常用玉米杂交种的耐旱性研究

Studies on the Drought -tolerant Maize Hybrids Selection

耐旱玉米种质的筛选是提高产量、保护自然资源及实现农业可持续发展的重要手段。以河北省生产上常用的14个玉米杂交种为材料,对各种质的子粒产量、干物量、雌雄穗开花间隔、穗位高/株高、叶片衰老指数等指标进行了综合考察,得出各种质的综合耐旱指数,对进一步筛选耐旱玉米种质有一定指导意义。

Selection for drought -tolerance is a very important method in improving maize yield,protecting natu-ral resource and realizing sustainable agricultural development.Fourteen maize hybrids were used in this experiment and the characteristics such as grain yield,dry mass,the interval of anthesis and silking(ASI),ratio of ear height /plant height,and leaf senescence were studied.The comprehensive selection index was deduced through calculation.The study has a guide meaning for further study on drought -tolerant maize germplasm selection.