اثر کم‏آبیاری و سطوح زئولیت بر فنولوژی، عملکرد روغن و کارآیی مصرف آب شاهدانه

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه زراعت، دانشکده کشاورزی، دانشگاه شهرکرد

2 عضو هیئت علمی دانشگاه شهرکرد

چکیده

به منظور بررسی اثر کم‏آبیاری و کاربرد زئولیت بر راندمان مصرف آب، عملکرد روغن و فنولوژی شاهدانه، آزمایشی به صورت کرت‏های خرد شده در قالب طرح بلوک‏های کامل تصادفی با سه تکرار در دانشگاه شهرکرد انجام شد. تیمارها شامل آبیاری به عنوان عامل اصلی در چهار سطح (تامین 40، 60، 80 و 100 درصد نیاز آبی گیاه) و کاربرد زئولیت به عنوان عامل فرعی در سه سطح (عدم کاربرد، کاربرد 5 و 10 تن در هکتار) بود. نتایج نشان داد طول دوره زایشی تحت تاثیر آبیاری و زئولیت و برهمکنش‏ آن‏ها قرار گرفت و با کاهش تامین آب آبیاری، طول دوره رشد کاهش یافت؛ که سهم مراحل زایشی بیش از مراحل رویشی بود. با افزایش شدت کم‏آبیاری عملکرد روغن، به عنوان تابعی از عملکرد دانه و درصد روغن، کاهش معنی‏داری داشت، اما کاربرد زئولیت تا حدودی سبب جلوگیری از کاهش عملکرد روغن گردید. زئولیت مصرف آب در ازای هر واحد عملکرد تولیدی را در تیمار تنش خفیف و متوسط به ترتیب 9/19 و 5/17 درصد نسبت به شرایط بدون تنش بهبود داد. کاربرد 10 تن زئولیت در هکتار به همراه تامین 60 و به ویژه 80 درصد نیاز آبی، سبب کاهش خسارت تنش خشکی به گیاه شاهدانه می‏شود.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Effect of deficit irrigation and zeolite levels on phenology, oil yield and water use efficiency of hemp

نویسندگان [English]

  • Mahmoud Bahador 1
  • MahmoudReza Tadayon 2
1 Agronomy department, Agriculture faculty, Shahrekord university
چکیده [English]

To study the effect of deficit irrigation and zeolite application on water use efficiency, oil yield and phenology of hemp, a split plot experiment was conducted in a randomized complete block design with three replications in Shahrekord University. Treatments included irrigation at four levels (supplying 40, 60, 80 and 100% water requirement of crop) as the main plot and application of zeolite at three levels (no application, application of 5 and 10 tons of zeolite per hectare) as sub plot.
The results showed that the length of the reproductive period was affected by irrigation and zeolite treatments and their interactions. By decreasing irrigation water supply, the length of the growth period decreased, although the reproductive stages were more sensitive than the vegetative stages. With increasing defficit irrigation intensity, oil yield, as a function of grain yield and oil content, decreased significantly. But, zeolite application prevented the oil yields to be reduced to some extent. Zeolite improved the water consumption per unit of yield on low and medium levels of drought stress with 19.9% and 17.5% than control treatment. Application of 10 tons of zeolite per hectare, at 60 and 80 percent supplying of the crop water requirement, modified the adverse effects of drought stress to hemp.

کلیدواژه‌ها [English]

  • Water Productivity
  • reproductive phase
  • Drought stress
  • leaf water content
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