玉米/豆科作物间作系统中不同互作因子对群体产量的影响

李奇松; 李家俊; 叶江华; 罗晓棉; 林文雄

doi:10.19303/j.issn.1008-0384.2020.06.003

玉米/豆科作物间作系统中不同互作因子对群体产量的影响

doi: 10.19303/j.issn.1008-0384.2020.06.003

李奇松^{1, 2,},
李家俊¹,
叶江华^{1, 2},
罗晓棉²,
林文雄^2, ,

1.
武夷学院茶与食品学院，福建　武夷山　354300
2.
福建省农业生态过程与安全监控重点实验室/福建农林大学生命科学学院，福建　福州　350002

基金项目: 福建省农业生态过程与安全监控重点实验室（福建农林大学）开放课题项目（NYST-2019-02）；武夷学院引进人才科研启动项目（YJ201906）

详细信息

作者简介:
李奇松（1987−），男，博士，讲师，研究方向：作物生理与分子生态学（E-mail：liqisong0591@126.com）

通讯作者:
林文雄（1957−），男，博士，教授，研究方向：作物生理与分子生态学（E-mail：lwx@fafu.edu.cn）

中图分类号: S 315
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- 被引次数: 0
出版历程
- 收稿日期: 2019-08-16
- 修回日期: 2020-01-29
- 刊出日期: 2020-08-10

Crop-yields of Maize and Legume under Intercropping Cultivation

LI Qisong^{1, 2
,},
LI Jiajun¹,
YE Jianghua^{1, 2},
LUO Xiaomian²,
LIN Wenxiong^{2
, ,}

1.
College of Tea and Food Science, Wuyi University, Wuyishan, Fujian　354300, China
2.
Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring/College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, Fujian　350002, China

摘要

摘要: 目的明确在间作条件下不同互作因子（地上部互作、根系竞争、土壤环境改良）对不同复合群体的生态效应。方法以玉米/大豆和玉米/花生间作组合为研究对象，设置了间作无隔、间作网隔、间作全隔和3种作物的单作处理，比较分析不同间作处理的种间竞争关系和互作因子的产量贡献率。结果玉米/大豆和玉米/花生间作均能提高群体产量，其中玉米增产起到主要作用，不同作物的竞争力排序为玉米＞大豆＞花生；地上部互作效应主要体现在提高了两种间作组合中玉米的产量，其产量贡献率分别为15.83%（玉米/大豆）和15.98%（玉米/花生），但却显著抑制了花生的产量（−11.42%）；根系竞争对玉米/大豆间作组合的单一作物和群体产量均起到负效应（玉米−2.87%、大豆−5.35%、群体−4.52%），而对玉米/花生间作组合的玉米和群体产量起到正效应（5.88%和0.80%）；土壤环境改良对两种间作组合中各作物产量均表现出正效应，可显著提高间作系统的产量和稳定性。结论不同间作组合之间，由于作物在形态和生理上的差异，各互作因子对间作群体产量的贡献率存在差异，其中土壤环境改良对玉米/豆科间作系统的增产及稳产起到主要作用。通过量化不同互作因子对间作作物产量形成的生态效应，可为优化间作的田间作物配置和管理提供依据。
- 玉米 /
- 大豆 /
- 花生 /
- 间作 /
- 种间竞争 /
- 产量贡献率
Abstract: Objective To clarify the effects of different interaction factors (aboveground interaction, root competition, soil environment improvement) on crop-yields under maize and legumes intercropping systems. Method Maize/soybean and maize/peanut were intercropped with no separation, with a net-barrier or with a physical barrier to completely separate the involved maize and legume plants. In addition, maize, soybean, and peanut were also planted as monocrop at the testing fields for comparison. Interspecies competition or synergy, such as the aboveground plant interactions and underground root competition, and soil improvements induced by the treatments on crop-yields of the two systems were analyzed. Result Intercropping maize and legume plants increased the combined crop-yield over the monocropping, despite the treatment differences. In an intercropping system, maize was most competitive of the 3 crops with respect to the aboveground growth, while peanut the least. The maize yield under the maize/soybean system increased with a contribution rate of 15.83% by the aboveground interactions, and 15.98% under the maize/peanut cultivation. The peanut yield, meanwhile, was suppressed by 11.42% when intercropped with maize. In contrast to the aboveground plant interactions, the root competition exerted negative effects on the yields of both species under the maize/soybean system that resulted in a reduction of 2.87% on maize, 5.35% on soybean, and 4.52% on total yield. For the intercropped maize and peanut plants, the root competition raised the maize yield by 5.88% and 0.8% on the combined yield. The intercropping improved soil conditions that facilitated crop-yield and production stability in both systems. Conclusion The morphology and physiology of the maize, soybean, and peanut plants appeared to cause the variations on the effects on crop-yield by the intercropping. Meanwhile, the soil eco-system was improved by the practice contributing significantly to the yield and production stability. A quantified relationship between intercropping and crop-yield as illustrated by this study could be applied to optimize other agricultural planning and management as well.
- maize /
- soybean /
- peanut /
- intercropping /
- interspecific competition /
- yield contribution rate

HTML全文

表 1 不同处理下两种间作组合的作物产量和土地当量比（LER）

Table 1. Crop-yields and LER of two intercropping systems with varied treatments

处理 Treatments	玉米/大豆间作产量 Maize/soybean intercropping yield/（kg·hm⁻²）			玉米/花生间作产量 Maize/peanut intercropping yield/（kg·hm⁻²）
处理 Treatments	Y_1m	Y_1s	LER₁	Y_2m	Y_2p	LER₂
NS	3 066.45±119.73 a	1 156.05±48.98 ab	1.10±0.06 ab	3 460.50±79.35 a	1 764.60±47.52 a	1.12±0.03 a
HS	3 141.15±138.66 a	1 214.40±27.63 a	1.15±0.03 a	3 311.40±99.47 a	1 795.35±31.69 a	1.11±0.01 a
CS	3 012.39±174.32 a	1 091.55±20.41 b	1.05±0.03 b	2 939.70±54 .00 b	1 571.70±49.62 b	0.98±0.02 b
MS	7 802.10±229.85	1 635.00±42.38		7 604.10±342.91	2 661.30±50.70
注：（1）NS表示无隔处理，HS表示网隔处理，CS表示全隔处理，MS表示单作处理；Y_1m、Y_1s、LER₁分别表示玉米/大豆间作组合中的玉米产量、大豆产量、土地当量比；Y_2m、Y_2p、LER₂分别表示玉米/花生间作组合中的玉米产量、花生产量、土地当量比；（2）表中数值之后无相同小写字母者表示差异达显著水平（LSD test, P＜0.05, n=3）（表2～5同）。 Note: NS: non-separated treatment; HS: net-separated treatment; CS: completely separated treatment; MS: monoculture treatment. Y_1m, Y_1s and LER₁ respectively represent maize yield, soybean yield and land equivalent ratio in maize/soybean intercropping. Y_2m, Y_2s and LER₂ respectively represent maize yield, soybean yield and land equivalent ratio in maize/peanut intercropping. Different letters show significant differences determinedby the LSD（least significant difference）test（P＜0.05, n=3）（the same as table 2-5）.

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表 2 不同处理下两种间作组合的区域时间等价率（ATER）和农田利用效率（LUE）

Table 2. ATER and LUE of two intercropping systems with varied treatments

处理 Treatments	玉米/大豆 Maize/soybean intercropping		玉米/花生 Maize/peanut intercropping
处理 Treatments	ATER₁	LUE₁	ATER₂	LUE₂
NS	1.01±0.05 ab	1.06±0.06 ab	1.02±0.02 a	1.07±0.02 a
HS	1.06±0.02 a	1.10±0.03 a	1.02±0.01 a	1.06±0.01 a
CS	0.97±0.03 b	1.01±0.03 b	0.89±0.03 b	0.94±0.03 b

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表 3 不同处理下两种间作组合的相对拥挤系数（RCC）

Table 3. RCC of two intercropping systems with varied treatments

处理 Treatments	玉米/大豆 Maize/soybean intercropping			玉米/花生 Maize/peanut intercropping
处理 Treatments	RCC_1m	RCC_1s	RCC₁	RCC_2m	RCC_2p	RCC₂
NS	1.30±0.04 a	1.21±0.11 b	1.57±0.12 b	1.67±0.07 a	0.99±0.08 a	1.69±0.19 a
HS	1.35±0.04 a	1.44±0.02 a	1.95±0.03 a	1.54±0.09 a	1.04±0.06 a	1.58±0.05 a
CS	1.26±0.06 a	1.00±0.02 c	1.26±0.03 c	1.26±0.04 b	0.72±0.06 b	0.91±0.10 b

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表 4 不同处理下两种间作组合的种间竞争力（A）

Table 4. Competitiveness（A）of two intercropping systems with varied treatments

处理 Treatments	玉米/大豆 Maize/soybean intercropping		玉米/花生 Maize/peanut intercropping
处理 Treatments	A_1m	A_1s	A_2m	A_2p
NS	0.12±0.04 ab	−0.12±0.04 ab	0.37±0.02 a	−0.37±0.02 b
HS	0.09±0.03 b	−0.09±0.03 b	0.29±0.05 b	−0.29±0.05 a
CS	0.16±0.03 a	−0.16±0.03 a	0.31±0.02 b	−0.31±0.02 a

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表 5 不同处理下两种间作组合的实际产量损失指数（AYL）和系统生产力指数（SPI）

Table 5. AYL and SPI of two intercropping systems with varied treatments

处理 Treatments	玉米/大豆 Maize/soybean intercropping				玉米/花生 Maize/peanut intercropping
处理 Treatments	AYL_1m	AYL_1s	AYL₁	SPI₁	AYL_2m	AYL_2p	AYL₂	SPI₂
NS	0.18±0.02 a	0.06±0.03 b	0.24±0.03 b	575.91	0.37±0.03 a	−0.01±0.03 a	0.36±0.05 a	566.81
HS	0.21±0.02 a	0.11±0.00 a	0.32±0.02 a	599.62	0.31±0.04 a	0.01±0.02 a	0.32±0.03 a	562.74
CS	0.16±0.03 a	0.00±0.01 c	0.16±0.03 c	551.55	0.16±0.02 b	−0.11±0.03 b	0.05±0.05 b	495.37

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表 6 不同互作因子对两间作组合的产量贡献率（YCR）

Table 6. Yield contribution rates（YCR）by various interacting factors on two intercropping systems

影响因子 Treatments	玉米/大豆间作 Maize/soybean intercropping/%			玉米/花生间作 Maize/peanut intercropping/%
影响因子 Treatments	YCR_1m	YCR_1s	YCR₁	YCR2m	YCR_2p	YCR₂
土壤环境改良 Improvement of soil environment	4.96	11.27	9.17	14.66	12.61	13.29
根系竞争 Root competition	−2.87	−5.35	−4.52	5.88	−1.74	0.80
地上部互作 Aboveground interaction	15.83	0.13	5.36	15.98	−11.42	−2.28
综合作用 Comprehensive effect	17.92	6.05	10.01	36.52	−0.55	11.81

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