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6 不同产量-氮效率类型的产量和氮素吸收利用效率

Table 6 Grain yield and nitrogen efficiency index of different grain yield and nitrogen efficiency types

年份 Year 产量-氮 效率类型GYNET 指标 Trait 产量-氮效率 综合指数 GYNEI 产量 Grain yield (t·hm-2) 氮肥回收效率 NRE (%) 氮肥农学 利用率 NAE (kg·kg-1) 氮素生理 利用率 NPE (kg·kg-1) 氮素籽粒 生产效率GYE (kg·kg-1) 氮素干物质 生产效率 DME (kg·kg-1) 2017 Ⅰ 变幅 Range 1.142-1.583 8.51-9.89 30.65-47.83 7.41-13.58 18.53-32.16 35.40-39.38 76.91-83.74 变异系数 CV (%) 9.36 3.88 10.46 18.56 13.46 2.91 2.59 平均值 Mean 1.271a 9.27a 39.18a 9.15a 23.33a 37.19a 79.97a Ⅱ 变幅Range 0.882-1.107 7.41-9.16 26.90-42.48 4.37-8.52 12.60-24.42 33.75-37.56 72.97-81.41 变异系数 CV (%) 7.09 4.22 9.88 17.95 15.01 2.70 2.55 平均值 Mean 0.993b 8.38b 35.51b 6.30b 17.74b 35.47b 77.32b Ⅲ 变幅 Range 0.569-0.867 6.80-8.32 24.55-36.85 1.70-5.27 6.38-17.72 31.52-36.93 69.24-81.52 变异系数 CV (%) 8.84 5.25 10.21 21.01 20.59 3.97 4.08 平均值 Mean 0.791c 7.70c 30.36c 4.01c 13.25c 34.88b 76.10b 2018 Ⅰ 变幅 Range 1.156-1.541 8.90-10.28 30.10-45.79 7.71-13.97 19.83-30.96 39.43-44.26 83.75-91.58 变异系数 CV (%) 7.16 3.59 9.78 16.09 11.49 2.47 1.81 平均值 Mean 1.256a 9.50a 39.45a 9.95a 25.20a 41.30a 87.02a Ⅱ 变幅 Range 0.940-1.130 7.47-9.51 26.92-41.97 5.76-10.12 15.83-26.32 36.28-42.81 79.93-88.64 变异系数 CV (%) 5.54 4.19 9.96 13.69 11.54 3.57 2.89 平均值 Mean 1.042b 8.65b 36.51b 8.02b 22.02b 39.69b 84.35b Ⅲ 变幅 Range 0.628-0.924 6.82-8.71 21.06-35.58 2.27-7.31 10.76-22.47 36.53-43.13 77.15-91.93 变异系数 CV (%) 9.12 5.16 12.71 24.33 19.98 4.09 3.98 平均值 Mean 0.823c 7.94c 30.62c 5.13c 16.68c 38.87b 83.27b