Plowing
Soil ploughing can turn over pests and pathogens such as peach borer winter worms and pear larvae overwhelming to the surface and be frozen, dried or fed by natural enemies, so that the insects that are turned to deep layers cannot be eclosed and suffocated. , It can also improve the soil, enhance permeability, increase the temperature of the ground, and facilitate the growth of the root system.
Tie grass, scrape bark, white
1. Using the selective insects of peach borer, leaf miner, and leaf roller moth for wintering sites, the grass is hauled on the trunk and branches of peach trees before wintering to trap the mature larvae and overwinter, and then they are collectively exterminated.
2. Insect pests and pathogens such as peach borers, pears, star caterpillars, and larvae are latently overwintering in rough skins, cracks, and cracks in fruit trees, and bark and then burned in winter, which have good control effects on various diseases and insect pests. Be careful not to injure the phloem while shaving. Artificially remove the pests on the stems and make them uniform.
3. Brush the whitening agent on the trunk to effectively prevent freezing damage and kill the pests that overwinter on the trunk. The trunk was painted white twice, the first time after the fruit trees were defoliated and before the soil was frozen, the second was in early spring. For large trees with cracked skin and large skin, scrape old skin and skin before whitening and then apply white. Whitening agent formulation: 10 parts of quicklime, 1 part of sulfur powder, 0.5 parts of salt and 40 parts of water.
Winter shears
Pruning in the early winter, adjust the structure of the crown, remove dry and dead branches, disease and insect branches, control leggy branches and development branches, and improve the ventilation and light transmission conditions of the trees. If the fruit tree has been sealed, you can use the "open skylight" approach. Pruning standards are based on maintaining good ventilation and light transmission. The cuts should be smooth and a protective agent (limestone, lime residue, salt, water ratio 5:0.5:0.2:20) should be applied immediately to wounds with a diameter of more than 1 cm. At the same time, the branches that have been cut off should be cleared out of the park in time and burned together.
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