Detailed Explanation of Postharvest Commercial Handling Technology for Navel Orange Fruit
I. Growth and Development Indicators for High-Yield Navel Orange 1. Tree shape, plant height and canopy spread. For 4-5 year old trees, cultivate a natural round-headed shape; for mature trees, control the trunk height at 40 cm and tree height at about 2.5 m; the high-yield canopy spread should be maintained at about 2.80 m x 2.60 m. 2. Diameter and grading. The branch trunk diameter of Newhall should be...
After commercial handling of navel oranges, the fruit is fresh, brightly colored, clean and glossy on the surface, with a regular and neat shape, uniform size and good appearance, achieving standardization and commercialization.After commercial handling, the profit from fresh sales of navel orange fruit, sales after 60 days of storage and sales after 90 days of storage was 2.0, 2.0 and 1.5 times that of the control, respectively, with remarkable benefits. The larger the handling volume, the lower the cost and the more obvious the benefits, but storage time should preferably not exceed 90 days.
(1) Fruit harvesting and postharvest commercial handling process: timely harvest without damage -> pre-storage for 3 days -> fruit selection -> fruit washing -> chemical treatment -> waxing -> grading -> wrapping fruit in plastic film bags -> loading into turnover boxes for storage in the warehouse -> packing for sale.
(2) Commercial handling technology: at the eight-tenths ripe stage, harvest carefully in strict accordance with the harvesting operation regulations; during fruit selection, remove diseased and insect-damaged fruit, damaged fruit and deformed fruit. For chemical treatment, wash the fruit with 200Xl0?6 thiabendazole and place it in a ventilated place for pre-storage for 3 days. Waxing uses fully automatic operation. During grading, the fruit is sorted into 6 grades according to fruit diameter: above 85 mm, 80-85 mm, 75-80 mm, 70-75 mm, below 70 mm, and substandard fruit. Then wrap each fruit individually in polyethylene film bags, place them in turnover boxes and store them in a ventilated storage warehouse. For sale, they are packed in small cardboard boxes and marketed.