施氮量对不同源库类型粳稻物质积累与氮素吸收的影响

doi:10.3864/j.issn.0578-1752.2025.11.004

Abstract

Abstract:

【Objective】 This study aimed to investigate the overground part material accumulation and nitrogen transport of japonica rice with different sources and library types under different nitrogen application conditions, in order to select the japonica rice strain with high yield and high nitrogen efficiency, and explore the optimal nitrogen application rate for the growth of this japonica rice variety, ultimately achieve an increase in yield.【Method】 The trial was conducted in 2022-2023, with the source library interaction type Yangchan35003, source restriction type Yangchan35002, and library restriction type Yangchan35004 as test materials, and the split zone design was adopted. Four nitrogen application treatments of 180 kg·hm^-2, 225 kg·hm^-2, 270 kg·hm^-2 and 315 kg·hm^-2 were set. The yield, dry matter accumulation and nitrogen related indexes (mainly taking nitrogen transport efficiency, nitrogen transport contribution rate, harvest index, nitrogen harvest index, grain production efficiency, dry matter production efficiency and nitrogen fertilizer productivity as the evaluation indexes of nitrogen utilization efficiency) of different types of japonica rice under each treatment were measured at the key stage, the changes of different types of japonica rice under different nitrogen treatment were analyzed in the bar chart, and the influence of nitrogen application on material accumulation and transport was delved; the index mean value and variation coefficient of japonica rice were compared, the differences in indicators caused by different nitrogen application amounts were eliminated, and the differences between different types of japonica rice were highlighted; by using the correlation coefficient, the relationship between yield types of japonica rice and nitrogen utilization efficiency were explored, and the influence of nitrogen application on the accumulation of dry matter, nitrogen utilization and yield of japonica rice in heading and maturity period were analyzed.【Result】 (1) Applying additional nitrogen fertilizer within the range of 180-315 kg·hm^-2 could significantly increased the yield of each type of japonica rice (9.68%-29.19%), dry matter and nitrogen accumulation at heading stage (3.26%-28.57% and 8.57%-47.91%), and dry matter and nitrogen accumulation at maturity stage (1.01%-24.84% and 3.83%-57.98%) during the two-year period. Meanwhile, it was also beneficial to improve nitrogen transport capacity of leaves and stem at maturity stage. (2) Under the same nitrogen application conditions, the accumulation of dry matter, the accumulation of nitrogen, 1000-grain weight and setting percentage in Yangchan35003 were higher than that in Yangchan35002 and Yangchan35004 (29.08%-44.12%, 9.32%-29.21%, 11.40%-15.42%, 17.67%-40.70% and 25.93%-44.13%, 18.25%-26.17%, 6.16%-8.30%,-1.50%-13.96%, respectively) during the two-year period, the final yield exceeded the two types of japonica rice (24.26%-32.33% and 21.14%-30.05% higher than the yield Yangchan35002 and 35004, respectively) during the two-year period.(3) The high nitrogen transport capacity was not a unique feature of the source library interaction type strain. In this experiment, under the same nitrogen level condition, the nitrogen transport efficiency of Yangchan35004 was similar to the source library interaction type strain in the experiment, but the nitrogen intake was lower than Yangchan35003 (15.43%-20.74%), and the yield was lower than Yangchan35003 (17.45%-23.11%) during the two-year period, so it was a low yield and high nitrogen efficiency rice strain.【Conclusion】 Under the condition of applying 270 kg·hm^-2 of nitrogen fertilizer, Yangchan35002 could significantly optimize the synergy utilization efficiency of nutrients and temperature-light resources, enhance the nitrogen absorption and transportation capacity of plants, and improve the yield performance of the population. It was determined as the optimal combination in this experiment.

Key words: japonica rice, yield, nitrogen fertilizer, material accumulation, nitrogen efficiency

ZHOU Yu, SUN Tong, ZHANG YanHong, RU Yan, SU Tan, WANG Shuai, ZHU JinYan, HU JinLong, XIONG QiangQiang, ZHANG HongCheng, ZHOU NianBing. Effects of Nitrogen Fertilization Levels on Matter Accumulation and Nitrogen Uptake in Different Source and Library Types of Japonica Rice[J].Scientia Agricultura Sinica, 2025, 58(11): 2096-2117.

Figures/Tables 14

Table 1

Table 2

Table 3

Fig. 1

Table 4

Effects of differences among japonica rice with different source library types on accumulation of dry matter"

年份 Year	指标 Trait	扬产35003 Yangchan35003			扬产35002 Yangchan35002			扬产35004 Yangchan35004
年份 Year	指标 Trait	变幅 Range	平均值 Mean	变异系数 CV (%)	变幅 Range	平均值 Mean	变异系数 CV (%)	变幅 Range	平均值 Mean	变异系数 CV (%)
2022	抽穗期总干重 Heading total dry matter weight (t·hm^-2)	13.25—14.74	13.92	3.15	12.31—14.87	13.62	6.40	10.29—13.42	11.68	9.81
	抽穗期茎干重 Heading stem dry matter weight (t·hm^-2)	7.83—8.82	8.30	3.98	7.66—8.85	8.15	5.22	6.00—7.71	6.70	9.50
	抽穗期叶干重 Heading leaf dry matter weight (t·hm^-2)	3.92—4.73	4.20	5.95	3.17—4.42	3.79	10.91	2.88—3.83	3.33	10.38
	抽穗期穗干重 Heading panicle dry matter weight (t·hm^-2)	1.07—1.72	1.42	16.23	1.07—2.19	1.68	20.44	1.41—1.88	1.66	11.35
	成熟期总干重 Mature total dry matter weight (t·hm^-2)	21.49—24.22	22.59	4.43	14.89—18.72	16.64	7.69	14.80—18.26	16.90	8.96
	成熟期茎干重 Mature stem dry matter weight (t·hm^-2)	6.59—7.40	6.99	3.81	4.26—5.42	4.76	8.27	3.68—5.65	4.66	13.82
	成熟期叶干重 Mature leaf dry matter weight (t·hm^-2)	4.23—5.16	4.73	7.47	3.50—4.81	4.13	11.39	2.88—3.84	3.30	9.48
	成熟期穗干重 Mature panicle dry matter weight (t·hm^-2)	10.67—11.65	10.87	4.35	7.13—8.49	7.75	6.11	8.24—9.64	8.95	6.86
2023	抽穗期总干重 Heading total dry matter weight (t·hm^-2)	13.37—14.73	13.99	2.98	12.26—14.50	13.41	6.55	10.24—13.64	11.73	10.80
	抽穗期茎干重 Heading stem dry matter weight (t·hm^-2)	7.91—9.06	8.38	4.46	7.69—8.68	8.10	4.70	6.03—7.90	6.77	10.58
	抽穗期叶干重 Heading leaf dry matter weight (t·hm^-2)	3.92—4.53	4.19	5.53	3.03—4.52	3.78	13.39	2.78—3.88	3.34	11.23
	抽穗期穗干重 Heading panicle dry matter weight (t·hm^-2)	1.55—1.68	1.42	15.98	0.91—2.21	1.53	29.45	1.31—1.86	1.62	12.80
	成熟期总干重 Mature total dry matter weight (t·hm^-2)	21.58—24.62	22.90	4.46	14.99—18.67	16.84	7.88	15.00—19.33	17.20	9.14
	成熟期茎干重 Mature stem dry matter weight (t·hm^-2)	6.66—7.40	7.08	3.80	4.33—5.05	4.82	8.45	3.79—5.65	4.72	14.14
	成熟期叶干重 Mature leaf dry matter weight (t·hm^-2)	4.28—5.23	4.77	6.88	3.53—4.92	4.15	11.26	2.94—3.96	3.38	10.18
	成熟期穗干重 Mature panicle dry matter weight (t·hm^-2)	10.64—12.00	11.05	4.31	7.13—8.69	7.87	6.97	8.26—9.72	9.10	6.88

Table 4

Fig. 2

Fig. 3

Table 5

Effects of differences among japonica rice with different source library types on accumulation of nitrogen"

年份 Year	指标 Trait	扬产35003 Yangchan35003			扬产35002 Yangchan35002			扬产35004 Yangchan35004
年份 Year	指标 Trait	变幅 Range	平均值 Mean	变异系数 CV (%)	变幅 Range	平均值 Mean	变异系数 CV (%)	变幅 Range	平均值 Mean	变异系数 CV (%)
2022	抽穗期总吸氮量 Heading total nitrogen content (kg·hm^-2)	112.97—169.55	140.34	13.79	108.54—170.70	139.5	15.56	107.99—166.37	137.40	14.59
	抽穗期茎吸氮量 Heading stem nitrogen content (kg·hm^-2)	34.38—56.00	45.33	15.97	35.24—60.54	47.08	18.47	32.40-54.76	42.51	18.63
	抽穗期叶吸氮量 Heading leaf nitrogen content (kg·hm^-2)	62.44—99.85	80.06	16.96	60.32—95.23	75.75	16.20	60.61—93.02	77.48	14.10
	抽穗期穗吸氮量 Heading panicle nitrogen content (kg·hm^-2)	13.32—16.74	14.95	9.56	9.82—24.10	16.67	28.50	14.98—18.59	17.41	9.21
	成熟期总吸氮量 Mature total nitrogen content (kg·hm^-2)	147.75—210.81	172.11	12.81	113.02—189.52	150.15	17.88	117.54—171.71	141.67	13.13
	成熟期茎吸氮量 Mature stem nitrogen content (kg·hm^-2)	18.82—31.42	23.49	17.91	14.32—31.02	23.04	25.80	13.44—26.55	19.51	22.29
	成熟期叶吸氮量 Mature leaf nitrogen content (kg·hm^-2)	33.23—61.02	45.14	22.06	33.50—60.86	46.78	21.07	26.44—45.18	34.08	18.82
	成熟期穗吸氮量 Mature panicle nitrogen content (kg·hm^-2)	95.70—118.38	103.49	7.79	65.20—97.64	80.33	14.08	77.65—99.97	88.08	9.02
2023	抽穗期总吸氮量 Heading total nitrogen content (kg·hm^-2)	114.40—170.77	138.95	14.66	102.59—164.30	136.57	16.40	110.87—172.42	139.33	15.00
	抽穗期茎吸氮量 Heading stem nitrogen content (kg·hm^-2)	35.09—56.51	45.55	16.07	34.69—58.75	45.98	18.34	32.91—56.69	42.87	20.04
	抽穗期叶吸氮量 Heading leaf nitrogen content (kg·hm^-2)	63.13—100.67	78.60	18.27	55.14—96.11	75.77	18.41	63.48—97.67	79.86	13.82
	抽穗期穗吸氮量 Heading panicle nitrogen content (kg·hm^-2)	12.92—16.74	14.79	10.60	8.35—23.50	14.83	37.75	14.47—18.05	16.60	9.72
	成熟期总吸氮量 Mature total nitrogen content (kg·hm^-2)	150.41—217.61	176.49	13.52	115.91—193.42	153.69	17.95	119.02—176.15	144.55	13.76
	成熟期茎吸氮量 Mature stem nitrogen content (kg·hm^-2)	19.17—32.58	24.39	18.45	14.25—32.44	23.12	26.86	13.99—26.97	19.76	22.18
	成熟期叶吸氮量 Mature leaf nitrogen content (kg·hm^-2)	34.52—62.72	46.12	22.56	34.06—60.29	47.76	20.49	26.84—47.19	35.12	20.03
	成熟期穗吸氮量 Mature panicle nitrogen content (kg·hm^-2)	96.73—122.31	105.98	8.64	67.60—100.69	82.80	14.12	78.18—101.99	89.67	9.66

Table 5

Fig. 4

Fig. 5

Fig. 6

Fig. 7

Table 6

Effects of differences among japonica rice with different source library types on nitrogen transfer and use characteristics"

年份 Year	指标 Trait	扬产35003 Yangchan35003			扬产35002 Yangchan35002			扬产35004 Yangchan35004
年份 Year	指标 Trait	变幅 Range	平均值 Mean	变异系数 CV (%)	变幅 Range	平均值 Mean	变异系数 CV (%)	变幅 Range	平均值 Mean	变异系数 CV (%)
2022	总氮素转运量 Total nitrogen transport (kg·hm^-2)	44.77—63.42	56.76	13.55	47.74—63.90	53.01	10.70	53.12—76.04	66.40	12.45
	茎鞘氮素转运量 Stem nitrogen transport (kg·hm^-2)	15.57—25.57	21.84	16.44	20.92—29.53	24.05	11.88	18.22—28.21	23.00	16.37
	叶片氮素转运量 Leaf nitrogen transport (kg·hm^-2)	29.20—38.83	34.92	13.52	26.82—34.37	28.96	10.65	34.17—47.83	43.40	11.27
	氮素转运效率 Nitrogen transportation efficiency (%)	41.02—47.77	45.51	6.85	39.75—48.73	43.62	8.56	52.37—56.84	55.56	3.84
	氮素转运贡献率 Nitrogen transportation contribution rate (%)	47.87—61.87	54.80	10.63	62.78—70.94	65.89	5.57	71.29—79.64	75.22	4.67
	氮素籽粒生产效率 Nitrogen grain yield production efficiency (kg·kg^-1)	52.64—61.81	56.62	7.09	45.32—55.90	51.67	9.09	51.62—58.50	55.29	5.23
	氮素干物质生产效率 Nitrogen dry matter production efficiency (kg·kg^-1)	115.85—143.12	132.44	9.10	98.63—128.25	112.21	11.30	112.33—125.29	119.91	4.80
	收获指数Harvest index (%)	38.05—45.44	42.91	7.73	43.58—47.86	46.14	4.08	44.92—47.44	46.11	2.25
	氮素收获指数 Nitrogen harvest index (%)	56.60—63.81	60.43	5.20	51.24—57.26	54.00	4.66	59.15—64.88	62.43	4.06
	氮肥偏生产力 Nitrogen partial productivity (kg·kg^-1)	34.00—46.06	40.18	13.76	26.63—36.61	31.84	14.05	27.27—37.72	32.34	14.73
2023	总氮素转运量 Total nitrogen transport (kg·hm^-2)	44.54—61.87	53.64	13.51	41.53—62.13	50.86	13.28	55.56—80.21	67.85	12.14
	茎鞘氮素转运量 Stem nitrogen transport (kg·hm^-2)	15.93—25.36	21.16	15.67	20.44—26.31	22.85	9.98	17.73—29.73	23.11	18.65
	叶片氮素转运量 Leaf nitrogen transport (kg·hm^-2)	28.61—37.94	32.48	14.81	21.09—35.82	28.01	16.38	36.64—50.48	44.74	9.78
	氮素转运效率 Nitrogen transportation efficiency (%)	40.57—45.26	43.50	4.97	40.05—46.81	42.18	7.54	52.37—57.24	55.55	4.09
	氮素转运贡献率 Nitrogen transportation contribution rate (%)	47.70—52.34	50.50	4.25	59.84—64.52	61.55	3.40	73.44—77.27	75.54	2.23
	氮素籽粒生产效率 Nitrogen grain yield production efficiency (kg·kg^-1)	51.73—62.07	58.24	7.75	46.23—58.26	53.24	10.07	52.62—58.57	56.30	4.64
	氮素干物质生产效率 Nitrogen dry matter production efficiency (kg·kg^-1)	113.78—143.15	131.10	9.74	98.29—127.48	111.36	11.39	111.34—125.16	119.67	5.40
	收获指数Harvest index (%)	41.96—45.51	44.51	3.84	45.70—49.53	47.87	3.82	46.34—47.84	47.06	1.37
	氮素收获指数 Nitrogen harvest index (%)	56.60—63.42	60.37	5.01	52.07—57.70	54.22	4.59	58.73—64.57	62.32	4.24
	氮肥偏生产力 Nitrogen partial productivity (kg·kg^-1)	34.57—51.08	42.48	16.94	27.65—38.60	33.45	14.56	28.54—39.61	33.55	14.23

Table 6

Table 7

Correlation coefficients between yield, dry matter, nitrogen accumulation, and nitrogen use efficiency with different source sink types"

品系 Cultivar	指标 Trait	施氮量 Nitrogen application		产量 Grain yield		氮素转运效率 NTE		氮素转运贡献率 NTCR		籽粒生产效率 GYE		干物质生产效率 NDMPE		收获指数 HI		氮素收获指数 NHI		氮肥偏生产力 NPFP
扬产35003 Yangchan35003	施氮量 Nitrogen application	1.000		0.899**		-0.673		0.488		-0.556		-0.962**		0.750*		-0.992**		-0.965**
	产量 Grain yield	0.899**		1.000		-0.609		0.400		-0.196		-0.827*		0.954**		-0.870**		-0.774*
	有效穗数 Nitrogen transportation efficiency	0.905**		0.908**		-0.847**		0.154		-0.517		-0.946**		0.776*		-0.916**		-0.780*
	穗粒数 Spikelets per panicle	0.811*		0.902**		-0.288		0.645		-0.039		-0.674		0.905**		-0.749*		-0.746*
	千粒重 1000-grain weight	0.822*		0.880**		-0.265		0.699		-0.024		-0.643		0.877**		-0.763*		-0.784*
	结实率 Filled grain rate	-0.583		-0.533		0.388		-0.240		0.291		0.591		-0.522		0.561		0.566
	成熟期总干重 Mature total dry matter weight	0.966**		0.789*		-0.606		0.546		-0.626		-0.932**		0.629		-0.972**		-0.968**
	成熟期茎干重 Mature stem dry matter weight	0.950**		0.798*		-0.451		0.684		-0.490		-0.851**		0.662		-0.925**		-0.982**
	成熟期叶干重 Mature leaf dry matter weight	0.978**		0.852**		-0.609		0.540		-0.537		-0.912**		0.700		-0.970**		-0.972**
	成熟期穗干重 Mature panicle dry matter weight	0.831*		0.609		-0.620		0.386		-0.721*		-0.875**		0.448		-0.870**		-0.821*
	成熟期总吸氮量 Mature total nitrogen content	0.956**		0.783*		-0.744*		0.374		-0.718*		-0.982**		0.602		-0.977**		-0.928**
	成熟期茎吸氮量 Mature stem nitrogen content	0.928**		0.752*		-0.754*		0.323		-0.734*		-0.974**		0.575		-0.951**		-0.897**
	成熟期叶吸氮量 Mature leaf nitrogen content	0.977**		0.817*		-0.746*		0.394		-0.697		-0.987**		0.632		-0.993**		-0.950**
	成熟期穗吸氮量 Mature panicle nitrogen content	0.930**		0.745*		-0.724*		0.368		-0.724*		-0.964**		0.571		-0.955**		-0.904**
扬产35002 Yangchan35002	施氮量 Nitrogen application	1.000		0.904**		-0.885**		-0.522		-0.954**		-0.991**		0.370		-0.964**		-0.974**
	产量 Grain yield	0.904**		1.000		-0.984**		-0.795*		-0.742*		-0.948**		0.711*		-0.940**		-0.797*
	有效穗数 Nitrogen transportation efficiency	-0.595		-0.237		0.174		-0.295		0.751*		0.502		0.356		0.432		0.723*
	穗粒数 Spikelets per panicle	0.970**		0.914**		-0.876**		-0.600		-0.895**		-0.964**		0.436		-0.907**		-0.914**
	千粒重 1000-grain weight	0.987**		0.882**		-0.874**		-0.475		-0.956**		-0.979**		0.333		-0.977**		-0.973**
	结实率 Filled grain rate	0.852**		0.941**		-0.900**		-0.748*		-0.674		-0.893**		0.734*		-0.847**		-0.752*
	成熟期总干重 Mature total dry matter weight	0.983**		0.874**		-0.870**		-0.493		-0.956**		-0.970**		0.306		-0.962**		-0.962**
	成熟期茎干重 Mature stem dry matter weight	0.955**		0.786*		-0.784*		-0.404		-0.980**		-0.917**		0.131		-0.892**		-0.949**
	成熟期叶干重 Mature leaf dry matter weight	0.993**		0.870**		-0.855**		-0.484		-0.973**		-0.972**		0.283		-0.945**		-0.972**
	成熟期穗干重 Mature panicle dry matter weight	0.934**		0.893**		-0.901**		-0.543		-0.858**		-0.948**		0.454		-0.974**		-0.900**
	成熟期总吸氮量 Mature total nitrogen content	0.995**		0.884**		-0.872**		-0.491		-0.962**		-0.982**		0.327		-0.964**		-0.976**
	成熟期茎吸氮量 Mature stem nitrogen content	0.994**		0.906**		-0.899**		-0.547		-0.950**		-0.986**		0.361		-0.969**		-0.960**
	成熟期叶吸氮量 Mature leaf nitrogen content	0.994**		0.890**		-0.868**		-0.487		-0.954**		-0.983**		0.348		-0.962**		-0.974**
	成熟期穗吸氮量 Mature panicle nitrogen content	0.992**		0.863**		-0.856**		-0.462		-0.970**		-0.974**		0.290		-0.959**		-0.980**
扬产35004 Yangchan35004	施氮量 Nitrogen application	1.000	0.956**		-0.880**		0.761*		-0.844**		-0.965**		0.296		-0.968**		-0.980**
	产量 Grain yield	0.956**	1.000		-0.816*		0.728*		-0.681		-0.905**		0.532		-0.906**		-0.898**
	有效穗数 Nitrogen transportation efficiency	0.912**	0.937**		-0.766*		0.797*		-0.695		-0.894**		0.480		-0.887**		-0.855**
	穗粒数 Spikelets per panicle	0.889**	0.842**		-0.950**		0.493		-0.872**		-0.930**		0.153		-0.938**		-0.820*
	千粒重 1000-grain weight	0.941**	0.962**		-0.751*		0.717*		-0.643		-0.844**		0.469		-0.848**		-0.915**
	结实率 Filled grain rate	-0.663	-0.488		0.861**		-0.187		0.931**		0.773*		0.335		0.763*		0.667
	成熟期总干重 Mature total dry matter weight	0.987**	0.935**		-0.866**		0.730*		-0.828*		-0.938**		0.267		-0.946**		-0.978**
	成熟期茎干重 Mature stem dry matter weight	0.974**	0.941**		-0.892**		0.657		-0.817*		-0.932**		0.277		-0.944**		-0.944**
	成熟期叶干重 Mature leaf dry matter weight	0.975**	0.888**		-0.933**		0.655		-0.912**		-0.971**		0.155		-0.976**		-0.961**
	成熟期穗干重 Mature panicle dry matter weight	0.963**	0.910**		-0.751*		0.829*		-0.751*		-0.880**		0.306		-0.884**		-0.981**
	成熟期总吸氮量 Mature total nitrogen content	0.989**	0.920**		-0.918**		0.704		-0.890**		-0.972**		0.205		-0.980**		-0.971**
	成熟期茎吸氮量 Mature stem nitrogen content	0.986**	0.916**		-0.938**		0.686		-0.912**		-0.986**		0.189		-0.991**		-0.961**
	成熟期叶吸氮量 Mature leaf nitrogen content	0.975**	0.897**		-0.946**		0.652		-0.913**		-0.979**		0.170		-0.986**		-0.950**
	成熟期穗吸氮量 Mature panicle nitrogen content	0.991**	0.929**		-0.874**		0.745*		-0.851**		-0.949**		0.239		-0.958**		-0.982**

Table 7

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处理 Treatment	施氮量 Nitrogen application levels (kg·hm^-2)
处理 Treatment	基肥 Base fertilize	分蘖肥 Tillering fertilize	穗肥 Grain fertilize	总施肥量 Total fertilizer
N1	63.00	63.00	54.00	180.00
N2	78.75	78.75	67.50	225.00
N3	94.50	94.50	81.00	270.00
N4	110.25	110.25	94.50	315.00

年份 Year	品系 Cultivar	处理 Treatment	有效穗数 Number of effective panicle (×10⁴·hm^-2)	穗粒数 Spikelets per panicle	千粒重 1000-grain weight (g)	结实率 Filled grain rate (%)	产量 Grain yield (t·hm^-2)
2022	扬产35003 Yangchan35003	N1	195.86b	190.56b	26.4b	90.88a	8.29c
		N2	201.53b	220.36a	26.81a	85.29b	9.77b
		N3	203.56b	219.58a	26.89a	91.32a	10.06ab
		N4	213.59a	216.89a	26.88a	86.59b	10.71a
	扬产35002 Yangchan35002	N1	240.85b	184.26d	23.16b	64.59c	6.59c
		N2	255.96a	191.56c	23.49b	67.89b	7.72b
		N3	237.46b	207.65b	23.74ab	72.01a	8.05a
		N4	235.16b	216.59a	24.13a	71.56a	8.39a
	扬产35004 Yangchan35004	N1	190.26b	182.56b	24.46b	80.56b	6.79c
		N2	199.26b	182.89b	24.99a	86.59a	7.82b
		N3	219.56a	187.56b	25.01a	83.59ab	7.99b
		N4	223.59a	203.56a	25.32a	75.98c	8.59a
2023	扬产35003 Yangchan35003	N1	201.25b	196.90c	26.56b	91.99a	9.19c
		N2	205.63b	215.36b	26.76ab	90.55a	10.17b
		N3	207.90b	218.78ab	26.92a	89.26a	10.55ab
		N4	217.53a	225.85a	26.81ab	86.21b	10.89a
	扬产35002 Yangchan35002	N1	250.88a	189.13d	23.01b	67.46c	6.95c
		N2	255.60a	198.36c	23.47b	70.30b	8.12b
		N3	247.05a	212.35b	23.69ab	74.02a	8.49ab
		N4	237.60b	222.94a	24.03a	73.26a	8.71a
	扬产35004 Yangchan35004	N1	200.55b	185.23c	24.56b	87.26a	7.13c
		N2	208.80b	188.21bc	24.95a	86.52a	7.82b
		N3	229.80a	192.10b	25.15a	83.73b	8.45ab
		N4	237.60a	200.32a	25.23a	78.48c	8.99a
F-value
年份Year (Y)			0.684	0.322	0.001	0.265	0.588
品系Cultivar (C)			15.189**	3.192*	4.712*	13.181**	0.012
施氮量Nitrogen (N)			1.535	17.457**	0.808	0.068	9.859**

年份 Year	指标 Trait	扬产35003 Yangchan35003			扬产35002 Yangchan35002			扬产35004 Yangchan35004
年份 Year	指标 Trait	变幅 Range	平均值 Mean	变异系数 CV (%)	变幅 Range	平均值 Mean	变异系数 CV (%)	变幅 Range	平均值 Mean	变异系数 CV (%)
2022	有效穗数 Number of effective panicle (×10⁴·hm^-2)	191.15—217.72	203.64	4.07	229.79—257.10	242.36	4.42	182.09—234.05	208.17	8.35
	穗粒数 Spikelets per panicle	186.39—222.92	211.85	6.56	188.00—221.38	200.02	7.21	177.63—207.35	189.14	5.43
	千粒重 1000-grain weight (g)	26.42—27.07	26.77	0.90	22.91—24.34	23.63	1.84	24.25—25.52	24.95	1.59
	结实率 Filled grain rate (%)	80.57—93.78	88.52	4.70	62.56—73.43	69.01	5.22	75.21—87.10	81.68	5.75
	产量 Grain yield (t·hm^-2)	7.67—10.82	9.71	10.61	6.36—8.57	7.69	9.96	6.60—8.84	7.80	9.37
2023	有效穗数 Number of effective panicle (×10⁴·hm^-2)	196.89—221.13	208.08	3.64	234.61—258.77	247.78	3.82	192.01—248.51	219.19	8.56
	穗粒数 Spikelets per panicle	190.92—233.55	214.22	6.02	184.66—228.45	205.69	7.23	182.32—204.50	191.47	4.09
	千粒重 1000-grain weight (g)	26.63—26.95	26.76	0.58	22.87—24.13	23.55	1.74	24.46—25.33	24.97	1.19
	结实率 Filled grain rate (%)	85.48—94.27	89.50	3.44	65.63—76.44	71.26	4.76	80.34—92.10	84.00	5.50
	产量 Grain yield (t·hm^-2)	8.58—10.97	10.20	7.67	6.75—8.91	8.07	9.56	6.91—9.25	8.10	9.66

Effects of Nitrogen Fertilization Levels on Matter Accumulation and Nitrogen Uptake in Different Source and Library Types of Japonica Rice

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