First, pick the leaves. About 1 week before bag removal, the leaves in the range of 5-10 cm near the fruit platform were removed first. After 10 days, the upright and dense branches in the crown were cut off, and the excessive dense shoots on the periphery were removed (competitive and strong shoots). ) Improving the lighting conditions in the various parts of the canopy to increase the degree of fruit surface coloration. The leaves were left to retain the petiole, multiple lower senescent leaves were removed from the shoots, and less functional leaves were removed from the shoots.
Second, transfer fruit. 5-6 days after bag removal, gently hold the fruit by hand, gently transfer the fruit, and turn the negative side to the positive side. Such as uneven coloring, 5-6 days, then slightly turn its direction, to make it full and uniform coloring (note that the fruit should be turned in the same direction, prevent fruit stems off), if not turning, should be transformed with a transparent tape Fixed, removed when picking. The best time to transfer fruit is from 2-3 pm on sunny days, and cloudy days.
Third, the tree under the reflective film. Before the fruit is colored until it is harvested, a reflective film is placed on the inside and outside of the tree tray. The surface of the membrane is fixed with stones, ropes, or nails. Do not press soil. Use 300-500 square meters per mu. Do not over-tighten when laying the film. After laying the film, always clean the leaves and dust on the film surface. Before laying the film, it is best to make the tree plate into a convex surface with a high center and a low outer surface, eliminate the branches, weeds, and stones in the tree plate, break up the clods, and lay the film after the leveling. Such as picking leaves, turning fruit and other properly managed, the whole red fruit rate of up to 85%.
Fourth, spray increase red liquid. 40 days before and 20 days before harvest, apple redner No. 1 1500-2000 times liquid can promote coloring.
Fifth, regulate moisture. Pay attention to drainage before fruit ripening, but if it is severely drought within 1 month before harvest, it will hinder fruit coloring, and even the colored fruit will fade. Therefore, it is necessary to spray water several times during severe drought to increase air humidity and promote fruit coloring.
In addition, long-branch red Fuji apples to be colored well, to start early, apply more farm fertilizer throughout the year, increase phosphorus and potassium fertilizers, adequate load, protect the leaves, to take comprehensive measures in order to achieve better results.
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