网址：www.bswy1688.com 2024-01-09 作者：admin 阅读：
When covering the shading net, the management of the shading net should be strengthened according to weather changes and different stages of celery growth. Before celery sprouts, it should be covered with a net all day. After sprouting, the net should be lifted at both ends in the morning and evening to see light, and covered when the sunlight is strong at noon. It can be left uncovered all day in cloudy days, but the net must be covered in time before rainstorm.
2、 The width of the shading net can be cut and spliced arbitrarily. The cutting method is to use electric heating wire for high heat cutting, as the sunshade net can melt and form a path after high heat cutting, which will not loosen. The method of splicing is to use nylon thread on the sewing machine or sew by hand. It is important to avoid tying with iron or aluminum wire to avoid mechanical breakage and affecting the service life of the sunshade net.
3、 Floating surface covering directly covers the shading net on the ground or plants, usually during sowing and after planting.
4、 The small arched shed covers the shading net on the arched support of the thin film small arched shed, which is suitable for shading, cooling, breathability in summer and autumn, or frost prevention in early spring and night. It can also be used for rain prevention in the rainy season or insulation in winter and spring at night.
5、 The flat shed is covered with a 0.5 to 1.8 meter high flat or inclined support on the prepared shed surface, and the shading net is covered on the support for shading and rain prevention.
6、 Greenhouse coverage can be divided into single net coverage, net film combined coverage, outer and outer perimeter coverage, and inner greenhouse coverage. When a single net and a mesh are combined for coverage, the two sides of the greenhouse are generally suspended about 1 meter above the ground and not covered. Covering around the outside of the shed, it is often used for insulation in early spring and at night. Covering inside the greenhouse, usually 1-1.5 meters above the ground without covering.