How to improve the finish of apple fruit surface

1. Fruit bagging. Fruit bagging is one of the best and most effective technical measures to improve the surface finish of apple fruit. Fruit bagging can make the pericarp smooth, delicate, bright color, less rust spots, and small and few fruit spots, so as to improve the appearance quality of the fruit.

2. Control the amount and proportion of nitrogen fertilizer. If the amount of nitrogen fertilizer is too much, the bagged fruit has poor chlorosis, the fruit surface is dull and dirty, and the red variety coloring is slow and light; on the contrary, if the nitrogen fertilizer is moderate, the peel background color is light, the color is bright, the red variety is more bright, and the fruit rust becomes lighter.

3. The fruit hangs freely. Fruit is a single fruit free drooping growth, not close to branches, stems, leaves, fruit, can effectively avoid branch grinding, leaf grinding, water rust, cracks and the breeding of diseases and insect pests.

4. rational use of pesticides and foliar fertilizer. If the pesticide and foliar fertilizer are used in improper period or concentration, it will often stimulate the fruit surface and make the fruit surface rough, and even cause drug damage, affecting the smoothness and fruit properties of the fruit surface. One month before harvest, the orchard should stop spraying Bordeaux liquid or concentrated lime emulsion and use fungicides with no residue and no residue, such as Dasheng Mmur45, Nongkang 120, polyantimycin and so on. The apple was sprayed with 800 times Meiguoling solution at flowering stage, 500ml 600 times solution at bud stage, young fruit stage, fruit expansion stage and before harvest, and 400 times amino acid compound fertilizer from young fruit to pre-harvest stage. These micro-fertilizers are sprayed 5 times a year to thicken the waxy layer on the fruit surface.

5. Spray fruit surface protectant. Spraying 500Mel 800-fold high-fat film or 200-fold paraffin emulsion could reduce the rust spot on the fruit surface or microcrack of the pericarp, and played an obvious role in improving the appearance quality of apple fruit.

6. Light picking, light handling and light transportation to prevent mechanical damage of fruit noodles.

7. Wash the fruit. After the fruit is harvested, wash the fruit before grading packaging, which can wash away the water rust, drug spots and other pollutants attached to the fruit surface, and keep the fruit surface clean and bright.