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上海地区的花菜品种比较多,各类早、中、晚熟花菜从6月中旬开始播种,到7月中旬播种结束。近年来郊县各乡的留种设施较完善,早、中熟花菜和杂交花菜大多在温室或中棚中留种,种籽一般较贵。这些花菜品种播种时正遇上海的梅雨季节,花菜播种后受雨水冲刷,会影响出苗和齐苗,甚至造成死苗。而采用防雨棚育苗,由于能有效地免受雨水冲刷,有利于多出苗,早齐苗,减少死苗。这几年我们严桥乡各村普遍推广防雨棚育苗,每两花菜种子出苗均在8000～10000株左右,取得了较好的经济效益。采用防雨棚育苗是花菜育苗的一项有效的抗灾措施,值得普遍推广。
Shanghai cauliflower varieties are more, all kinds of early, middle and late cauliflower began sowing from mid-June to mid-July sowing ended. In recent years, the suburbs of rural areas better facilities to stay species, early, middle and close cauliflower and hybrid cauliflower in the greenhouse or stay in the shed, the seeds are generally more expensive. When these cauliflower varieties sown in Shanghai when the rainy season, cauliflower after sowing by the rain, will affect the emergence and Qi Miao, and even cause dead seedlings. The use of shelter nursery, as can be effectively protected from the erosion of the rain, is conducive to more sprouting, early Qi Miao, reduce dead seedlings. In recent years, we Yanqiao village universal promotion rain canopy nursery, every two cauliflower seedlings are in the 8000 ~ 10000 or so, and achieved good economic returns. The use of shelter nursery is a cauliflower nursery an effective anti-disaster measures, it is worth promoting.