Objective: This study investigated the impact of furrow irrigation in wide-narrow row planting on maize yield, providing a scientific basis for high-yield maize cultivation. Method: The experiment was conducted at the Inner Mongolia Agricultural University farm, using silage maize cultivar Wenyu No. 3 as the research object. Three irrigation modes were set up: furrow irrigation mode（KG）, above ground drip irrigation mode（GD）, and flat drip irrigation mode（PD）. The effects of these three irrigation modes on maize root growth, photosynthetic capacity, and yield were studied by regulating soil temperature. Result: Compared to PD, KG increased maize root dry weight by 31.25%. During the jointing stage, the photosynthetic capacity of maize under KG was 9.59% and 12.87% higher than under GD and PD, respectively. KG achieved the highest yield, with increases of 11.07% and 27.42% over GD and PD, respectively. Conclusion: Under equal irrigation conditions, the furrow irrigation mode（KG） increases root dry weight by affecting soil moisture and temperature, indirectly enhancing leaf photosynthetic capacity and increasing single plant grain yield. Furrow irrigation is a sustainable planting strategy that can achieve increased maize yield.