ارزﯾﺎﺑﯽ ﮐﺎرﺑﺮد ﺑﯿﻮﭼﺎر و ﺗﻐﯿﯿﺮاﻟﮕﻮي ﮐﺸﺖ در ﺷﺮاﯾﻂ آﺑﯿﺎري ﻣﻮﺿﻌﯽ ﺑﺮ ﺻﻔﺎت ﺳﻮرﮔﻮم ﻋﻠﻮﻓﻪاﯾﯽ

Evaluation the effects of Biochar soil amendment and Cultivation pattern on physiological characteristics of forage Sorghum under alternate furrow irrigation.

ﮐﻤﺒﻮد آب ﯾﮑﯽ از ﻣﻬﻤﺘﺮﯾﻦ ﻋﻮاﻣﻞ ﻣﺤﺪود ﮐﻨﻨﺪه ﺗﻮﻟﯿﺪات ﻣﺤﺼﻮﻻت ﮐﺸﺎورزي در ﺟﻬﺎن اﺳﺖ. در اﯾﻦ راﺳﺘﺎ، ﻣﺪﯾﺮﯾﺖ ﻣﺼﺮف آب از اوﻟﻮﯾﺘﻬﺎي ﮐﺸﺎورزي ﻣﯽﺑﺎﺷﺪ. از اﯾﻦ رو آزﻣﺎﯾﺸﯽ ﺑﻪ ﺻﻮرت اﺳﭙﻠﯿﺖ اﺳﭙﻠﯿﺖ ﭘﻼت در ﻗﺎﻟﺐ ﻃﺮح ﺑﻠﻮك ﻫﺎي ﮐﺎﻣﻞ ﺗﺼﺎدﻓﯽ ﺑﺎ ﺳﻪ ﺗﮑﺮار در دو ﺳﺎل ﻣﺘﻮاﻟﯽ 1396و1397 در ﻣﺰرﻋﻪ داﻧﺸﮑﺪه ﮐﺸﺎورزي داﻧﺸﮕﺎه آزاد اﺳﻼﻣﯽ واﺣﺪ ﮐﺮج اﺟﺮا ﺷﺪ. آﺑﯿﺎري ﻣﻮﺿﻌﯽ ﺷﺎﻣﻞ آﺑﯿﺎري ﻣﺮﺳﻮم ﺗﻤﺎم ﺟﻮﯾﭽﻪ ﻫﺎ )ﺷﺎﻫﺪ(، ﺟﻮﯾﭽﻪ اي ﻣﻮﺿﻌﯽ ﯾﮏ در ﻣﯿﺎن ﺛﺎﺑﺖ و ﺟﻮﯾﭽﻪ اي ﻣﻮﺿﻌﯽ ﯾﮏ در ﻣﯿﺎن ﻣﺘﻐﯿﺮ در ﮐﺮت اﺻﻠﯽ، اﻟﮕﻮي ﮐﺸﺖ ﯾﮏ ردﯾﻔﻪ )ﺷﺎﻫﺪ( و دو ردﯾﻔﻪ ﺑﻪ ﻋﻨﻮان ﮐﺮت ﻓﺮﻋﯽ و ﺑﯿﻮﭼﺎر در ﺳﻪ ﺳﻄﺢ ﻋﺪم ﻣﺼﺮف)ﺷﺎﻫﺪ(، 6 و 12 ﺗﻦ در ﻫﮑﺘﺎر ﺑﻪ ﻋﻨﻮان ﮐﺮت ﻓﺮﻋﯽ ﻓﺮﻋﯽ در ﻧﻈﺮ ﮔﺮﻓﺘﻪ ﺷﺪ. ﺷﺎﺧﺺ ﺗﻌﺪاد ﺑﺮگ، ﻃﻮل ﺳﺎﻗﻪ و درﺻﺪ ﻗﻨﺪ ﻧﺎﻣﺤﻠﻮل در ﺳﻮرﮔﻮم ﻋﻠﻮﻓﻪ اي اﻧﺪازه ﮔﯿﺮي ﺷﺪﻧﺪ. ﻧﺘﺎﯾﺞ ﻧﺸﺎن داد ﮐﻪ ﮐﺎرﺑﺮد ﺑﯿﻮﭼﺎر و آﺑﯿﺎري ﻣﻮﺿﻌﯽ ﺷﺎﺧﺺ ﻫﺎي ﺗﻌﺪاد ﺑﺮگ ﻃﻮل ﺳﺎﻗﻪ و درﺻﺪ ﻗﻨﺪ ﻧﺎﻣﺤﻠﻮل را ﺗﺤﺖ ﺗﺎﺛﯿﺮ ﻗﺮار داد. ﺑﺮاﺳﺎس ﻧﺘﺎﯾﺞ ﺑﻪ دﺳﺖ آﻣﺎده ﻣﯽﺗﻮان اﻧﺘﻈﺎر داﺷﺖ ﮐﺎرﺑﺮد ﺑﯿﻮﭼﺎر ﻣﯽ ﺗﻮاﻧﺪ ﯾﮏ راﻫﺒﺮد ﻣﻮﻓﻖ ﺟﻬﺖ اﻓﺰاﯾﺶ ﻧﮕﻬﺪاري آب و ﻋﻨﺎﺻﺮ ﻏﺬاﯾﯽ در ﺧﺎك ﺑﺎﺷﺪ.

Water scarcity is one of the most important limiters of agricultural producers worldwide. Therefore, water management is one of the preferences in agriculture. The study was done in Agriculture, Islamic Azad University Research Farm in Karaj. This project was Randomly Complete Block Design under Split Split Plot with three replicates. Two field experimental designs were randomized complete block split-split plot with three replications during two consecutive cropping seasons with forage sorghum (Sorghum vulgare). Irrigation regiment planned in 3 levels; I0: Conventional full furrow, I1: Fixed furrow and I2: Alternate furrow. Cropping Patterns organized in 2 levels; P0: Single Row and P1: Twin Row. Soil amendment with Biochar arranged in 3 levels; B0: Control (non-application) B1: 6 metric tons of Biochar per hectare and B2: 12 metric tons of Biochar per hectare. Leaf number, stem length and percent insoluble sugar content in forage sorghum were measured. Results showed that biochar application and alternate Furrow irrigation affected leaf number, shoot length and insoluble sugar percentage. Biochar application resulted in an elevated level of water holding capacity of soil and marked a positive effect on soil fertility.