What is the function of laying reflective film in orchard? What material is the reflective film made of?

Promote fruit coloring: make the top and shady side of drooping fruit receive light, impr

What is the function of laying reflective film in orchard? What material is the reflective film made of?

Promote fruit coloring: make the top and shady side of drooping fruit receive light, improve the light intensity in the middle, lower and inner rooms of the crown, promote the overall coloring of fruit and improve the appearance quality of fruit. Increase the sugar content and weight of the fruit: the soluble matter of the fruit of the film-covered tree is about 13%, and the weight of the single fruit is increased by 5.7-6.7 grams. Promote flower bud differentiation: leaves become thicker and greener, and flower buds become fuller. Higher output benefit: higher quality and stronger market competitiveness.

First, the role of laying reflective film in orchard

1, promoting fruit coloring

(1) After the reflective film is laid, it will reflect the light upward from the ground, so that the top and shady side of drooping fruit will receive the light, which will improve the light intensity in the middle, lower and inner rooms of the crown, make the fruits in these parts, especially the parts that are not easy to be colored (such as calyx depression and stem depression) fully colored, and increase the number of all-red fruits, thus achieving the purpose of improving the appearance quality of fruits.

(2) According to the observation, the average coloring index of the whole plant of the film-covered tree is about 50%-70%, while that of the uncovered tree is only 26%-40%, and the average coloring index is increased by 25%-30%. The coloring index of fruit in inner cavity and lower canopy increased to 43.8%-54.3%, and all red fruits and fruits with coloring area over 3/4 accounted for 35%-69% of the whole fruit.

2. Increase the sugar content of fruit.

According to the determination of hand-held sugar content meter, the soluble matter in the fruit of film-covered trees is about 13%, which is higher than that of the control trees 1%-3%. The weight of single fruit increased by 5.7-6.7 grams.

3. Promote flower bud differentiation

The leaves of the film-covered trees will be thicker, the green will be deeper and the buds will be fuller, which will lay a good foundation for increasing production in the coming year.

4, improve the output efficiency

If the orchard is covered with reflective film, the fruit will be more evenly colored and have higher quality, which can greatly improve the market competitiveness of the fruit and obtain higher output benefits.

Second, what is the material of the reflective film?

1. Reflective film is a new type of reflective material, which is composed of a reflective layer formed by glass beads and polymer materials such as PVC and PU through a special process. It is a safety protection product.

2. Under the irradiation of a certain light source, the reflective film can produce a strong reflection effect, providing effective and reliable safety guarantee for pedestrians or night workers in the dark.

3. Reflective film is a kind of PVC film with special structure, which mainly uses optical principle to reflect light back to the light source. Generally, it consists of a film layer with good weather resistance, a tiny glass bead layer, a focusing layer, a reflecting layer, an adhesive layer and a peeling layer.

4. The quality appraisal of reflective film mainly depends on the characteristics of film material, reflective coefficient of glass beads, bead distribution rate, dead bead rate, color uniformity, weather resistance and adhesive layer viscosity.

5. The grades of reflective film can be divided into diamond grade, high strength grade, engineering grade and economic grade.

6. Reflective films are generally mainly used for road and railway signs, guide card, mine and airport safety signs, stage scenery, trademarks, famous brands and license plates.