大丽花的水肥管理
大丽花喜肥。若肥料不足,将引起花径变小,品种退化,施肥要掌握以基肥为主,追肥为辅的原则。
幼苗期以氮肥为主,结合磷钾肥进行2~3次施肥,花蕾膨大期是大丽花施肥的关键,可追施2~2次磷钾肥,结合根外追肥,喷施1~2次0.05%的硼酸溶液,这对提高花朵的质量、成色,以及延长花期有良好的效果。大丽花在花蕾透色至盛花期不宜施肥,否则将导致花期缩短,舌状花僵硬畸形,降低观赏价值。初花后,可再施1~2次磷钾肥,以促使地下块茎根的增长发育。
显然,大丽花喜肥,只有施足基肥、勤施追肥,才能保证植株健壮、花朵艳丽。大丽花在施肥的同时要结合灌水,但不宜积水,幼苗期和暑天可适当增加灌水次数,收获前半月可停施浇水。
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