二、番红花的栽培管理番红花露地栽培,春花种栽植期宜在8～10月,植球深10厘米左右,行株距根据种球大小可适当调整,一般每平方米植球数为45～100头,每株距离掌握在10～15厘米左右。秋花种的栽植期可提前到6～7月。番红花地栽一次后,可相隔3～4年再挖起球茎重栽,但应避免连作。生长期在开花前后分别进行一次追肥,特别是花后增加硫酸钾等钾肥,有利 Second, the cultivation and management of crocus Crocus open cultivation, planting of spring flowers should be in August to October, the planting depth of about 10 cm, row spacing according to the ball size can be adjusted appropriately, the general number of balls per square meter for the 45 ~ 100 head, each plant distance control in about 10 to 15 cm. Autumn planting species can be planted in advance to 6 to 7 months. Saffron planted once, but after 3 to 4 years and then dredged bulb replanting, but should be avoided. Growth stage before and after flowering in a top dressing, especially after the increase of potassium sulfate and other potash fertilizer, favorable