摘要
以盆栽为试验条件,研究了不同氮肥条件下土壤盐分含量对冬小麦生长特性及产量的影响。结果表明:高盐胁迫导致小麦株高降低,分蘖能力下降,生物量及有效叶面积减少,有效穗数,每穗粒数减少,千粒重降低,产量下降。高盐胁迫处理与对照差异显著,低盐胁迫处理与对照差异不显著。在相同盐分胁迫下,施氮量与小麦性状及产量呈正相关关系,小麦株高、叶面积及产量等指标随着施氮量的增加表现增大趋势。
The influence of salinity stress and nitrogen fertilizer application interaction on the growth and yield is studied in this paper through pot experiment. The results show that the salinity stress led to the reducing of wheat height, the decline of tillering capaci- ty, the decreasing of biomass and available leaf area, the degrading of number of productive ear and number of grain per ear, the lessening of thousand seed weight and the descending of wheat yield. There are remarkable differences between high salt treatments and controls, but there are no significant differences in low salt stress and controls. Under the same salt concentration, there is posi tive correlation between the nitrogen fertilizer application and the wheat characters and yield. The wheat height, leaf area and yield increase with the application of nitrogen fertilizer.
出处
《节水灌溉》
北大核心
2013年第5期8-10,14,共4页
Water Saving Irrigation
基金
国家"863"计划项目(2011AA1005A4)
关键词
施氮量
盐分胁迫
株高
产量
nitrogen fertilizer salinity stress plant height yield
