تاثیر سطوح مختلف آبیاری بر رشد و نمو زمین پوش های گل ناز(Portulaca grandiflora) و دم عقربی (Carpobrotus aciniformis)

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه باغبانی، دانشکده کشاورزی، دانشگاه تبریز

2 گروه مهندسی فضای سبز، دانشکده کشاورزی، دانشگاه تبریز

3 گروه علوم باغبانی، دانشکده کشاورزی، دانشگاه تبریز

4 دانشجوی دکتری گروه کشاورزی واحد پارس آباد مغان، دانشگاه آزاد اسلامی پارس آباد، مغان

چکیده

برای توسعه پایدار و مصرف بهینه آب در فضای سبز تاثیر تنش خشکی بر دو نوع زمین پوش دم عقربی و گل ناز بررسی شد. تیمار های آبیاری شامل 25%، 50%، 75% و 100% ظرفیت مزرعه بودند که یک ماه پس از کاشت گیاهان در گلدان ها و مستقر شدن آنها با آبیاری عادی، این تنش ها به مدت دو ماه اعمال شد. بعد از دو ماه اعمال تیمار، صفات رویشی اندازه گیری و در مورد گیاه گل ناز تعداد گل شمارش شد. نتایج نشان داد که گونه، تیمارها و اثر متقابل آنها بر صفات طول ساقه، تعداد برگ، وزن تر، وزن خشک، شاخص کلروفیل و تعداد گل (در مورد گل ناز) تاثیر معنی داری داشتند.  در بیشتر موارد گیاه دم عقربی در مقایسه با گل ناز کارایی بهتری داشت. همچنین اختلاف معنی­داری بین سطوح مختلف آبیاری برای پارامترهای فوق ثبت شد. تعداد گل در گیاه گل ناز بطور معنی داری تحت تاثیر میزان آبیاری قرار گرفت. هرچند تنش های شدید باعث کاهش معنی دار میزان رشد این گونه ها شد اما این گیاهان توانستند حتی تنش 25 درصد ظرفیت مزرعه را تحمل کرده و زنده باقی بمانند و در مواردی کاهش میزان آبیاری از 75% ظرفت مزرعه به 50% تفاوت معنی داری در نتایج ایجاد نکرد. لذا برای صرفه جویی در مصرف آب و داشتن منظری با گیاهان سالم و رشد مناسب از لحاظ تامین رضایت کاربران می توان آبیاری این گیاهان را به میزان 25 تا 50 درصد ظرفیت مزرعه کاهش داد.
 
 

کلیدواژه‌ها


عنوان مقاله [English]

Effects of Irrigation Levels on Growth and Development of the Groundcovers Moss Rose (Portulaca grandiflora) and Ice Plant (Carpobrotus aciniformis)

نویسندگان [English]

  • Shima Yosefzadeh 1
  • Saadollah Alizadeh 2
  • Mansor Matloobi 3
  • Hasan Shirafkan Ajirlo 4
چکیده [English]

For sustainable development and optimized water use, effect of drought stress on two groundcovers namely mose rose and ice plant was studied. Irrigation treatments were field capacities of 25, 50, 75 and 100 percent which were applied for two months on the established one month old plants. After the mentioned period of time vegetative traits were measured and in case of mose rose number of flowers were counted and ANOVA was conducted. The results indicated that the plant type (species), treatments (the applied drought stress levels) and their interactions had significant effects on the traits of shoot length, leaf number, fresh weight, dry weight, chlorophyll index and flower number (in case of mose rose). The ice plant was more efficient than mose rose for the most of measured traits. Also significant differences were observed for these parameters in applied irrigation levels. The flower number in mose rose was significantly affected by irrigation level. Although the sever stresses caused significant decrease of growth rate in these groundcovers but they tolerated and survived even at 25% FC of irrigation and in some cases there was not significant differences between 50 and 75 percent of FC. So in order to water conservation and have a landscape with healthy and acceptable plants from landscape users’ viewpoint the irrigation amount could be reduced to 50% of field capacity for these plants.
 
 

کلیدواژه‌ها [English]

  • Drought tolerance
  • Groundcover
  • Ice Plant
  • Landscape
  • Moss Rose
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