ﺑﺮرﺳﯽ ﻣﯿﺰان ﺑﻬﯿﻨﻪ ﺑﺬر ارﻗﺎم ﮔﻨﺪم در ﺳﯿﺴﺘﻢ ﻫﺎي ﻣﺨﺘﻠﻒ ﺧﺎك ورزي در ﻣﻨﻄﻘﻪ ﮔﺮم اﺳﺘﺎن ﮐﺮﻣﺎﻧﺸﺎه

Study on optimum seeding rate of wheat varieties under different tillage systems in warm area of Kermanshah province

ﺟﻬﺖ ﺗﻌﯿﯿﻦ ﺑﻬﺘﺮﯾﻦ ﻣﯿﺰان ﺑﺬر در ﺳﯿﺴﺘﻢ ﻫﺎي ﻣﺨﺘﻠﻒ ﺧﺎك ورزي در ﺷﺮاﯾﻂ دﯾﻢ اﯾﻦ ﺗﺤﻘﯿﻖ در ﻣﻨﻄﻘﻪ ﮔﺮم اﺳﺘﺎن ﮐﺮﻣﺎﻧﺸﺎه در ﺷﺮاﯾﻂ زارﻋﯿﻦ اﺟﺮا ﺷﺪ. در اﯾﻦ آزﻣﺎﯾﺶ ﺗﯿﻤﺎرﻫﺎي ﻣﺨﺘﻠﻒ ﻣﯿﺰان ﺑﺬر، رﻗﻢ و ﺳﯿﺴﺘﻢ ﺧﺎك ورزي در ﮐﺮت ﻫﺎي ﺑﺰرگ ﺑﻪ ﺷﺮح ذﯾﻞ ﺑﺮرﺳﯽ ﺷﺪﻧﺪ: اﻟﻒ- ﺣﺪاﻗﻞ ﺧﺎﮐﻮرزي ﺑﺎ رﻗﻢ ﮐﺮﯾﻢ ﮔﻨﺪم در ﭼﻬﺎر ﻣﯿﺰان ﺑﺬر ﺷﺎﻣﻞ 120، 140، 160 و 180 ﮐﯿﻠﻮﮔﺮم در ﻫﮑﺘﺎر، ب- ﺑﯽ ﺧﺎك ورزي ﺑﺎ رﻗﻢ آﻓﺘﺎب در ﭼﻬﺎر ﻣﯿﺰان ﺑﺬر ﺷﺎﻣﻞ120، 140، 160 و 180 ﮐﯿﻠﻮﮔﺮم در ﻫﮑﺘﺎر، ج- ﺧﺎك ورزي ﻣﺮﺳﻮم ﺑﺎ رﻗﻢ ﮐﻮﻫﺪﺷﺖ در ﭼﻬﺎر ﻣﯿﺰان ﺑﺬر ﺷﺎﻣﻞ 140، 160 ، 180 و 200 ﮐﯿﻠﻮﮔﺮم در ﻫﮑﺘﺎر. ﻃﺒﻖ ﻧﺘﺎﯾﺞ ﺑﺪﺳﺖ آﻣﺪه ﺑﻄﻮر ﮐﻠﯽ ﺑﺮاي ﮔﻨﺪم ﻣﯿﺰان ﺑﺬر ﮐﻢ 120 ﺗﺎ 140 ﮐﯿﻠﻮﮔﺮم در ﻫﮑﺘﺎر ﻗﺎﺑﻞ ﺗﻮﺻﯿﻪ اﺳﺖ و ارﻗﺎم آﻓﺘﺎب و ﮐﺮﯾﻢ در ﺷﺮاﯾﻂ ﺑﯽ ﺧﺎك ورزي و ﮐﻢ ﺧﺎك ورزي ﻋﻤﻠﮑﺮد ﺑﯿﺸﺘﺮي از رﻗﻢ ﮐﻮﻫﺪﺷﺖ در ﮐﺸﺖ ﻣﺮﺳﻮم داﺷﺘﻨﺪ.

This research was conducted to determination of wheat proper seeding rate in different tillage systems in warm area of Kermanshah province in 2017-18 cropping season. Different treatments of seed rate, variety and tillage system in big plots carried out for as follow: (a) MT with Karim variety at four seed rates including 120,140, 160 and 180 kgha-1, (b) No tillage with Aftab variety at four seed rates including 120,140, 160 and 180 kgha-1, and (c) Conventional tillage with Kohdasht variety at four seed rates including 140, 160, 180 and 200 kgha-1. According to the results low seed rates 120-140 kgha-1 can be suggested for wheat and new varieties Aftab and Karim in No tillage and minimum tillage had higher yield than Koohdasht in conventional tillage.