摘要
通过对拔节期和抽雄期田间不同积水深度和积水时间的试验,模拟研究夏玉米对不同洪涝灾害程度的耐受力和洪涝灾害对产量构成因素及最终产量的影响。结果表明:积水对夏玉米密度、绿叶数、果穗长、果穗粗和实产的影响较明显,而对发育期出现早晚和百粒重的影响不明显。拔节期积水5d以上,抽雄期积水7d以上,夏玉米基本绝收。玉米苗越小,耐洪涝的能力越弱。
The endurance of summer maize to floods and the impacts of the floods to maize yields and its components were studied through the experiment of different flood depth and time for summer maize in the jointing stage and tasseling stage. The results showed that flood had obvious impacts on the maize density, maize greenery, ear lengthen and thick, and the yields, but not on the development process and one hundred grains weight. It was no gains if flood continued more than 5days in jointing stage or more than 7days during tasseling stage. The endurance of younger maizes was weaker than old ones.
出处
《中国农业气象》
CSCD
2009年第4期616-618,共3页
Chinese Journal of Agrometeorology
基金
河南省气象科技重大课题"河南省洪涝灾害监测评估技术研究"(Z200704)
淮河流域气象开放研究基金"淮河流域暴雨洪水灾害监测评估系统建设"(HRM200706)
关键词
夏玉米
生育期积水
试验
Summer maize
Flood disaster
Experiment