Effects of shading on agronomic characters, yield and nitrogen metabolism of 10 vegetable soybean varieties

doi:10.3969/j.issn.1004-1524.2023.04.01

Acta Agriculturae Zhejiangensis ›› 2023, Vol. 35 ›› Issue (4): 729-735.DOI: 10.3969/j.issn.1004-1524.2023.04.01

• Crop Science • Previous Articles Next Articles

Effects of shading on agronomic characters, yield and nitrogen metabolism of 10 vegetable soybean varieties

TAN Shuxia¹^,²(), ZHAO Taodi¹, YANG Hao¹, NING Kejun¹, LIU Li¹, HE Qingyuan¹, HUANG Shoucheng¹, SHU Yingjie¹^,^*()

1. College of Agriculture, Anhui Science and Technology University, Fengyang 233100, Anhui, China
2. Bureau of Rural Revitalization of Shitai County, Shitai 245100, Anhui, China

Received:2022-02-13 Online:2023-04-25 Published:2023-05-05

Abstract

Abstract:

In order to screen out suitable vegetable soybean varieties for intercropping with high stem crops, 10 vegetable soybean varieties were selected as test materials. The effects of 50% shading at either four leaf stage or early flowering stage on agronomic characters, yield and root nitrate nitrogen ( $NO 3 -$ -N) content and nitrate reductase (NR) activity were explored. Besides, the shade tolerance of 10 vegetable soybean varieties were determined via comprehensive membership function method. The results showed that, the plant height, pod setting height, branch height and root $NO 3 -$ -N content of some vegetable soybean varieties were significantly (P<0.05) increased, yet the yield and NR activity were significantly decreased under 50% shading. Based on the constructed comprehensive membership function value, it was found that Huaixian17-08, Kaixian No. 3, Huaixiandou No. 5 and Cuilyuyu had stronger shade tolerance, and were suitable for intercropping with high stem crops.

Key words: vegetable soybean, shade tolerance, agronomic traits, yield, nitrogen metabolism

CLC Number:

S565.1

TAN Shuxia, ZHAO Taodi, YANG Hao, NING Kejun, LIU Li, HE Qingyuan, HUANG Shoucheng, SHU Yingjie. Effects of shading on agronomic characters, yield and nitrogen metabolism of 10 vegetable soybean varieties[J]. Acta Agriculturae Zhejiangensis, 2023, 35(4): 729-735.

Figures/Tables 4

Table 1 Effects of different treatments on agronomic characters of vegetable soybean variaties

品种 Varieties	处理 Treatment	株高 Plant height/cm	主茎节数 Node number of main stem	结荚高度 Pod setting height/cm	分枝高度 Branch height/cm
翠绿玉	CK	39.20±1.42 b	7.30±0.28 a	7.11±1.29 b	6.10±0.48 a
Cuilyuyu	V	47.30±1.27 a	6.90±0.14 a	8.71±0.44 a	6.89±1.29 a
	R	45.10±3.82 a	7.10±0.14 a	8.10±0.27 a	6.31±0.01 a
淮鲜豆5号	CK	48.10±2.12 b	7.90±0.14 a	7.46±1.07 c	5.62±2.29 b
Huaixiandou No. 5	V	61.70±7.50 a	7.70±0.14 a	9.50±2.18 a	7.38±0.96 a
	R	49.00±4.53 b	7.80±0.28 a	8.59±0.01 b	5.61±0.66 b
淮鲜17-08	CK	42.80±0.85 b	6.80±0.00 a	5.81±2.11 b	4.13±1.57 a
Huaixian17-08	V	52.80±5.37 a	6.30±0.14 a	7.26±1.07 a	4.81±0.27 a
	R	45.80±4.53 ab	6.45±0.64 a	6.97±0.86 a	4.50±0.79 a
辽鲜1号	CK	40.40±1.41 a	6.85±0.35 a	5.79±0.44 b	4.84±0.74 b
Liaoxian No. 1	V	48.90±2.12 a	6.60±0.57 a	8.71±2.67 a	6.15±3.38 a
	R	48.60±0.28 a	6.80±0.85 a	8.31±1.82 a	5.91±1.63 ab
沪宁95-1	CK	44.60±5.37 b	7.50±0.14 a	6.83±2.73 b	5.35±1.97 b
Huning95-1	V	53.90±1.27 a	7.30±0.14 a	8.53±1.51 a	7.07±0.89 a
	R	50.20±3.96 ab	7.25±0.07 a	8.33±2.36 a	6.97±0.27 a
绿宝石	CK	70.80±2.26 b	9.70±0.71 a	8.07±1.32 b	6.44±0.76 b
Lyubaoshi	V	85.20±8.77 a	9.50±0.71 a	11.01±1.74 a	8.59±1.48 a
	R	71.50±2.97 b	9.60±0.85 a	8.56±0.48 b	7.69±0.78 a
开鲜3号	CK	40.50±0.99 b	7.00±0.85 a	7.36±1.61 a	5.09±1.34 a
Kaixian No. 3	V	47.40±1.98 a	6.60±0.00 a	7.91±0.04 a	5.51±0.16 a
	R	44.00±4.24 ab	6.80±1.13 a	7.52±0.03 a	5.36±0.88 a
日本青	CK	43.40±6.22 b	8.00±0.28 a	6.54±1.50 b	4.89±0.95 b
Ribenqing	V	53.80±5.09 a	7.70±0.14 a	9.12±0.99 a	8.34±1.36 a
	R	49.40±1.41 ab	7.90±0.42 a	6.88±0.31 b	7.88±1.36 a
SP-16	CK	101.00±3.11 b	12.10±0.14 a	9.54±0.45 b	10.25±2.14 c
	V	135.80±1.70 a	11.80±1.41 a	10.71±3.15 a	16.51±5.98 a
	R	129.10±5.23 a	12.00±0.28 a	10.09±3.58 ab	12.11±0.69 b
台湾292	CK	48.60±7.35 b	9.00±0.57 a	7.62±2.21 c	6.89±0.95 b
Taiwan292	V	63.80±0.28 a	8.20±0.00 a	10.67±0.18 a	9.52±0.13 a
	R	60.70±6.36 a	8.80±0.28 a	9.33±1.77 b	9.34±1.02 a

Table 1 Effects of different treatments on agronomic characters of vegetable soybean variaties

品种 Varieties	处理 Treatment	株高 Plant height/cm	主茎节数 Node number of main stem	结荚高度 Pod setting height/cm	分枝高度 Branch height/cm
翠绿玉	CK	39.20±1.42 b	7.30±0.28 a	7.11±1.29 b	6.10±0.48 a
Cuilyuyu	V	47.30±1.27 a	6.90±0.14 a	8.71±0.44 a	6.89±1.29 a
	R	45.10±3.82 a	7.10±0.14 a	8.10±0.27 a	6.31±0.01 a
淮鲜豆5号	CK	48.10±2.12 b	7.90±0.14 a	7.46±1.07 c	5.62±2.29 b
Huaixiandou No. 5	V	61.70±7.50 a	7.70±0.14 a	9.50±2.18 a	7.38±0.96 a
	R	49.00±4.53 b	7.80±0.28 a	8.59±0.01 b	5.61±0.66 b
淮鲜17-08	CK	42.80±0.85 b	6.80±0.00 a	5.81±2.11 b	4.13±1.57 a
Huaixian17-08	V	52.80±5.37 a	6.30±0.14 a	7.26±1.07 a	4.81±0.27 a
	R	45.80±4.53 ab	6.45±0.64 a	6.97±0.86 a	4.50±0.79 a
辽鲜1号	CK	40.40±1.41 a	6.85±0.35 a	5.79±0.44 b	4.84±0.74 b
Liaoxian No. 1	V	48.90±2.12 a	6.60±0.57 a	8.71±2.67 a	6.15±3.38 a
	R	48.60±0.28 a	6.80±0.85 a	8.31±1.82 a	5.91±1.63 ab
沪宁95-1	CK	44.60±5.37 b	7.50±0.14 a	6.83±2.73 b	5.35±1.97 b
Huning95-1	V	53.90±1.27 a	7.30±0.14 a	8.53±1.51 a	7.07±0.89 a
	R	50.20±3.96 ab	7.25±0.07 a	8.33±2.36 a	6.97±0.27 a
绿宝石	CK	70.80±2.26 b	9.70±0.71 a	8.07±1.32 b	6.44±0.76 b
Lyubaoshi	V	85.20±8.77 a	9.50±0.71 a	11.01±1.74 a	8.59±1.48 a
	R	71.50±2.97 b	9.60±0.85 a	8.56±0.48 b	7.69±0.78 a
开鲜3号	CK	40.50±0.99 b	7.00±0.85 a	7.36±1.61 a	5.09±1.34 a
Kaixian No. 3	V	47.40±1.98 a	6.60±0.00 a	7.91±0.04 a	5.51±0.16 a
	R	44.00±4.24 ab	6.80±1.13 a	7.52±0.03 a	5.36±0.88 a
日本青	CK	43.40±6.22 b	8.00±0.28 a	6.54±1.50 b	4.89±0.95 b
Ribenqing	V	53.80±5.09 a	7.70±0.14 a	9.12±0.99 a	8.34±1.36 a
	R	49.40±1.41 ab	7.90±0.42 a	6.88±0.31 b	7.88±1.36 a
SP-16	CK	101.00±3.11 b	12.10±0.14 a	9.54±0.45 b	10.25±2.14 c
	V	135.80±1.70 a	11.80±1.41 a	10.71±3.15 a	16.51±5.98 a
	R	129.10±5.23 a	12.00±0.28 a	10.09±3.58 ab	12.11±0.69 b
台湾292	CK	48.60±7.35 b	9.00±0.57 a	7.62±2.21 c	6.89±0.95 b
Taiwan292	V	63.80±0.28 a	8.20±0.00 a	10.67±0.18 a	9.52±0.13 a
	R	60.70±6.36 a	8.80±0.28 a	9.33±1.77 b	9.34±1.02 a

Table 2 Effect of different treatments on yield traits of vegetable soybean varieties

品种 Variety	处理 Treatment	单株荚数 Pods per plant	单株鲜荚重 Fresh pod weight per plant/g	有效荚数 Number of effective pods	单株粒数 Number of seeds per plant	百粒鲜重 Fresh weight of 100 grains/g	小区鲜荚重 Fresh pod weight per plot/kg
翠绿玉	CK	12.60±1.70 a	22.29±2.38 a	12.30±0.71 a	26.70±0.42 a	78.93±0.44 a	1.61±0.06 a
Cuilyuyu	V	9.60±0.85 b	16.80±1.34 b	8.80±0.85 b	18.50±2.97 b	70.90±2.14 b	1.06±0.04 c
	R	11.40±0.85 ab	20.79±0.75 a	10.80±0.28 ab	21.30±0.71 b	75.98±1.18 a	1.34±0.19 b
淮鲜豆5号	CK	17.60±1.41 a	34.25±1.63 a	17.00±1.41 a	36.40±2.83 a	92.00±1.38 a	2.49±0.04 a
Huaixiandou No.5	V	10.30±0.71 b	24.39±0.56 c	8.80±0.28 c	18.50±0.14 c	86.72±0.21 b	1.20±0.01 c
	R	15.60±0.01 a	28.48±1.74 b	14.00±0.85 b	28.10±0.99 b	91.93±3.85 a	1.69±0.08 b
淮鲜17-08	CK	14.40±1.41 a	26.84±0.90 a	13.20±1.41 a	24.70±1.56 a	90.36±0.51 a	1.69±0.03 a
Huaixian17-08	V	11.20±0.28 b	25.78±0.68 a	10.40±0.28 b	19.00±1.13 b	71.68±0.53 b	1.12±0.06 b
	R	11.30±0.49 b	25.90±1.38 a	10.60±0.28 ab	19.30±0.99 b	89.18±0.83 a	1.27±0.10 b
辽鲜1号	CK	18.30±0.99 a	35.30±2.71 a	17.70±0.99 a	36.30±3.25 a	80.82±3.26 a	1.97±0.20 a
Liaoxian No.1	V	12.80±1.41 b	24.15±1.73 b	12.20±0.85 b	23.50±2.12 b	68.17±2.14 b	1.23±0.02 c
	R	13.20±0.92 b	24.95±2.00 b	12.40±0.78 b	23.80±2.26 b	78.77±0.41 a	1.55±0.01 b
沪宁95-1	CK	18.30±1.84 a	28.69±1.09 a	16.20±2.55 a	30.60±2.26 a	90.79±0.09 a	2.28±0.08 a
Huning95-1	V	14.40±1.70 b	22.51±0.36 b	10.70±0.99 b	18.90±1.27 b	78.32±2.57 b	1.07±0.17 c
	R	14.60±0.28 b	25.12±0.03 ab	14.10±0.42 a	21.80±0.28 b	88.77±1.70 a	1.45±0.13 b
绿宝石	CK	22.10±0.42 a	50.14±2.45 a	21.10±1.27 a	46.20±1.70 a	78.42±3.98 a	2.47±0.10 a
Lyubaoshi	V	18.10±0.42 b	37.90±1.00 b	18.10±0.42 b	37.30±0.71 c	62.90±0.63 b	1.13±0.14 b
	R	18.80±0.57 b	36.55±4.16 b	18.30±2.12 b	38.10±2.12 b	77.34±3.10 a	1.17±0.03 b
开鲜3号	CK	18.40±3.11 a	32.71±2.00 a	17.10±0.42 a	36.70±1.56 a	85.80±0.97 a	1.78±0.10 a
Kaixian No.3	V	12.80±0.28 b	24.50±0.84 b	11.40±1.98 b	21.10±1.56 b	72.86±0.64 b	1.14±0.02 c
	R	14.60±1.41 b	25.78±2.90 b	12.90±1.27 b	26.60±0.85 b	83.43±0.67 a	1.44±0.07 b
日本青	CK	18.90±0.71 a	31.69±2.10 a	18.10±1.27 a	33.50±0.99 a	87.47±1.82 a	1.81±0.05 a
Ribenqing	V	11.70±0.42 b	20.16±1.65 c	10.30±1.27 c	19.40±5.66 b	81.57±1.18 b	1.18±0.09 b
	R	16.30±2.40 a	27.15±3.61 b	14.00±2.55 b	22.40±3.39 b	85.85±1.01 a	1.27±0.02 b
SP-16	CK	33.50±1.84 a	90.59±2.25 a	29.00±2.26 a	62.20±0.57 a	93.74±3.42 a	3.41±0.27 a
	V	12.80±1.13 c	17.84±0.62 c	9.00±0.57 c	17.10±1.84 c	71.82±1.31 b	0.69±0.01 c
	R	15.90±2.12 b	33.24±0.31 b	13.20±2.55 b	25.90±5.52 b	88.09±0.80 a	1.64±0.10 b
台湾292	CK	17.40±0.28 a	27.05±1.47 a	14.60±0.85 a	24.60±0.28 a	90.03±0.20 a	1.98±0.04 a
Taiwan292	V	10.40±0.57 c	21.94±0.60 b	8.50±0.14 b	18.10±0.42 b	80.59±0.82 b	1.10±0.02 c
	R	13.90±0.42 b	25.71±1.51 ab	12.10±0.99 a	21.80±0.57 ab	90.42±2.97 a	1.53±0.14 b

Table 2 Effect of different treatments on yield traits of vegetable soybean varieties

品种 Variety	处理 Treatment	单株荚数 Pods per plant	单株鲜荚重 Fresh pod weight per plant/g	有效荚数 Number of effective pods	单株粒数 Number of seeds per plant	百粒鲜重 Fresh weight of 100 grains/g	小区鲜荚重 Fresh pod weight per plot/kg
翠绿玉	CK	12.60±1.70 a	22.29±2.38 a	12.30±0.71 a	26.70±0.42 a	78.93±0.44 a	1.61±0.06 a
Cuilyuyu	V	9.60±0.85 b	16.80±1.34 b	8.80±0.85 b	18.50±2.97 b	70.90±2.14 b	1.06±0.04 c
	R	11.40±0.85 ab	20.79±0.75 a	10.80±0.28 ab	21.30±0.71 b	75.98±1.18 a	1.34±0.19 b
淮鲜豆5号	CK	17.60±1.41 a	34.25±1.63 a	17.00±1.41 a	36.40±2.83 a	92.00±1.38 a	2.49±0.04 a
Huaixiandou No.5	V	10.30±0.71 b	24.39±0.56 c	8.80±0.28 c	18.50±0.14 c	86.72±0.21 b	1.20±0.01 c
	R	15.60±0.01 a	28.48±1.74 b	14.00±0.85 b	28.10±0.99 b	91.93±3.85 a	1.69±0.08 b
淮鲜17-08	CK	14.40±1.41 a	26.84±0.90 a	13.20±1.41 a	24.70±1.56 a	90.36±0.51 a	1.69±0.03 a
Huaixian17-08	V	11.20±0.28 b	25.78±0.68 a	10.40±0.28 b	19.00±1.13 b	71.68±0.53 b	1.12±0.06 b
	R	11.30±0.49 b	25.90±1.38 a	10.60±0.28 ab	19.30±0.99 b	89.18±0.83 a	1.27±0.10 b
辽鲜1号	CK	18.30±0.99 a	35.30±2.71 a	17.70±0.99 a	36.30±3.25 a	80.82±3.26 a	1.97±0.20 a
Liaoxian No.1	V	12.80±1.41 b	24.15±1.73 b	12.20±0.85 b	23.50±2.12 b	68.17±2.14 b	1.23±0.02 c
	R	13.20±0.92 b	24.95±2.00 b	12.40±0.78 b	23.80±2.26 b	78.77±0.41 a	1.55±0.01 b
沪宁95-1	CK	18.30±1.84 a	28.69±1.09 a	16.20±2.55 a	30.60±2.26 a	90.79±0.09 a	2.28±0.08 a
Huning95-1	V	14.40±1.70 b	22.51±0.36 b	10.70±0.99 b	18.90±1.27 b	78.32±2.57 b	1.07±0.17 c
	R	14.60±0.28 b	25.12±0.03 ab	14.10±0.42 a	21.80±0.28 b	88.77±1.70 a	1.45±0.13 b
绿宝石	CK	22.10±0.42 a	50.14±2.45 a	21.10±1.27 a	46.20±1.70 a	78.42±3.98 a	2.47±0.10 a
Lyubaoshi	V	18.10±0.42 b	37.90±1.00 b	18.10±0.42 b	37.30±0.71 c	62.90±0.63 b	1.13±0.14 b
	R	18.80±0.57 b	36.55±4.16 b	18.30±2.12 b	38.10±2.12 b	77.34±3.10 a	1.17±0.03 b
开鲜3号	CK	18.40±3.11 a	32.71±2.00 a	17.10±0.42 a	36.70±1.56 a	85.80±0.97 a	1.78±0.10 a
Kaixian No.3	V	12.80±0.28 b	24.50±0.84 b	11.40±1.98 b	21.10±1.56 b	72.86±0.64 b	1.14±0.02 c
	R	14.60±1.41 b	25.78±2.90 b	12.90±1.27 b	26.60±0.85 b	83.43±0.67 a	1.44±0.07 b
日本青	CK	18.90±0.71 a	31.69±2.10 a	18.10±1.27 a	33.50±0.99 a	87.47±1.82 a	1.81±0.05 a
Ribenqing	V	11.70±0.42 b	20.16±1.65 c	10.30±1.27 c	19.40±5.66 b	81.57±1.18 b	1.18±0.09 b
	R	16.30±2.40 a	27.15±3.61 b	14.00±2.55 b	22.40±3.39 b	85.85±1.01 a	1.27±0.02 b
SP-16	CK	33.50±1.84 a	90.59±2.25 a	29.00±2.26 a	62.20±0.57 a	93.74±3.42 a	3.41±0.27 a
	V	12.80±1.13 c	17.84±0.62 c	9.00±0.57 c	17.10±1.84 c	71.82±1.31 b	0.69±0.01 c
	R	15.90±2.12 b	33.24±0.31 b	13.20±2.55 b	25.90±5.52 b	88.09±0.80 a	1.64±0.10 b
台湾292	CK	17.40±0.28 a	27.05±1.47 a	14.60±0.85 a	24.60±0.28 a	90.03±0.20 a	1.98±0.04 a
Taiwan292	V	10.40±0.57 c	21.94±0.60 b	8.50±0.14 b	18.10±0.42 b	80.59±0.82 b	1.10±0.02 c
	R	13.90±0.42 b	25.71±1.51 ab	12.10±0.99 a	21.80±0.57 ab	90.42±2.97 a	1.53±0.14 b

Table 3 Effects of different treatments on root nitrogen metabolism of vegetable soybean varieties

品种 Variety	处理 Treatment	硝态氮含量 $NO 3 -$ -N content/ (μg·g^-1)	硝酸还原酶活性 Nitrate reductase activity/(U·g^-1)
翠绿玉	CK	147.44±22.12 b	20.88±2.75 a
Cuilyuyu	V	152.56±1.81 b	9.67±1.53 b
	R	180.26±8.34 a	10.30±1.17 a
淮鲜豆5号	CK	181.03±3.63 a	12.68±0.38 a
Huaixiandou No.5	V	187.69±5.80 a	10.29±3.26 a
	R	195.38±2.18 a	12.74±1.16 a
淮鲜17-08	CK	150.51±17.77 b	11.83±0.44 a
Huaixian17-08	V	163.08±12.33 b	8.70±3.18 a
	R	186.41±2.54 a	9.32±2.43 a
辽鲜1号	CK	94.36±3.63 b	18.85±0.21 a
Liaoxian No.1	V	227.95±7.61 a	6.52±0.30 c
	R	232.31±2.18 a	14.43±0.48 b
沪宁95-1	CK	225.13±2.90 b	13.07±0.04 a
Huning95-1	V	263.08±1.45 a	3.44±0.39 b
	R	268.46±1.09 a	12.46±0.44 a
绿宝石	CK	138.21±2.54 b	9.27±1.47 a
Lyubaoshi	V	237.44±1.09 a	3.04±0.78 b
	R	240.77±5.08 a	4.22±1.64 b
开鲜3号	CK	134.62±6.16 c	12.84±0.10 a
Kaixian No.3	V	157.44±2.18 b	7.57±1.50 b
	R	219.23±14.87 a	11.58±0.18 a
日本青	CK	152.05±11.97 b	12.90±1.29 a
Ribenqing	V	157.18±13.42 b	11.81±1.06 a
	R	221.28±5.44 a	11.80±0.97 a
SP-16	CK	162.31±9.07 c	10.92±2.44 a
	V	230.77±3.63 b	6.88±1.09 b
	R	333.08±36.62 a	9.99±2.43 ab
台湾292	CK	97.95±2.18 c	15.80±1.17 a
Taiwan292	V	173.59±1.09 b	11.42±2.79 b
	R	265.13±1.45 a	10.28±0.21 b

Table 3 Effects of different treatments on root nitrogen metabolism of vegetable soybean varieties

品种 Variety	处理 Treatment	硝态氮含量 $NO 3 -$ -N content/ (μg·g^-1)	硝酸还原酶活性 Nitrate reductase activity/(U·g^-1)
翠绿玉	CK	147.44±22.12 b	20.88±2.75 a
Cuilyuyu	V	152.56±1.81 b	9.67±1.53 b
	R	180.26±8.34 a	10.30±1.17 a
淮鲜豆5号	CK	181.03±3.63 a	12.68±0.38 a
Huaixiandou No.5	V	187.69±5.80 a	10.29±3.26 a
	R	195.38±2.18 a	12.74±1.16 a
淮鲜17-08	CK	150.51±17.77 b	11.83±0.44 a
Huaixian17-08	V	163.08±12.33 b	8.70±3.18 a
	R	186.41±2.54 a	9.32±2.43 a
辽鲜1号	CK	94.36±3.63 b	18.85±0.21 a
Liaoxian No.1	V	227.95±7.61 a	6.52±0.30 c
	R	232.31±2.18 a	14.43±0.48 b
沪宁95-1	CK	225.13±2.90 b	13.07±0.04 a
Huning95-1	V	263.08±1.45 a	3.44±0.39 b
	R	268.46±1.09 a	12.46±0.44 a
绿宝石	CK	138.21±2.54 b	9.27±1.47 a
Lyubaoshi	V	237.44±1.09 a	3.04±0.78 b
	R	240.77±5.08 a	4.22±1.64 b
开鲜3号	CK	134.62±6.16 c	12.84±0.10 a
Kaixian No.3	V	157.44±2.18 b	7.57±1.50 b
	R	219.23±14.87 a	11.58±0.18 a
日本青	CK	152.05±11.97 b	12.90±1.29 a
Ribenqing	V	157.18±13.42 b	11.81±1.06 a
	R	221.28±5.44 a	11.80±0.97 a
SP-16	CK	162.31±9.07 c	10.92±2.44 a
	V	230.77±3.63 b	6.88±1.09 b
	R	333.08±36.62 a	9.99±2.43 ab
台湾292	CK	97.95±2.18 c	15.80±1.17 a
Taiwan292	V	173.59±1.09 b	11.42±2.79 b
	R	265.13±1.45 a	10.28±0.21 b

Table 4 Comprehensive membership function values of ten vegetable soybean varieties

品种 Variety	R₁	R₂	R₃	R₄	R₅	R₆	R₇	R₈	R₉	R₁₀	R₁₁	R₁₂	R	排名 Rank
淮鲜17-08 Huaixian17-08	0.99	0.74	0.60	0.95	0.96	0.94	1.00	0.99	0.98	1.00	0.89	0.82	10.85	1
开鲜3号 Kaixian No. 3	1.00	0.86	1.00	1.00	0.89	0.85	0.90	0.84	0.77	0.96	0.66	0.78	10.50	2
淮鲜豆5号 Huaixiandou No. 5	0.96	1.00	0.48	0.86	1.00	0.85	0.89	0.80	0.77	0.65	1.00	0.99	10.25	3
翠绿玉 Cuilyuyu	0.97	0.86	0.60	0.96	0.87	1.00	0.96	1.00	0.94	1.00	0.93	0.00	10.10	4
日本青 Ribenqing	0.92	0.95	0.53	0.23	0.72	0.84	0.89	0.78	0.78	0.91	0.79	1.00	9.33	5
沪宁95-1 Huning95-1	0.95	0.93	0.47	0.64	0.36	0.90	0.94	0.92	0.84	0.67	0.76	0.59	8.98	6
绿宝石 Lyubaoshi	0.95	1.00	0.43	0.64	0.58	0.91	0.81	0.97	0.89	0.51	0.28	0.54	8.50	7
辽鲜1号 Liaoxian No. 1	0.91	1.00	0.00	0.77	0.92	0.81	0.85	0.94	0.78	0.91	0.00	0.26	8.15	8
台湾292 Taiwan292	0.70	0.67	0.14	0.41	0.75	0.82	0.97	0.88	1.00	0.86	0.11	0.61	7.92	9
SP-16	0	0	0.79	0	0	0	0	0	0	0	0.13	0.86	1.78	10

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Effects of shading on agronomic characters, yield and nitrogen metabolism of 10 vegetable soybean varieties

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