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本文用二个“彭门修正式”分别计算了华北几种主要农作物的需水系数kc,并对影响 kc 的因子进行了初步探讨,其中主要讨论了计算可能蒸散量(PET)的公式和生产水平对 kc 的影响。
In this paper, we calculated the water demand coefficient kc of several main crops in North China by using two “Pengmen revised formula” and discussed the factors affecting kc. The formula for calculating the possible evapotranspiration (PET) was mainly discussed And the impact of production level on kc.