اثر تاریخ کاشت بر مراحل رشد و عملکرد دانه و روغن سویا در منطقه اردبیل

نوع مقاله: پژوهشی

نویسندگان

1 دانشگاه آزاد اسلامی، واحد اردبیل، باشگاه پژوهشگران جوان، اردبیل، ایران.

2 دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، گروه زراعت، تهران، ایران.

3 دانشگاه آزاد اسلامی، واحد اردبیل، گروه زراعت و اصلاح نباتات، اردبیل، ایران.

4 دانشگاه آزاد اسلامی، واحد اردبیل، باشگاه پژوهشگران جوان، اردبیل، ایران

چکیده

      به منظور بررسی تاثیر تاریخ های مختلف کاشت بر مراحل رشد و عملکرد های دانه و روغن ارقام سویا، آزمایشی به صورت فاکتوریل در قالب طرح بلوک های کامل تصادفی با سه تکرار در مزرعه تحقیقاتی دانشگاه آزاد اسلامی واحد اردبیل در سال 1388 به مرحله اجرا درآمد. در این آزمایش عامل اول تاریخ کاشت، شامل چهار سطح ( 6، 15، 25 خرداد ماه و 5 تیر ماه) و عامل دوم شامل رقم ویلیامز و لاین L17 سویا بود. نتایج نشان داد که بین تاریخ های مختلف کاشت از نظر صفاتی چون تعداد روز از کاشت تا ظهور اولین گل، از کاشت تا ظهور اولین غلاف، از کاشت تا شروع دانه بندی، طول دوره رویش، ارتفاع بوته، عملکرد دانه، درصد روغن و عملکرد روغن اختلاف معنی‎داری وجود داشت. اثر متقابل تاریخ کاشت و رقم برای صفات مورد ارزیابی معنی‎دار نبود. تاریخ های کاشت 6 و 15 خرداد از نظر صفات ارتفاع بوته، روز از کاشت تا ظهور اولین گل، روز از کاشت تا ظهور اولین غلاف و درصد روغن دانه بیشترین مقادیر را داشته در یک گروه قرار گرفتند. از نظر طول دوره رویش، تعداد روز از کاشت تا شروع دانه بندی، عملکرد دانه و عملکرد روغن، تاریخ کاشت 6 خرداد بالاترین مقدار را نشان داد. نتایج نشان دادکه در منطقه اردبیل با تاخیر در کاشت سویا به دلیل برخورد با شرایط نا مناسب، گیاه به پتانسیل بالقوه تولید خود نمی‎رسد و عملکرد محصول کاهش می‎یابد. از این رو تاریخ کاشت 6 خرداد ماه برای کاشت سویا در اقلیم سردسیر اردبیل مناسب تر از سایر تاریخ‎های کاشت بود.

کلیدواژه‌ها


عنوان مقاله [English]

Effects of planting time on the growth stages and oil and seed yield of soybean in Ardabil region, Iran.

نویسندگان [English]

  • Seyed Sajjad Moosavi 1
  • Seyed Mohammad Javad Mirhadi 2
  • Ali Akbar Imani 3
  • Ali Mohammadpour Khaneghah 4
1 Member of Young Researchers' Club, Ardabil Branch, Islamic Azad University, Ardabil, Iran.
2 Department of Agronomy, Science and Research Branch, Islamic Azad University, Tehran, Iran.
3 Department of Agronomy and Breeding, Ardabil Branch, Islamic Azad University, Ardabil, Iran.
4 Member of Young Researchers' Club, Ardabil Branch, Islamic Azad University, Ardabil, Iran.
چکیده [English]

   In order to study the effects of different planting dates on growth stages and oil and seed yieldsof soybean varieties, an experiment was conducted as a factorial based on a randomized complete block design with three replications at the Agricultural Research Station of Islamic Azad University, Ardabil Branch in 2009. The first factor was planting date at four levels (27 May, 5, 15 and 26 June) and the second factor was Williams variety and L17 line of soybean. The results showed that there were significant differences between planting dates for traits like plant height, days from sowing to first flowering, days from sowing to first pod initiation, oil percentage, seed yield, oil  yield, growth period and days from sowing to seed formation. Interaction effects of planting date and varieties were not significant for all evaluated characteristics. Planting dates of 27 May and 5 June were not statistically different and were the same for plant height, days from sowing to first flowering, days from sowing to first poding and oil percantage. Planting date of 27 May had the highest values for seed yield, oil  yield, growth period and days from sowing to seed formation. Results of this research showed that  becaues of short growth period in Ardabil region, soybean could not reach to its potential yield and it seems that the planting date of 27 May is more suitable than other planting dates in Ardabil cold climate.

کلیدواژه‌ها [English]

  • Planting date
  • soybean
  • growth stages
  • Grain yield
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