长江中下游地区常规中熟粳稻氮效率综合评价及高产氮高效品种筛选

刘秋员,周磊,田晋钰,程爽,陶钰,邢志鹏,刘国栋,魏海燕,张洪程

Comprehensive Evaluation of Nitrogen Efficiency and Screening of Varieties with High Grain Yield and High Nitrogen Efficiency of Inbred Middle-Ripe Japonica Rice in the Middle and Lower Reaches of Yangtze River

LIU QiuYuan,ZHOU Lei,TIAN JinYu,CHENG Shuang,TAO Yu,XING ZhiPeng,LIU GuoDong,WEI HaiYan,ZHANG HongCheng

表3 氮素吸收利用效率评价指标权重

Table 3 Weights of evaluation indexes for nitrogen uptake and utilization efficiency

年份 Year 氮肥回收效率 NRE 氮肥农学利用率 NAE 氮素生理利用率 NPE 氮素籽粒生产效率 GYE 氮素干物质生产效率 DME 2017 0.247 0.219 0.186 0.169 0.178 2018 0.186 0.192 0.230 0.211 0.182