Effects of Planting Density and Row Spacing on Growth, Yield and Seed Quality of Brassica napus (Fengyou 10)

doi:10.11924/j.issn.1000-6850.casb2020-0695

Abstract

Abstract:

To explore the suitable planting density and row spacing of the hybrid rapeseed ‘Fengyou10’ in Huanghuai area, a field experiment was conducted in the main rapeseed producing areas in Henan Province to compare the variety’s phenophases, SPAD value of leaves, leaf area index at flowering stage, economic characters, and yield and quality in different planting densities and row spacing arrangements. The results showed that the growth period of ‘Fengyou10’ was gradually shortened with the increase of density and row spacing. The SPAD value of leaves decreased gradually with the increase of density and the decrease of trailing distance in the bolting stage and flowering stage. The LAI of the plant increased firstly and then decreased with the increase of the density in the flowering stage. Under the same density, the LAI was higher in the row spacing of 40 cm. The plant height, the number of primary effective branches, the length of main inflorescence and the number of siliques were gradually smaller with the increase in density, while the branch position was increased, and the effective number of siliques per plant was decreased with the decrease of the traveling distance. The 1000-grain weight was not affected by the density and the arrangement of row spacing. The grain yield and oil content increased firstly and then decreased with the increase of planting density. The grain yield was the highest under the planting density of 420000 plants/hm² and 40 cm row spacing, which was 2734.6 kg/hm². When the row spacing was reduced to 20 cm, the average grain yield decreased by 4.65%. The contents of erucic acid and glucosinolate in grains did not change with the changes of density and row spacing. Under the condition that other cultivation measures remain unchanged, it is suggested that the planting density of ‘Fengyou10’ should be controlled within the range of 345,000-495,000 plants/hm² and the row spacing should be set at 40 cm in Huanghuai area.

Key words: planting density, row spacing, Brassica napus (Fengyou 10), yield, seed quality

CLC Number:

Hu Kun, Wei Linnan, Zhang Shufen, Wang Jianping, Cao Jinhua, He Junping, Cai Dongfang, Wen Yancheng, Zhao Lei, Wang Dongguo, Liu Yizi, Zhu Jiacheng. Effects of Planting Density and Row Spacing on Growth, Yield and Seed Quality of Brassica napus (Fengyou 10)[J]. Chinese Agricultural Science Bulletin, 2021, 37(27): 39-44.

Figures/Tables 6

References 31

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行距	密度	播种期/（月/日）	初花期/（月/日）	成熟期/（月/日）
C₁	M₁	10/6	4/9	6/5
	M₂	10/6	4/8	6/4
	M₃	10/6	4/8	6/3
	M₄	10/6	4/8	6/3
	M₅	10/6	4/7	6/2
	M₆	10/6	4/8	6/2
	M₇	10/6	4/7	6/1
C₂	M₄	10/6	4/7	5/30
	M₅	10/6	4/7	5/30
	M₆	10/6	4/6	5/29
	M₇	10/6	4/6	5/28

行距	密度	播种期/（月/日）	初花期/（月/日）	成熟期/（月/日）
C₁	M₁	10/6	4/9	6/5
	M₂	10/6	4/8	6/4
	M₃	10/6	4/8	6/3
	M₄	10/6	4/8	6/3
	M₅	10/6	4/7	6/2
	M₆	10/6	4/8	6/2
	M₇	10/6	4/7	6/1
C₂	M₄	10/6	4/7	5/30
	M₅	10/6	4/7	5/30
	M₆	10/6	4/6	5/29
	M₇	10/6	4/6	5/28

行距	密度	苗期	蕾薹期	开花期	开花期LAI
C₁	M₁	50.2	49.8	57.9	2.81h
	M₂	51.2	48.2	57.1	3.10g
	M₃	49.7	47.3	56.6	3.43f
	M₄	50.4	45.7	55.7	3.62def
	M₅	49.6	45.0	55.2	4.16a
	M₆	49.2	43.7	53.6	4.04ab
	M₇	50.2	43.2	52.9	3.78cd
C₂	M₄	49.9	45.3	54.8	3.54ef
	M₅	50.5	44.6	54.6	3.96bc
	M₆	51.1	43.5	52.8	3.73de
	M₇	49.8	42.8	51.7	3.51f

行距	密度	苗期	蕾薹期	开花期	开花期LAI
C₁	M₁	50.2	49.8	57.9	2.81h
	M₂	51.2	48.2	57.1	3.10g
	M₃	49.7	47.3	56.6	3.43f
	M₄	50.4	45.7	55.7	3.62def
	M₅	49.6	45.0	55.2	4.16a
	M₆	49.2	43.7	53.6	4.04ab
	M₇	50.2	43.2	52.9	3.78cd
C₂	M₄	49.9	45.3	54.8	3.54ef
	M₅	50.5	44.6	54.6	3.96bc
	M₆	51.1	43.5	52.8	3.73de
	M₇	49.8	42.8	51.7	3.51f

行距	密度	株高/cm	分枝部位/cm	一次有效分枝个数/个	主花序		角长/cm	单株角果数/个	角粒数/个	千粒重/g
行距	密度	株高/cm	分枝部位/cm	一次有效分枝个数/个	长度/cm	角果数/个	角长/cm	单株角果数/个	角粒数/个	千粒重/g
C₁	M₁	163.73	20.80	8.80	52.27	51.80	8.30	276.80	21.79	3.07
	M₂	161.62	25.73	8.53	51.00	50.40	6.98	260.20	20.83	3.05
	M₃	160.67	33.47	7.73	50.20	49.93	7.48	241.60	20.27	3.06
	M₄	157.07	36.73	7.60	48.07	48.71	7.00	214.73	20.25	3.03
	M₅	153.73	38.26	7.47	47.53	45.73	6.93	191.60	19.95	3.02
	M₆	151.93	40.47	7.40	47.42	45.27	7.38	172.93	18.52	2.96
	M₇	149.00	42.27	6.73	46.27	45.13	7.07	149.93	17.68	2.97
C₂	M₄	155.93	38.73	7.13	47.13	46.80	7.29	196.27	20.48	3.01
	M₅	150.73	41.87	7.04	46.57	44.87	7.09	178.33	19.55	3.03
	M₆	148.07	43.47	6.87	45.53	43.40	7.70	152.40	19.08	2.95
	M₇	146.17	45.13	6.20	43.73	42.07	7.91	137.47	18.69	2.98