1. The use width of sunshade net can be cut and spliced at will. The method of cutting is to cut it with high-heat electric heating wire, because the sunshade net can be fused into a road after high-heat cutting and will not come loose. The splicing method is to sew nylon thread by sewing machine or hand, and it is forbidden to bind or knot it with iron wire or aluminum wire, so as to avoid mechanical fracture and affect the service life of the sunshade net.
2. Floating surface coverage. Cover the sunshade net directly on the ground or plants, usually during sowing and after planting.
3. Cover with a small arch shed. Covering the arch frame of the small film arch shed with a sunshade net is suitable for shading in summer and autumn, cooling and ventilation or frost prevention at night in early spring, and can also be used for rain protection in rainy season or heat preservation at night in winter and spring.
4. Flat shed coverage. Build a 0.5 ~ 1.8-meter-high plane or inclined bracket on the prepared shed surface, and cover the bracket with a sunshade net for shading and rain protection.
5. Greenhouse coverage. Greenhouse coverage can be divided into single net coverage, net-film combined coverage, outside greenhouse coverage and inside greenhouse coverage. When single net and net film are combined to cover, both sides of the greenhouse are about 1 m from the ground, and are generally not covered. Covered around the shed, it is mostly used for heat preservation at night in early spring. Covered in a greenhouse, it is generally 1 ~ 1.5 meters away from the ground.
Extended data
For leafy vegetables planted in winter and spring, directly cover the surface (floating surface) with sunshade net to prevent low temperature injury. Because of its light weight, only about 45 grams per square meter, it will not crush, bend or reduce the commercialization of the planted high-leaf vegetables. Because of its certain air permeability, the surface of the leaves is still dry after covering, which reduces the occurrence of diseases. It also has a certain light transmittance and will not be "yellow and rotten" after covering.
During the period of 1997, Henan Agricultural University covered celery in the winter greenhouse of Longtang vegetable garden in Linying County to prevent cold. The results showed that under the condition of -6℃, when covered with sunshade net, celery leaves did not find a lot of ice. However, the temperature of the single-layer shed control group, especially the upper and middle leaves, has been frozen hard, and the temperature of the covering group is 65438 0.5℃ higher than that of the control group.