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棚（室）放风是菜农的一句行话 ,是棚（室）生产中的一项重要作业。所谓棚（室）放风 ,即打开通风口通风换气的意思。放风 ,一可放出棚（室）内的水蒸气 ,降低湿度。二是为了室内能有充足的二氧化碳气体。我省大部分地区的棚（室）都是用稻草或芦苇做的草苫 ,这类不透明的覆盖
Shed (room) ventilation is a vegetable farmers jargon, shed (room) in the production of an important operation. The so-called studio shed (room), that is, the meaning of open ventilation ventilation. Wind, a shed shed (room) of the water vapor, reduce humidity. The second is to have sufficient indoor carbon dioxide gas. Most of the province’s shed (room) are made of straw or reed grass 苫, such opaque cover