作物学报2016，Vol.42Issue(12)：1853-1863,11.DOI:10.3724/SP.J.1006.2016.01853
不同氮素处理对中麦175和京冬17产量相关性状和氮素利用效率的影响
Effect of Nitrogen on Yield Related Traits and Nitrogen Utilization Efficiency in Zhongmai 175 and Jingdong 17
摘要
Abstract
efficiency (NUpE) and N utilization efficiency (NUtE). Zhongmai 175 had higher yield and yield stability than Jingdong 17 in different N application treatments, showing higher levels of spike number (SN), stability of kernel number per spike (KNS), ker-nel weight, population vitality, biomass, HI, dry matter accumulation before flowering, TA, and NUpE. These characters might be the physiological basis of high yield and high efficiency in Zhongmai 175. Considering the return from yield and economic bene-fits, we suggest that the recommended N application amounts for Zhongmai 175 and Jingdong 17 should be 180–240 kg ha-1 in the northern part of Huang–Huai Rivers Valley Wheat Zone and 120–180 kg ha-1 in the Northern Winter Wheat Zone. NDVI and CTD at middle to late grain filling stage can be used for rapid evaluation of varietal sensitivity to nitrogen because they are highly correlated with SN, yield, and biomass of wheat.关键词
冬小麦/氮素利用效率/干物质/高产/稳产Key words
Winter wheat/Nitrogen utilization efficiency/Dry matter/High yield/Stability引用本文复制引用
李法计,徐学欣,肖永贵,何中虎,王志敏..不同氮素处理对中麦175和京冬17产量相关性状和氮素利用效率的影响[J].作物学报,2016,42(12):1853-1863,11.基金项目
本研究由中国农业科学院科技创新工程,国家公益性行业(农业)科研专项经费(201203033-2)和国家现代农业产业技术体系建设专项(CARS-03)资助。This study was supported by the Agricultural Science and Technology Innovation Program of CAAS, the China Special Fund for Agro-scientific Research in the Public Interest (201203033-2), and the China Agriculture Research System (CARS-03) （农业）
