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How to use greenhouse shading cover cloth
Best way to cover
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 net should be covered all day before the celery emerges. After the emergence, the net should be opened at both ends in the morning and evening to see the light, and it should be covered at noon when the sun is strong. In cloudy days, you can leave it open all day, but you must cover the net in time before the rainstorm.
2. The width of the sunshade net can be cut and spliced arbitrarily. The method of cutting is to use the electric heating wire to cut off with high heat, because the sunshade net can be fused into a road after being cut off by high heat, and will not be loose. The method of splicing is to use nylon thread to sew on the sewing machine or by hand. Do not use iron wire or aluminum wire to bind and ligate, so as to avoid mechanical breakage and affect the service life of the sunshade net.
3. Covering the floating surface: Cover the sunshade net directly on the ground or on the plant, usually at the time of sowing and after planting.
4. Covering the small arch shed: Cover the shading net on the arched bracket of the film small arch shed, which is suitable for shading, cooling, ventilation in summer and autumn, or frost protection 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.
5. Flat Shed Covering: Build a 0.5-1.8-meter-high plane or inclined bracket on the finished shed surface, and cover the shading net on the bracket for shading and rain protection.
6. Greenhouse coverage: Greenhouse coverage is divided into single-net coverage, mesh-membrane combined coverage, surrounding coverage outside the greenhouse, and coverage inside the greenhouse. When the single net and the omentum are combined to cover, the two sides of the greenhouse are generally suspended about 1 meter above the ground and not covered. The shed is covered all around, and is mostly used for heat preservation at night in early spring. Cover in the greenhouse, generally 1 to 1.5 meters above the ground.
7. Covering at each growth stage: 1)The main purpose of covering after sowing is to maintain soil moisture and prevent soil compaction after heavy rain. Prevent pests and birds from harming. The method is generally to cover directly on the ground, but the net should be opened in time after emergence, so as not to hinder the growth of seedlings. 2) Short-term coverage after planting, one is to cover the cabbage, cauliflower, Chinese cabbage, celery, lettuce, etc. after planting in summer and autumn, and cover it until it survives. Solanaceous fruits, melons and beans planted in early spring are covered at night to prevent frost.
