With the increase of age, the fruit trees are rough, cracks increase, and become sites for overwintering pests and diseases. In production, scraping rough skin is an effective measure to reduce the wintering base number of orchard pests.
1, scraping skin objects. Apples, pears, grapes, and other fruit trees are prone to produce rough skin. Adult trees older than 10 years old must be scraped. Scrape the rough bark and cracks on the stems and stems; scrape off the rot and ring disease.
2, scraping time. Scrape should be carried out in the early spring, that is, temperatures begin to rise and pests and germs have not yet started. It should not be too early, otherwise it will affect the safe wintering of fruit trees.
3, scraping skin depth. Scrape can only scrape off the main skin and main branches completely corked rough skin, split skin and the residual skin at the cut and branch fork, depth is not white to be appropriate, to avoid damage to the endothelial layer. The thick skin of the pear tree can be properly shaved, and fruit trees such as peaches and apricots must be lightly shaved. For those with stronger tree vigor, you can scratch more, and those with weaker vigor should shave more.
4. Note: When scraping the skin, a plastic film should be laid under the canopy to collect the scraped dandruff and insects, and burn them centrally or deeply.
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