In winter, fruit trees enter dormancy, and various pests also enter the overwintering stage. The wintering dormant pests are characterized by a limited number of inactive and overwintering sites. Therefore, winter is a favorable opportunity to prevent and control diseases and insect pests. It can be combined with cultivation management, fruit tree pruning integrated prevention and control measures, labor, medicine, technology is simple. It is of great significance to reduce the base number of overwintering of pests and diseases, reduce the pressure for prevention and control of leap year, and ensure fruit production and quality. I. Turning the park to use the natural conditions of low temperatures and droughts in winter, through turning over the garden, turn overwintered pests in the soil (such as peach borer, red spider, etc.) to the surface of the soil and freeze to death or be eaten by beneficial animals; , Can also be ground dead branches, fallen leaves, fruit and other bacteria into the ground to eliminate. The closer the garden time is, the better the soil freezing effect is. If the garden is turned over in early spring, it is necessary to spread the insecticide powder on the surface of the soil to improve the control effect. The depth of the garden should be 20-30 cm. 2. Some pathogens and insect pests in clear garden fruit trees, such as pear scab, apple early defoliation, and other diseases and pests, are overwintering in fallen leaves, weeds, sick fruits, and dead branches. In the winter, these debris can be cleaned up and combined to burn or bury them in order to eliminate hidden pests. Third, cut pests and branches combined with winter pruning, the diseased branches of fruit trees, worm branches, dry branches cut off, and then focus on burning, can eliminate the winter on the branches of pathogens and pests, such as apple rot bacteria, round Sphaerotheca fuliginea, big leafhopper, tip leaf roller moth and so on. Fourth, scraping bark in the rough cracks in fruit trees there are many pathogens and pests overwintering, such as pear pests, apple pests and other pests and ringworm disease, dry rot and other bacteria. After scraping the bark, it is collected and burned or buried deeply to destroy germs or pests. Scrape bark can be carried out throughout the dormant season, but from the perspective of protecting natural enemies, it is advisable to use the pests in early spring when they have been larvae and the pests have not yet been active. In high-cold areas, it is better to shave the skin in late spring. The site of scraping the bark includes rough skins on the main stem and main branch, mainly on the main branch. The degree of scraping skin should grasp the principle that small trees and weak trees should be light, big trees, and busy trees should be heavy. Lighter people should scrape dead rough skin, and those who are severe should scrape yellow and green skins. 5. The white and white coating of trunks can reduce sun burning and freezing injury, delay the sprouting and blooming of fruit trees, protect the fruit trees from the harm of spring frost, treat both trunk diseases and pests, and kill the overwintering eggs hidden in tree gaps. It is advisable to apply the whitening twice, the first time after defoliation, before the soil is frozen, and the second time in the early spring. The white part of the painting is mainly trunk, the south of the trunk and the trunk of the tree are sunny, and the base of the main branch can also be painted white. However, do not spray it completely to avoid burning. Six, chemical control Some germs and pests except for the winter in dead branches, leaves and weeds, but also in other parts of the tree overwintering, such as round marks, disease buds, etc., so before the fruit trees are commonly sprayed once germinated 3 The lime-sulfur mixture of ~5 Baume Degrees has a significant effect in preventing overwintering pathogens and eggs on trees. For stem pests and other days of cattle, etc., can be used to dilute the effective concentration of contact pesticide to the fistula hole infusion. Foot Spa Machine,Foot Tub Spa Pedicure,Foot Bath Massager,Bubble Foot Spa Huaian Mimir Electric Appliance Co., LTD , https://www.footspamachine.com
Fruit tree dormancy prevention and pest control
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