The shading rate of six needles is about 80%.
The shading rate of three needles is about 60%;
2. Rain-proof effect:
The quality of the three needles is poor, and it is easy to be exposed to rain and sun. The waterproof effect of three needles is poor, and rainwater is easy to penetrate;
Six needles have good rain-proof effect and can effectively resist rain erosion; Six stitches have strong sun resistance, good texture and long time;
3. The sunshade net is made of polyethylene (HDPE), high-density polyethylene, PE, PB, PVC, recycled materials, brand-new materials and polyethylene glycol. After ultraviolet stabilizer and oxidation resistance treatment, it has the characteristics of strong tensile strength, aging resistance, corrosion resistance, radiation resistance and portability.
4. Mainly used for protective cultivation of vegetables, osmanthus, flowers, edible fungi, seedlings, medicinal materials, ginseng, ganoderma lucidum and other crops, as well as aquaculture. It has obvious yield-increasing effect.
Extended data:
When covering the sunshade net, we should strengthen the management of the sunshade net according to the weather change and the different growth periods of celery. Celery should be covered with nets all day before emergence. After emergence, the two ends of the net should be uncovered sooner or later to see the light, and then covered at noon when the sun is strong. You can leave it uncovered all day on cloudy days, but you must cover the net in time before the rainstorm comes.
The use width of the 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.
Floating surface mulch covers the sunshade net directly on the ground or plants, usually during sowing and after planting.
Covering a small arch shed with a sunshade net on the arch frame of a small film arch shed is suitable for shading in summer and autumn, cooling, 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.
Cover the flat shed on the prepared shed surface to form a flat shed or inclined shed bracket with a height of 0.5 ~ 1.8 m, and the bracket is covered with a sunshade net for sun protection and rain protection.
References:
Baidu encyclopedia-sunshade net
References:
Baidu encyclopedia-transmittance