北方地区春季往往干旱，水田节水灌溉是一重要课题。黑龙江省绥棱灌溉试验站经十几年来试验研究提出了一个水田短期节水新方法──设障减渗法。我们知道，水田田间需水量是株问蒸发量、叶面蒸腾量和深层土壤渗漏量三者之和，一般讲这三者各约占田间需求量的三分之一。因此，若 Spring is often aridity in northern China, paddy field water-saving irrigation is an important issue. After more than ten years of experiment and study in Suiling Irrigation Experimental Station in Heilongjiang Province, a new short-term water saving method for paddy field has been put forward: We know that paddy field water demand is the sum of evapotranspiration, foliar transpiration and deep soil leakage. Generally, each of these three accounts for about one-third of the demand in the field. So, if