不同旱稻品种在南方红壤地区抗旱适应性评价*

 选择抗旱性不同的6个旱稻品种为材料，通过测定多项田间生产性能指标和抗旱生理指标，探索以多指标综合评价旱稻品种间的抗旱差异，并对其抗旱能力进行聚类分析及按抗旱力大小进行排序及分类。结果表明：(1)中旱3号和98-1抗旱力最强为第1类，绿旱1号为第2类，农选2号、中旱221和中旱215为第3类;(2)中旱3号生理生态适应性能表现最好，有必要作为选择目标进行多年多点试验，以期筛选出南方红壤地区既高产又耐旱的优良品种。

Study on the Drought Resistance and Adaptive Form of up rice on Red Soil in Southern China

The six upland rice cultivars with different drought resistance were selected as the material，the multinomial field and drought resistance physiology indices were determined to explore the drought resistance difference with the application of multi indices comprehensive evaluation，the order of drought resistance ability was arranged and classified with the clustering analysisThe results showed that the Zhonghan No.3 and 98 No.1 were regarded as the first kind with the strongest drought resistance ability，the Lvhan No.1 was regarded as the second kind，the Nongxuan No.2 and Zhonghan No.221 and Zhonghan No.215 were regarded as the third kindSecondly，the Zhonghan No.3 had the best physiological and ecological performance，and it should be selected as the material to experiment for many years and places to screen out excellent cultivars with high yield and strong drought resistance on red soil in southern China.