After autumn, the basal fertiliser was fully wetted with rain and topdressed with basal fertilizer. A parallel ditch was established on both sides of the tree at the dripping line, and 3-5 kg ​​of organic fertilizer or biological organic fertilizer was applied to the plant.
After pruning in the winter, the tree pruning should adopt natural evacuation and layered trees. The principle of pruning should be the same as that of pruning. It requires large branches and thin leaves to remain, no twigs remain, no overlapping, staggered, and three-dimensional results. For overlapping, parallel, cross, and competition branches, choose the poor ones to be sparse, and cut the branches and branches of the pests, dead branches, and the weak and weak branches. Immediately after pruning, callus anti-corrosion film should be used to protect the wound healing tissue, prevent infection with rot fungus, prevent soil and rain pollution, prevent freezing, prevent chapped wounds, reduce nutrient consumption, and improve flower quality and fruit setting rate.
Pest control Hawthorn fruit trees are susceptible to powdery mildew, aphids, ball scale insects, and lepidopteran larvae in the fall and early winter. To this end, spray insecticide treatment in the fall, combined with foliar fertilizer, promote flowers and so on. The deciduous dormant period thoroughly sprays the tree maintenance general to completely eliminate the source of overwintering diseases and insects.
To prevent premature defoliation while preventing and controlling pests and diseases, the drought must be properly watered and sprayed with new high-fat membrane to prevent virus infection of leaves. The green and lush foliage, photosynthetic product accumulation, and directional transport ability are enhanced, and the leaves are prevented. Premature shedding affects normal fruiting and quality improvement in the next year.
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