摘要
通过盆栽试验,研究苗期-拔节前期、拔节后期-孕穗期和孕穗期-开花期不同亏水水平即重度缺水(35%～45%θf,θf为田间持水量)、中度缺水(45%～55%θf)、轻度缺水(55%～65%θf)和正常灌水(CK,65%～80%θf)以及拔节后期-孕穗期和孕穗期-开花期不同亏水水平组合对糯玉米产量、耗水量和水分利用效率(WUE)的影响。结果表明,与CK处理相比,苗期-拔节前期各亏水处理,拔节后期-孕穗期、孕穗期-开花期轻度、中度亏水处理耗水量减少10.8%～19.8%,干子粒产量降低不显著,对WUE无显著影响;拔节前期-孕穗期中度和轻度亏水组合与孕穗期-开花期中度或轻度亏水组合耗水量减少15.8%～22.8%,总干物质量显著降低,产量降低不显著,对WUE无显著影响。
A pot experiment was carried out to study the effect of four water deficit levels at the seeding - early joining, later joining - booting and booting - flowering stages of maize crop, serious water deficit（35% - 45%θf, Of is field capacity）, medium water deficit（45% - 55%θf）, mild water deficit（55% - 65%θf） and normal irrigation（CK, 65% - 80%θf）, and combined water deficit levels at later joining - booting and booting - flowering stages on yield, water consumption and water use efficiency（WUE） of sticky maize. The results showed that compared to CK, the water deficit at the seeding - early joining stage, the mild or medium water deficit at later joining - booting or booting - flowering stages reduced water consumption by 10.8% - 19.8%, but did not significantly reduce yield and WUE; mild and medium water deficit at later joining - booting stage combined with the mild or medium water deficit at booting-flowering stage reduced water consumption by 15.8% - 22.8%, significantly reduce total dry mass, but they did not significantly reduce yield and did not significantly improve or reduce WUE, either.
出处
《玉米科学》
CAS
CSCD
北大核心
2012年第2期119-123,共5页
Journal of Maize Sciences
基金
国家"863"计划(2011AA100504)
国家自然科学基金项目(50869001)
关键词
糯玉米
干物质积累
耗水量
水分利用效率
Sticky maize
Dry mass accumulation
Water consumption
Water use efficiency
