Apple's sweetening can be loved by consumers. What are the methods to effectively sweeten the apples? The details are as follows: (1) Placing reflective film on the side of the tree in early August 1 meter covered with aluminum foil plastic on the side of the canopy The film can increase the reflected light and fully color the inside of the canopy and the lower part of the fruit. The total number of red and half red fruits in the trees treated with retroreflective film accounted for 71% of the total, while only 40% of the unpainted trees. (2) Apply bacterial agents. The appropriate amount of sweetened sweetener colorant can not only increase the fruit sugar content, make the fruit color evenly, but also maintain the fruit "green" quality. (3) Rational fertilization. Red Fuji apples are hi potassium varieties. Therefore, applying more potassium fertilizer after July will increase the fruit coloring index by 24.4% and the sugar content by 2.4% (absolute value). (4) Fruit bagging. After bagging, the fruit is not only colored but also fresh and bright. It is best to use a double-wood wax paper bag with good shading, good air permeability, and good hydrophobicity. Before the wheat is harvested, the bag is closed. Before the harvest, the bags are picked up twice in 15 to 20 days. , It is best to spray 1 or 2 times of water to promote coloring. (5) Picking leaves, twisting fruit, hanging sticks. When the fruit is sunny, the leaves that affect the shade of the fruit must be promptly removed. For the non-colored side of the fruit or the joint surface of two parallel fruit, it should be twisted to the sunny side at the right time. The pillars and hanging sticks should be erected in a timely manner in the later period of fruit growth to prevent coloration due to overlapping, squeezing and sagging of the result branches. (6) Shop reflective film. After picking the leaves and turning the fruit, the retroreflective film is immediately placed under the trees, which can significantly increase the color of the lower skirt and the pimple, and increase the total red fruit rate. Details can visit the website or consult.
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