Reflective film can be applied along the rows of apple trees during the late ripening period, which can obviously improve the color of the fruit in the inner chamber, making it brighter and more red fruits. For orchards with good varieties, combining reflective film technology with orchard management techniques such as thinning flowers, thinning fruits, bagging, leaf picking, and fruit transfer can produce a large, all-red, pollution-free, high-quality export standard. Fruits, the benefits are significantly improved. The apple orchard's reflective film technology is introduced as follows:
There are many reflective film manufacturers on the market, and the product quality varies. Generally, the better quality is the pure double-sided composite film of polypropylene, polyester aluminum foil, and polyethylene. It has good flexibility and high reflectance. Strong anti-oxidation ability, can be used for more than 5 years.
The orchard for film selection must be well ventilated and transparent, the orchard is not obscured, and there is less handover between rows. For orchards with poor ventilation and light transmission conditions, shady orchards, and severe inter-row handovers, the effect of laying reflective films is poor, so this technology should not be used.
Film laying is first of all a strict film laying standard: when the reflective film is laid, it must be high inside and low outside. This allows rainwater to flow between the rows to prevent water on the membrane area from affecting the reflective effect. The film should not be soil, and the film surface should not be pulled too tightly to prevent the cold shrinkage of the reflective film when the temperature decreases. Secondly, the film should be laid strictly. The fruit should be colored and harvested after picking the bag.
Supporting technology In order to increase the total red fruit rate, the reflective film laying should be combined with other management techniques such as apple fruit bagging, leaf picking and turning, branching, and autumn pruning to increase the use of reflective film, thereby producing a better quality High-end boutique apples.
The amount of whole branches is suitable: especially the branches at the base of the crown should not be too dense, and maintain a distance of 30-50 cm from the ground. The number of branches per mu is stable at 60,000 to 80,000, and there is 1/3 of the shadow area under the canopy.
Defoliation: Defoliate within 1 month before picking (after picking the bag). The total amount of defoliation should not exceed 30% -50% of the total leaf volume of the whole tree. This has no adverse effects on tree vigor and yield in the following year. influences.
Turn the fruit and turn the fruit: In order to make the fruit fully colored, turn the brightly colored positive side of the fruit to the negative side, and the badly colored negative side to the positive side. In addition, the fruit branches and fruits in other directions must be turned down and down, so that the depressions face down. Ragged end coloring.
Precautions Regulate the amount of branches in dense plantations: In orchards with dense canopies and poor light transmission, and dense plantations where the whole garden has a serious transfer, the effect of adding reflective films is very poor, so this type of garden should adjust the amount of branches through thinning. Also pay attention to the choice of terrain and direction. The reflective effect of the film is better on sloping land than on flat land, and north-south direction is better than east-west direction.
Regularly level and clean the reflective film: When it is windy or rainy, re-level the film blown by the wind in time, and clean the dirt and fallen leaves on the film in time to ensure the reflective effect of the film.
Finally, before picking, clean the leaves and soil blocks on the reflective film, remove the solids, carefully lift the film and roll it up, then wash it with water, dry it, and store it in a non-corrosive environment indoors for the coming year. Reuse, the stored reflective film can be used for 3-4 years.
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