辽宁农业科学Issue(3)：10-15,6.DOI:10.3969/j.issn.1002-1728.2015.03.003
辽宁省杂交稻与其亲本氮素利用特性的差异性分析
Difference Analyses of Nitrogen Absorption and Utilization Characteristics of Hybrid Rice Varieties and Their Parents in Liaoning Province
摘要
Abstract
The difference of the yield component traits and nitrogen uptake and utilization characteristics between hybrid combina-tions and their parents in different nitrogen levels were studied using six typical hybrid rice varieties and their parents of Liaoning province.The results showed that the panicle number and yield were most sensitive and the harvest index and grain weight were less sensitive to the changes of nitrogen levels.In nitrogen uptake and utilization characteristics,absorption ability was most sensi-tive and nitrogen harvest index and Agronomic Nitrogen Utilization Efficiency were less sensitive to the changes of nitrogen levels. Compared with their parents,the plant nitrogen content of hybrid rice varieties plant nitrogen was lower than that of their parents, while absorption ability of nitrogen,harvest index of nitrogen,physiological nitrogen utilization efficiency,agronomic nitrogen uti-lization efficiency,nitrogen absorption and utilization efficiency were higher than that of their parents especially in low nitrogen level.The results indicated the sensitive index between the physiological nitrogen utilization efficiency related to the nitrogen ab-sorption and utilization and plant nitrogen content correlated significantly as well,so the nitrogen absorption and utilization of the hybrids could be inferred by the reaction of parents to the increasing of the nitrogen application.关键词
杂交稻与亲本/氮素利用特性/差异性分析Key words
Hybrid rice varieties and their parents/Nitrogen absorption and utilization characteristics/Difference analysis分类
农业科技引用本文复制引用
蒋洪波,马秀芳,沈枫,刘博,唐志强,李小婉,张敏..辽宁省杂交稻与其亲本氮素利用特性的差异性分析[J].辽宁农业科学,2015,(3):10-15,6.基金项目
辽宁省科技攻关项目 （）
