تاثیر آبیاری با مکمل آبسار بر رشد گونه ارزن وحشی (Panicum eruciferum)

نوع مقاله: مقاله پژوهشی

نویسندگان

1 کارشناسی ارشد بیابان‌زدایی، گروه احیاء مناطق خشک و کوهستانی، دانشکده منابع طبیعی، دانشگاه تهران، کرج، ایران

2 استاد، گروه احیاء مناطق خشک و کوهستانی، دانشکده منابع طبیعی، دانشگاه تهران، کرج، ایران

چکیده

محدودیت منابع آب کشور و اختصاص سهم بزرگی از آن به بخش کشاورزی و منابع طبیعی، افزایش کارآیی مصرف و صرفه جویی آب را امری ضروری و حیاتی نموده است.  در این زمینه استفاده از فن آوری نوین با کاربرد برخی مواد افزودنی مانند مکمل­ها  به خاک در کاهش تنش­های خشکی در مناطق خشک و نیمه خشک می­تواند نقش مهمی ایفا کند. در این پژوهش تاثیر مکمل آبسار بر ویژگی­های فیزیولوژیکی گونه ارزن وحشی Panicumeruciferumبررسی شد. جهت افزایش دقت از گلخانه برای محیط کشت استفاده گردید. تیمارهای مورد استفاده در این بررسی، شاهد با آبیاری آب معمولی، مکمل آبسار در دو غلظت (10000/1 و 6000/1) و در سه نوبت آبیاری (یک روز، سه روز، شش روز) بود. نتایج نشان دادند که مکمل آبسار با غلظت 10000/1 سبب افزایش طول ریشه، طول ساقه، وزن خشک ریشه و ساقه و نیز وزن مخصوص ریشه (SRL) در گیاه شد همچنین استفاده از آبسار سبب افزایش دور آبیاری گردید. اما در افزایش نسبت طول ریشه به ساقه غلظت 6000/1 مکمل باعث ایجاد تفاوت معنی­دار در این صفات گردید. ولی آبیاری با غلظت­های 10000/1 و 6000/1 مکمل آبسار بر نسبت وزن خشک ریشه و ساقه اثر معنی­دار درسطح یک درصد نداشت. با افزایش تنش از دوره آبیاری روزانه به دوره آبیاری هر شش روز، نسبت طول ریشه به ساقه و نسبت وزن خشک ریشه به ساقه افزایش یافت.

کلیدواژه‌ها


عنوان مقاله [English]

The influence of irrigation with ABSAR supplement on the growth of Panicum eruciferum

نویسندگان [English]

  • saeid shojaei 1
  • Mohammad Jafary 2
2 Professor, Department of Reclamation of Arid and Mountainous Regions, Faculty of Natural Resources, University of Tehran, Karaj, Iran
چکیده [English]

Limitations of water resources in the country and allocating a large share of water to agriculture section and natural resources is considered as an essential and vital matter to increase the efficiency of consumption and saving water. In this context, using modern technology with the use of some additive materials like supplements to the soil can play a major role in reducing drought stress in arid and semi-arid areas. In this study, the effect of ABSAR supplement was investigated on physiological features of “Panicum eruciferum” species. Greenhouses were used to increase the accuracy of the culture medium. Treatments used in this study were included normal irrigation, ABSAR supplement at two concentrations (1/10000, 1/6000) and three times of irrigation (one-day, three- day and six-day). The results showed that ABSAR supplement at a concentration of 1/10000 increased root length, stem length, root and stem dry weight as well as root specific weight. Using ABSAR also increased the irrigation intervals. However, the supplement at a concentration of “1/6000” caused a significant difference in increasing the ratio of root to stem length. Irrigation with ABSAR supplement at a concentration of “1/10000” and “1/6000” had no significant effect on the ratio of root-to-shoot dry weight. The ratio of root- to-shoot length and the ratio of root-to-shoot dry weight increased with increasing of stress from daily irrigation to every six-day irrigation.

کلیدواژه‌ها [English]

  • Irrigation regime
  • ABSAR supplementary
  • physiological features
  • Tension
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