推荐回答(2个)
关于无花果的问答、文章等我写过很多次了,但关于施肥的问题仅是一笔带过,并没有作详尽的介绍。今天借题主的提问,在此作一详述,有不足之处请探讨哈。

费话少说,咱们直接进入主题哈。
第一种栽培方式,盆栽无花果树的施肥
无花果盆栽既可食用,又可观赏,可培育成上百年的老桩。
在选取一株无花果苗后,盆中填满营养土,如作物秸秆肥土,菜园土,沙土,再加少量的腐熟厩肥拌匀即可。
追肥方面可如此做:
无花果树刚上盆时不宜追施浓肥,以防影响根系的生长,可追淡肥。如冬天追发酵好后饼肥水兑十几倍的水等,可半月追一次即可。等到树势重新恢复生长之后再加大肥液的浓度。
盆栽无花果树正常结果后,早期可以追2次尿素液,也可10天左右追一次加水的有机肥液。春季长出新梢后应追一次腐熟的饼肥或粪肥,促进枝旺,叶茂,果早熟。坐果后在其快速生长前可适当追点磷钾肥,也可喷磷酸二氢钾。秋季要追少量的氮磷钾复合肥,增强树体

第二种,庭院栽培无花果树的施肥
庭院栽培无花果很令人喜爱,因为无花果树生病虫害少,而且树形优美,果实营养丰富,是庭院栽培果树的首选。
无花果庭院栽培首先要挖大坑,将表土和心土分在两边,用彻底腐熟的有机肥同表土混匀,然后填入坑底压实,栽去无花果树,填入营养成分较多的表土,后填心土,浇水埋实。
庭院栽植无花果树可以多追有机肥,尽量少追化肥。在施足基肥的基础上,每年秋季落叶后追肥一次。氮磷钾复合肥适当配合,氮肥不宜过多,否则徒长结果少。
春天2–3月份可以追施厩肥,堆肥,饼肥等,配合适量的复合肥,可较长时间的供应果树生长所需的营养,对培养健壮树势很有利。
无花果树的追肥可分夏肥和秋肥,因为它可结夏果和秋果。夏肥可在5–9月份追2–3次,秋肥在10月份追。其中5–7月份需肥量较大,可分别在6月上旬和7月上旬各追氮磷钾复合肥一次。
8月上旬至10月中旬是秋果成熟期,幼树可在8月中旬追肥一次,成龄树可分别在8月中旬和9月中旬各追一次。追肥以氮磷钾复合肥为主,配微量元素肥。此次追肥可增强树势,果实成熟早,产量高。
10月中旬后树体转入养分积累期,可以进行秋末追肥了,但施肥量不宜过多,以防引起秋梢的二次生长。施肥时期是在10月下旬为佳,促宜过早或过晚,以有机肥配氮磷钾复合肥为好。但需注意,1–2年生的幼树不宜秋末追肥。
第三种,大田栽培无花果树的施肥
大田栽培的无花果树,在幼树和初果期,可以在行间套种豆科作物和蔬菜,以增加土壤有机质。
大田无花果树一般是在落叶后的11–12月份追施基肥,以充分腐熟的有机肥为主,可在行间挖沟施入。
第一次追肥在新梢旺长的5月份,以氮肥为主,如尿素,碳酸氢铵,硫酸铵等。
第二、三次追肥可在果实成熟期的8–10月份,以氮磷钾复合肥为主。施肥方法同基肥一样。
在无花果树的生长后期,随着果实的采摘,每隔10天左右喷施一次叶面肥,如磷酸二氢钾,尿素溶液等,在8–9月份果实的成熟期可喷2–3次的硝酸钙。

好了,关于无花果树的追肥问题就是这些。在大田栽植无花果树,应采取深坑浅栽的方法,每坑中施入腐熟的人粪尿,过磷酸钙等,与土拌匀,同时可结合覆草和种草,以提高土壤肥力。
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