نوع مقاله : مقاله پژوهشی

نویسندگان

• معصومه عباسی خالکی ¹
• محمد جعفری ²
• علی طویلی ³
• مهدی معمری ⁴

¹ دانشگاه آزاد اسلامی، واحد کرج، باشگاه پژوهشگران جوان و نخبگان، کرج، ایران

² : استاد دانشکدة منابع طبیعی دانشگاه تهران

³ دانشیار دانشکدة منابع طبیعی دانشگاه تهران

⁴ : دانشگاه آزاد اسلامی، واحد کرج، باشگاه پژوهشگران جوان و نخبگان، کرج، ایران

چکیده

در این مطالعه، به منظور بررسی تغییرات خاک‌شناختی منطقة حسین‏آباد حپشلو در اثر کشت آتریپلکس، پس از بازدید عرصة مورد مطالعه، دو سایت نزدیک به هم هر یک به مساحت یک هکتار انتخاب شد، که در یک سایت بوته‏کاری با گونة آتریپلکس کانسنس انجام شده بود، و سایت مجاور، که شاهد درنظر گرفته شد، فاقد بوته بود. با روش تصادفی- سیستماتیک و با استقرار 3 ترانسکت‏ به طول 100 متر در هر سایت نمونه‏برداری انجام شد. در سایت بوته‏کاری‌شده ترانسکت‌ها بر روی ردیف‌های کشت‌شده و عمود بر فاروها، و در سایت شاهد موازی یکدیگر و عمود بر خطوط تراز قرار گرفتند. در ابتدا، وسط، و انتهای هر ترانسکت پروفیل خاک حفر شد و در هر پروفیل مقدار کافی نمونة خاک از دو عمق ۰ ـ ۳۰ سانتی‌متر (خاک سطحی) و بیش از 30 سانتی‌متر (عمق ریشه‏دوانی بوته) برداشت شد. سپس، خصوصیات خاک‌ از قبیل بافت، اسیدیته، هدایت الکتریکی، آهک، سدیم قابل تبادل، مادة آلی‌، و عناصر سدیم، پتاسیم، کلسیم، منیزیم، و نیتروژن اندازه‏گیری شد. نتایج این مطالعه نشان می‏دهد که مقدار pH و منیزیم کاهش معنی‏داری در سایت بوته‏کاری‌شده نسبت به سایت شاهد داشت. همچنین، سدیم، منیزیم، آهک، و کلسیم افزایش معنی‏داری در منطقة بوته‏کاری نسبت به منطقة شاهد داشت. به طور کلی، نتایج نشان می‏دهد که تأثیر کشت این گونه بر روی خاک منطقة مورد مطالعه پس از گذشت هفت سال منفی بوده و باعث افزایش املاح در خاک شده است، که

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عنوان مقاله [English]

Investigation of Atriplex induced soil chemical changes (Case study: Hossein Abad Hapeshloo)

نویسندگان [English]

• Masoomeh Abbasi Khalaki ¹
• Mohammad Jafary ²
• Ali Tavili ³
• mehdi moameri ⁴

¹

²

³

⁴

چکیده [English]

To find the effect of Atriplex canescens on soil chemical properties, two adjacent areas, each with and area of 1 ha, were selected in Hossein Abad Hapeshloo Shahryar. In one area it was planted Atriplex canescens in 2003 while the later one without Atriplex canescens was considered as control area. To sample soil, random- systematic method was used along 3 transects with a length of 100 m. In planting site transects were established perpendicularly on furrows were while in control site they were established parallel. Along each transect, 3 profiles were dug in initiate, medium and end points of each transect under shrubs and samples were taken from two depths (0- 30 cm and > 30 cm). Then, soil characteristics including texture, pH, Ec, Lime (CaCo3), ESP, organic mater (OM) and elements of Na, K, Ca, Mg and N were measured in laboratory. The results of this study showed that pH and Mg were significantly reduced in planting site compared of control. In addition, Na, Mg, Lime and Ca were significantly increased in planting site in comparison to control.

کلیدواژه‌ها [English]

• Soil characteristics
• planting
• Atriplex canescens
• planting effect