不同夏玉米品种氮积累和利用效率差异的研究  

Differences in Nitrogen Accumulation and Nitrogen Utilization Efficiency among Summer Maize Cultivars

作　　者：徐建亭[1] 姜雯[1] 

机构地区：[1]青岛农业大学农学与植物保护学院/山东省旱作农业技术重点实验室,山东青岛266109

出　　处：《玉米科学》2014年第4期62-66,共5页Journal of Maize Sciences

基　　金：公益性行业(农业)科研专项经费项目(201203079);"十二五"农村领域国家科技计划课题(2011BAD09B01-2);山东省2013年度农业重大应用技术创新课题"山东省中低产田小麦玉米两熟丰产高效关键技术研究与示范";山东省高校优秀科研创新团队"旱地作物水分高效利用创新团队"

摘　　要：以当地8个主推夏玉米高产品种为材料,分别在施氮与不施氮两个水平下进行氮利用效率和丰产性综合比较。结果表明,在两个施氮水平下,不同基因型玉米品种间的产量、氮累积量、耐低氮指数和氮利用效率存在显著差异。登海605和金海604在施氮和不施氮水平下均能保证高产,耐低氮指数较高,氮响应度较低,即耐低氮能力强,可作为低氮丰产高效玉米品种在当地应用推广。Eight local popular summer maize cultivars were studied with two N fertilizer levels（without N supply, with N supply） under field condition. The results showed that significant differences were discovered among cultivars in the yield, aboveground N accumulation, low N tolerance index and N utilization under both two N supply conditions. Compared with other cultivars, Denghai605 and Jinhai604, showed higher grain yield of under both two N supply levels, lower N responsiveness, and higher low N tolerance index. Therefore, two cuhivars could be suggested as the ideal maize type with high yield and N utilization, and low N supply demand in local areas.

关 键 词：夏玉米 产量 耐低氮指数 氮利用效率 

分 类 号：S513.01[农业科学—作物学]