南京和宁夏地区UV-B辐射增强对小麦影响的对比研究  

Effects of Enhanced UV -B Radiation on Wheat in Nanjing and Ningxia

作　　者：王连喜[1] 肖薇[2] 王传海[2] 苏占胜[1] 李福生[1] 郑有飞[1] 

机构地区：[1]宁夏气象防灾减灾重点实验室,宁夏银川750002 [2]南京气象学院环境科学系,江苏南京210044

出　　处：《农业环境科学学报》2004年第1期34-38,共5页Journal of Agro-Environment Science

基　　金：国家自然科学基金资助项目(40175029);国家自然科学基金海外青年学者合作研究基金(40028503)

摘　　要：对比分析了南京地区和宁夏地区UV-B辐射增强对小麦的影响。结果表明,低海拔地区小麦比中高海拔地区小麦对UV-B辐射增强敏感,南京地区UV-B辐射增强抑制小麦生长、减小LAI,抑制生物学产量和经济学产量;宁夏地区UV-B辐射增强抑制株高,抑制生殖生长时期LAI和干物质累积,增加营养生长时期LAI和干物质累积,使经济学产量及其构成因素减少。The effects of enhanced UV -B radiation on wheat in Nanjing and Ningxia we re compared.The results indicated t hat the wheat in lower altitudes showed more sensitive to UV -B radiation than that in middle and higher altitudes.In Nanjing,the growth,leaf area index(LAI ),the biological yield and economic y ield of wheat all decreased under enhanced UV -B radiation conditions In Ningxia,however,the plant height,the LAI and the accumulation of dry ma tter of wheat in reproductive growth stage were re-strained,while the LAI and the accum ulation of dry matter of wheat in vegetative growth stage increased and th e economic yield and its constituents reduced.

关 键 词：南京市 宁夏地区 UV—B辐射 小麦 

分 类 号：S512.1[农业科学—作物学]