浅谈抗旱耐深播高产玉米新品种的利用与开发

Application and Development of New Maize Varieties with Drought Resistance,Deep-sowing Tolerance and Higher Yield

玉米杂交种在生产上的应用 ,大幅度提高了玉米产量 ,而地处干旱少雨的华北地区 ,则由于十年九春旱 ,现有品种难以保证玉米适时下种、高产稳产 ,直接制约着旱地玉米生产的发展。我所利用具有长根茎特性的印地安蓝粒玉米种质 ,培育出的抗旱耐深播高产玉米新品种 ,播深 2 0cm能正常出苗 ,对我国北方干旱、半干旱地区春播玉米生产的发展有着十分重要的意义。春旱不误适时探墒深播保全苗 ,伏旱深层根系有水“喝” ,从品种上解决了千百年来旱地玉米生产发展缓慢。

Application of the maize hybrid in production has dramatically increased maize yield In the Northern China.The current maize varieties can not ensure sowing on time,and getting higher and stable yield because it is nine spring droughts of ten years.Drought has been a main factor to restrict maize production.Recently,we used the long-rhizone characteristic of Indiana blue-grain maize gremplasm to develop some new maize hybrids with drought resistance,deep-sowing tolerance and high yield.It can be sown on time in drought spring season with better seedling stand,and is able to emerge while sown at 20 cm depth,which makes it to use deep soil moisture in summer drought.It is highly important to spring maize production at arid and semiarid areas in the Northern China,and solves a long-standing problem in maize production due to varieties with low and unstable yield.