Features greenhouses: the regulation of air humidity. Air humidity regulation: the greenhouse air humidity is too large, not only directly affect the photosynthesis of vegetables and mineral nutrient absorption multi-span greenhouse nursery cost, but also conducive to spore germination and infection. Therefore, the need for ventilation, promote shed humid air is exchanged with outside air humidity build multi-span greenhouse nursery, can effectively reduce the relative humidity in the greenhouse. Features greenhouses: the greenhouse air component. Because of mulch, greenhouse air flow and exchange restrictions, tall plants in the vegetable, leafy, the change in the concentration of carbon dioxide in the air shed very intense. Before sunrise the morning due to the release of crop and soil respiration, shed carbon dioxide concentration is 2-3 times higher than the concentration of multi-span Pengwai nursery greenhouse construction companies (about 330PPM); 8-9 while later, with the leaf photosynthesis increases, can be reduced to 100PPM below. Construction of multi-span greenhouse seedling nursery greenhouses _ _ Zhengzhou Townhouse Communications Technology provided by Anyang City Communications Technology Limited. Anyang City Communications Technology Co., Ltd. (www.aytlkj.com) (www.aytlkj.com) strong, credible, in Anyang, Henan agricultural supplies industry has accumulated a large number of loyal customers. The company better work attitude and continuous improvement of innovative ideas and Communications Technology will lead you into the brilliant work together for a better future! You can also access (www.aytlkj.com/supply_details_41023110.html), for more information about the company.