First, manual control 1. Remove weeds and fallen leaves in or around the orchard, and deep-buried or incinerated. 2. From early March to the end of March, scrape apple, pear rot, and dry rot. Apply cibiqing or copper humate to prevent apple, pear rot, and dry rot. 3. From late March to early April, scrape bark of mature apple and pear, remove branches and rings, and winterize spider mites, aphids, and leaf roller moths in the cracks in the bark. Remove the insects on branches of peach, plum, apricot, etc. Second, chemical prevention 1. Spray 5 Baume degrees lime sulfur agent before germination to control the pathogens of spider mites, two-spotted spider mites and residual stems. In the orchard, which was seriously harmed by the leaves of the last year, the tree should be sprayed once with 2.5% Uranus EC 2000 times or with 3 Baume degrees lime sulfur, which should also be protected against insects. 2. When germination is approaching, use 50% dichlorvos 200 times to smear the branches and other parts to kill the leaf roller moth. After budding and flowering, the bud can be sprayed with 2.5% Uranus EC 2000 times to control leafhoppers, leaf roller insects, pear caterpillars and gold-grained moths. 3. If there are a large number of beetles infestation, sprinkle 4.5% of Aldehyde powder or 3% phoxim granules 2~2.5 kg/mu under the trees before flowering, and then dig into the soil after spreading. Before flowering, the locusts seriously inflicted 2000-4000 times of the annual winter oil, and the effect was good. 4. For root rot plants, when the upper part of the local area shows signs of symptoms, the radial sulcus is excavated immediately and the medicine is applied. Can be used 10% double effect Ling 200 times or 500 times liquid bacteria poisoning, adult trees per plant irrigation 50 ~ 75 grams, tree small reduction.
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4. Remove the residual leaves from the top leaves of apple and various fruit branches, and bury them deeply or incinerate them to eliminate overwintering insects such as leaf roller and red spider.
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Spring fruit tree pest control points