Balanced fertilization First, the combination of pest control spraying functional liquid fertilizer, strong tree vigor, improve the resistance of the tree; Second, before the apple tree, combined with watering topdressing organic nitrogen fertilizer 0.5 to 1 kg, no longer the next year Topdressing nitrogen fertilizer; Third, the autumn basal fertilizer should be as early as possible, if the conditions permit, fruit with fruit dressing in front of the tree, at least should be topdressing with leaves, fertilizer to bio-organic fertilizer, with inorganic fertilizer and trace element fertilizer, The amount used is 70% to 80% of the annual fertilization amount to promote tree nutrient storage and increase tree vigor.
Scientifically pruning orchards with high humidity and canopy closure are conducive to spore production and spore dissemination. In the growing season, it is necessary to cut away the buds, dense branches and squid branches at the cut slash, so as to make the orchard airy and clear and prevent the orchard from closing.
Orchard grass growing through the orchard can reduce soil erosion, preserve water and fertilizer, increase soil organic matter, and create a favorable environment for microbial growth; it can improve the orchard's environmental microclimate, and regulate the surface soil water, fertilizer, gas, heat, and biomass fertility factors in the orchard; Improve soil granule structure, promote root growth and development; reduce agricultural environmental pollution, slow down and repair acidified soil, promote root development and tree robustness.
Drainage flood control to dig ditches, so that after the rain can quickly reduce the humidity of the orchard, creating an environment that is not conducive to the breeding and infestation of pathogens.
According to the weather forecast, during the rainy season in July and August, according to the weather forecast, if continuous spraying of Bordeaux for 20 days and organic pesticides occur in 7 days of continuous rainy weather, it is necessary to spray protective bactericidal agents that can withstand more than 72 hours of rain before spraying. Protection, if there is no timely spraying before the rain, to be sprayed in the continuous rainy season interval mancozeb mixed with Mn-Mn, in 10 days after the Bordeaux spray or spray Bordeaux mixed solution directly to the enemy. When using the drug, the quality of the drugs used by the regular enterprises must be selected and sold. The spray must be meticulous and considerate. One should not leak, especially spraying the internal branches of the crown, and ensure that the front, back, and fruit of the leaves are uniformly drugged. At the same time, the medical device must adjust the pressure, and the higher the degree of liquid atomization, the better the control effect.
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