上世纪80~90年代,上海重要的公共场所、景观大道、高档住宅小区流行由草盆花为素材的花卉大色块。每年更换3~4次,成本投入大且造成人工浪费。90年代末,以色叶小灌木为素材所构造的片栽色块替代了花卉素材的色块,这是一个进步,也是正确的选择。然而到了本世纪的2013年,上海乃至华东地区遇到了百年未见的干旱,数月未降透雨, 80s and 90s of last century, Shanghai’s major public places, landscape Avenue, upscale residential area popularized by grass flower flowers for the material blocks. 3 to 4 times a year, the cost of investment and resulting in artificial waste. The late 90s, the small shrubs for the material structure of the film patches of flowers instead of color material blocks, this is an improvement, but also the right choice. However, by 2013, Shanghai and even the eastern part of China have encountered unprecedented drought for several hundred years,