农业环境科学学报2013，Vol.32Issue(8)：1493-1499,7.DOI:10.11654/jaes.2013.08.001
增强UV-B辐射对元阳梯田2个地方水稻品种N营养累积的影响
Effects of Enhanced UV-B Radiation on N Accumulation of Two Traditional Rice Colonies in Yuanyang Terraces Under Field Conditions
摘要
Abstract
In 2011,field experiments were conducted to understand the effects of enhanced UV-B radiation(2.5 kJ· m-2,5.0 kJ· m-2 and 7.5 kJ·m-2) on available N and total N in paddy soil,contents and accumulation of nitrogen of traditional rice colonies-Baijiaolaojing (BJLJ) and Yuelianggu(YLG) in Yuanyang terraces.The results showed that:under enhanced UV-B radiation condition,the biomass of leaves,stems,roots and spikes of two traditional rice colonics decreased significantly,especially the lowest biomass under TR7.5 treatment.The contents of N in each part of two traditional rice colonics increased significantly.The accumulation of N in BJLJ increased significantly.The accumulation of N in YLG increased firstly with the greatest accumulation under TR5.0 treatment,and then decreased under TR7.5 treatment.In summary,the contents of soil available and total N contents under enhanced UV-B radiation decreased and the output of N from paddy soil of two traditional rice colonics increased,comparing with decrease in storage of N in paddy soil.关键词
UV-B辐射/元阳梯田/地方水稻品种/N/营养累积Key words
UV-B radiation/ Yuanyang terraces/ traditional rice/ nitrogen/ nutrients accumulation分类
农业科技引用本文复制引用
刘畅,何永美,祖艳群,李元,唐有福..增强UV-B辐射对元阳梯田2个地方水稻品种N营养累积的影响[J].农业环境科学学报,2013,32(8):1493-1499,7.基金项目
国家自然科学基金(31060083,41205113) （31060083,41205113）
