不同形态氮素对春小麦苗期生理特性及氮代谢酶的影响  

Effects of Different Nitrogen Nutrition Forms on Physiology Characteristics at Seedling Stage of Wheat

作　　者：刘东军[1] 张宏纪[1] 祁倩倩[1] 孙岩[1] 郭怡梵[1] 孙光祖[1] 王广金[1] 闫文义[1] 杨淑萍[1] 马淑梅[1] 

机构地区：[1]黑龙江省农业科学院作物育种研究所,黑龙江哈尔滨150086

出　　处：《作物杂志》2011年第1期20-24,共5页Crops

基　　金：黑龙江省自然科学基金(200830);黑龙江省农业科学院青年基金

摘　　要：利用水培试验研究不同形态氮素对不同类型小麦苗期生理特性及氮代谢酶的影响。结果表明,混合氮对于促进小麦的生长速率、提高叶片叶绿素含量及硝酸还原酶活性的效果最好,硝态氮次之,铵态氮效果最差。硝态氮显著提高了小麦叶片中硝态氮的含量,而铵态氮则显著提高了谷氨酰胺合成酶的活性。不同形态氮素对不同类型小麦的生长速度、叶片叶绿素含量和谷氨酰胺合成酶活性的影响没有显著差异,而强筋型小麦的硝酸还原酶活性显著高于中筋高产型小麦。The experiments were conducted under controlled hydroponics to investigate the growth responses of different varieties to mixed NH4＋/NO3-,NH4＋ and NO3-in wheat.the result indicated that mixed NH4＋/NO3-improved the growth of wheat,chlorophyll content and nitrate reductase activity of wheat leaves at seedling stage compare to NO3-or NH4＋ alone.NO3-increased the content of nitrate nitrogen in wheat leaves,while NH4＋ improved glutamine synthetase activity in wheat leaves.There were significant differences in nitrate reductase activity between strong gluten and middle gluten.

关 键 词：春小麦 硝态氮 铵态氮 氮素 

分 类 号：S512.12[农业科学—作物学]