Why scrape the pear skin?

In the trunk and main branches of perennial pear trees, the epidermal cells are constantly aging and dying due to metabolism, and a thick skin is formed on the surface of the cortex. This layer of warped skin becomes a place for pests or germs to overwinter. Therefore, scraping the bark in winter can eliminate the eggs, pupae, larvae and germs hidden in the cortex of pear trees, which is of great significance to reducing the damage of pests and diseases in the coming year and improving the yield and quality of pear fruits. However, the following points should be grasped when scraping the skin: < P > First, pear trees cultivated for more than 1 years are generally selected, because there will be cracks in the main branch cortex to varying degrees, and larvae, eggs and germs are easily hidden in these cracks.

Second, special peeling tools should be used when peeling, and the peeling on the central trunk, main branch and side branches of pear trees should be carefully scraped off. Generally, young trees should be scraped lightly, while old trees have thick skins and many cracks, so the skin should be scraped deeply until the red endothelium appears, but the action should be light to prevent scratching the endothelium.

thirdly, after peeling pear trees, the diseased branches, insect branches, fallen leaves, fallen fruits and scraped debris should be removed outside the garden in combination with clearing the garden in winter, and centralized destruction should be carried out. Brush it on the scraping part with whitening agent.