Folks have a proverb called "Winter Scratching and Pears." In fact, it is not only a pear tree but also a variety of fruit trees such as apple, jujube, persimmon, etc. In the winter and spring seasons, the rough skin is scraped off, and good results can be obtained for the growth of fruit trees in the coming year.
As the tree ages, the outer bark becomes rough due to aging, loses its elasticity and extensibility, and cannot adapt to the needs of tree trunk growth. It inhibits the growth of fruit trees; and in winter, many pests that harm fruit trees ( Eggs, larvae, larvae and other insects) and pathogenic bacteria reside in the cracks in the rough skin of the fruit tree and hibernate in winter. Therefore, the rough skin will be scraped off in winter to increase the tree vigor and prevent premature aging of the tree. It will also eliminate pathogens and pests that overwinter in the cracks in the bark, reduce the number of overwintering bases, and control or reduce the occurrence of pests and diseases.
First, scraping skin objects: pears, peaches, plums, grapes, dates, apples and other fruit trees that are prone to produce rough skin, are necessary to scrape skin. However, juvenile fruit trees are not suitable for skin-skinning. In general, pears are more than 10 years old, and peaches, persimmons, plums, dates, and apricots are more than 8 years old. Grapes over 5 years old can be shaved. If they do not reach the above age, they must not be shaved. Otherwise it will affect the normal growth of fruit trees.
Second, scraping skin parts: from the top of the three main branches of fruit trees scraped from the top down, especially the old skin at the delivery point to be carefully scraped clean, branches do not leak, strains scraped. For rot and rosy ring disease and other lesions regardless of size, to be completely scraped. Especially on the main trunk of 40 cm above the ground, the density of overwintering pests is the greatest and it should be scraped off.
Third, scraping time: during the dormancy period of fruit trees in winter, from December to February of the following year for the best scraping time. Do not scrape the skin prematurely, otherwise the tree nutrients will be lost and the fruit trees will be safely overwintered. The skin is shaved once every 2-3 years.
Fourth, scraping depth: pear, jujube bark thick, deep cracks, can be scraped to the degree when the red; apple tree skin is thin, should be light scraping, shallow scraping; peach, apricot, plum, persimmon, etc. Glue-free fruit trees should not be deeply scratched; For any kind of tree, it cannot be scratched to expose white endothelium.
5. After scraping, apply white: After scraping the skin, apply a whitening agent to brush it again to kill pests and germs, and reduce the occurrence of sunburn. The formulation of the whitening agent is water: quicklime: lime sulfur stock solution: salt: fat is 40:10:2:2:0.3. First open the lime, pour the oil, add water into the lime milk, then add the lime sulfur and salt.
Sixth, matters needing attention:
1. Plastic film should be placed under the canopy when scraping the skin so that scraped dandruff and insects can be collected, burned or buried deeply.
2. For scraping, fruit cutting, sawing and other scraping tools, be clean, not rot and stainless. After each scraped bark with lesions, it must be promptly disinfected with alcohol or a 50-fold bacterial liquid. Sterilization prevents bacteria from infecting fruit trees again, causing unnecessary losses. To remove the wounds from the diseased part and scratch the bark, apply Bordeaux mixture and other liquids in time to prevent the spread of germs.
3. The whitening agent should be filled with non-metallic containers and should not be filled with metal containers to avoid chemical reactions. Whitening agent should be used with the distribution, not long-term existence.
Safety Box,Home Safe,Large Safe Box,Exclusive Safes
Hebei Yingbo Safe Boxes Co.,Ltd , https://www.ybsafebox.com