نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانش‌آموخته کارشناسی ارشد، گروه علوم باغبانی، دانشکده علوم زراعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران.

2 استادیار، گروه علوم باغبانی، دانشکده علوم زراعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران.

3 دانشیار، گروه علوم باغبانی، دانشکده علوم زراعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران.

10.22059/jci.2021.316258.2493

چکیده

تمشک سیاه از گیاهان معتدله است که امکان تولید محصول در گلخانه جهت تولید میوه خارج از فصل و حصول سود بیش‌تر نیز برای آن وجود دارد. این پژوهش به‌صورت فاکتوریل در قالب طرح کاملاً تصادفی با سه تکرار به‌صورت گلدانی، در بستر خاکی حاوی نسبت 1:1:1 خاک لومی، ماسه و ماده آلی، انجام شد. فاکتور اول رقم (زودرس، میان‌رس و دیررس) و فاکتور دوم برنامه تغذیه‌ای در شش سطح از عناصر NPK (N0P0K0 (شاهد)، N50P0K0، N50P0K25، N50P0K50، N50P25K50، N50P12.5K25 کیلوگرم در هکتار) بوده که به‌صورت کودآبیاری اعمال شد. نتایج نشان داد کاربرد عناصر غذایی موجب شده بیش‌ترین میزان عناصر نیتروژن و پتاسیم در رقم دیررس حاصل شود. بیش‌ترین طول شاخه و شاخص سبزینگی در تیمار N50P0K25 دیده شد؛ هم‌چنین پاسخ گیاه تمشک به نسبت‌های مختلف عناصر غذایی از نظر وزن تر شاخه در ارقام مختلف روند متفاوتی را نشان داد. با این‌حال بیش‌ترین وزن تر شاخساره در رقم دیررس و در دو تیمار N50P0K0 و N50P0K50 دیده شد. نتایج این پژوهش نشان داد که حداکثر عملکرد در ارقام زودرس و میان‌رس در تیمار N50P0K25 و در رقم دیررس در تیمار حاوی فسفر (N50P25K50) حاصل شد. هم‌چنین بیش‌ترین مقدار مواد جامد محلول در رقم زودرس و تیمار N50P0K25 به میزان 9/12 درجه بریکس به‌دست آمد. به‌طورکلی هرچند استفاده از عناصر غذایی NPK در اکثر صفات موردبررسی اثرگذار بود ولی نقش N و K در بهبود صفات رویشی و زایشی در تمشک به‌ویژه برای دو رقم زودرس و میان‌رس ملموس‌تر بود.

کلیدواژه‌ها

عنوان مقاله [English]

Evaluation of Different Ratios of Nitrogen, Phosphorus and Potassium on Some Vegetative and Reproductive Traits of Blackberry Cultivars in Greenhouse

نویسندگان [English]

  • Amirali Mohammadi 1
  • Mehdi Hadadinejad 2
  • hosein sadeghi 3
  • Kamran Ghasemi 2

1 Former M.Sc. Student, Department of Horticulture Sciences, Agronomy college, Sari Agriculture and Natural Resources University, Sari, Iran.

2 Assistant Professor, Horticultural Department, agronomy college, Sari Agriculture and Natural Resources University, Sari, Iran.

3 Associate professor, Horticultural Department, agronomy college, Sari Agriculture and Natural Resources University, Sari, Iran.

چکیده [English]

Blackberry is a temperate plant that can also be grown in the greenhouse for off-season fruit production as well as greater profit. This study is conducted as a factorial experiment in a completely randomized design with three replications as a pot inside the soil. The first factor has been the cultivar (early, intermediate, and late) and the second one is the nutrition program at six levels of NPK(N0P0K0(control), N0P0K0, N50P0K25, N50P0K50, N50P25K50, and N50P12.5K25 kg/ha), applied as fertigation. Results show that the use of nutrients release the highest amount of nitrogen and potassium in the late cultivar. The highest shoot length and chlorophyll index belong to N50P0K25 treatment. Furthermore, blackberry’s response to different ratios of nutrients for shoot fresh weight in different cultivars show a different trend; however, the highest shoot fresh weight occurs in late cultivar in both N50P0K0 and N50P0K50 treatments. Results also show that maximum yield in early and intermediate cultivars in N50P0K25 treatment and in treatment with phosphorus (N50P25K50) could be observed in the late cultivar. The highest amount of soluble solids in early cultivar and N50P0K25 treatment belong to 12.9 Brixo. In general, though the use of NPK nutrients is effective in most studied traits, the role of N and K in improving the vegetative and reproductive traits in blackberry has been especially tangible for the two early and intermediate cultivars.

کلیدواژه‌ها [English]

  • ِDruplet
  • primocane
  • early blackberry
  • Mineral nutrition
  • yield
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