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当前位置: 首页 > 文章 > 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 农业环境科学学报 2013 (08) 1493-1499
Position: Home > Articles > Effects of Enhanced UV -B Radiation on N Accumulation of Two Traditional Rice Colonies in Yuanyang Terraces Under Field Conditions Journal of Agro-Environment Science 2013 (08) 1493-1499

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

作  者：
刘畅;何永美;祖艳群;李元;唐有福
单  位：
云南农业大学资源与环境学院;沈阳职业技术学院;云南农业大学基础与信息工程学院
关键词：
UV-B辐射;元阳梯田;地方水稻品种;N;营养累积
摘  要：
在2011年,以元阳梯田2个地方水稻品种白脚老粳和月亮谷为研究对象,以自然光照和大田水稻原位种植为条件,进行模拟臭氧衰减(0、10%、20%、30%)导致UV-B辐射增强(0、2.5、5.0、7.5kJ·m-2),研究2个地方水稻品种的N含量和累积量以及稻田土壤有效态N和全N含量对UV-B辐射增强的响应。结果表明:总体上UV-B辐射增强在TR7.5(UV-B辐射增强7.5kJ·m-2)处理时显著降低2个水稻品种叶、茎、根和穗生物量,在TR7.5处理时,水稻各部位生物量降到最小值。2个地方水稻品种叶、茎、根和穗N含量影响基本一致,显著增加2个地方水稻品种各部位N含量。随着UV-B辐射增强白脚老粳各部位群体累积量有显著增加的趋势,而月亮谷各部位群体累积量随UV-B辐射增强表现出先升后降。UV-B辐射增强促进两个水稻品种N营养输出,降低土壤碱解N和总N含量,导致土壤N库储量降低。
译  名：
Effects of Enhanced UV -B Radiation on N Accumulation of Two Traditional Rice Colonies in Yuanyang Terraces Under Field Conditions
作  者：
LIU Chang 1 , HE Yong-mei 1 , ZU Yan-qun 1 , LI Yuan 1* , TANG You-fu 2 (1.College of Resource and Environment, Yunnan Agricultural University, Kunming 650201,China; 2.Comprehensive Agricultural Service Center of Xinjie Town, Honghe 662416,China)
关键词：
UV-B radiation; Yuanyang terraces; traditional rice; nitrogen; nutrients accumulation
摘  要：
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 TR 7.5 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 TR 5.0 treatment, and then decreased under TR 7.5 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.

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