اثر سطوح مختلف کود نیتروژن بر رشد رویشی و زایشی گیاه دارویی همیشه بهار (Calendula officinalis L.)

الموضوعات : بوم شناسی گیاهان زراعی

فرزانه بهادری ¹ , محمد کاظمی ² , الهام مرتضی ³

1 - عضو هیأت علمی مرکز تحقیقات کشاورزی و منابع طبیعی استان سمنان
2 - عضو هیأت علمی سازمان تحقیقات و آموزش کشاورزی استان سمنان
3 - عضو باشگاه پژوهشگران جوان دانشگاه آزاد اسلامی واحد شهر قدس

تاريخ الإرسال : 04 الخميس , ربيع الثاني, 1434 تاريخ التأكيد : 03 الإثنين , رجب, 1434 تاريخ الإصدار : 11 الأحد , جمادى الثانية, 1434

الکلمات المفتاحية: عملکرد, کود, همیشه بهار, رشد رویشی, رشد زایشی,

ملخص المقالة :

به منظور بررسی اثر سطوح مختلف کود نیتروژن بر عملکرد رویشی و زایشی گیاه دارویی همیشه بهار، آزمایشی در قالب طرح بلوک های کامل تصادفی با سه تکرار در ایستگاه تحقیقات گیاهان دارویی سمنان اجرا شد. تیمارها شامل کاربرد چهار سطح کود نیتروژن از منبع نیترات آمونیوم ( (شاهد) 0، 100، 200 و 400 کیلوگرم در هکتار) بودند که در سه مرحله رشد گیاه استفاده شدند. صفات اندازه گیری شده شامل وزن‎تر و خشک اندام هوایی، وزن تر و خشک برگ، وزن تر و خشک ساقه، ارتفاع گیاه، قطر تاج پوشش، قطر گل و وزن‎تر و خشک گل بودند. نتایج نشان داد که اثر کود نیترات آمونیوم به استثنای ارتفاع گیاه و وزن خشک اندام هوایی، بر همه صفات معنی دار بود. کاربرد کود، صفات رویشی و زایشی گیاه همیشه بهار را افزایش داد. بیشترین وزن خشک گل با کاربرد 400 کیلوگرم کود از منبع نیترات آمونیوم به‎دست آمد. با توجه به این نکته که گل های همیشه بهار، اندام اقتصادی آن است، بنابراین کاربرد تیمار 400 کیلوگرم در هکتار کود از منبع نیترات آمونیوم بهترین سطح کودی توصیه شده به منظور کسب بیشترین وزن خشک گل همیشه بهار می‎باشد.

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