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为探明氮钾施用量对青花菜植株生长、花球形成、产量以及品质的影响，以锯木屑、炉渣和栽培过食用菌的棉籽壳为材料，组成复合基质，进行了无土栽培青花菜的研究．结果表明，每株施用１５ｇ尿素＋１０ｇ氯化钾（Ｎ１５Ｋ１０）处理花球形成最早、品质优、产量较高，施肥经济，总体表现最好；每株施用３０ｇ尿素＋１０ｇ氯化钾（Ｎ３０Ｋ１０）处理产量最高、品质较优，施肥较经济；而每株施用３０ｇ尿素＋３０ｇ氯化钾（Ｎ３０Ｋ３０）处理表现最差．在试验范围内，适当提高氮肥用量有利于增加产量，而钾肥水平过高反而明显降低品质，影响产量
In order to find out the effect of nitrogen and potassium fertilization on the growth of broccoli, the formation of flower buds, the yield and the quality of the broccoli, the sawdust, slag and the cotton seed shell of the edible fungus were used as the materials to form the composite substrate. Research. The results showed that the treatment of 15g urea + 10g potassium chloride (N15K10) per plant per plant resulted in the earliest formation of flower buds, with good quality and high yield, with the best economic performance. The yield was the best when treated with 30g urea + 10g potassium chloride (N30K10) Highest, better quality and more economical fertilization. However, the treatment with 30g urea + 30g potassium chloride (N30K30) per plant showed the worst performance. In the test range, the appropriate increase in nitrogen fertilizer is conducive to increasing the yield, but excessive levels of potassium but significantly reduce the quality, affecting the yield