【摘要】 在控制性交替灌溉土壤水分动态和根系分布试验观测的基础上,建立了夏玉米控制性交替灌溉条件下土壤水分动态模拟模型,并根据实测资料确定了参数,对模型进行验证。通过与田间实测值进行比较结果表明,模型的均方差在0.029～0.038 cm3/cm3范围内,模拟值与实测值的平均相对误差在5.26%～7.85%范围。因此,认为模型能很好地模拟夏玉米控制性交替灌溉条件下的土壤水分动态。更多还原

【Abstract】 Based on the observed data of the water content and the root distribution of maize under controlled alternative irrigation,a two-dimensional soil water dynamic model is established.A comparison between simulated and measured soil water contents shows that mean square deviations are 0.029 cm3/cm3 to 0.038,the average relative errors are 5.26% to 7.85%.Therefore,the model is highly precise during different growth stages of maize.It can be used to predict soil water movement serving for controlled alternative irrigation.更多还原