Significant differences were detected between different types of K fertilizers, with potassium sulfate having better effects on Vc than potassium chloride at medium and high fertilization rates.

• 钾肥可降低氨基酸总量和各种类氨基酸含量，氯化钾处理花椰菜氨基酸含量高于硫酸钾，特别是谷氨酸和丙氨酸含量。