花椰菜(Brassica oleracea L.var.botrytis L)属十字花科芸苔属一年生植物,俗称菜花,颜色乳白,口感脆爽,烹调的方法多样,是老百姓餐桌上的常见蔬菜,具有较高的经济意义。但花椰菜适应生长的环境为前期高温,后期低温,一直以秋栽为主,而春季的气候特点会使花椰菜在苗期遇到低温,生长不良;而到了结球期又会受到高温的影响,出现僵化苗、先期现球、散花等现象, Broccoli (Brassica oleracea L.var.botrytis L) is a cruciferous Brassica annual plant, commonly known as cauliflower, color milky white, crisp taste, the cooking method is diverse, common vegetables on the table of ordinary people, with high economic significance . However, cauliflower to adapt to the growth environment for the early high temperature, late low temperature, autumn planting has been the main, and the climatic characteristics of spring will make cauliflower seedlings encountered low temperature, poor growth; and the knot will be subject to high temperature, Emergence of rigid seedlings, pre-existing ball, scattered flowers and other phenomena,