摘要
为明确生育期干旱对夏玉米生长及耗水的影响,通过测坑控制试验,对比分析了不同生育阶段和水分胁迫水平下夏玉米的籽粒产量、耗水量和水分利用效率的差异。结果显示,抽雄期—灌浆期是形成夏玉米产量的需水关键期,此阶段发生干旱将引起大幅减产,夏玉米的产量与耗水量呈二次抛物线关系,产量最大时的耗水量为340 mm。
In order to clarify the effects of drought on the growth and water consumption of summer maize,the differences of grain yield,water consumption and water use efficiency of summer maize under different growth stages and water stress levels were compared and analyzed by pit test.The results shows that the tasseling stage and grain filling stage are the critical water period for the formation of summer maize yield,during which drought would lead to a large yield reduction.The yield and water consumption of summer maize shows a quadratic parabola relationship,and the water consumption at the maximum yield is 340 mm.
作者
马郁荻
王闯
宋韶帅
宋楠
李松平
MA Yudi;WANG Chuang;SONG Shaoshuai;SONG Nan;LI Songping(Henan Province Farmland Water Conservancy and Soil Conservation Technology Extension Station,Zhengzhou 450003,China;Zhengzhou Hydrology and Water Resources Survey Bureau,Zhengzhou 450003,China;Mianchi Agriculture and Rural Bureau,Mianchi 472400,China;Henan Keguang Engineering Construction Supervision CO.LTD.,Zhengzhou 450003,China;Henan Hydraulic Research Institute,Zhengzhou 450003,China)
出处
《河南水利与南水北调》
2021年第6期88-90,共3页
Henan Water Resources & South-to-North Water Diversion
基金
河南省基本科研业务费项目。
关键词
夏玉米
干旱
水分利用效率
产量
summer corn
drought
water use efficiency
yield
