Maize plant density affects the yield and growth of crops in maize/peanut intercropping. Researchers studied different maize plant densities in intercropping systems to see how it affects maize and peanut yields. They found that planting maize at 9 plants per square meter resulted in the highest maize yield gain without reducing peanut yield. Increasing plant density increased leaf growth rate but reduced dry matter allocation to ears. Maize planted at 9 plants per square meter had the greatest increase in dry matter accumulation and yield due to more dry matter going to the ears. This study shows that optimizing maize plant density at 9 plants per square meter can lead to higher maize yield in maize/peanut intercropping.