Abstract The development of nitrogen fertilizer green and efficient application technology by exploring the mechanism of efficient sorghum N use is important for sustainable development of sorghum industry as well as barren marginal land development and utilization. This study was conducted in 2018. 2019. and 2020 at Shenyang. https://www.allfixelectricales.shop/product-category/single-inlet-4-way-water-valve/