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菜豆(Phaseolus vulgaris Linn)属豆科豆属植物,又名芸豆、四季豆,菜豆豆荚具有很高的营养价值。近年来,在华北地区利用春季在冷棚内栽培菜豆取得了较好的经济效益。冷棚指的是只有1层塑料膜,没有厚墙及两侧山墙的塑料大棚。由于其保温效果没有暖棚好,只适合在春季气温不是太低时使用。利用塑料冷棚种植菜豆不仅产量高于露地,品质也优于露地,并且还具有土地利用率高、成本低、结构简
Beans (Phaseolus vulgaris Linn) is a leguminous beans, also known as kidney beans, green beans, beans bean pods with high nutritional value. In recent years, the use of spring in North China in the greenhouse cultivation of beans has achieved good economic returns. Cold shed refers to only one layer of plastic film, there is no thick walls and gables on both sides of the plastic shed. Because of its insulation effect is not good warm, only suitable for use in the spring when the temperature is not too low. The use of plastic shed planting bean is not only higher than open field yield, quality is also better than open, and also has high land utilization, low cost, simple structure