بررسی اثر غلظت پتاسیم محلول غذایی بر رشد و عمر پس از برداشت گل سوسن (Lilium spp.) درکشت هیدروپونیک

Subject Areas : Journal of Ornamental Plants

علی سحری مقدم ¹ (گروه باغبانی، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران)
شیرین سیدنصیر ² (گروه علوم و مهندسی خاک، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران)

Received: 2020-10-01 Accepted : 2020-12-25 Published : 2020-12-01

Keywords: عناصر غذایی, ماندگاری, کمبود,

Abstract :

لیلیوم با نام علمی Lilium longiflorum یک گل پیازدار شاخه بریده است. در فرآیند تولید گل لیلیوم، کیفیت گل اهمیت ویژه­ای دارد که یکی از مهم­ترین عوامل موثر بر آن، تغذیه صحیح می­باشد. تغذیه متعادل و مطلوب در سیستم­های هیدروپونیک به راحتی امکان­پذیراست. درمقابل، مدیریت نادرست محلول غذایی سبب کاهش چشمگیر رشد و نمو گیاهان و اختلال در تولید کمی و کیفی محصول می­شود. عناصر غذایی اغلب اثر متقابل داشته و تشخیص کمبود و یا سمیت عنصر و یا عناصر غذایی با مطالعات آزمایشی در شرایط کنترل­شده انجام می­گیرد. به­منظور مطالعه تأثیر غلظت­های مختلف پتاسیم بر رشد سوسن و عمر پس از برداشت آن، یک آزمایش هیدروپونیک در قالب طرح  کاملاً تصادفی با غلظت­های مختلف پتاسیم در سه سطح 0، 3 و 6 میلی­مولار در سه تکرار در بستر کاشت ثابت پرلیت 40% + ماسه 60% اجرا گردید. نتایج نشان داد که اغلب شاخص­های رشد گیاه به ویژه وزن خشک اندام هوایی با مصرف پتاسیم در محلول غذایی کاهش یافت، اما در غلظت 6 میلی­مول پتاسیم در محلول غذایی، عمر پس از برداشت گل افزایش  معنی­دار نسبت به شاهد داشت.

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