I. Clear Garden
Combined with winter pruning, saw out the dead branches of rot, cut off tumour shoots, and completely clean the orchard, clean up the fallen leaves, fallen fruits, broken branches, and rotten skins, dig and bury or burn, and reduce the number of pests and worms. In the late March, when the buds are green and the clear garden is sprayed, the preferred agent is Baume 5 degree lime sulfur, followed by 45% Schnering 200-300 times solution or other medicaments.
Second, the main pest control
1. Rot disease
Scraping recurrences and newly occurring diseases, the diseased tissues should be scraped clean thoroughly during the curettage process. The edges of the lesions should be smooth and leave no frizzy hair. The depth should be as deep as possible, reach the xylem, and apply drugs after shaving. Spots are applied once every 7 to 10 days, then coated with 1 to 2 cm thick mud and wrapped with plastic cloth. The commonly used agents include methylthionaphthalene acetate healing agent, 843 healing agent, and Corbicillin.
2. Hawthorn red spider
The first is the Qingyuan Garden. In the late March, when the buds were green and sprayed with clear gardens, the preferred agent was Bomer 5 degree lime sulfur. The second is before flowering (inflorescence separation period, early April) spray etoxapol + avermectin + chlorpyrifos + silicone (both powdery mildew, scale insects and other pests). The third is 10 days after flowering, sneezing and dying net + cyanocyanine + imidacloprid + new spirit (both aphids, leaf roller moth, early defoliation and other pests). The fourth is to spray avermectin + Bingsendol + imidacloprid + calcium sugar alcohol (in the early stages of defoliation, aphids and other pests and diseases) in the middle and late May.
Third, flower and fruit management
1, thinning and fruit thinning
Sparse fruiting and fruiting should be started sooner rather than later. The methods of spacing and ordering are used. Each inflorescence is left every 20cm. The sparse flowers start from the inflorescence and begin to grow. The fruit thinning starts from two weeks after flowering, and each fruiting table stays. One fruit.
2, flower spray fertilizer
Flowering trees spray 0.3?0.5% borax +1% sugar +0.3?0.5% urea to increase fruit setting rate.
Fourth, top-dressing watering
During the fruit period, apple orchards applied 8-15 kg of pure nitrogen per acre in the middle of March, P2O5-5 kg, and k208-15 kg, and they were watered immediately after fertilization.
V. New Orchard
Plant trees in newly-built orchards to select three-year-old dwarfing interstock large seedlings with a plant spacing of 1.5 to 2 meters and a row spacing of 4 meters. Variety can choose cool incense, Golden Century, Huayu, Asus, Acer and other Fuji Fujia Fujia excellent series.
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