پاسخ فیزیولوژیکی و مورفولوژیکی خیار گلخانه‌ای به کاربرد انواع خاکپوش‌ تحت تنش کم آبی

نوع مقاله: مقاله کامل

نویسندگان

1 دانشجوی سابق کارشناسی ارشد، گروه علوم باغبانی و زراعی، دانشکده علوم کشاورزی و صنایع غذایی، دانشگاه آزاد اسلامی، ‏واحد علوم و تحقیقات، تهران

2 استاد، گروه علوم باغبانی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج ‏

3 دانشیار، مؤسسه تحقیقات فنی و مهندسی کشاورزی، سازمان تحقیقات آموزش و ترویج کشاورزی، کرج

چکیده

به‌منظور ارزیابی برخی صفات فیزیولوژیکی و مورفولوژیکی خیار گلخانه­ای تحت تأثیر سطوح مختلف تنش کم آبی و انواع خاکپوش، آزمایشی به‌صورت کرت‌های خردشده در قالب طرح بلوک‌های کامل تصادفی و در سه تکرار انجام شد. سطوح مختلف آبیاری در سه سطح 100، 80 و 60 درصد نیاز آبی به‌عنوان کرت اصلی و سطوح خاکپوش در چهار سطح بدون خاکپوش، خاکپوش پلاستیک سیاه، خاکپوش پلاستیک شفاف و خاکپوش چیپس چوب به‌عنوان کرت فرعی در نظر گرفته شد. در این آزمایش ارتفاع بوته، قطر ساقه اصلی، درصد ماده خشک ساقه و برگ، کلروفیل a، b و کل، زودرسی، عملکرد کل ، عملکرد خیار درجه 1 و 2 و کارایی مصرف آب مورد ارزیابی قرار گرفت.نتایج نشان داد بیشترین مقدار صفات در سطح آبیاری 100 درصد نیاز آبی حاصل گردید و با اعمال سطح آبیاری 80 و 60 درصد نیاز آبی، صفاتی نظیر ارتفاع بوته، قطر ساقه، کلروفیل a، b و کل، عملکرد کل و زودرسی کاهش پیدا کردند. بالاترین عملکرد خیار درجه 1 و کل به‌ترتیب با 3514 و 3684 گرم در بوته در 100 درصد نیاز آبی و با کاربرد خاکپوش چیپس چوب بدست آمد.نتایج پژوهش حاضر حاکی از اثربخشی سودمند کاربرد خاکپوش چیپس چوب در اکثر ویژگی­های فیزیولوژیکی و مورفولوژیکی خیار گلخانه­ای مورد مطالعه به دلیل حفظ رطوبت خاک و استفاده بهینه آن در مدیریت آبیاری بود، که می­تواند در افزایش بهره­وری محصولات گلخانه­ای به ویژه در مناطق خشک و نیمه­خشک مؤثر باشد.

کلیدواژه‌ها


عنوان مقاله [English]

Physiological and morphological response of greenhouse cucumber to the application ‎of different mulches under water deficit stress

نویسندگان [English]

  • Pejman Mashinchi 1
  • Mohammad-Reza Hassandokht 2
  • Hossein Dehghani Sanij 3
1 Former M.Sc. Student, Department of Horticulture Sciences and Agronomy, Faculty of Agriculture and Food Science, Science and ‎Research Brach, Islamic Azad University, Tehran, Iran
2 Professor, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
3 Associate Researcher, Agricultural Engineering Research Institute (AERI), Agricultural Research Education, and Extension ‎Organization (AREEO), Karaj, Iran
چکیده [English]

To evaluate the effect of different levels of irrigation as well as different types of mulches on some physiological and morphological traits of greenhouse cucumbers an experiment was conducted as split plot based on randomized complete blocks design with three replications. Irrigation were considered as the main plot in three levels (100, 80 and 60 percent of water requirement) and mulch levels were considered as subplot in four levels (no mulch, black plastic, transparency plastic and wood chips). Plant height, stem diameter, percent of dry weight of shoot and leaf, chlorophylls a and b as well as total chlorophyll, early yield, yield of cucumber grade1 and 2, total yield and water use efficiency were evaluated. The results showed the most levels of most features were attained at 100 percent level of irrigation. Some traits such as plant height, shoot diameter, chlorophylls a and b as well as total chlorophyll, and yield were decreased by applying 1evels of irrigation (100, 80 and 60 percent of water requirement). The highest yield of cucumber grade1 and total (3514 and 3684 g/plant, respectively) were recorded for 100 percent level of irrigation with adoption of wood chips mulch. The results of this research represented that applying wood chips mulch was completely efficient and beneficial in most studied physiological and morphological features of cucumber because of maintaining soil moisture and optimizing application of that in irrigation management that can increase productivity of greenhouse crops especially in arid and semiarid areas.

کلیدواژه‌ها [English]

  • Chlorophyll
  • Mulch
  • Water use efficiency
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