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一、需肥特性菜花又名花椰菜。在生长发育过程中对氮肥的需要量较大,而对磷和钾的吸收则集中于花球生长阶段。一般来说,营养生长对氮肥需要量较大,而且以硝态氮肥的效果最好,其次是钾,只有在花球形成期需要较多的磷。研究表明,每生产1000千克花椰菜,其氮、磷、钾的吸收量为:氮13.4千克,五氧化二磷3.93千克,氧化钾9.59千克,其比例大体为:1∶0.3∶0.7。菜花对微量元素硼的需求较多,
First, the need fertilizer characteristics Cauliflower, also known as cauliflower. In the process of growth and development, the demand for nitrogen fertilizer is larger, while the absorption of phosphorus and potassium is concentrated in the flower ball growth stage. In general, vegetative growth requires a large amount of nitrogen fertilizer, and the nitrate nitrogen fertilizer is the best, followed by potassium, only need more phosphorus in the flower ball formation period. Studies have shown that for each 1000 kg cauliflower produced, the uptake of nitrogen, phosphorus and potassium is 13.4 kg N, 3.93 kg P 2 O 3 and 9.59 kg K 2 O. The ratio is approximately 1: 0.3: 0.7. Cauliflower boron on the demand for more elements,