واﻛﻨﺶ ﻋﻤﻠﻜﺮد و اﺟﺰای ﻋﻤﻠﻜﺮد ﺳﻪ رﻗﻢ ﺑﺮﻧﺞ (.Oryza sativa L) ﺑﻪ ﺳﻄﻮح ﻣﺨﺘﻠﻒ ﻧﻴﺘﺮوژن در دو ﻧﻈﺎم ﻛﺸﺖ ﻏﺮﻗﺎﺑﻲ و ﻫﻮازی ﺗﻐﻴﻴﺮ ﻳﺎﻓﺘﻪ
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عنوان دوره: سیزدهمین کنگره زراعت و اصلاح نباتات ایران
نویسندگان
1داﻧﺸﺠﻮی دﻛﺘﺮی داﻧﺸﮕﺎه ﻋﻠﻮم ﻛﺸﺎورزی و ﻣﻨﺎﺑﻊ ﻃﺒﻴﻌﻲ ﮔﺮﮔﺎن،
2اﺳﺘﺎدﻳﺎر داﻧﺸﮕﺎه ﻋﻠﻮم ﻛﺸﺎورزی و ﻣﻨﺎﺑﻊ ﻃﺒﻴﻌﻲ ﮔﺮﮔﺎن
3داﻧﺸﻴﺎر ﮔﺮوه زراﻋﺖ، ﭘﮋوﻫﺸﻜﺪه ژﻧﺘﻴﻚ و زﻳﺴﺖ ﻓﻨﺎوری ﻛﺸﺎورزی ﻃﺒﺮﺳﺘﺎن، داﻧﺸﮕﺎه ﻋﻠﻮم ﻛﺸﺎورزی و ﻣﻨﺎﺑﻊ ﻃﺒﻴﻌﻲ ساری
4ﻣﺤﻘﻖ ﻣﺮﻛﺰ ﺗﺮوﻳﺞ و ﺗﻮﺳﻌﻪ ﺗﻜﻨﻮﻟﻮژی هراز
چکیده
اﻳﻦ ﭘﮋوﻫﺶ ﺑﻪ ﻣﻨﻈﻮر ﺑﺮرﺳﻲ واﻛﻨﺶ ﻋﻤﻠﻜﺮد و اﺟﺰای ﻋﻤﻠﻜﺮد ﺳﻪ رﻗﻢ ﺑﺮﻧﺞ ﺑﻪ ﻣﻘﺎدﻳﺮ ﻣﺨﺘﻠﻒ ﻧﻴﺘﺮوژن در دو ﺳﺎﻣﺎﻧﻪ ﻛﺸﺖ ﻏﺮﻗﺎﺑﻲ و ﻫﻮازی ﺗﻐﻴﻴﺮﻳﺎﻓﺘﻪ ﺑﻪ ﺻﻮرت ﻛﺮتﻫﺎی ﺧﺮدﺷﺪه ﻓﺎﻛﺘﻮرﻳﻞ در ﻗﺎﻟﺐ ﻃﺮح ﭘﺎﻳﻪ ﺑﻠﻮکﻫﺎی ﻛﺎﻣﻞ ﺗﺼﺎدﻓﻲ ﺑﺎ ﺳﻪ ﺗﻜﺮار در ﻣﺰرﻋﻪ ﭘﮋوﻫﺸﻲ داﻧﺸﮕﺎه ﻋﻠﻮم ﻛﺸﺎورزی و ﻣﻨﺎﺑﻊ ﻃﺒﻴﻌﻲ ﺳﺎری در ﺳﺎل 1392 اﺟﺮا ﺷﺪ. ﻋﺎﻣﻞ اﺻﻠﻲ دو ﺳﺎﻣﺎﻧﻪ ﻛﺸﺖ )ﻏﺮﻗﺎﺑﻲ و ﻫﻮازی ﺗﻐﻴﻴﺮ ﻳﺎﻓﺘﻪ( و ﻋﺎﻣﻞﻫﺎی ﻓﺮﻋﻲ دو ﻋﺎﻣﻞ ﻛﻮد ﻧﻴﺘﺮوژن در ﭼﻬﺎر ﺳﻄﺢ )0، 40 ،80 و 120 ﻛﻴﻠﻮﮔﺮم ﻧﻴﺘﺮوژن ﺧﺎﻟﺺ در ﻫﻜﺘﺎر( و ارﻗﺎم ﺑﺮﻧﺞ )ﻃﺎرم،ﻛﺸﻮری و ﭘﮋوﻫﺶ( در ﻧﻈﺮ ﮔﺮﻓﺘﻪ ﺷﺪﻧﺪ. ﺑﺮ اﺳﺎس ﻧﺘﺎﻳﺞ، ﺑﺎ ﺗﻐﻴﻴﺮ ﺳﺎﻣﺎﻧﻪ ﻛﺎﺷﺖ از ﻏﺮﻗﺎﺑﻲ ﺑﻪ ﻫﻮازی ﺗﻐﻴﻴﺮﻳﺎﻓﺘﻪ ﺑﻴﺸﺘﺮﻳﻦ ﻛﺎﻫﺶ ارﺗﻔﺎع ﺑﻮﺗﻪ در رﻗﻢ ﭘﮋوﻫﺶ ﻣﺸﺎﻫﺪه ﺷﺪ. در ﺑﻴﻦ ﺻﻔﺎت ﻣﻮرد ﻣﻄﺎﻟﻌﻪ ﻧﻴﺰ ﺑﻴﺸﺘﺮﻳﻦ درﺻﺪ ﺗﻐﻴﻴﺮ در ﺻﻔﺖ ﺗﻌﺪاد داﻧﻪ ﭘﻮک ﺑﻪ دﺳﺖ آﻣﺪ. ﺑﻪ ﻃﻮری ﻛﻪ ﺣﺪود2/3 ﺑﺮاﺑﺮ در ﺳﺎﻣﺎﻧﻪ ﻫﻮازی ﺗﻐﻴﻴﺮ ﻳﺎﻓﺘﻪ ﻧﺴﺒﺖ ﺑﻪ ﻏﺮﻗﺎﺑﻲ ﻛﺎﻫﺶ ﻳﺎﻓﺖ. در ﺑﻴﻦ ارﻗﺎم، ﻛﺸﻮری ﺑﺎ دارا ﺑﻮدن ﻋﻤﻠﻜﺮدی ﺣﺪود 700 ﺗﺎ 730 ﻛﻴﻠﻮﮔﺮم در ﻣﺘﺮ ﻣﺮﺑﻊ ﺑﻴﺸﺘﺮﻳﻦ ﻋﻤﻠﻜﺮد ﺑﺮﺧﻮردار ﺑﻮد.
کلیدواژه ها
Title
Response of yield and yield components of three rice (Oryza sativa L.) cultivars to different nitrogen levels in lowland and aerobic cultivation systems
Authors
Abstract
This research was designed to evaluate the response of yield and yield components of three rice cultivars to different nitrogen rates in two rice system lowland and modified aerobic in 2013. The experiment arranged in factorial split block randomized complete block design with three replicates at Sari Agricultural Sciences and Natural Research University.
Main plots were two cultivation system lowland and modified aerobic and subplots were two factorial of nitrogen at four levels (0, 40, 80, and 120 kg N/ha) and rice cultivars (Tarom, Keshvari, and Pajhohesh). Results showed that the maximum reduction in plant height was recorded in Pajhohesh cultivar when cultivation system changed to modified aerobic. Among studied parameters, the highest change was observed in unfilled grain umber which decreased nearly 2/2 times in modified aerobic an compared to lowland conditions, Among rice cultivars. Keshvari showed the better respond to changing cultivation systems where recorded paddy yield as much as 700 – 730 kg/m2
Main plots were two cultivation system lowland and modified aerobic and subplots were two factorial of nitrogen at four levels (0, 40, 80, and 120 kg N/ha) and rice cultivars (Tarom, Keshvari, and Pajhohesh). Results showed that the maximum reduction in plant height was recorded in Pajhohesh cultivar when cultivation system changed to modified aerobic. Among studied parameters, the highest change was observed in unfilled grain umber which decreased nearly 2/2 times in modified aerobic an compared to lowland conditions, Among rice cultivars. Keshvari showed the better respond to changing cultivation systems where recorded paddy yield as much as 700 – 730 kg/m2
Keywords
lowland aerobic, paddy yield and filled grain