In winter, when fruit trees enter dormancy, growth stops or activities are weak. The main points of winter management are to do the following four tasks: 1, Qingyuan (1) Combine pruning to remove litter, pests and diseases, and burn them together. (2) Till the soil. Plowing the orchard will not only help improve the physical and chemical properties of the soil, but also help kill pests and diseases that overwinter in the soil. (3) Peeling and scraping of fruit trees, such as grapes and pears, which are older in age and have more cracks in the skin. (4) Evergreen fruit trees use 1 Baume degree lime sulfur or 45% crystal rock mixture in winter 100 times, peach, pear, grape, plum and other deciduous fruit trees with 3 to 5 Baume degree lime sulfur or 45% crystal stone Sulfur mixture 30 to 50 times the whole garden spray, can greatly reduce the number of winter diseases and pests. 2, pruning After one year of growth, fruit trees are prone to tree disorder. To form a good crown structure, extend economic life, and achieve high quality and stable yield, deciduous fruit trees are best pruned in the winter from late December to next January. In general, young trees and tree branches are prone to light shearing; aging trees and weak tree shears; and pruning of trees with fruitful peaks and moderate tree vigor, and the adjustment of growth and results in the following year. 3, antifreeze (1) Main trunk Sokcho. (2) The trunk is painted white. With 1 part quicklime, 6 ~ 8 parts of water, add a small amount of salt dubbed whitening agent, the main white coating, adding a small amount of white agent sulfur is better. (3) Tree disk soil. The trunk of the fruit tree is centered on the main trunk, and the tree disk is 10-20 cm long. However, after the temperature rises in the spring, the soil is opened and the neck is exposed. (4) Evergreen fruit trees can use 0.5% urea solution or 0.3% to 0.5% potassium dihydrogen phosphate for extra-root fertilizer at noon on sunny days in winter to increase the humidity of orchards and increase the anti-freezing ability. (5) Conditional orchards can be irrigated from mid-December to January of the following year in case of winter drought. 4, spray sterilization The proportion of sprayed medicine was ferrous sulfate: quicklime: water = 3:3:100. Spray fine spray, spray uniform, with the distribution with the spray. It should be noted that rain can't be sprayed on the rainy day and can't be sprayed on the windy day. When there is dew in the morning and in the evening, it can't be sprayed, and high temperature weather can't be sprayed. Otherwise, it is easy to produce phytotoxicity or reduce the efficacy of fruit trees. It is best to spray at 8-10 AM and after 3 PM. Guangzhou Zhongzhinan Supply Chain Co.,Ltd. , https://www.gzzhongzhinan.com
Winter management of fruit trees is to pay attention to four points