There is a proverb in the folk called "winter peeling, more pears." In fact, not only pear trees, but also a variety of fruit trees such as apples, jujubes, persimmons, etc. In the winter and spring seasons, the rough skin is scraped, and the fruit trees can grow well in the coming year.
With the growth of fruit trees, the outer bark will become rough due to aging, lose its elasticity and stretchability, and cannot meet the needs of thickened trunk growth, which inhibits the growth of fruit trees; and in winter, many pests that harm fruit trees ( Eggs, pupae, larvae, and other worms) and germs, residing in the rough cracks of fruit trees for wintering. Therefore, scraping the rough skin in winter can not only enhance the vigor of the tree, prevent premature aging, but also eliminate the overwintering bacteria and pests in the cracks of the bark, reduce the overwintering base, and control or reduce the occurrence of pests and diseases, killing two birds with one stone.
I. Peeling objects: pears, peaches, plums, grapes, dates, apples and other fruit trees that are prone to rough skin, all need to be scraped. However, young fruit trees should not be peeled.Generally, pear trees are more than 10 years old, peaches, persimmons, plums, jujubes and apricots are more than 8 years old, and grapes more than 5 years old can be peeled. Otherwise it will affect the normal growth of fruit trees.
Second, scraping parts: scrape from the top of the three main branches of the fruit tree from top to bottom, especially the old skin at the branches must be carefully and carefully cleaned, the branches are not leaking, and the plants are scraped. Regardless of the size of the branches, such as rot and rot disease, they must be thoroughly scraped. Especially on the trunk of 40 cm above the ground, the density of overwintering pests is the largest, and it should be scraped.
3. Peeling time: during the dormant period of winter fruit trees, the best peeling time is December to February of that year. Do not scrape the skin prematurely, otherwise the nutrient content of the tree will be lost, and the safety of the fruit tree will be affected. Usually scrape the skin once every 2-3 years.
Fourth, the depth of scraping: pear, jujube bark is thick, deep cracks, can be scraped to the degree of red; the apple tree is thin, you should scrape lightly, lightly; peach, apricot, plum, persimmon, etc. Spruce fruit trees should not be scraped deeply; grapes need only be scraped. For any kind of tree, the white endothelium cannot be scraped.
Fifth, apply white after scraping: After scraping, apply the whitening agent and brush it again to kill the pests and germs and reduce the incidence of sunburn. The formula of whitening agent is water: quicklime: stone sulfur mixture stock solution: table salt: oil and fat is 40: 10: 2: 2: 0.3. First lime, pour grease, add water to form lime milk, and then add stone sulfur mixture and salt.
Six, matters needing attention:
1. When scraping the skin, a plastic film should be laid under the canopy to collect the scraped dander and insects, burn them or bury them deeply.
2.For scraping tools such as scrapers, fruit shears, saws, etc., they should be clean, not rotten and rustless. After scraping the bark with diseased spots, they must be disinfected with alcohol or 50 times the sterilization solution in time. Sterilize to prevent germs from infecting the fruit tree again, causing unnecessary losses. For areas where the diseased part is cut off and the bark is scratched, a medicinal solution such as Bordeaux solution should be applied in time to prevent the spread of germs.
3, whitening agent should be used in non-metallic containers, avoid metal containers to avoid chemical reactions. The whitening agent should be used with the preparation, and should not be stored for a long time.
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