甘蓝在各个生育阶段,对各种营养元素的要求不同。幼苗期和莲座期,需要较多的氮,莲座期对氮的吸收达到高峰,同时开始吸收较多的磷和钾;叶球形成期,吸收钾、磷达到最高峰。因此甘蓝的施肥,不仅要考虑施肥量和种类,同时也要注意施肥时期,施足底肥,适时按需追肥。 Cabbage in all stages of birth, the requirements of various nutrients are different. Seedling stage and rosette stage need more nitrogen, and the absorption of nitrogen reaches its peak during rosette stage, meanwhile it begins to absorb more phosphorus and potassium. The peak of absorption of potassium and phosphorus reaches the peak during the formation of leaf ball. Therefore, the fertilization of cabbage, not only to consider the amount and types of fertilizers, but also pay attention to the fertilization period, Shi enough base fertilizer, timely top-dressing.