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4 供试品种（系）的氮效率综合值和产量-氮效率综合指数

Table 4 CEV, GYNEI of tested varieties (lines)

指标 Trait 年份 Year 变幅 Range 变异系数 CV (%) 平均值 Mean 氮效率综合值CEV 2017 0.485-0.952 12.28 0.707 2018 0.535-0.977 11.63 0.752 产量-氮效率综合指数GYNEI 2017 0.569-1.583 19.45 1.008 2018 0.628-1.541 18.80 1.007