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为了克服确定作物需水量所遇到的困难，该文介绍一种简单、可靠、易掌握、实用的生物气候测定方法．该方法根据被测地的土壤、气候和作物参数，得到玉米在生长季节的光水热系数平均值为0．15mm/℃．该方法应用于南斯拉夫伏霍基拉省取得成功．由于光水热系数是由各地的特殊条件确定的，只要确定了该系数，该方法可在任何地方应用．灌溉时间和灌溉强度以及干旱的发生都可由该方法确定．玉米生长期的需水量为467mm．
In order to overcome the difficulties encountered in determining crop water requirements, this article presents a simple, reliable, easy-to-use and practical method of bio-climatic determination. According to the measured soil, climatic and crop parameters, the average light and water thermal coefficient of corn in the growing season is 0.15mm / ℃. The method was applied to Vojvodina in Yugoslavia for success. Since the optical water heat coefficient is determined by the special conditions of the area, the method can be used anywhere, provided that the coefficient is determined. Irrigation time and irrigation intensity, as well as the occurrence of drought can be determined by this method. The water requirement for growing corn is 467 mm.