不同施氮量与栽插密度对水稻群体生长及产量构成的影响

doi:10.6048/j.issn.1001-4330.2022.12.012

新疆农业科学 ›› 2022, Vol. 59 ›› Issue (12): 2969-2978.DOI: 10.6048/j.issn.1001-4330.2022.12.012

• 作物遗传育种·耕作栽培·种质资源 • 上一篇下一篇

不同施氮量与栽插密度对水稻群体生长及产量构成的影响

王振洋¹(), 王冀川¹(), 袁杰², 王奉斌³

1.塔里木大学农学院,新疆阿拉尔 843300
2.新疆农业科学院核技术生物技术研究所,乌鲁木齐 830091
3.新疆农业科学院粮食作物研究所,乌鲁木齐 830091

收稿日期:2021-12-30 出版日期:2022-12-20 发布日期:2023-01-30
通信作者: 王冀川
作者简介:王振洋(1996-),男,新疆乌鲁木齐人,硕士研究生,研究方向为作物栽培生理,(E-mail)583775080@qq.com
基金资助:
自治区科技支疆项目“水稻新品种选育及配套栽培技术示范与推广”(2019E0246);兵团2021年“三区”科技人才专项(BT1720220015F)

Effects of Different Nitrogen Application Rates and Planting Densities on Population Growth and Yield Components of Rice

WANG Zhenyang¹(), WANG Jichuan¹(), YUAN Jie², WANG Fengbin³

1. College of Agronomy, Tarim University, Aral Xinjiang 843300, China
2. Research Institute of Nuclear and Biotechnologi Urumqi 830091
3. Research Institute of Food Crops,Xinjiang Academy of Agricultural Sciences, Urumqi 830091

Received:2021-12-30 Online:2022-12-20 Published:2023-01-30
Correspondence author: WANG Jichuan
Supported by:
S & T Assisting Xinjiang Project of Xinjiang Uygur Autonomous Region " Demonstration and Promotion of New Rice Varieties Selection and Breeding and Supporting Cultivation Techniques "(2019e0246);Special Project for Scientific and Technological Talents of the Third District of the Corps in 2021(bt1720220015f)

摘要/Abstract

摘要： 【目的】 研究不同施氮量和栽插密度对新疆南疆水稻群体生长及产量特征的影响,为生产中合理密植与优化氮素优化管理提供依据。【方法】 选用新稻36号品种,设置主区为4种施氮量(纯氮0、120、240和360 kg/hm²,以N₀、N₁、N₂和N₃表示),副区为5种栽插密度(13.89×10⁴、16.67×10⁴、20.83×10⁴、27.78×10⁴和41.67×10⁴穴/hm²,以D₁、D₂、D₃、D₄和D₅表示)的裂区田间试验,分析茎蘖动态、干物质积累、产量构成与米质特征。【结果】 (1)适当增加栽插密度和施氮量有利于提高水稻群体茎蘖数,以N₂D₄的最终茎蘖数最大,达412.80×10⁴个/hm²;(2)南疆水稻群体干物质快速增长期在拔节前后至灌浆中后期,且随施氮量增加有延长趋势,其最终干物质积累量表现为N₃>N₂>N₁>N₀。密度过高不利于群体干物质积累,其最终干物质积累量表现为D₄>D₅>D₃>D₂>D₁;(3)N₂和D₁的穗粒数最大,施氮量过高,对提高结实率、粒重和分蘖成穗率不利。随施氮量及栽插密度增加,有效穗数和产量呈先增后降的趋势,以N₂D₄的有效穗数和产量最大,分别达399.08×10⁴穗/hm²和13.61 t/hm²,其次是N₃D₄,为371.46×10⁴穗/hm²和12.94 t/hm²;(4)密度对米质影响不大,增施氮肥利于蛋白质含量、糙米率、精米率增加,提高品质。【结论】 施氮量240~360 kg/hm²、栽插密度27.78×10⁴穴/hm²(30 cm×12 cm)可获得较高产量。

关键词: 水稻; 干物质; 产量; 施氮量; 密度

Abstract:

【Objective】 To study the effects of different nitrogen application rates and planting densities on the population growth and yield characteristics of rice in southern Xinjiang, so as to provide basis for rational close planting and optimal nitrogen management in production.【Methods】 Xindao 36 was selected to carry out a split plot field experiment with four nitrogen application rates (pure nitrogen 0, 120, 240 and 360 kg/hm², represented by N₀, N₁, N₂ and N₃) in the main area and five planting densities (13.89, 16.67, 20.83, 27.78 and 41.67×10⁴ holes/hm², represented by D₁, D₂, D₃, D₄ and D₅) in the sub area. The stem and tiller dynamics, dry matter accumulation, yield composition and rice quality characteristics were analyzed.【Results】 (1) Appropriately increasing planting density and nitrogen application rate was conducive to increasing the number of tillers in rice population, the number of final tillers of N₂D₄ was the largest, reaching 4.13×10⁶ stems/hm²;(2) The rapid growth period of dry matter of rice population in southern Xinjiang was from jointing to the middle and late filling stage, and tended to prolong with the increase of nitrogen application. The final dry matter accumulation was manifested as N₃>N₂>N₁>N₀. Too high density was unfavorable to dry matter accumulation, and the final dry matter accumulation was D₄>D₅>D₃>D₂>D₁; (3) The number of grains per panicle of N₂ and D₁ was the largest, and the excessive nitrogen application was unfavorable to the improvement of seed setting rate, grain weight and tillering panicle rate. With the increase of nitrogen application rate and planting densities, the number of effective panicles and yield increased first and then decreased. The number of effective panicles and yield of N₂D₄ were the largest, reaching 3.99×10⁶ panicles/hm² and 13.61 t/hm² respectively, followed by N₃D₄, 3.71×10⁶ panicles/hm² and 12.94 t/hm²; (4) Density had little effect on rice quality, and increasing nitrogen fertilizer was beneficial to increase protein content, brown rice rate and milled rice rate, and to improve quality.【Conclusion】 The nitrogen application rate is 240-360 kg/hm² and the planting density is 27.7878×10⁴ holes /hm² (30 cm × 12 cm) for higher yields.

Key words: rice; dry matter; output; nitrogen application rate; density

中图分类号:

S511

王振洋, 王冀川, 袁杰, 王奉斌. 不同施氮量与栽插密度对水稻群体生长及产量构成的影响[J]. 新疆农业科学, 2022, 59(12): 2969-2978.

WANG Zhenyang, WANG Jichuan, YUAN Jie, WANG Fengbin. Effects of Different Nitrogen Application Rates and Planting Densities on Population Growth and Yield Components of Rice[J]. Xinjiang Agricultural Sciences, 2022, 59(12): 2969-2978.

图/表 5

参考文献 21

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处理 Treatment		回归方程 Regression equation	R²	K (t/hm²)	t₁ (d)	t₂ (d)	t_m (d)	V_m (t/(hm²·d))	t (d)	G_t (t/hm²)
施氮量 N rate (kg/hm²)	N₀	Y=14.485 5/[1+e⁽³^.^{874 7-0}^.^{046 434}^X¹⁾]	0.993 8	14.53	54.90	112.24	83.57	0.17	57.34	9.57
	N₁	Y=17.162 0/[1+e⁽³^.^{538 8-0}^.^{045 648}^X¹⁾]	0.992 0	17.23	48.43	106.96	77.69	0.19	58.53	11.35
	N₂	Y=23.395 1/[1+e⁽³^.^{422 8-0}^.^{041 222}^X¹⁾]	0.991 3	23.56	50.83	115.98	83.41	0.24	65.14	15.51
	N₃	Y=27.608 2/[1+e⁽³^.^{288 8-0}^.^{036 424}^X¹⁾]	0.986 8	27.99	53.96	128.36	91.16	0.25	74.40	18.43
插秧密度 Planting density (10⁴ /hm²)	D₁	Y=17.100 6/[1+e⁽³^.^{478 4-0}^.^{043 147}^X¹⁾]	0.990 4	17.19	49.81	111.90	80.86	0.18	62.09	11.32
	D₂	Y=18.547 7/[1+e⁽³^.^{500 1-0}^.^{042 354}^X¹⁾]	0.990 5	18.65	51.28	114.55	82.92	0.19	63.27	12.28
	D₃	Y=20.479 0/[1+e⁽³^.^{525 1-0}^.^{041 581}^X¹⁾]	0.991 5	20.60	52.85	117.30	85.07	0.21	64.45	13.56
	D₄	Y=24.640 2/[1+e⁽³^.^{462 8-0}^.^{039 423}^X¹⁾]	0.990 6	24.84	54.19	122.39	88.29	0.24	68.19	16.36
	D₅	Y=22.021 8/[1+e⁽³^.^{365 5-0}^.^{040 986}^X¹⁾]	0.992 0	22.19	49.70	115.35	82.52	0.22	65.65	14.61
施氮量 ×插秧密度 N rate × Planting density	N₀×D₁	Y=11.997 9/[1+e⁽³^.^{967 6-0}^.^{047 916}^X¹⁾]	0.991 5	12.03	55.15	110.66	82.90	0.14	55.52	7.92
	N₀×D₂	Y=13.384 1/[1+e⁽⁴^.^{014 1-0}^.^{047 545}^X¹⁾]	0.993 8	13.41	56.53	112.46	84.49	0.16	55.93	8.83
	N₀×D₃	Y=15.128 4/[1+e⁽³^.^{999 5-0}^.^{045 962}^X¹⁾]	0.993 2	15.17	58.22	116.03	87.12	0.17	57.81	9.99
	N₀×D₄	Y=15.821 6/[1+e⁽³^.^{774 2-0}^.^{045 637}^X¹⁾]	0.994 9	15.87	53.62	112.01	82.82	0.18	58.39	10.45
	N₀×D₅	Y=16.094 4/[1+e⁽³^.^{716 9-0}^.^{046 189}^X¹⁾]	0.993 9	16.16	51.76	109.52	80.64	0.18	57.76	10.64
	N₁×D₁	Y=15.547 9/[1+e⁽³^.^{615 1-0}^.^{046 392}^X¹⁾]	0.992 0	15.60	49.34	106.82	78.08	0.18	57.48	10.27
	N₁×D₂	Y=16.275 1/[1+e⁽³^.^{631 5-0}^.^{046 514}^X¹⁾]	0.989 9	16.33	49.52	106.86	78.19	0.19	57.33	10.75
	N₁×D₃	Y=16.962 6/[1+e⁽³^.^{606 0-0}^.^{046 651}^X¹⁾]	0.990 3	17.02	48.84	106.05	77.45	0.20	57.21	11.21
	N₁×D₄	Y=19.851 9/[1+e⁽³^.^{389 1-0}^.^{041 754}^X¹⁾]	0.989 7	19.99	49.32	113.69	81.50	0.20	64.37	13.16
	N₁×D₅	Y=17.298 3/[1+e⁽³^.^{532 0-0}^.^{048 119}^X¹⁾]	0.996 1	17.37	45.77	101.36	73.56	0.21	55.59	11.44
	N₂×D₁	Y=19.753 0/[1+e⁽³^.^{454 1-0}^.^{043 165}^X¹⁾]	0.989 8	19.87	49.26	111.37	80.31	0.21	62.11	13.08
	N₂×D₂	Y=20.460 7/[1+e⁽³^.^{435 7-0}^.^{042 894}^X¹⁾]	0.991 6	20.59	49.13	111.68	80.40	0.22	62.55	13.56
	N₂×D₃	Y=23.404 9/[1+e⁽³^.^{465 7-0}^.^{040 996}^X¹⁾]	0.992 0	23.57	52.15	117.65	84.90	0.24	65.50	15.52
	N₂×D₄	Y=28.377 2/[1+e⁽³^.^{520 1-0}^.^{040 164}^X¹⁾]	0.991 7	28.59	54.63	121.48	88.05	0.28	66.85	18.83
	N₂×D₅	Y=25.033 0/[1+e⁽³^.^{282 8-0}^.^{040 307}^X¹⁾]	0.990 3	25.26	48.46	115.39	81.92	0.25	66.93	16.63
	N₃×D₁	Y=21.069 5/[1+e⁽³^.^{196 4-0}^.^{039 018}^X¹⁾]	0.986 8	21.29	47.84	117.18	82.51	0.20	69.35	14.02
	N₃×D₂	Y=24.363 9/[1+e⁽³^.^{272 3-0}^.^{037 122}^X¹⁾]	0.985 3	24.67	52.43	125.36	88.90	0.22	72.93	16.24
	N₃×D₃	Y=26.804 3/[1+e⁽³^.^{341 9-0}^.^{037 162}^X¹⁾]	0.988 9	27.14	54.31	127.06	90.68	0.25	72.75	17.87
	N₃×D₄	Y=35.484 6/[1+e⁽³^.^{387 4-0}^.^{035 015}^X¹⁾]	0.985 7	36.08	59.12	136.55	97.83	0.31	77.43	23.76
	N₃×D₅	Y=30.774 4/[1+e⁽³^.^{253 8-0}^.^{035 350}^X¹⁾]	0.986 9	31.29	54.67	131.57	93.12	0.27	76.90	20.60

处理 Treatment		回归方程 Regression equation	R²	K (t/hm²)	t₁ (d)	t₂ (d)	t_m (d)	V_m (t/(hm²·d))	t (d)	G_t (t/hm²)
施氮量 N rate (kg/hm²)	N₀	Y=14.485 5/[1+e⁽³^.^{874 7-0}^.^{046 434}^X¹⁾]	0.993 8	14.53	54.90	112.24	83.57	0.17	57.34	9.57
	N₁	Y=17.162 0/[1+e⁽³^.^{538 8-0}^.^{045 648}^X¹⁾]	0.992 0	17.23	48.43	106.96	77.69	0.19	58.53	11.35
	N₂	Y=23.395 1/[1+e⁽³^.^{422 8-0}^.^{041 222}^X¹⁾]	0.991 3	23.56	50.83	115.98	83.41	0.24	65.14	15.51
	N₃	Y=27.608 2/[1+e⁽³^.^{288 8-0}^.^{036 424}^X¹⁾]	0.986 8	27.99	53.96	128.36	91.16	0.25	74.40	18.43
插秧密度 Planting density (10⁴ /hm²)	D₁	Y=17.100 6/[1+e⁽³^.^{478 4-0}^.^{043 147}^X¹⁾]	0.990 4	17.19	49.81	111.90	80.86	0.18	62.09	11.32
	D₂	Y=18.547 7/[1+e⁽³^.^{500 1-0}^.^{042 354}^X¹⁾]	0.990 5	18.65	51.28	114.55	82.92	0.19	63.27	12.28
	D₃	Y=20.479 0/[1+e⁽³^.^{525 1-0}^.^{041 581}^X¹⁾]	0.991 5	20.60	52.85	117.30	85.07	0.21	64.45	13.56
	D₄	Y=24.640 2/[1+e⁽³^.^{462 8-0}^.^{039 423}^X¹⁾]	0.990 6	24.84	54.19	122.39	88.29	0.24	68.19	16.36
	D₅	Y=22.021 8/[1+e⁽³^.^{365 5-0}^.^{040 986}^X¹⁾]	0.992 0	22.19	49.70	115.35	82.52	0.22	65.65	14.61
施氮量 ×插秧密度 N rate × Planting density	N₀×D₁	Y=11.997 9/[1+e⁽³^.^{967 6-0}^.^{047 916}^X¹⁾]	0.991 5	12.03	55.15	110.66	82.90	0.14	55.52	7.92
	N₀×D₂	Y=13.384 1/[1+e⁽⁴^.^{014 1-0}^.^{047 545}^X¹⁾]	0.993 8	13.41	56.53	112.46	84.49	0.16	55.93	8.83
	N₀×D₃	Y=15.128 4/[1+e⁽³^.^{999 5-0}^.^{045 962}^X¹⁾]	0.993 2	15.17	58.22	116.03	87.12	0.17	57.81	9.99
	N₀×D₄	Y=15.821 6/[1+e⁽³^.^{774 2-0}^.^{045 637}^X¹⁾]	0.994 9	15.87	53.62	112.01	82.82	0.18	58.39	10.45
	N₀×D₅	Y=16.094 4/[1+e⁽³^.^{716 9-0}^.^{046 189}^X¹⁾]	0.993 9	16.16	51.76	109.52	80.64	0.18	57.76	10.64
	N₁×D₁	Y=15.547 9/[1+e⁽³^.^{615 1-0}^.^{046 392}^X¹⁾]	0.992 0	15.60	49.34	106.82	78.08	0.18	57.48	10.27
	N₁×D₂	Y=16.275 1/[1+e⁽³^.^{631 5-0}^.^{046 514}^X¹⁾]	0.989 9	16.33	49.52	106.86	78.19	0.19	57.33	10.75
	N₁×D₃	Y=16.962 6/[1+e⁽³^.^{606 0-0}^.^{046 651}^X¹⁾]	0.990 3	17.02	48.84	106.05	77.45	0.20	57.21	11.21
	N₁×D₄	Y=19.851 9/[1+e⁽³^.^{389 1-0}^.^{041 754}^X¹⁾]	0.989 7	19.99	49.32	113.69	81.50	0.20	64.37	13.16
	N₁×D₅	Y=17.298 3/[1+e⁽³^.^{532 0-0}^.^{048 119}^X¹⁾]	0.996 1	17.37	45.77	101.36	73.56	0.21	55.59	11.44
	N₂×D₁	Y=19.753 0/[1+e⁽³^.^{454 1-0}^.^{043 165}^X¹⁾]	0.989 8	19.87	49.26	111.37	80.31	0.21	62.11	13.08
	N₂×D₂	Y=20.460 7/[1+e⁽³^.^{435 7-0}^.^{042 894}^X¹⁾]	0.991 6	20.59	49.13	111.68	80.40	0.22	62.55	13.56
	N₂×D₃	Y=23.404 9/[1+e⁽³^.^{465 7-0}^.^{040 996}^X¹⁾]	0.992 0	23.57	52.15	117.65	84.90	0.24	65.50	15.52
	N₂×D₄	Y=28.377 2/[1+e⁽³^.^{520 1-0}^.^{040 164}^X¹⁾]	0.991 7	28.59	54.63	121.48	88.05	0.28	66.85	18.83
	N₂×D₅	Y=25.033 0/[1+e⁽³^.^{282 8-0}^.^{040 307}^X¹⁾]	0.990 3	25.26	48.46	115.39	81.92	0.25	66.93	16.63
	N₃×D₁	Y=21.069 5/[1+e⁽³^.^{196 4-0}^.^{039 018}^X¹⁾]	0.986 8	21.29	47.84	117.18	82.51	0.20	69.35	14.02
	N₃×D₂	Y=24.363 9/[1+e⁽³^.^{272 3-0}^.^{037 122}^X¹⁾]	0.985 3	24.67	52.43	125.36	88.90	0.22	72.93	16.24
	N₃×D₃	Y=26.804 3/[1+e⁽³^.^{341 9-0}^.^{037 162}^X¹⁾]	0.988 9	27.14	54.31	127.06	90.68	0.25	72.75	17.87
	N₃×D₄	Y=35.484 6/[1+e⁽³^.^{387 4-0}^.^{035 015}^X¹⁾]	0.985 7	36.08	59.12	136.55	97.83	0.31	77.43	23.76
	N₃×D₅	Y=30.774 4/[1+e⁽³^.^{253 8-0}^.^{035 350}^X¹⁾]	0.986 9	31.29	54.67	131.57	93.12	0.27	76.90	20.60

施氮量 N rate	密度 Density	有效穗数 Effective panicles (10⁴/hm²)	穗粒数 Grains per ear (Grain/ear)	结实率 Seed setting rate (%)	千粒重 1000-Grain Weight (g)	产量 Yield (t/hm²)	分蘖成穗率 Percentage of tillers formed (%)
N₀	D₁	192.58±6.94^d	122.60±6.65^a	84.02±1.74^b	24.53±1.36^b	5.77±0.21^c	88.18±7.27a
	D₂	218.77±8.67^c	114.81±2.41^b	86.34±1.36^a	25.03±1.61^b	6.27±0.29^bc	87.66±2.39^a
	D₃	223.⁰2±11.56^c	113.52±4.62^b	87.13±5.55^a	27.35±0.60^a	6.90±0.49^a	77.15±4.09^b
	D₄	263.38±6.94^a	111.63±5.78^b	87.34±1.36^a	24.48±0.21^b	7.20±0.50^a	77.65±5.16^b
	D₅	235.06±2.31^b	107.85±1.93^c	88.13±4.55^a	26.33±0.41^a	6.68±0.29^ab	58.49±2.41^c
	平均Mean	226.56±7.28	114.08±4.28	86.59±2.91	25.54±0.84	6.57±0.36	77.83±4.26
N₁	D₁	254.88±4.62^d	132.99±0.87^a	77.16±1.40^c	23.85±0.67^ab	8.09±0.43^b	87.15±3.57^a
	D₂	266.68±6.94^c	126.97±5.78^ab	81.99±3.13^b	25.01±0.40^a	8.49±0.74^ab	79.33±4.44^ab
	D₃	276.12±2.89^bc	126.14±1.83^b	83.12±1.60^b	23.82±0.59^ab	8.30±0.17^ab	73.73±0.70^b
	D₄	318.60±11.95^a	118.00±6.36^c	86.20±0.52^a	24.29±0.39^ab	9.14±0.69^a	74.66±3.62^b
	D₅	288.86±9.25^b	110.92±4.62^d	88.04±0.88^a	23.32±0.91^b	7.46±0.26^c	61.59±3.11^c
	平均Mean	281.03±7.13	123.00±3.89	83.30±1.51	24.06±0.59	8.29±0.46	75.29±3.09
N₂	D₁	313.88±7.32^d	149.62±4.05^a	76.14±2.07^c	23.15±0.96^b	10.87±0.49^c	87.19±3.44^a
	D₂	336.54±10.79^c	140.54±7.03^b	77.18±1.90^c	23.19±0.68^b	10.95±0.12^c	87.02±3.75^a
	D₃	356.95±11.08^b	137.47±0.48^b	80.95±2.50^b	24.17±0.98^ab	11.88±0.89^b	77.65±4.68^b
	D₄	399.08±25.24^a	136.05±2.60^b	83.65±1.70^ab	25.13±1.27^a	13.61±0.43^a	75.12±4.59^b
	D₅	381.85±6.94^a	123.31±4.53^c	85.14±3.54^a	23.23±0.18^ab	10.95±0.69^bc	60.15±2.88^c
	平均Mean	357.66±12.27	137.40±3.74	80.61±2.34	23.78±0.82	11.65±0.53	77.43±3.87
N₃	D₁	291.70±9.25^d	133.34±5.40^a	72.25±1.10^c	22.76±0.33^c	8.84±0.20^c	70.70±4.98^a
	D₂	318.60±14.45^c	129.80±5.40^ab	72.90±0.52^bc	22.53±0.02^c	9.34±0.82^bc	72.57±3.71^a
	D₃	344.56±12.91^b	126.02±3.85^bc	73.42±0.73^bc	22.72±0.83^c	9.86±0.43^b	66.71±3.39^ab
	D₄	371.46±3.47^a	120.71±4.53^c	75.68±1.91^ab	28.83±1.43^a	12.94±1.01^a	60.68±2.93^b
	D₅	360.61±3.08^ab	112.44±3.96^d	76.89±0.35^a	25.32±1.45^b	10.25±0.31^b	49.38±1.95^c
	平均Mean	337.39±8.63	124.46±4.63	74.23±0.92	24.43±0.81	10.25±0.55	64.01±3.39
ANOVA检验F值F value of ANOVA
F	N	386.15^**	12.80^**	49.65^**	10.10^**	459.54^**	103.97^**
	D	65.23^**	40.36^**	27.71^**	5.83^**	20.01^**	51.74^**
	N×D	1.17	0.96	2.00	5.71^**	2.66^*	0.74

施氮量 N rate	密度 Density	有效穗数 Effective panicles (10⁴/hm²)	穗粒数 Grains per ear (Grain/ear)	结实率 Seed setting rate (%)	千粒重 1000-Grain Weight (g)	产量 Yield (t/hm²)	分蘖成穗率 Percentage of tillers formed (%)
N₀	D₁	192.58±6.94^d	122.60±6.65^a	84.02±1.74^b	24.53±1.36^b	5.77±0.21^c	88.18±7.27a
	D₂	218.77±8.67^c	114.81±2.41^b	86.34±1.36^a	25.03±1.61^b	6.27±0.29^bc	87.66±2.39^a
	D₃	223.⁰2±11.56^c	113.52±4.62^b	87.13±5.55^a	27.35±0.60^a	6.90±0.49^a	77.15±4.09^b
	D₄	263.38±6.94^a	111.63±5.78^b	87.34±1.36^a	24.48±0.21^b	7.20±0.50^a	77.65±5.16^b
	D₅	235.06±2.31^b	107.85±1.93^c	88.13±4.55^a	26.33±0.41^a	6.68±0.29^ab	58.49±2.41^c
	平均Mean	226.56±7.28	114.08±4.28	86.59±2.91	25.54±0.84	6.57±0.36	77.83±4.26
N₁	D₁	254.88±4.62^d	132.99±0.87^a	77.16±1.40^c	23.85±0.67^ab	8.09±0.43^b	87.15±3.57^a
	D₂	266.68±6.94^c	126.97±5.78^ab	81.99±3.13^b	25.01±0.40^a	8.49±0.74^ab	79.33±4.44^ab
	D₃	276.12±2.89^bc	126.14±1.83^b	83.12±1.60^b	23.82±0.59^ab	8.30±0.17^ab	73.73±0.70^b
	D₄	318.60±11.95^a	118.00±6.36^c	86.20±0.52^a	24.29±0.39^ab	9.14±0.69^a	74.66±3.62^b
	D₅	288.86±9.25^b	110.92±4.62^d	88.04±0.88^a	23.32±0.91^b	7.46±0.26^c	61.59±3.11^c
	平均Mean	281.03±7.13	123.00±3.89	83.30±1.51	24.06±0.59	8.29±0.46	75.29±3.09
N₂	D₁	313.88±7.32^d	149.62±4.05^a	76.14±2.07^c	23.15±0.96^b	10.87±0.49^c	87.19±3.44^a
	D₂	336.54±10.79^c	140.54±7.03^b	77.18±1.90^c	23.19±0.68^b	10.95±0.12^c	87.02±3.75^a
	D₃	356.95±11.08^b	137.47±0.48^b	80.95±2.50^b	24.17±0.98^ab	11.88±0.89^b	77.65±4.68^b
	D₄	399.08±25.24^a	136.05±2.60^b	83.65±1.70^ab	25.13±1.27^a	13.61±0.43^a	75.12±4.59^b
	D₅	381.85±6.94^a	123.31±4.53^c	85.14±3.54^a	23.23±0.18^ab	10.95±0.69^bc	60.15±2.88^c
	平均Mean	357.66±12.27	137.40±3.74	80.61±2.34	23.78±0.82	11.65±0.53	77.43±3.87
N₃	D₁	291.70±9.25^d	133.34±5.40^a	72.25±1.10^c	22.76±0.33^c	8.84±0.20^c	70.70±4.98^a
	D₂	318.60±14.45^c	129.80±5.40^ab	72.90±0.52^bc	22.53±0.02^c	9.34±0.82^bc	72.57±3.71^a
	D₃	344.56±12.91^b	126.02±3.85^bc	73.42±0.73^bc	22.72±0.83^c	9.86±0.43^b	66.71±3.39^ab
	D₄	371.46±3.47^a	120.71±4.53^c	75.68±1.91^ab	28.83±1.43^a	12.94±1.01^a	60.68±2.93^b
	D₅	360.61±3.08^ab	112.44±3.96^d	76.89±0.35^a	25.32±1.45^b	10.25±0.31^b	49.38±1.95^c
	平均Mean	337.39±8.63	124.46±4.63	74.23±0.92	24.43±0.81	10.25±0.55	64.01±3.39
ANOVA检验F值F value of ANOVA
F	N	386.15^**	12.80^**	49.65^**	10.10^**	459.54^**	103.97^**
	D	65.23^**	40.36^**	27.71^**	5.83^**	20.01^**	51.74^**
	N×D	1.17	0.96	2.00	5.71^**	2.66^*	0.74

施氮量 N rate	密度 Density	食味值 Taste value	直链淀粉 Amylose (%)	蛋白质 Protein (%)	糙米率 Brown rice rate (%)	精米率 Milled rice rate (%)	长宽比 Aspect ratio
N₀	D₁	78.60±1.99^a	18.81±0.33^ab	7.31±0.22^a	80.83±1.63^a	66.43±0.93^bc	1.88±0.03^a
	D₂	77.80±31.81^a	18.30±0.36^c	7.25±0.13^a	81.07±1.44^a	66.67±1.39^abc	1.90±0.02^a
	D₃	78.76±1.96^a	19.26±0.43^a	7.11±0.16^a	81.22±1.35^a	67.41±0.99^abc	1.88±0.04^a
	D₄	77.89±0.93^a	19.11±0.33^ab	7.15±0.20^a	81.45±1.73^a	68.39±1.05^ab	1.93±0.05^a
	D₅	78.80±2.23^a	19.35±0.25^a	7.20±0.14^a	81.56±1.45^a	68.56±1.77^a	1.90±0.03^a
	平均Mean	78.37±1.78	18.96±0.34	7.20±0.17	81.22±1.52	67.49±1.23	1.90±0.03
N₁	D₁	77.72±2.08^a	18.75±0.28^ab	7.60±0.16^ab	81.64±1.10^a	68.96±2.28^b	1.90±0.05^b
	D₂	77.00±1.33^ab	18.65±0.46^ab	7.71±0.16^ab	81.64±1.73^a	69.19±1.48^b	1.99±0.05^a
	D₃	74.84±1.93^b	19.05±0.34^a	7.50±0.19^b	81.82±2.08^a	69.36±2.08^b	1.88±0.04^b
	D₄	76.67±1.90^ab	18.25±0.31^ab	7.80±0.14^a	82.02±1.68^a	71.13±0.91^ab	1.91±0.03^b
	D₅	76.93±1.15^ab	17.40±0.40^b	7.80±0.16^a	83.03±1.73^a	73.68±0.98^a	1.92±0.04^ab
	平均Mean	76.63±1.68	18.42±0.36	7.68±0.16	82.03±1.67	70.46±1.55	1.92±0.04
N₂	D₁	72.79±1.36^ab	16.30±0.17^a	8.36±0.25^ab	83.05±1.67^a	73.84±1.84^a	1.95±0.04^a
	D₂	74.17±1.61^a	15.80±0.33^a	8.20±0.17^b	83.07±1.66^a	73.91±0.89^a	1.93±0.03^ab
	D₃	73.11±1.56^ab	16.21±0.77^a	8.36±0.21^ab	83.91±1.65^a	73.94±1.80^a	1.88±0.04^b
	D₄	71.27±1.31^b	15.80±0.33^a	8.25±0.17^b	83.78±1.68^a	74.11±0.91^a	1.96±0.02^a
	D₅	72.45±1.35^ab	15.06±0.20^b	8.61±0.27^a	84.03±2.80^a	74.21±0.87^b	1.92±0.04^ab
	平均Mean	72.76±1.44	15.83±0.36	8.35±0.21	83.57±1.89	74.00±1.26	1.93±0.44
N₃	D₁	69.23±0.80^a	14.41±0.33^ab	9.25±0.29^ab	84.59±2.48^a	76.00±1.47^b	1.94±0.04^ab
	D₂	68.60±1.89^a	14.91±0.24^a	9.00±0.08^b	84.68±2.83^a	76.88±3.66^b	1.98±0.02^a
	D₃	69.34±1.12^a	14.05±0.34^b	9.56±0.23^a	86.39±1.95^a	76.90±1.82^b	1.93±0.04^ab
	D₄	68.66±1.19^a	14.20±0.25^ab	9.31±⁰.17^ab	87.17±1.94^a	77.73±2.46^ab	1.91±0.05^b
	D₅	67.72±1.02^a	14.51±0.24^ab	9.45±0.13^a	87.52±1.83^a	80.64±1.94^a	1.92±0.04^ab
	平均Mean	68.71±1.21	14.41±0.28	9.31±0.18	86.07±2.21	77.63±2.27	1.94±0.04
ANOVA检验F值
F	N	70.55^**	349.08^**	432.25^**	13.88^**	81.42^**	13.11^**
	D	0.44	3.06^*	1.37	0.89	3.53^*	2.25
	N×D	0.59	3.94^**	1.15	0.15	0.51	0.73

不同施氮量与栽插密度对水稻群体生长及产量构成的影响

Effects of Different Nitrogen Application Rates and Planting Densities on Population Growth and Yield Components of Rice

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