the tree does not recover completely after the harvest party, the leaf nutrition can not return, the nutrient accumulation is less, and the cold resistance is weak, which affects the ability of overwintering.

4. The trunk is painted white or bound.

After the fallen leaves of the fruit trees are dormant, the parts below 1.5 meters of the trunk are painted white with paint or lime solution to reduce the temperature difference on the surface of the branches and reduce sunburn. In addition, the cold resistance of young trees is poor, simple white coating can not make it safe to survive the winter, need to be bound with straw or wrapped with white plastic film. To avoid the cold.

The above is the introduction of apple trees overwintering cold prevention measures, hope to help you, want to know more related knowledge, please follow us.