نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی دکترا دانشگاه گنبد کاووس
2 دانشیار دانشکده تولیدات گیاهی. دانشگاه گنبد کاووس
3 . استادیار دانشکده تولیدات گیاهی. دانشگاه گنبد کاووس.
4 استادیار دانشکده تولیدات گیاهی. دانشگاه گنبد کاووس
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
In order to impact of nitrogen different rate on light interception and radiation use efficiency in winter cereals, an experiment was carried out in research field of Gonbad-e- Kavous University with four replications during 2013-2014. Treatment included Cereals: bread wheat Koohdasht, durum wheat Seimareh, six row barley Sahra, two row barley Khoram, hull less barley Line 17, triticale Canadian and oat Javaniloo and nitrogen fertilizer at two levels: zero and optimum (bread wheat 150 kg.ha-1, durum wheat 120 kg.ha-1, two row barley 120 kg.ha-1, six row barley 210 kg.ha-1, hull less barley 150 kg.ha-1, oat 90 kg.ha-1and triticale 240 kg.ha-1). Results indicated that Zero and optimum amount of nitrogen rate had no significant effect on extinction coefficient. K gained for triticale 0.670±0.03, bread wheat 0.860±0.03, for durum wheat 0.770±0.03, for six rowed barley 0.790±0.03, for two rowed barley 0.800±0.03, for hull less barley 0.740±0.05 and for oat 0.760±0.04. Radian use efficiency obtained from 2.02 to 2.78 grMJ1.m-2 in cereals. Radiation use efficiency gained for oat 2.17± 0.048, for durum wheat 2.02±0.07, for bread wheat 2.42±0.13, for two rowed barley 2.33± 0.09, for hull less barley 2.52±0.11, for six rowed barley 2.39±0.08 and for triticale 2.78± 0.14
کلیدواژه‌ها [English]
)