Technical measures for autumn and winter management of hawthorn

1. Apply basal fertilizer in autumn. After the soil is fully moistened after rain, apply basal fertilizer. Open parallel trenches at the drip lines on both sides of the tree. Apply 1.5 to 2.5 kg of organic fertilizer or bio-organic fertilizer, and cover the surface of the ditch with 5 to 10 cm of soil. .

2. Plastic pruning should adopt the natural evacuation layered tree type, and the pruning principle is to pay equal attention to the pruning. For overlapping, juxtaposed, crossed, and competing branches, choose the poorer ones to remove them, and cut off diseased and pest branches, dead branches, and weak fruiting branches. After pruning, use the callus antiseptic film to protect the growth of wound healing tissue, prevent soil and rain pollution, antifreeze, and prevent dryness of wounds, so as to reduce nutrient consumption and improve flower quality and fruit setting rate.

3. Pest control: Spray a pest control and disease control agent in autumn, combined with foliar fertilizer and flower-promoting hormone. During the dormant period of deciduous leaves, spray the tree guard to thoroughly remove the source of overwintering pests.

4. Prevent premature leaf fall. While doing a good job in pest control, proper irrigation should be done during drought, and the leaves should be sprayed with a new high-fat film to prevent leaf virus infection, leading to premature leaf shedding.

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