To explore and develop the production potential of broomcorn millet in the arid and semi-arid region of northern Shanxi Province, different planting density and row spacing treatment combinations of broomcorn millet were plotted out to study the effects on millet yield and quality. The results showed that the yield components of the A_2B_3 treatment were significantly higher than the those of other treatments. At mature stage the leaf area index value of the A_2B_3 treatment was lower than that in the headi...