前人的研究指出:水稻根系的生长和活力的维持对地上部的生育和产量的形成有着十分重大的意义。杂优稻具有根系发达、吸收力强的特性,能否采用土壤管理措施以充分发挥它的这种特性来达到高产的目的呢?这是一个有待探讨的问题。为此,我们设计了高垄培土、湿润灌溉的试验方案,从1977年开始进行了三年的大田对比试验,现将初步结果报道如下。 Previous studies have pointed out: the growth of rice roots and the maintenance of vitality of the aboveground fertility and yield formation is of great significance. Hybrid rice has developed root system, strong absorption characteristics, soil management measures to take full advantage of its features to achieve the purpose of high yield? This is a question to be explored. To this end, we have designed a test scheme for high ridge soil and wet irrigation. We have conducted a three-year field trial since 1977, and the preliminary results are reported below.