进入8月底9月初,秋高气爽,大白菜生长进入后期,这时也是大白菜重量显著增长的时期.这个时间,如果水肥供应得当,注意病虫的防治,产量可大幅度增加。一、在莲座期也是大白菜卷心抽筒期,外叶迅速生长,根系中85%的根分布在土壤表层.这个时期(一般在9月上旬),应灌一次大粪稀水,每亩要用2000公斤,如 Into the end of September early September, autumn and winter, Chinese cabbage growth into the late, then the weight of cabbage was significantly increased this period, if water and fertilizer supply properly, pay attention to the prevention and control of pests and diseases, the output can be greatly increased. First, in the rosette period, the Chinese cabbage is also a cucumber hearth, the outer leaves grow rapidly, and 85% of the root roots are distributed on the surface of the soil. During this period (usually in early September) With 2000 kg, as