In one- and two- dimensional approximations,the penetration depth-concentration distribution for 200 keV vanadium ions implanted into peanuts is simulated using a Monte Carlo method.The calculation is in good agreement with experimental results.The depth-concentration distribution for nitrogen ions with low energy implanted into peanuts is calculated which can not be obtained with experiment.It provides a computational method for the depth-concentration distribution of ions with low energy implanted into seeds.