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2 不同施肥方式及施氮量对越光产量及其构成因素的影响

Table 2 Effects of different fertilization methods and nitrogen application rates on yield and its components of Koshihikari

施肥方式 Fertilization method	施氮量 Nitrogen application rate	穗数 Panicle number (×10⁴/hm²)	穗粒数 Grains number per panicle	结实率 Seed-setting rate (%)	千粒重 1000-grain weight (g)	理论产量 Theoretical yield (kg/hm²)
TFM	N₀	333.33±6.67c	76.58±1.80c	93.18±0.65a	25.55±0.11ab	6077.52±34.28d
	N₄₅	393.33±17.64bc	79.66±0.43c	94.83±0.57a	25.78±0.29a	7659.57±61.85c
	N₉₀	460.67±29.06a	80.80±0.03bc	93.63±0.33a	24.56±0.29c	8559.42±85.44b
	N₁₃₅	440.00±34.64ab	85.06±3.23ab	89.20±1.02b	24.45±0.51c	8162.47±57.20a
	N₁₈₀	400.33±24.04a	86.36±1.98a	88.37±0.26b	24.95±0.35bc	7623.00±76.56c
	平均	405.53±43.57^a	81.70±4.34^b	91.84±1.62^a	25.06±0.42^b	7616.40±274.47^b
SEM	N₀	335.33±40.83c	76.33±6.24c	91.94±0.70a	25.49±0.13a	6165.73±65.35e
	N₄₅	407.33±29.33c	82.70±2.06b	91.32±0.24a	26.24±0.10a	7933.68±158.29d
	N₉₀	444.67±26.44b	83.32±1.15a	91.03±0.72a	26.31±0.05a	8985.96±48.14c
	N₁₃₅	490.00±22.00a	87.96±1.70a	90.41±0.69a	26.04±0.15a	9941.75±82.06a
	N₁₈₀	473.33±26.44a	85.33±1.70ab	90.97±0.55a	25.89±0.12a	9210.86±106.15b
	平均	412.13±64.13^a	83.13±5.15^a	91.13±0.59^a	26.00±0.20^a	8447.30±372.95^a
F_F		1.54ns	6.68^*	3.16ns	32.21^**	87.97^**
F_N		15.19^**	16.58^**	13.32^**	2.40ns	194.53^**
F_F×N		8.59^**	3.95ns	8.35^**	4.28ns	12.59^**