Five elements of management after apple picking
First, the purpose of autumn cropping shears is to increase light, improve the light transmittance of the crown, and promote fruit coloring, mainly to remove stub branches, competing branches, upright branches, so that the leaves of each branch are uniformly light, ensure the fruit coloring .
Second, picking leaves to remove the fruit base leaves mainly can also be appropriate removal of fruit near the base of the new shoots to the middle of the leaf, in order to increase the degree of direct fruit light bath, effectively enhance coloring, while preventing the leaf surface close to the fruit surface, the fruit Formed flower spots. The leaves are generally divided into two stages. The first time the combined removal of the inner bag is carried out to remove the lobule around the fruit. The second picking is performed one week after the first picking, and the fruit can be completely removed. Shade of leaves. The test results showed that with the increase of the amount of leaf removal, the proportion of whole red fruits also increased. However, the more the number of picked leaves is, the better. With the increase of the amount of leaf removal, the phenomenon of burning on the daytime becomes more and more serious. The amount should be 15% to 20% of the whole tree.
Thirdly, the fruit coloring index increased by an average of about 20% when the fruit was transferred and the fruits and fruits of the mat were transformed. During the fruit-transmission period, about 15 days after bag removal (ie, after the color on the Yang surface), change the position of the shoot and the direction of the fruit, and turn the fruit's dark side to the positive side (to prevent the fruit from turning back to the original position, use a transparent white tape. Fix it so that it is fully exposed to light. Turn the fruit handle gently to avoid spraining the fruit and leaving the layer, resulting in fruit drop. The transfer time is controlled before 10 o'clock in the morning and after 4 o'clock in the afternoon to prevent sunburn. The main purpose of the padding is to prevent the scraping of the branches and leaves after bagging on the fruit surface. Using the removed paper bag, the padding of the fruit surface close to the branches can be prevented. This can prevent the abrasion of the fruit surface caused by the wind and affect the appearance quality of the fruit.
Fourth, the silver reflective film in the fruit coloring period (Red Fuji apples in early September), tree tray silver reflective film can improve the canopy and the lower part of the light state, so that the crown of the fruit, especially the fruit and the Ministry can be around Full coloring, truly full red fruit, while increasing fruit sugar content. The reflective film is laid under the canopy of the trees, and the work lanes are left between the rows. The edges are fixed and 400 to 500 square meters of film are used per mu of orchard. The reflective film shall be put away 1 to 2 days before the fruit is harvested, washed, dried, and used continuously for the second year. The extent of the paving is limited to the vertical projection of the crown.
V. Pest control After picking the bag, in order to prevent the ring rotten fruit disease caused by the latent pathogen in the fruit, it is necessary to spray a fungicide inside.
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