我国北方雨水偏少,许多居民都把住房建成平顶结构。到目前为止,绝大部分房顶处于闲置,如果把房顶覆土进行改造,种植一些适宜的蔬菜会增加经济效益,尤其在耕地紧张的郊区,其意义更大。 房顶种植蔬菜,具有可行性: 一、多数蔬菜为浅根性作物 根系入土浅,主要分布在0～30厘米土层内,利用表土层养分和水分, Rainfall in northern China is less than normal, and many residents have built their houses into flat roof structures. So far, the vast majority of roofs are idle, if the roof covering transformation, planting some suitable vegetables will increase economic benefits, especially in tense suburbs of arable land, its greater significance. Roof planting vegetables, with the feasibility: First, most of the vegetables are shallow roots into the soil shallow, mainly distributed in 0 to 30 cm soil layer, the use of topsoil nutrients and water,