Spring fruit tree pest control points

First, manual control

(1) Remove weeds and fallen leaves in or around the orchard, and deep-buried or incinerated. (2) Scrape apples, pear rot, and dry rot before sprouting, and apply chlorhexidine or copper humate to prevent apple, pear rot, and dry rot. (3) In early April, scraped bark was applied to adult apple and pear to remove branches and rings, and winter spider mites, aphids, leaf roller moths, etc. in the cracks in the bark. Clear peach, plum, apricot and other branches on the stem. (4) Exfoliate dead leaves from apple stubble leaves and various fruit branches, and deep-buried or incinerated to eliminate overwintering tip leaf roller moths and red spiders.

Second, chemical prevention

(1) Spraying 5 Baume degrees of lime sulfur before germination to control the pathogens of spider mites, two-spotted spider mites and residual stems. In the orchard, which was seriously damaged by leafhoppers in the previous year, a 2.5% Uranus EC should be sprayed once a day or 3 Baume degrees lime sulfur should be sprayed. (2) Near the time of germination, use 50% dichlorvos 200 times liquid to smear the cut mouth, branches and other parts and kill the leaf roller moth. After budding and flowering or flowering, 2.5% Uranus EC can be sprayed and used to control leafhoppers, leaf curlers, pear caterpillars and gold-grained moths. (3) If there are a large number of beetles infestation, apply 4.5% of Aldehyde powder or 3% of phoxim granules 2-2.5 kg/mu under the trees before flowering, and pour into the soil after spreading. Before the flowering locusts are seriously harmed, spraying 2000-4000 times of the annual winter cream is good. (4) Early May in order to prevent and treat early defoliation, anthrax, ring rot disease, leafhoppers, and leaf roller moths, spray 70% thiophanate-methyl 800-1000 times, and add 2.5% Uranus EC for 2000 times. (5) 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 poured. 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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