氮肥用量及运筹对优良食味粳稻越光产量形成及根系形态的影响

许芸菲, 贾浩杨, 李叶彤, 曹瑞, 高梓淇, 赵喆, 陈立强, 梁潇

Effects of Nitrogen Application Rate and Management on Yield Formation and Root Morphology of High-Quality Japonica Rice Cultivar Koshihikari

Xu Yunfei, Jia Haoyang, Li Yetong, Cao Rui, Gao Ziqi, Zhao Zhe, Chen Liqiang, Liang Xiao

表4 不同施肥方式及施氮量对越光二次枝梗性状的影响

Table 4 Effects of different fertilization methods and nitrogen application rates on secondary branch traits of Koshihikari

施肥方式 Fertilization method 施氮量 Nitrogen application rate 二次枝梗数 Number of secondary branches per panicle 二次枝梗粒数 Number of grains per secondary branch 二次枝梗结实率 Seed-setting rate of secondary branches (%) 二次枝梗千粒重 1000-grain weight of secondary branches (g) 二次枝梗着粒密度 Grains per centimeter of secondary branches (/cm) TFM N0 5.46±0.14b 23.85±0.58d 87.19±0.17c 24.39±0.12ab 1.33±0.03d N45 6.23±0.59ab 26.21±0.86c 90.46±0.37a 24.70±0.27a 1.47±0.05c N90 6.83±0.57ab 28.99±0.15b 88.81±0.19b 23.63±0.35bc 1.62±0.01b N135 7.18±0.47a 29.12±0.13b 83.39±0.35d 23.41±0.23c 1.62±0.01b N180 7.60±0.19a 30.45±0.31a 79.88±0.46e 23.85±0.33bc 1.70±0.02a 平均 6.66±0.26b 27.72±0.66b 85.95±1.03a 23.99±0.16b 1.55±0.04b SEM N0 5.88±0.84c 23.49±0.34d 87.07±0.24a 24.47±0.32a 1.31±0.02d N45 6.78±0.22bc 28.10±0.01c 86.33±0.22a 25.03±0.09a 1.57±0.01c N90 8.13±0.53ab 30.15±0.40b 85.39±0.53b 25.01±0.38a 1.68±0.02b N135 8.64±0.35a 32.87±0.25a 84.69±0.29bc 24.97±0.11a 1.83±0.01a N180 9.17±0.11a 30.82±0.11b 84.20±0.47c 24.60±0.13a 1.72±0.01b 平均 7.72±0.37a 29.09±0.86a 85.54±0.31a 24.82±0.11a 1.62±0.05a FF 13.35** 33.37** 4.55* 26.25** 34.33** FN 11.52** 133.18** 149.52** 2.30ns 137.53** FF×N 0.69ns 8.98** 65.83** 3.23* 9.17**