Evaluation of the yield and nitrogen use efficiency of the dominant maize hybrids grown in North and Northeast China
文献类型: 外文期刊
作者: Chen FanJun 1 ; Fang ZenGuo 2 ; Gao Qiang 3 ; Ye YouLiang 4 ; Jia LiangLiang 5 ; Yuan LiXing 1 ; Mi GuoHua 1 ; Zhang FuSu 1 ;
作者机构: 1.China Agr Univ, Key Lab Plant Soil Interact, Minist Educ, Coll Resources & Environm Sci, Beijing 100193, Peoples R China
2.Qingdao Agr Univ, Coll Resources & Environm Sci, Qingdao 266109, Peoples R China
3.Jilin Agr Univ, Coll Resources & Environm Sci, Changchun 130118, Peoples R China
4.Henan Agr Univ, Coll Resources & Environm Sci, Zhengzhou 450002, Peoples R China
5.Hebei Acad Agr & Forestry, Inst Agr Resources & Environm, Shijiazhuang 050051, Peoples R China
关键词: maize;genotypexnitrogen interaction;low nitrogen stress;nitrogen use efficiency;yield
期刊名称:SCIENCE CHINA-LIFE SCIENCES ( 影响因子:6.038; 五年影响因子:4.754 )
ISSN: 1674-7305
年卷期: 2013 年 56 卷 6 期
页码:
收录情况: SCI
摘要: Breeding high-yielding and nutrient-efficient cultivars is one strategy to simultaneously resolve the problems of food security, resource shortage, and environmental pollution. However, the potential increased yield and reduction in fertilizer input achievable by using high-yielding and nutrient-efficient cultivars is unclear. In the present study, we evaluated the yield and nitrogen use efficiency (NUE) of 40 commercial maize hybrids at five locations in North and Northeast China in 2008 and 2009. The effect of interaction between genotype and nitrogen (N) input on maize yield was significant when the yield reduction under low-N treatment was 25%-60%. Based on the average yields achieved with high or low N application, the tested cultivars were classified into four types based on their NUE: efficient-efficient (EE) were efficient under both low and high N inputs, high-N efficient (HNE) under only high N input, low-N efficient (LNE) under only low N input, and nonefficient-nonefficient under neither low nor high N inputs. Under high N application, EE and HNE cultivars could potentially increase maize yield by 8%-10% and reduce N input by 16%-21%. Under low N application, LNE cultivars could potentially increase maize yield by 12%. We concluded that breeding for N-efficient cultivars is a feasible strategy to increase maize yield and/or reduce N input.
- 相关文献
作者其他论文 更多>>
-
利用5年定位试验研究华北小麦适宜施氮量
作者:Yang Yunma;杨云马;Jia Shulong;贾树龙;Sun Yanming;孙彦铭;Jia Liangliang
关键词:小麦;适宜施氮量;定位试验;表观利用率;偏生产力;农学效率