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3 不同施肥方式及施氮量对越光一次枝梗性状的影响

Table 3 Effects of different fertilization methods and nitrogen application rates on primary branch traits of Koshihikari

施肥方式 Fertilization method	施氮量 Nitrogen application rate	一次枝梗数 Number of primary branches per panicle	一次枝梗粒数 Number of grains per primary branch	一次枝梗结实率 Seed-setting rate of primary branches (%)	一次枝梗千粒重 1000-grain weight of primary branches (g)	一次枝梗着粒密度 Grains per centimeter of primary branches (/cm)
TFM	N₀	7.38±0.29b	49.53±0.88d	94.36±0.49b	26.46±0.18a	2.77±0.05d
	N₄₅	7.37±0.31b	51.20±0.50c	95.50±0.22a	26.91±0.17a	2.86±0.03c
	N₉₀	7.62±0.11ab	52.46±0.47c	95.41±0.15a	25.72±0.13b	2.93±0.03c
	N₁₃₅	8.17±0.23ab	54.78±0.48b	93.18±0.22c	25.71±0.43b	3.06±0.30b
	N₁₈₀	8.62±0.15a	56.53±0.39a	92.73±0.02c	25.17±0.32b	3.16±0.20a
	平均	7.83±0.16^a	52.90±0.70^b	94.24±0.32^a	25.99±0.19^b	2.96±0.04^b
SEM	N₀	7.60±0.33a	50.37±0.46d	94.46±0.16ab	26.41±0.07a	2.81±0.30c
	N₄₅	7.99±0.28a	51.91±0.49c	94.53±0.41ab	26.98±0.11a	2.90±0.30c
	N₉₀	8.16±0.53a	53.92±0.39b	94.94±0.09a	26.91±0.31a	3.05±0.20b
	N₁₃₅	8.33±0.49a	57.84±0.40a	94.25±0.15b	26.88±0.20a	3.17±0.20a
	N₁₈₀	8.43±0.36a	54.87±0.68b	94.06±0.32b	26.68±0.16a	3.23±0.20a
	平均	8.10±0.17^a	53.78±0.71^a	94.45±0.13^a	26.77±0.09^a	3.03±0.04^a
F_F		1.53ns	9.11^**	2.54ns	26.74^**	16.95^**
F_N		4.01^*	67.97^**	27.38^**	4.79^**	65.65^**
F_F×N		0.44ns	6.77^**	10.83^**	4.52^*	0.83ns