种间距对不同结瘤特性套作大豆物质积累、 鼓粒及产量形成的影响

doi:10.3864/j.issn.0578-1752.2019.21.004

Abstract

Abstract:

【Objective】 Intercropping is an important way to increase the efficient utilization of resources and to solve the contradiction between grain supply and demand. Under intercropping system, crop symbiosis is influenced by interspecific interaction intensity between the species. In this study, maize-soybean intercropping system was used to investigate the effects of strength of root interaction between maize and soybean on the dry matter accumulation and yield formation of different nodule characteristic soybeans, so as to analyze variation trend dry matter accumulation and yield formation of soybean. 【Method】 Field experiments were carried out for two consecutive years from 2016 to 2017 with randomized complete block factorial design: factor A was different row spacing between maize and soybean, intercropped soybean followed by different row spacing (A2: 30 cm, A3: 45 cm, A4: 60 cm, A5: 75 cm); factor B was three soybean varieties (Gongxuan 1: Weak nodulation, Guixia 3: Moderate nodulation, Nandou 25: Strong nodulation).【Result】 The row spacing between soybean and maize had a significant effect on the biomass accumulation and distribution of soybean with different nodulation. Under monoculture, dry matter accumulation of soybean was significantly higher than that of intercropping, and reached the highest at R4 (full pod stage). The dry matter accumulation of intercropping soybean reached the highest at R5 stage, and was gradually higher than monoculture. Soybean had a highest amount of biomass accumulation when the row spacing was 45 cm and 60 cm. In intercropping, each variety had the longest grain filling time under A4, and the maximum grain filling rate, 100-seeds weight and yield were achieved under A4. Interestingly, there was no significant difference between monoculture and intercropping yield. Nandou 25 had the strongest grain filling capacity under all row spacing. Under A4, the average yield of Nandou 25 was 5.435% and 6.3% higher than that of Guixia 3 and Gongxuan 1, respectively. 【Conclusion】 Nandou 25 with strong nodulation could adapt to the intercropping environment well, and showed the best performance at 60 cm. It could promote dry matter accumulation and stabilize the yield through increasing grain filling rate and 100-seeds weight in intercropping. Furthermore, it could be useful to achieve the goal of stable and optimal yield in intercropping and monoculture.

Key words: maize-soybean relay strip intercropping, row spacing, nodular varieties, dry matter accumulation, yield

PANG Ting,CHEN Ping,YUAN XiaoTing,LEI Lu,DU Qing,FU ZhiDan,ZHANG XiaoNa,ZHOU Ying,REN JianRui,WANG Tian,WANG Jin,YANG WenYu,YONG TaiWen. Effects of Row Spacing on Dry Matter Accumulation, Grain Filling and Yield Formation of Different Nodulation Characteristic Soybeans in Intercropping[J].Scientia Agricultura Sinica, 2019, 52(21): 3751-3762.

Figures/Tables 9

Table 1

Fig. 1

Table 2

Table 3

Table 4

Table 5

Fig. 2

Table 6

The dry matter distribution rate of different vegetative organs in soybean under different treatments (%)"

年份 Year	处理Treatment	V5			R2			R5				R8
年份 Year	处理Treatment	根 Root	茎 Steam	叶 Leaf	根 Root	茎 Steam	叶 Leaf	根 Root	茎 Steam	叶 Leaf	荚 Pod	根 Root	茎 Steam	叶 Leaf	荚 Pod
2016	A1B1	14.86a	36.53a	49.61a	12.68b	41.83ab	45.48a	12.26b	27.35a	32.83a	27.56b	18.60a	38.49a	3.12c	39.79b
	A2B1	15.41a	36.29a	48.30a	14.33a	41.49ab	44.18a	13.48a	26.41ab	31.05ab	29.06a	16.59 ab	30.36b	9.97a	43.08a
	A3B1	14.78a	35.59a	49.62a	14.27a	40.51b	45.22a	13.36a	25.64b	31.60ab	29.41a	15.02b	33.28b	6.02b	45.68a
	A4B1	15.35a	37.39a	47.25a	13.68a	42.92a	43.40a	12.69a	26.92ab	30.07b	30.32a	14.28b	37.28a	5.63b	42.81a
	平均Mean	15.10a	36.45a	48.70a	13.74a	41.69ab	44.60a	12.95a	26.58a	31.39ab	29.09a	16.12 ab	34.85b	6.18b	42.84a
	A1B2	14.21a	31.08c	54.71a	12.15b	36.48b	51.37a	11.67b	23.74b	36.96a	27.63c	13.85a	45.80a	4.61a	35.74c
	A2B2	15.24a	38.48a	46.27b	14.30a	43.66a	42.03b	13.20a	27.24a	28.97b	30.59ab	13.41a	37.98a	6.80a	41.81c
	A3B2	17.47a	35.68b	46.85b	14.30a	41.79a	43.91b	13.27a	26.21b	30.41b	30.11b	15.51a	30.71b	4.99a	48.78b
	A4B2	16.04a	36.42ab	47.54b	14.30a	41.96a	43.83b	12.84a	25.63b	29.58b	31.95a	12.96a	29.17c	5.39a	52.48a
	平均Mean	15.74a	35.41b	48.84a	13.74b	40.97a	45.29a	12.75a	25.71b	31.48a	30.07b	13.98a	35.92a	5.45a	44.70b
	A1B3	19.75ab	34.61ab	45.63 bc	14.42a	41.69ab	43.89ab	13.27b	25.94a	30.19a	30.60b	11.16b	46.74a	4.60b	37.50b
	A2B3	17.10b	33.05b	49.85a	15.44a	38.29c	46.27a	14.38a	24.12b	32.18a	29.32b	16.77a	30.12b	7.37a	45.74b
	A3B3	17.74ab	34.85ab	47.41 ab	14.36a	40.99b	44.64a	13.31b	25.69a	30.91a	30.09b	16.10a	22.36b	6.90ab	54.64ab
	A4B3	20.81a	36.01a	43.18c	14.36a	43.62a	41.85b	12.80b	25.95a	27.50b	33.76a	14.20ab	23.87b	5.19ab	56.74a
	平均Mean	18.85ab	34.63ab	46.52b	14.69a	41.15ab	44.16a	12.80b	25.42a	30.19a	30.94b	14.56ab	30.77b	6.01ab	48.65b
2017	A1B1	22.82a	34.87b	42.31 bc	24.14a	39.64b	36.22ab	8.87a	43.70a	21.29a	26.14a	10.57b	25.42a	15.25b	48.76a
	A2B1	16.21b	37.60ab	46.19a	21.58ab	45.33ab	33.09ab	7.42a	36.87a	27.15a	28.55a	7.69c	26.85a	26.02a	39.44b
	A3B1	15.11b	40.20a	44.69abc	17.16b	47.66a	35.18ab	8.60a	37.57a	23.41a	30.42a	8.31bc	24.02a	15.47b	52.19a
	A4B1	21.70a	36.49b	41.81c	26.55a	41.25ab	32.20b	7.89a	40.69a	24.07a	27.35a	8.69bc	28.68a	23.23a	39.40b
	A5B1	14.66b	40.01a	45.33ab	21.09ab	40.94ab	37.97a	7.38a	39.99a	22.67a	29.97a	13.23a	27.79a	17.27b	41.71b
	平均Mean	18.10b	37.84ab	44.07abc	22.10ab	42.97ab	34.93ab	8.03a	39.76a	23.72a	28.49a	9.70b	26.55a	19.45b	44.30b
	A1B2	20.93a	35.20c	43.87a	24.58a	43.21a	32.21c	11.15a	40.21a	21.08a	27.56c	8.33ab	29.00bc	16.68c	45.99ab
	A2B2	16.35a	38.68b	44.97a	14.61c	44.49a	40.90a	5.01b	30.70bc	26.87a	37.42ab	7.15b	23.77c	23.20a	45.88ab
	A3B2	16.24a	41.32b	42.44a	14.88c	46.79a	38.33ab	5.72b	37.60ab	25.29a	31.39bc	8.35ab	29.89ab	20.78ab	40.98b
	A4B2	18.82a	38.51bc	42.67a	23.34ab	45.65a	31.01c	6.77b	37.60ab	21.25a	34.38b	10.16a	30.53a	12.92d	46.39a
	A5B2	9.39b	47.60a	43.01a	17.87bc	47.19a	34.94bc	6.57b	27.41c	24.43a	41.59a	8.83ab	25.43bc	18.36bc	47.39a
	平均Mean	16.34a	40.26b	43.39a	19.06b	45.46a	35.48ab	7.04b	34.70b	23.78a	34.47b	8.56ab	27.72bc	18.39bc	45.33ab
	A1B3	20.28a	36.25c	43.47a	16.00b	44.88abc	39.11a	7.45ab	40.49a	15.36bc	36.70b	12.63ab	27.97a	16.46ab	42.94c
	A2B3	19.55a	39.03bc	41.42a	15.45b	49.83a	34.73a	6.62b	27.75b	24.47a	41.16ab	8.33c	23.68ab	19.15a	48.85b
	A3B3	18.37a	40.18b	41.45a	19.56b	41.86c	38.59a	8.85ab	32.33ab	18.37bc	40.44ab	10.71bc	23.51ab	14.53bc	51.25b
	A4B3	18.36a	39.96b	41.68a	28.02a	42.88bc	29.10b	9.61a	30.54b	13.37c	46.47a	11.39b	21.62b	9.35d	57.64a
	A5B3	11.62b	44.50a	43.88a	14.10b	48.87ab	37.02a	8.68ab	30.62b	21.12ab	39.58b	14.80a	23.14b	12.29cd	49.78b
	平均Mean	17.64a	39.98b	42.38a	18.63b	45.66ab	35.71a	8.24ab	32.35ab	18.54bc	40.87ab	11.57b	23.98ab	14.36bc	50.09b

Table 6

Table 7

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主要特征 Main characteristic	贡选1号 Gongxuan 1	桂夏3号 Guixia 3	南豆25号 Nandou 25
生育期 Growth time (d)	120	108	134
叶形 Leaf shape	卵圆 Oval	椭圆 Ellipse	卵圆 Oval
株高 Plant height (cm)	96	59.9	67.5
结荚习性 Pod fertility	有限 limited	有限 limited	有限 limited
蛋白质 Protein (%)	47.00	43.62	49.10
脂肪 Fat (%)	17.20	20.11	17.50
始粒期单株平均根瘤个数 Number of nodules per plant at seed formation initiation stage	226.946	252.264	288.016
始粒期单株平均根瘤鲜重 Fresh weight of nodules per plant at seed formation initiation stage (g)	3.6830	4.2320	4.3963
始粒期单株根瘤固氮酶活性 C₂H₂ reduction per plant at seed formation initiation stage (mL·h^-1·g^-1)	0.5300	0.6519	1.0498

种间距 Row spacing	2016				2017
种间距 Row spacing	B1	B2	B3	平均 Mean	B1	B2	B3	平均 Mean
A1	1981.34a	1859.04a	2077.37a	1972.58a	1965.05a	1970.65ab	2175.21a	2036.97a
A2	1191.45b	1055.83b	1509.66b	1252.31b	1953.47a	1730.45c	1931.47b	1871.80b
A3	1328.67b	1323.31b	1795.36ab	1452.11b	1900.48a	1874.25b	1974.59b	1916.44b
A4	1807.99a	1819.78a	2007.11a	1878.29a	2015.97a	2039.67a	2071.52ab	2042.39a
A5	—	—	—	—	1947.57a	1799.39bc	1881.13b	1876.03b
平均 Mean	1627.36b	1491.74b	1847.37a	—	1956.51a	1882.88b	2006.78a	—

年份 Year	种间距 Row spacing	单株荚数 Pods per plant				单荚粒数 Seeds per pod				百粒重 Weight of 100-seeds (g)
年份 Year	种间距 Row spacing	B1	B2	B3	平均Mean	B1	B2	B3	平均Mean	B1	B2	B3	平均Mean
2016	A1	67.00a	71.67a	65.33a	68.00a	1.66b	1.80a	1.62a	1.69a	20.23a	19.27a	22.98a	20.83a
	A2	59.33b	44.33c	50.00c	48.22d	1.46c	1.70a	1.62a	1.59b	17.99c	16.06d	21.17b	18.41c
	A3	55.33b	48.33c	57.67b	53.78c	1.46c	1.69a	1.60a	1.59b	18.64b	17.06c	22.18a	19.29b
	A4	50.33b	54.67b	60.33a	58.11b	1.82a	1.82a	1.63a	1.76a	20.08a	18.53b	22.19a	20.26a
	平均 Mean	58.00b	54.75b	58.33b	—	1.60b	1.75a	1.62a	—	19.24b	17.73c	22.13a	—
2017	A1	63.00a	60.00a	49.00a	57.33a	1.46b	1.54a	1.45a	1.48c	18.24b	18.24a	26.10ab	20.86a
	A2	54.40a	57.60a	43.20a	51.73a	1.69a	1.60a	1.50a	1.60ab	18.19b	16.01b	25.43bc	19.87ab
	A3	56.00a	60.80a	46.90a	54.57a	1.55ab	1.61a	1.53a	1.56abc	18.68ab	16.39ab	23.59c	19.55b
	A4	49.20a	67.20a	43.80a	53.40a	1.70a	1.60a	1.54a	1.62a	20.59a	16.18ab	26.18ab	20.99a
	A5	52.80a	63.20a	41.80a	52.60a	1.60ab	1.56a	1.38a	1.51bc	19.72ab	15.59b	27.80a	21.04a
	平均 Mean	55.08a	61.76a	44.94a	—	1.60ab	1.58a	1.48a	—	19.08ab	16.48ab	25.82b	—

处理 Treatment	模拟方程 Simulative equation	相关系数 Correlation coefficient
A1B1	Y=17.5570/(1+e^{3.6696-0.1501x})^1/0.0806	0.9977**
A1B2	Y=17.1461/(1+e^{3.4713-0.1508x})^1/0.0841	0.9947**
A1B3	Y=24.4795/(1+e^{3.4113-0.2168x})^1/0.0134	0.9911**
A2B1	Y=18.7089/(1+e^{2.3874-0.1275x})^1/0.0417	0.9971**
A2B2	Y=15.4204/(1+e^{9.0364-0.2440x})^1/0.4750	0.9954**
A2B3	Y=23.4872/(1+e^{0.8381-0.1386x})^1/0.0131	0.9851**
A3B1	Y=18.5408/(1+e^{2.6195-0.1380x})^1/0.0420	0.9963**
A3B2	Y=16.2227/(1+e^{3.4650-0.1622x})^1/0.0540	0.9961**
A3B3	Y=24.2147/(1+e^{2.5246-0.1638x})^1/0.0269	0.9975**
A4B1	Y=19.9867/(1+e^{1.8642-0.1218x})^1/0.0342	0.9956**
A4B2	Y=16.8530/(1+e^{1.0419-0.0982x})^1/0.0514	0.9950**
A4B3	Y=25.6150/(1+e^{1.8951-0.1568x})^1/0.0191	0.9950**
A5B1	Y=18.2363/(1+e^{2.4845-0.1506x})^1/0.0245	0.9922**
A5B2	Y=18.0886/(1+e^{0.5033-0.1045x})^1/0.0196	0.9983**
A5B3	Y=26.2659/(1+e^{0.4055-0.1268x})^1/0.0136	0.9859**

处理 Treatment	R₀	Se (d)	Y_max (g)	V_max (g·d^-1)	(g·d^-1)	T_max (d)
A1B1	1.86e	27.71d	6.71e	12.03e	0.3822a	41.21d
A2B1	3.06d	32.03b	7.02b	21.08d	0.3754c	43.66a
A3B1	3.29c	29.60c	6.96c	22.43c	0.3755b	41.97c
A4B1	3.57b	33.40a	7.48a	26.23b	0.3741d	43.02b
A5B1	6.15a	26.89e	6.77d	41.26a	0.3723e	41.13e
平均 Mean	3.59	29.93	6.99	24.61	0.3759	42.20
A1B2	1.79d	27.64c	6.56c	11.31d	0.3828b	39.44d
A2 B2	0.51e	20.28e	6.80a	2.65e	0.4412a	40.08c
A3 B2	3.00b	25.33d	6.13e	17.92b	0.3776c	39.36e
A4 B2	1.91c	41.79a	6.36d	11.86c	0.3771d	40.85b
A5 B2	5.32a	38.66b	6.72b	35.40a	0.3715e	42.43a
平均 Mean	2.51	30.74	6.51	15.83	0.3900	40.43
A1 B3	16.22a	18.58e	9.07c	146.14a	0.3703d	35.64e
A2 B3	10.61b	29.05b	8.70e	91.73b	0.3703d	37.36b
A3 B3	6.08e	24.75d	9.03d	54.24e	0.3728a	37.49a
A4 B3	8.20d	25.75c	9.51b	77.34d	0.3714b	37.31c
A5 B3	9.34c	31.76a	9.73a	90.27c	0.3704c	37.11d
平均 Mean	10.09	25.98	9.21	91.94	0.3714	36.98

Effects of Row Spacing on Dry Matter Accumulation, Grain Filling and Yield Formation of Different Nodulation Characteristic Soybeans in Intercropping

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年份 Year	种间距 Row spacing	输出率 Output ratio				贡献率 Contribution ratio
年份 Year	种间距 Row spacing	B1	B2	B3	平均 Mean	B1	B2	B3	平均 Mean
2016	A1	48.19a	37.82c	35.35b	40.46b	43.98b	41.47b	53.42b	46.29c
	A2	50.81a	49.15ab	49.77a	49.91a	57.44a	51.68a	55.65ab	54.92a
	A3	50.03a	43.68b	46.54a	46.75a	50.01a	46.97b	55.74ab	50.89b
	A4	47.47a	49.93a	44.54a	47.31a	50.49a	49.35a	58.57a	52.80ab
	平均Mean	49.13a	45.15b	44.05a	—	50.50a	47.34b	55.85ab	—
2017	A1	41.79a	37.36a	44.06a	41.07a	53.64ab	53.70a	57.77a	55.04a
	A2	40.82a	38.84a	24.21b	34.62ab	57.70a	44.55b	24.25b	42.17b
	A3	44.07a	31.63ab	34.73ab	36.81a	57.96a	50.61ab	33.48b	47.35ab
	A4	31.95ab	34.25ab	46.74a	37.64a	39.02bc	37.93bc	57.75a	44.89b
	A5	26.69b	24.15b	34.43ab	28.43b	32.56c	23.80c	38.33b	31.56c
	平均Mean	37.06a	33.25ab	36.83ab	—	48.17b	42.12b	42.31ab	—