Greenhouse ventilation management: Spring graded ventilation should pay more attention. Vegetable greenhouse construction shed morning opened one hour later, open the vent 3-5 cm put a small wind manufacturers of vegetable greenhouses, the purpose is to shed moisture to escape, adding shed carbon dioxide for photosynthesis smoothly supplement raw materials. And other greenhouse vegetables when Pengwen rose to above 28 ℃, will gradually leaked mouth open, keeping the greenhouse temperature does not exceed 33 ℃ (for cucumber, gourd and other vegetables for thermophilic) either. The main types of greenhouses: toward choice. Should try to choose the location on a flat plot, greenhouse location is very important. Groundwater level is not too high, to avoid blocking the light of the mountains and buildings, for planting and breeding industry users, local pollution can not be built shed. Another area to consider the strong monsoon wind resistance of the selected greenhouse. General Greenhouse wind resistance should be more than eight. Vegetable greenhouses built Communications Technology (certified), Shijiazhuang vegetable greenhouses provided by Anyang City Communications Technology Limited. Anyang City Communications Technology Co., Ltd. (www.aytlkj.com) is Anyang, a leader in agricultural supplies, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Communications technology leadership in the staff warmly welcome all inquiries negotiations to create a better future for Communications Technology.