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Choose shade net shade must first consider the rate of
 Hits :        Date : 11-08-23

Currently on the market shade nets are mainly two: one is sold by weight, one is sold by area. Shade net sold by weight are generally recycled materials network, is a low-quality network, using the period of 2 months to 1 year, this network is characterized by coarse silk, net hard, rough, dense mesh, heavy shade generally high rate of generally above 70%. Shade net selling area by the general network for the new material, the use of a period of 3 to 5 years, this network is characterized by light weight, flexible medium, flat surface, shiny, black-rate adjustment range, 30% to 95% can be achieved.
Farmers in the purchase of shade nets, first needs to be clear how much of their own vegetables, shading rate. In direct sunlight in summer, the light intensity is generally 60,000 to 100,000 lux, and for vegetables, the majority of the light saturation point vegetables 30,000 ~ 60,000 lux, light saturation point, such as pepper 30,000 lux, eggplant is 40,000 lux, 55,000 lux for the cucumber. Too strong light will have a significant impact on photosynthesis of vegetables, leading to delay absorption of carbon dioxide, respiration rate is too large, etc., occur in photosynthesis under natural conditions, "lunch" phenomenon is produced. Therefore, the use of appropriate sun shading rate of network coverage, not only can reduce the greenhouse temperature around noon, but also improve the efficiency of photosynthesis of vegetables, serve two purposes.
Taking into account the different lighting needs and vegetables Pengwen control needs, farmers must choose the right shade net shade rate, must not freeloaders, chosen at random. Peppers and other low light saturation point can choose the shade net shade higher, such as shading rate of 50% to 70% of the shade network to ensure that shed light intensity of about 30,000 lux; for cucumber and other high light saturation point vegetables, you should choose a relatively low rate of sun shading network, such as shading rate of 35% to 50% of the shade network to ensure that shed light intensity of about 50,000 lux.


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