氮素形态对不同专用型小麦根系及氮素利用率影响的研究  

Effects of nitrogen forms on roots and N fertilizer efficiency of different wheat cultivars with specialized end-uses.

作　　者：马新明[1] 王志强[1] 王小纯[1] 王书丽[1] 

机构地区：[1]河南农业大学农学院,郑州450002

出　　处：《应用生态学报》2004年第4期655-658,共4页Chinese Journal of Applied Ecology

基　　金：国家 8 63项目 ( 2 0 0 1AA115 3 80 );河南省高校科技人才创新工程资助项目 ( 2 0 0 2KJCX0 5 )

摘　　要：采用盆栽方法研究了 3种氮素形态对不同专用型小麦根系及氮素利用率的影响 .结果表明 ,拔节期以后 ,强筋型小麦豫麦 34在酰胺态氮处理下 ,根系生物量、根系活力、氮素利用率、氮收获指数和籽粒蛋白质含量最高 ,铵态氮处理次之 ,硝态氮处理最低 .中筋型小麦豫麦 4 9的各测定指标以铵态氮处理最高 ,其它指标在酰胺态氮和铵态氮间的趋势不同 ;弱筋型小麦豫麦 5 0在酰胺态氮处理下各项指标最高 ,而铵态氮处理下蛋白质含量最低 ,符合品种优质和专用 .A pot experiment showed that under NH\-2-N treatment,strong gluten wheat Yumai 34 had the highest root biomass,root activity,N use efficiency,N harvest index and grain protein content,but all of these were the lowest under NO -\-3-N treatment.For the medium gluten wheat Yumai 49,the items measured were the highest under NH\++\-4-N treatment,but not the same trend under NO - 3-N and NH\-2-N treatments.For the weak gluten wheat Yumai 50,NH\++\-4-N treatment was the best for its top quality and specialized end-uses.There was a significant relationship between grain protein content and N harvest index.

关 键 词：氮素形态 专用型小麦 根系 氮素利用率 

分 类 号：S512.106.2[农业科学—作物学]