花卉合理施肥有何原则
花卉的合理施肥要掌握“适时、适量、适当、氮磷钾为主、微肥为辅”的原则。
①适时即按花卉不同生长期及不同季节施肥。花卉新栽培时不施肥;幼苗期,施肥次数少,浓度要低;生长旺盛期,要勤施肥,浓度可稍高;开花结果期,要适度的施肥;休眠或半休眠期,应停止施肥。春、夏初季花卉生长旺盛,应勤施肥;秋季花卉生长缓慢,应少施肥;冬季花卉处于休眠期,应停止施肥。
②适量即施肥的数量和次数要合理,过多过少都会影响花卉的正常生长发育。一般从立春后,每隔7~10天施1次稀薄肥,立秋后每隔10~20天施1次,酷暑高热和冬季停止施肥。
④氮、磷、钾为主是指肥料的主体为氮、磷、钾,根据花卉各个阶段所需养分,及时补充,以利花卉的生长发育。
⑤微肥为辅是指起辅助补充作用的微肥不可缺,不能替代,它能使花卉对营养成分的吸收更加全面,生长更良好。(推荐阅读:给花浇水的原则是什么?)
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