基于氮处理的不同生育期冬小麦光能利用率和光化学植被指数的关系  

Impact on Relation Between LUE and PRI of Winter Wheat in Different Growth Stages Under Various Different Nitrogen Levels

作　　者：郑腾飞[1,2] 郭建茂[1,2] 于鑫[1,2] 王琦[1,2] 吴玮[1,2] 

机构地区：[1]江苏省农业气象重点实验室,江苏南京210044 [2]南京信息工程大学应用气象学院,江苏南京210044

出　　处：《干旱气象》2012年第4期623-629,共7页Journal of Arid Meteorology

基　　金：国家自然科学基金面上项目(41071282)"基于多角度高光谱遥感的光化学反射植被指数与光能利用率研究";江苏省自然科学基金"基于遥感与作物生长模型的江苏水稻生产评估方法研究"(BK2009412);公益性行业(气象)科研专项经费项目"农用天气预报关键技术研究"(GYHY200906021);江苏高校优势学科建设工程共同资助

摘　　要：基于2011年南京信息工程大学农业气象试验站的小麦数据,利用Gamon,Penuelas等提出关于光能利用率和光化学反射植被指数的定义算法确定LUE和PRI的取值,使用氮处理的方法探究对不同生育期冬小麦LUE和PRI关系的影响。结果表明,处于2个不同生育期的冬小麦在3种氮处理条件下,LUE和PRI的值都有显著增加;2个生育期处于3种氮处理条件下的LUE和PRI表现出递增的相关关系,且由于抽穗初期比拔节初期接受更长时期的氮处理,所以同比吸收的氮量更多,相关性更大。The wheat data from agro-meteorological experimental station in Nanjing University of Information and Science in 2011 were used and the value of LUE and PRI was determined by using an Algorithm proposed by Gamon,Penuelas et al.The impact on relation between LUE and PRI in different growth stages of winter wheat under various different nitrogen levels was analyzed.The main conclusions were as follows：（1） The LUE and PRI of winter wheat in two different growth stages had a significant increase under three different nitrogen levels;（2） Correlation between the LUE and PRI of winter wheat in two different growth stages was incremental under these different nitrogen levels.And the correlation was more greater in the early heading stage than that in early stem extension stage of winter wheat because of longer period of different nitrogen levels.

关 键 词：LUE PRI 氮处理 

分 类 号：P49[天文地球—大气科学及气象学]