In winter, fruit trees must be cleared away. Why?

What is the role of apple tree clearing in winter? In fact, fruit farmers all know that this is a relatively mature technology. It is to use the winter leisure time of winter solstice and spring to carry out a centralized pest control in apple orchards. Rot mainly occurs on tree trunks or branches. The base of the trunk often shows that bark rot leads to the death of trees. In winter, the diseased tissue should be scraped off, and the affected area should be smeared with 70% nail holder and vegetable oil mixture to prevent the scar from recurring.

The sundries in the orchard should be thoroughly removed. Deciduous leaves, weeds, dead branches and dead fruits are one of the main wintering places for pests and diseases. When clearing the garden, these sundries must be cleared out of the orchard and buried deep, or burned and fertilized. After clearing the garden, dilute and dissolve the compound fertilizer for one week, find out the inferior filler, improve the utilization rate and concentration, combine and mix the poultry hair that has been fermented and decomposed into mud four months in advance, and then sprinkle with appropriate amount of water.

Eliminate hidden pests and diseases in fruit trees. In winter, the weather is cold, many pests hide in the leathery cork of fruit trees to lay eggs for the winter, and many pathogen spores fall into the bark for the winter. Extract lime. Soil is a good place for bacteria to overwinter, so the whole garden should be disinfected and sterilized by spraying lime, stone sulfur mixture or bactericide to reduce overwintering diseases. Straw ropes are tied to the trunk, which will be removed in the spring of next year and taken out of the orchard for burning. Because there may be overwintering eggs in this straw rope, burning in time can effectively prevent the occurrence of pests and diseases.

The cleaning work of fruit trees mainly includes sterilization, insect prevention, tree raising and protection of fruit trees from overwintering, which will play a great positive role in the prevention and control of orchard diseases in the coming year. Orchard cleaning period should be carried out in the dormant period of pests and diseases. The incubation period of fruit tree diseases and insect pests is the most vulnerable period in their lives, that is, in winter, the dead branches and rotten leaves in the orchard are cleaned up and burned centrally. Eliminate the germs and eggs lurking in the fallen leaves of fruit trees.