长江中下游地区常规中熟粳稻产量、品质及氮素吸收性状的相互关系分析

刘秋员, 周磊, 田晋钰, 程爽, 陶钰, 邢志鹏, 刘国栋, 魏海燕, 张洪程

Relationships among grain yield, rice quality and nitrogen uptake of inbred middle-ripe japonica rice in the middle and lower reaches of Yangtze River

LIU Qiu-Yuan, ZHOU Lei, TIAN Jin-Yu, CHENG Shuang, TAO Yu, XING Zhi-Peng, LIU Guo-Dong, WEI Hai-Yan, ZHANG Hong-Cheng

表4 供试品种(系)产量及其构成因素

Table 4 Grain yield and its component of tested varieties (lines)

指标 Trait 2017 2018 变幅 Range 平均值 Mean 变异系数CV (%) 变幅 Range 平均值 Mean 变异系数CV (%) 有效穗数 Number of effective panicles (×104 hm-2) 302.58-467.52 365.20 8.16 268.51-456.36 350.82 8.58 千粒重 1000-grain weight (g) 20.60-29.88 26.38 5.87 20.78-30.17 26.62 6.57 穗粒数 Spikelet per panicle 75.38-136.08 103.21 10.48 74.19-134.88 103.31 11.08 结实率 Percentage of filled grains (%) 82.43-95.77 89.43 3.39 86.84-98.56 94.60 2.62 产量 Grain yield (t hm-2) 6.80-9.89 8.42 8.11 6.82-10.28 8.58 8.49 收获指数 Harvest index 0.44-0.49 0.46 2.39 0.44-0.49 0.47 2.34