本文应用Miami模型估算了黄土高原各地区的植物气候产量,由于水分不足,光能利用率只有0.1—0.2％,每年实际谷物气候产量371.9—111.0kg/a,木材为0.89—0.26m~3/a,都是从东南逐渐向西北递减。欲达到最大气候产量,需补充灌溉41％的水分,相当于326.1mm,可增产60—70％。计算结果与生产实际基本相符合。 Based on the Miami model, this paper estimated the plant climate production in all regions of the Loess Plateau. Due to the shortage of water, the utilization rate of light energy was only 0.1-0.2%. The annual grain yield was 371.9-111.0kg / a and that of wood was 0.89-0.26m 3 / a, are gradually decreasing from southeast to northwest. In order to reach the maximum climatic yield, it is necessary to replenish 41% of the water for irrigation, equivalent to 326.1mm, which can increase the yield by 60-70%. The calculation results are basically in line with the actual production.