When covering the shade net, according to the weather changes and the different periods of celery growth, the management of the shading net should be strengthened. The net should be covered all over the sky before the emergence of celery. It can not be covered all day on cloudy days, but the net must be covered in time before the rainstorm arrives.
The cutting method is to cut with a high heat with an electric heating wire, because the shading net can be fused into a road after being cut with high heat, and it will not be loose. The splicing method is to use nylon thread on the sewing machine or to sew 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.
Cover the sunshade net directly on the ground or on the plant, usually during sowing or after planting.
The sun shade net is covered on the arched support of the small film arch shed, which is suitable for shading, cooling, ventilation in summer and autumn, or anti-frost in early spring and night, and can also be used for rain prevention in rainy season or heat preservation at night in winter and spring.
Set up a 0.5-1.8 meter high flat or inclined bracket on the finished shed, and cover the bracket with a sunshade net for shading and rain protection.
Greenhouse coverage is divided into single-net coverage, mesh-membrane combined coverage, surrounding coverage outside the shed, and coverage inside the shed. When single net and omentum are combined to cover, the two sides of the greenhouse are generally suspended about 1 meter above the ground without covering. Cover around the outside of the shed, mostly used for heat preservation at night in early spring. Cover in the greenhouse, generally 1 to 1.5 meters above the ground without covering.