When is the best time to cover a sunshade net

1. When covering the sunshade net, the management of the sunshade net should be strengthened according to the weather changes and the different periods of celery growth. The celery should be covered with nets all day long before emergence, and the nets should be opened with light at both ends sooner or later after emergence, and covered at noon when the sun is strong. When it is cloudy, it can be left uncovered all day, but it is necessary to cover the net in time before the storm.

2. The shading net can be cut and spliced at any width. The cutting method is high-temperature cutting with electric heating wire, because the shading net can be fused to form a road after high-temperature cutting, so as not to loosen. The method of splicing is to use nylon thread on the sewing machine or to sew by hand. Don't use iron wire or aluminum wire to bind and ligate, so as not to cause mechanical break and affect the service life of the shade net.

3. Floating surface cover Cover the shading net directly on the ground or plants, usually during sowing and after planting.

4. Covering the small arch shed The sunshade net is covered on the arched support of the small film arch shed, which is suitable for shading, cooling, ventilating in the summer and autumn, or anti-frost in the early spring and night.

5. Flat Shed Cover A 0.5 to 1.8 meter high flat or inclined support is built on the finished shed surface, and the shading net is covered on the support for shading and rainproof.

6. Greenhouse Covering Greenhouse cover is divided into single net cover, net-membrane combination cover, outer cover cover and inner cover cover. When the single net and the omentum are combined and covered, the sides of the greenhouse are generally about 1 meter above the ground and are not covered. The perimeter of the shed is covered, and it is mostly used for insulation in early spring and night. Covered in the greenhouse, generally 1 to 1.5 meters above the ground.

7. Covering at various growth stages 1. The main purpose of covering after sowing is to maintain soil moisture and prevent soil consolidation after heavy rain. Prevent pests and birds. The method is generally to cover the ground directly, but the net should be removed in time after emergence, so as not to hinder the growth of seedlings. 2. Short-term coverage after planting. One is to cover cabbage, cauliflower, Chinese cabbage, celery, lettuce, etc., which have been planted in summer and autumn, until they are alive. They are covered day and night and can be directly covered on the crops. Seeds are planted in the evening to cover solanum and melon beans to prevent frost.