早稻适宜种植在低洼旱地和多湿地区,它是我国北方特别是华北地区连年干旱、水源不足维持和扩大稻作面积的有效方法。目前,旱稻的单位面积产量还很低,本工作的目的在于通过在旱播条件下对水稻、旱稻生长特性的比较,来分析旱稻抗旱的可能机制,为农业生产上扩大种植旱稻、选育高产抗旱旱稻品种提供可能的依据。 Early rice is suitable for planting in low-lying dry land and wetland. It is an effective method to maintain and expand the area of ​​rice in successive northern part of China, especially in North China. At present, the yield per unit area of ​​Upland rice is still very low. The purpose of this work is to analyze the possible mechanism of Upland rice drought resistance by comparing the growth characteristics of Upland rice and Upland rice in the condition of dry sowing, to expand Upland rice in agricultural production, Drought-resistant upland rice varieties provide a possible basis.