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اثر کیفیت نور و مدت زمان نوردهی ال ای دی بر رشد کاهو پرطاووسی در کشت طبقاتی | ||
| تحقیقات سامانهها و مکانیزاسیون کشاورزی | ||
| دوره 25، شماره 89، فروردین 1403، صفحه 15-30 اصل مقاله (1.6 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/amsr.2024.366698.1497 | ||
| نویسندگان | ||
| غلامرضا چگینی* 1؛ ساسان علی نیائی فرد2؛ محمدرضا خرم تبریزی3 | ||
| 1دانشیار دانشگاه تهران- پردیس ابوریحان | ||
| 2گروه باغبانی، دانشکده فناوری ابوریحان،دانشگاه تهران، تهران ایران | ||
| 3فنی کشاورزی، دانشکده فناوری ابوریحان، دانشگاه تهران، تهران،ایران | ||
| چکیده | ||
| بکارگیری محیط های کنترل شده با کشت طبقاتی با نور مصنوعی یکی از راههای جایگزین تولید محصولات کشاورزی در فضای کنترل شده می باشد. با طیف نورهای مختلف ناشی از لامپ های ال ای دی می توان شرایط فتوسنتز گیاه را در کنار سایر پارامترهای مهم رشد گیاه در این گلخانه ها در بالاترین شکل فراهم نمود. در این تحقیق با استفاده از یک محیط کشت طبقاتی رشد کاهو پر طاووسی در طیف های مختلف نور مصنوعی مورد ارزیابی قرار گرفت. در این گلخانه تولید کاهو سه ترکیب طیف نوری متفاوت: (100% قرمز)، (75% قرمز + 25% آبی)، (50% قرمز + 25% آبی + 25% قرمز دور)، با سه تیمار نوردهی 12، 18 و 24 ساعته با شدت نور 250 میکرومول بر مترمربع بر ثانیه برای کشت کاهو با سیستم تغذیه هیدروپونیک مورد ارزیابی قرار گرفت. 216 گیاه کاهو در این گلخانه به صورت کامل رشد کردند و طیف نوری قرمز بیشترین عملکرد را داشت. با بررسی دقیق کارایی دستگاه فتوسنتز و اثرات متقابل کیفیت نور و مدت زمان نوردهی بر روی عملکرد محصول کاهو واریته پرطاووسی این نتیجه حاصل شد که ترکیب دقیق طیف نور و فتوپریود مناسب باعث افزایش عملکرد کاهو می شود. طیف نوری قرمز دور بیشترین نقش را در ارتفاع گیاه داشت. بیشترین وزن تر و خشک اندام هوایی در نوردهی 24 ساعته و در تیمارهای قرمز و آبی قرمز بدست آمد. وزن تر و خشک ریشه با کمترین مقدار نوردهی 12 ساعت به ثبت رسید.همچنین نوردهی دائمی باعث افزایش رشد رویشی گیاهان می شود. | ||
| کلیدواژهها | ||
| فتوسنتز؛ نور ال ای دی؛ محیط کنترل شده با کشت طبقاتی؛ کاهو | ||
| عنوان مقاله [English] | ||
| The effect of light quality and photoperiod of LED on the growth of lettuce in a vertical greenhouse | ||
| نویسندگان [English] | ||
| Gholamreza Chegini1؛ Sasan Aliniaeifard2؛ Mohammadreza Khoramtabrizi3 | ||
| 1Agrotechnology Department, College of Aburaihan , University of Tehran, Tehran, IRAN. Postal Code: 3391653755 | ||
| 2Department of Horticulture, Aburihan Faculty of Technology, Tehran University, Tehran, Iran | ||
| 3Agriotechnology, Aburihan Faculty of Technology, University of Tehran, Tehran, Iran | ||
| چکیده [English] | ||
| Using controlled environments with stratified cultivation with artificial light is one of the alternative ways to produce agricultural products in controlled space. With the spectrum of different lights caused by LED lamps, the conditions of plant photosynthesis can be provided in the highest form along with other important parameters of plant growth in these greenhouses. In this research, the growth of lettuce was evaluated in different spectrums of artificial light using a stratified culture medium. In this greenhouse, three different combinations of light spectra are produced in this greenhouse: (100% red), (75% red + 25% blue), (50% red + 25% blue + 25% far red), with three exposure treatments of 12, 18 and 24 hours with light intensity of 250 μmol/m2/s was evaluated for lettuce cultivation with hydroponic feeding system. 216 lettuce plants were fully grown in this greenhouse and the red light spectrum had the highest performance. By carefully examining the efficiency of the photosynthesis device and the mutual effects of light quality and exposure time on the performance of Pertavosi variety lettuce, it was concluded that the precise combination of light spectrum and appropriate photoperiod increases the yield of lettuce. The far-red light spectrum played the greatest role in plant height. The highest fresh and dry weight of shoot was obtained in 24-hour exposure and in red and blue-red treatments. The fresh and dry weight of the root was recorded with the lowest amount of exposure of 12 hours. َAlso permanent exposure increases the vegetative growth of plants. | ||
| کلیدواژهها [English] | ||
| Photosynthesis, LED light, vertical greenhouse, lettuce | ||
| مراجع | ||
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