ﺑﺮرﺳﯽ ﺗﺎﺛﯿﺮ ﺳﯿﻠﯿﺲ ﺑﺮ ﻋﻤﻠﮑﺮد و اﺟﺰاء ﻋﻤﻠﮑﺮد ارﻗﺎم ذرت ﻋﻠﻮﻓﻪ اي

investigation of effects of silice on yield and yield components of silage corn cultivars

ﺑﻪ ﻣﻨﻈﻮر ﺗﻌﯿﯿﻦ اﺛﺮﺳﯿﻠﯿﺲ ﺑﺮﻋﻤﻠﮑﺮد ﺳﯿﻠﻮﺋﯽ ارﻗﺎم ذرت، اﯾﻦ ﻃﺮح آزﻣﺎﯾﺸﯽ در ﻗﺎﻟﺐ اﺳﭙﻠﯿﺖ ﭘﻼت در ﭼﻬﺎر ﺗﮑﺮار اﺟﺮاء ﺷﺪ. ﻓﺎﮐﺘﻮر اﺻﻠﯽ رﻗﻢ )ﺳﯿﻨﮕﻞ ﮐﺮاس 704 و ﻣﺎﮐﺴﯿﻤﺎ( و ﻓﺎﮐﺘﻮر ﻓﺮﻋﯽ ﻣﻘﺎدﯾﺮ ﻣﺨﺘﻠﻒ ﺳﯿﻠﯿﺲ )2،1،0و3 ﻟﯿﺘﺮدر ﻫﮑﺘﺎر( اﺳﺖ ﺳﯿﻠﯿﺲ در ﺳﻪ ﻣﺮﺣﻠﻪ رﺷﺪي ، 5 ﺑﺮﮔﻪ ﺷﺪن ﮔﯿﺎه ،9 ﺑﺮﮔﻪ ﺷﺪن ﮔﯿﺎه و12ﺑﺮﮔﻪ ﺷﺪن ﮔﯿﺎه ﺑﻪ ﺗﯿﻤﺎرﻫﺎ داده ﺷﺪ. رﻗﻢ ﻫﺎ در ﭘﻼﺗﻬﺎي اﺻﻠﯽ و ﻣﻘﺎدﯾﺮ ﻣﺨﺘﻠﻒ ﺳﯿﻠﯿﺲ در ﭘﻼﺗﻬﺎي ﻓﺮﻋﯽ ﻗﺮار ﮔﺮﻓﺘﻨﺪ. ﮐﺎﺷﺖ آزﻣﺎﯾﺶ ﺑﻌﺪ از ﺑﺮداﺷﺖ ﮔﻨﺪم در ﺗﯿﺮﻣﺎه ﺳﺎل1394 اﻧﺠﺎم ﭘﺬﯾﺮﻓﺖ. آزﻣﺎﯾﺶ در ﻣﻬﺪﺷﺖ )ﺳﺎري( اﻧﺠﺎم ﺷﺪ. ﻧﺘﺎﯾﺞ ﻣﻘﺎﯾﺴﻪ ﻣﯿﺎﻧﮕﯿﻦ ﻫﺎ ﻧﺸﺎن داد ﮐﻪ ﺗﯿﻤﺎر دوﻟﯿﺘﺮ در ﻫﮑﺘﺎرﺳﯿﻠﯿﺲ ﺑﺎ 42/75 ﺗﻦ در ﻫﮑﺘﺎر داراي ﺑﯿﺸﺘﺮﯾﻦ ﻋﻤﻠﮑﺮد ﻋﻠﻮﻓﻪ ﺗﺮ ﺑﻮده اﺳﺖ. ﺗﯿﻤﺎر ﺑﺪون ﻣﺼﺮف ﺳﯿﻠﯿﺲ ﮐﻤﺘﺮﯾﻦ ﻣﻘﺪار ﻋﻠﻮﻓﻪ ﺗﺮ ﺑﻪ ﻣﻘﺪار 39/96 ﺗﻦ در ﻫﮑﺘﺎررا ﺑﻪ دﺳﺖ داد. رﻗﻢ ﺳﯿﻨﮕﻞ ﮐﺮاس 704 )42/40 ﺗﻦ در ﻫﮑﺘﺎر( ﺑﯿﺸﺘﺮﯾﻦ و رﻗﻢ ﻣﺎﮐﺴﯿﻤﺎ )40/00 ﺗﻦ در ﻫﮑ(ﺘﺎر ﮐﻤﺘﺮﯾﻦ ﻋﻤﻠﮑﺮد ﻋﻠﻮﻓﻪ ﺗﺮ را داﺷﺖ. ﺑﯿﺸﺘﺮﯾﻦ وزن ﺧﺸﮏ ﻋﻠﻮﻓﻪ از ﺳﯿﻨﮕﻞ ﮐﺮاس 704 ﺑﻪ ﻣﻘﺪار 11/97ﺗﻦ در ﻫﮑﺘﺎرﺑﻪ دﺳﺖ آﻣﺪ. ﺗﯿﻤﺎر ﻫﺎي دو و ﺳﻪ ﻟﯿﺘﺮ در ﻫﮑﺘﺎر ﺑﻪ ﺗﺮﺗﯿﺐ ﺑﺎ 12/19و12/15ﺗﻦ در ﻫﮑﺘﺎر ﺑﯿﺸﺘﺮﯾﻦ وزن ﺧﺸﮏ ﻋﻠﻮﻓﻪ را داﺷﺘﻪ وﻟﯽ ﺗﻔﺎوت ﻣﻌﻨﯽ داري ﺑﺎ ﻫﻢ ﻧﺪاﺷﺘﻨﺪ. ﺗﯿﻤﺎر ﺑﺪون ﺳﯿﻠﯿﺲ ﺑﺎ 10/43ﺗﻦ در ﻫﮑﺘﺎر داراي ﮐﻤﺘﺮﯾﻦ ﻣﻘﺪار ﻋﻠﻮﻓﻪ ﺧﺸﮏ ﺑﻮد. ﺑﻨﺎ ﺑﻪ ﻧﺘﺎﯾﺞ ﺑﻪ دﺳﺖ آﻣﺪه ﺗﯿﻤﺎر دو ﻟﯿﺘﺮدر ﻫﮑﺘﺎرﺳﯿﻠﯿﺲ و رﻗﻢ ذرت ﺳﯿﻨﮕﻞ ﮐﺮاس 704 ﺟﻬﺖ ﻣﺼﺮف ﻋﻠﻮﻓﻪ ﺗﻮﺻﯿﻪ ﻣﯽ ﮔﺮدد.

To determine the effect of silice on silage yield of corn (Zea mays L.Cv.Sc704 and Maxima) an experiment was done as split plot design with four replications in Mahdasht(Sari) in 2015. Cultivars was chosen as main plots including: Sc704 and Maxima. Four levels of silice (0, 1,2 and 3 lit/ ha) as sub plots were laid out.Silice was applied in three stage(5,9and 12th leaves of plant). The results indicated that amount of 2 lit/ ha silice was caused the most forage yield (42.75t/ha) . The lowest forage yield was obtained from control (0 lit/ ha of silice) with 39.96 t/ha.The most forage yield (42.4 t/ha) obtained from Sc704 that was better than Maxima (40t/ha). The most dry forage yield (11.97 t/ha) obtained from Sc704 .The highest dry silage yield were obtained from 2 lit/ ha of silice with12.19 t/ha that had not significant difference with 3 lit/ ha of silice with 12.15 t/ha.The lowest dry forage yield was in related to control (0 lit/ ha of silice) with 10.43 t/ha. According to results, proposed usage of Sc704 and 2 lit/ ha of silice.