不同气象条件对聊玉23号灌浆及脱水特性的影响

摘要

以玉米新品种聊玉23号为试材，研究2013、2014年不同气候条件对该品种灌浆速率、脱水速率等特性的影响。结果表明：生育期间“前涝后旱”天气会影响夏玉米植株生长，籽粒干物质积累缓慢，脱水速率降低；灌浆中后期阴雨寡照天气易引发茎腐病，造成植株倒伏，果穗下垂，籽粒干瘪，品质和产量下降。%Taking maize hybrid Liaoyu 23 as material,the effects of different meteorological conditions on kernel filling and dehydration rates were investigated from 2013 to 2014.The results indicated that maize showed growth retardation,slower accumulation of grain dry matter and lower dehydration rate because of wa-terlogging earlier and drought later in growing period.Also,plants showed stem rot,wilt,cluster drop and un-filled grains by the rainy and cloudy weather at middle and later filling stages.