اثر تیمارهای مختلف کودی در افزایش توان تولید چوب صنوبر

نوع مقاله : علمی- پژوهشی

نویسندگان

1 مربی پژوهشی، مرکز تحقیقات گیلان

2 دانشیار پژوهشی، موسسه تحقیقات جنگلها و مراتع کشور

3 کارشناس ارشد پژوهش، مرکز تحقیقات گیلان

4 کارشناس ارشد پژوهش، موسسه تحقیقات جنگلها و مراتع کشور

5 استادیار پژوهش، مرکز تحقیقات گیلان

6 کارشناس کتابدار، مرکز تحقیقات برنج

چکیده

این پژوهش به‌منظور بررسی اثر تیمارهای مختلف کودی بر کلنPopulus deltoides 69/55  در اراضی ایستگاه تحقیقاتی زراعی فخرآباد لشت‌نشاء در‌ سال‌های 1386 تا 1390 اجرا شد. قالب آماری طرح بلوک‌های کامل تصادفی در سه تکرار و پنج تیمار کود بود. تیمارهای کودی شامل  NPK94, NPK47, NP94, NP47(47 و 94 کیلوگرم ترکیب کودی در هکتار) و شاهد بود. پس از انتخاب و آماده‌سازی زمین، نهال‌های یک‌ساله براساس نقشه کاشت غرس شدند. در پایان هر فصل رویشی، کمیت‌های رشد شامل قطر برابرسینه و ارتفاع درختان اندازه‌گیری شد. داده‌های به‌دست‌آمده بااستفاده از نرم‌افزار SAS، مورد تجزیه‌وتحلیل آماری قرار گرفتند. نتایج این بررسی نشان داد که مقادیر کود مصرفی را می‌توان در سه گروه دسته‌بندی نمود. تیمار یک (94 کیلوگرم در هکتار NPK) با تولید 96/27 مترمکعب چوب در هکتار در سال در گروه نخست و تیمار چهار (47 کیلوگرم در هکتار NP) با تولید 62/23 مترمکعب در گروه آخر قرار گرفت.

کلیدواژه‌ها

عنوان مقاله [English]

Effects of different fertilizer treatments on Poplar wood production

نویسندگان [English]

  • Ebrahim Lashkarbolouki 1
  • Alireza Modirrahmati 2
  • Ehsan Kahneh 3
  • Reza Bagheri 4
  • Seyyed Abdollah Mosavi Qupar 5
  • Seyyedeh Zahra Seidjavadi 6
1 Senior Research Expert, Agricultural and Natural Resources Research Center of Guilan Province, Rasht, I.R. Iran
2 Associate Prof., Research Institute of Forests and Rangelands, Tehran, I.R. Iran.
3 Senior Research Expert, Agricultural and Natural Resources Research Center of Guilan Province, Rasht, I.R. Iran
4 Eexpert library, Research Institute of Rice, Guilan Province, Rasht, I.R. Iran
5 Assistant Prof., Agricultural and Natural Resources Research Center of Guilan Province, Rasht, I.R. Iran
6 Senior Research Expert, Research Institute of Forests and Rangelands, Tehran, I.R. Iran.
چکیده [English]

To study the effect of different fertilizer treatments on Populus deltoides clone 69/55, a 4-year study during 2007-2011 was conducted within two-ha site in the Fakhrabad agricultural research station in Lashte-Nesha in Guilan province. Following the site preparation, the previously-bred seedlings were planted within a randomized complete block design with three replications and five fertilization treatments. Treatments included NPK94, NPK47, NP94, NP47 as well as a control treatment. At the end of each growing season, factors including the diameter at breast height (dbh) and height growth of trees were measured. At the end of the 4-year period, the average rates of the measured parameters were analyzed. Comparison of total average growth, average annual growth and current growth was showed three distinct groups based on the amount of applied fertilizer. The first group was the treatment 1 (94 kg ha‾ ¹ NPK) produced 27.96 m³ ha‾ ¹ year‾ ¹, whereas the treatment 4 (47kg ha‾ ¹ NP) was grouped as the last one with its produced 23/62 m³ ha‾ ¹ year‾ ¹.

کلیدواژه‌ها [English]

  • Nutrition
  • production in ha
  • Poplar
  • Phosphorus
  • Fertilization
  • nitrogen

مراجع

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