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1冬春棚菜冻害预防措施增加覆盖物夜间在大棚四周加围草苫,温度可提高1～2℃,在草苫上再覆盖一层薄膜,不但可以挡寒风,还可防止雨水打湿草苫,从而减少因水分蒸发而引起的热量散失。
1 winter chingchuan frost damage prevention measures to increase coverage at night around the greenhouses Add grass, the temperature can be increased by 1 ~ 2 ℃, and then covered with a layer of grass on the film, not only can block the wind, but also to prevent rain wet Grass 苫, thus reducing the loss of heat due to evaporation of water.