تابع تولید رقم های گلستان و ارمغان در کشت تاخیری کلزا-پنبه

نوع مقاله : مقاله پژوهشی

نویسنده

موسسه تحقیقات پنبه کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، گرگان، ایران

چکیده

با گسترش کشت کلزا در سال‌های اخیر، موسسه تحقیقات پنبه کشور مطالعه ارقام مناسب پنبه برای کشت بعد از کلزا را در دستور کار خود قرار داده است. در این راستا تعیین ارقام زودرس با عملکرد بالا و کیفیت الیاف مناسب در اولویت قرار دارد. با توجه به اینکه پنبه به عنوان یک گیاه نورپسند و گرمادوست، فرصت کمی جهت تکمیل دوره رشد خود و تولید محصول در کشت‌های تاخیری دارد. بنابراین سوای انتخاب رقم زودرس، کلید اصلی موفقیت زراعت پنبه در کشت‌های تاخیری، مدیریت صحیح مزرعه و به ویژه مدیریت آبیاری آن است. ایجاد تعادل بین رشد رویشی و رشد زایشی با مدیریت آبیاری در کشت کلزا-پنبه بسیار ضروری است. با توجه به اینکه تابع تولید یا رابطه آب-عملکرد شاخص برای بهینه سازی مصرف آب در زراعت پنبه می باشد، بدیهی است تابع تولید ارقام دیرکاشت با کاشت معمول پنبه، تفاوت خواهد داشت. برای تعیین تابع تولید رقم‌های ارمغان و گلستان در کشت دوم پنبه، آزمایش‌ها در ایستگاه تحقیقات‌هاشم آباد گرگان در زمینی به ابعاد 50 ×40 متر با روش آبیاری بارانی خطی انجام شد. قطعه مورد نظر به شبکه 3×3 متر تقسیم شده و مقدار آب، با استقرار سه پایه و قوطی جمع آوری آب در وسط هر قطعه اندازه گیری شد. در این پژوهش رابطه آب – عملکرد رقم ارمغان و گلستان در کشت دوم به‌ترتیب به صورت  و  پیشنهاد می‌شود. بر اساس تابع تولید بدست آمده حداکثر عملکرد ارقام ارمغان و گلستان به‌ترتیب با مصرف 1739 و 1832 مترمکعب آب در هکتار به مقدار 3909 و 3973 کیلوگرم در هکتار وش بدست می‌آید.

کلیدواژه‌ها


عنوان مقاله [English]

Yield function of Golestan and Armaghan cotton varieties (Gossypiumhirsutum) at Canola-Cotton Cultivation system

نویسنده [English]

  • Borhan Sohrabi
Cotton research Institute of Iran, Agricultural Research, Education and Extension Organization (AREEO), Gorgan, Iran
چکیده [English]

In recent years, with the increase in cultivation of canola, Cotton Research Institute of Iran began studies to identify appropriate varieties that suitable for planting after canola harvesting. In these studies, the earliness varieties with high yield and good fiber quality is emphasized.Because the Cotton plant needs a lot of heat and light to complement the growth period. So in delayed cotton planting, appropriate growing season is limited. Therefore, in addition to selecting appropriate cultivar, success key in the cultivation of late, are good farm management, especially management of irrigation. Because in delayed cotton cultivation create the balance between vegetative and reproductive growth with irrigation management is very important. Production function or water-yield relationship is appropriate index to optimize water use in cotton cultivation. Cotton production function is different at late planting comparison with normal planting date. For this reason, this experiment was conducted to determine the production function of cotton in the canola-cotton system. After seedling emergence, land was divided into 3*3 m. In middle of each section was placed a tripod and cach can for collecting Irrigation water. The relationship between water-yield of Armaghan and Golestan varieties were determined in the form of and equation respectively. Based on the production function, the highest yield of Armaghan and Golestan varieties as well as 3909 and 3973 kg/ha can be obtained with 1739 and 1832 m3/ha water consumption.

کلیدواژه‌ها [English]

  • Sprinkler irrigation
  • Deficit irrigation
  • Earliness variety
  • Water stress
  • Water-yield relationship
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