植物营养与肥料学报2011,17(2)：276-282 Plant Nutrition and Fertilizer Science
不同氮肥水平下寒地稻器官不同形态氮含量
变化特征研究
刚爽'，赵宏伟1，王敬国"，刘化龙"，臧家祥"，高扬"2（1东北农业大学水稍研究所，国家水稍区域技术创新中心，黑龙江哈尔滨150030；
2黑龙江省农垦科学院水稻研究所，黑龙江佳木斯154007）
摘要：以寒地梗稻松梗6号和松梗9号为试材，研究了氮素用量对寒地梗稍植株营养性氮素（AN）、功能性氮素(FN)和结构性氮素(SN)形成积累及其变化的影响。结果表明，施氮水平对两品种功能叶片和茎秆AN和SN含量影响较大，且品种间影响程度不一致；而子粒AN和SN含量对施氮量反应不敏感。施氮量对两品种功能叶片和子粒FN含量影响较大，而对等秆FN含量影响较小。两品种功能叶片和签秆AN含量随着生育进程的推进呈单峰曲线变化，均在灌浆期达到峰值：子粒AN含量随生育进程推进旱“高一低一高"的变化趋势。两品种各器官FN含
量大于松梗6号。两品种叶片和※秆SN含量（除松梗9号NO、N100和N200处理外）表现为先上升后下降，开花期最高；子粒SN含量自开花到成熟均垦缓慢下降始势；松梗9号叶片和茎秆SN含量大于松梗6号。相关分析可知，功能叶片和茎秆（除穗期外)各时期AN含量与产量呈显著或极显著正相关关系；子粒SN和FN含量分别与产量基显著和极显著正相关关系。
关键调：寒地梗稻；氮素用量；营养性氮素；功能性氮索；结构性氮素
中图分类号：S511.2*2.062
文献标识码：A
文章编号：1008-505X(2011)02-0276-07
Effect of nitrogen fertilization rates on thevariation characteristic of differentnitrogenformscontentsinJaponicariceunderthecoldregion
GANG Shuang', ZHAO Hong-wei'* , WANG Jing-guo', LIU Hua-long', ZANG Jia-xiang', CAO Yang'-2
(1 Rice Research Institute of Northeast Agricultural University/Regional Center of National Rice Technological Innotation. Harbin,
Heilongjiang 150030, China; 2 Rice Research Institute, Heilongjiang Academy of Land Reclamation Sciences,
Jiamusi, Heilongjiang 154007, China)
Abstract: Nitrogen(N) fertilizer is one of the most important factors affecting grain yield in rice. The experiment investigated the effect of nitrogen application on the variation characteristics of the contents of three nitrogen forms[assimilable nitrogen(AN), functional nitrogen(FN), and structural nitrogen(SN)] in different organs using two rice varieties of cold Japonica (Songjing 6 and Songjing 9) as test materials. The results showed that nitrogen levels affected AN and SN contents in the functional leaves and stems significantly, and varied with the varities, while it had slight effect on the AN and SN contents in grains. Nitrogen application rate had more significant influence on the FN content in function leaves and grains than in stems of two varieties. For both varieties, AN contents in func-tional leaves and stems presented a single peak curve with the growth process, and reached the maximum at the fill-ing stage; while AN content of grains showed a "high low high" variation tendency. FN contents in different or-gans of both varieties were increased with the growth process generally, but the FN contents of leaves and stems de-
收稿日期：2010-06-18
接受日期：2010-10-22
基金项目：国家科技支撑计划项日(2007BAD65B01)；农业部跨越计划项目；省科技攻关计划重大项目（CA09B102-1)；东北农业大学创新团
队项目(CXT001-2-1)资助。
作者简介：刚爽（1985一），女，黑龙江齐齐哈尔人，在读硕士研究生，主要从事作物生理学研究。E-mail：gang_shuang@163.com
*通讯作者E-mail：hongweizhao@163.com
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