تأثیر خاک و آب متأثر از پساب شهری بر عملکرد نهال‌‌های یک‌‌ساله سه کلن صنوبر تبریزی (.Populus nigra L)

نوع مقاله : علمی- پژوهشی

نویسندگان

1 نویسنده مسئول، استادیار، مؤسسه تحقیقات جنگلها و مراتع کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران

2 دانشیار، مؤسسه تحقیقات جنگلها و مراتع کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران

3 استادیار، مؤسسه تحقیقات جنگلها و مراتع کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران

چکیده

در پژوهش پیش‌رو، تأثیر خاک و آب متأثر از پساب شهری بر عملکرد نهال‌های یک‌ساله سه کلن صنوبر تبریزی (Populus nigra L.) در ایستگاه تحقیقاتی البرز بررسی شد. به‌این‌منظور، آزمایشی در قالب فاکتوریل براساس طرح کامل تصادفی با دو متغیر 1) خاک و آب در دو سطح (شاهد و خاک و آب متأثر از پساب شهری جمع‌آوری‌شده از جنوب تهران) و 2) سه کلن صنوبر (P. nigra 62/154، P. nigra 62/127 و P. nigra 17/13) انجام شد. پس از یک فصل رویش در نهال‌های هر سه کلن صنوبر که با خاک و آب متأثر از پساب شهری تیمار شده بودند، افزایش معنی‌دار ویژگی‌های رویشی و زی‌توده نسبت به نهال‌های شاهد مشاهده شد. همچنین، تیمار خاک و آب متأثر از پساب شهری باعث افزایش معنی‌دار غلظت عناصر غذایی اصلی، ریزمغذی­ها و نیز فلزات سنگین (نیکل، کروم و سرب) در ریشه و اندام هوایی هر سه کلن صنوبر شد. بیشترین جذب و تجمع آهن، مس و فلزات سنگین در ریشه مشاهده شد، درحالی‌که جذب و تجمع روی و منگنز در برگ بیشتر بود. بین سه کلن مورد مطالعه ازنظر جذب و تجمع عناصر غذایی و فلزات سنگین در اندام‌های گیاهی، تفاوت معنی‌دار وجود نداشت، اما تأثیر کلن بر اغلب ویژگی‌های رویشی و زی‌توده، معنی‌دار بود. به‌طوری‌که بیشترین قطر و طول ساقه و تولید زی‌توده ریشه،‌ ساقه،‌ برگ و کل گیاه در نهال‌هایP. nigra 62/154 تیمارشده با خاک و آب متأثر از پساب شهری مشاهده شد. نتایج پژوهش پیش‌‌رو نشان داد که برای زراعت چوب در اراضی متأثر از پساب‌های شهری می‌توان از هر سه کلن صنوبر تبریزی با اولویت کلن P. nigra 62/154 استفاده کرد.

کلیدواژه‌ها

عنوان مقاله [English]

Effect of soil and water affected by municipal effluent on performance one-year-old plants of three black poplar (Populus nigra L.) clones

نویسندگان [English]

  • A. Salehi 1
  • M. Calagari 2
  • F. Ahmadloo 3
1 Corresponding author, Assistant Prof., Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran
2 Associate Prof., Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran
3 Assistant Prof., Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran
چکیده [English]

    In this study, the effect of soil and water affected by municipal effluent on the performance of three poplar clones of Populus nigra L. after one year was investigated in a factorial experiment with two factors (1- soil and water in two levels and 2- poplar clones in three levels) based on the completely randomized design with five replications. After one year, in three poplar clones, significant increase in growth and biomass parameters of plants treated by soil and water affected by municipal effluent was observed. In three poplar clones, the significant increase of nutrients and heavy metals in organs of plants treated by soil and water affected by municipal effluent was observed. In three clones, Fe, Cu, Ni, Cr and Pb were mainly accumulated in roots, whereas Zn and Mn showed the highest concentrations in leaves. The three poplar clones did not show statistically significant differences in terms of uptake and accumulation of nutrients and heavy metals in plant organs. The effect of clone on most growth and biomass parameters was significant (p ≤ 0.01). The highest growth and biomass rates were seen in plants of P. nigra 62/154 treated by soil and water affected by municipal effluent. The results of the present study showed that for wood farming in lands affected by municipal effluent, all three poplar clones can be used by prioritizing the P. nigra 62/154 clone.

کلیدواژه‌ها [English]

  • Biomass
  • heavy metal
  • nutrients
  • wastewater
  • wood farming

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