安徽农业科学2011，Vol.39Issue(24)：14561-14563,14585,4.
不同施氮对冬青稞幼苗光合色素·生物量及产量的影响
Effects of Different Application Rates of Nitrogen on Photosynthetic Pigment, Biomass and Yield of Winter Highland Barley Seedlings
摘要
Abstract
[Objective] The aim was to stud; effects of different application rates of nitrogen on photosynlhetic pigment, biomass and yield of winter highland barley seedlings in order to provide reference for healthy seedling and drought resisting of highland barley seedlings in Hegu agricultural area of Tibet. [Method] The content of photosynlhetic pigment, biomass and yield of winter highland barley seedlings treated by different application rales of nitrogen (0, 90, 180 and 360 kg/hm2) were determined, and the controlling effects of nitrogen on them were studied. [Result] During the determining period, the contents of Chl( a + b) , Chla and Chlb in winter highland barley leaves decreased firstly and then increased; Car content and biomass increased gradually; and Chla/b increased firstly and then decreased. Nitrogen fertilizer had certain controlling effect on the pholosynthelic pigment, biomass and yield of winter highland barley leaves. Car content decreased with the increase of nitrogen application rate on 14th, March, while Chl(a +b), Chla and Chlb showed no obvious rule. The contents of Chl(a + b), Chla, Chlb and Car, biomass, single yield and 1 000-grain weight all increased with the increase of nitrogen application rate since 14th, March, furthermore they all reached the maximum under the treatment of 180 kg/hm2 nitrogen. [Conclusion] It is suggested that proper nitrogen application rale (180 kg/ hm') may promote grain yield and healthy seedling by enhancing pholoaynthetic pigment contents and improving the ability of scavenging oxida-live radicals in linzhi area.关键词
冬青稞/氯处理/光合色素/生物量/产量Key words
Winter highland barley/ Nitrogen treatments/ Photosynlhetic pigment/ Biomass/ Yield分类
农业科技引用本文复制引用
胡单,杨永红..不同施氮对冬青稞幼苗光合色素·生物量及产量的影响[J].安徽农业科学,2011,39(24):14561-14563,14585,4.基金项目
西藏自治区中青年自然基金项目(10-4). （10-4）
