花椰菜氮磷钾施肥效应及其适宜用量研究

Studies on fertilization effect and suitable amounts of nitrogen phosphorus and potassium on cauliflower

花椰菜是永春县蔬菜种植的主栽品种之一。采用“3414”肥料试验设计方案，通过田间试验研究花椰菜氮磷钾肥效及其推荐施肥量，结果表明：施用适宜用量的氮磷钾肥料，花椰菜经济产量分别可增产179．8％、74．7％和122．3％；在本试验条件下，每667m。施肥量为N15．7～20．7kg、P2O54．9～8．1kg和K2O11．0～16．1kg，三要素平均比例为1：0．36：0．72。

Cauliflower is one of the main vegetable cuhivars planted in Yongchun County. In this paper, a field test on ferti- lization effect and suitable amounts of nitrogen, phosphorus and potassium on cauliflower was carried out by using ＂3414＂ experimental design method. The results showed that the economic yields of cauliflower could increase by 179.8%, 74.7% and 122.3% respectively by applying suitable amounts of nitrogen, phosphorus and potassium. And under this experimental conditions, the adequate fertilization amounts of N, P2 05 and K2 0 werel5.7 ～20.7 kg/667 m2 （235.5 ～ 310.5 kg/hmz ）, 4.9 ～ 8.1 kg/667 m2 （73.5 ～ 121.5 kg/hm2 ） and 11.0 ～ 16.1 kg/667 m2 （ 165 ～ 241.5 kg/hm2 ） respectively, the suitable ratio of three essential factors was 1：0. 6： 0. 4. Key words： Cauliflower; nitrogen, phosphorus and potassium; fertilizer efficiency; recommended fertilization rate