草地学报 ›› 2026, Vol. 34 ›› Issue (5): 1889-1899.DOI: 10.11733/j.issn.1007-0435.2026.05.029

• 技术研发 • 上一篇    

甜高粱与田菁间作比例对饲草生产力及种间关系的影响

董志晓1, 傅康1, 刘英杰1, 王昭婷1, 谭小平1, 范文涛1, 赵俊茗1, 马啸1, 张健2   

  1. 1. 四川农业大学草业科技学院, 四川 成都 611130;
    2. 四川省林业和草原发展研究中心, 四川 成都 610036
  • 收稿日期:2025-09-12 修回日期:2025-12-02 发布日期:2026-05-08
  • 通讯作者: 马啸,E-mail:maroar@126.com;张健,E-mail:zjturf@163.com
  • 作者简介:董志晓(1993-),男,汉族,河北邢台人,博士研究生,主要从事饲草种质创新与育种研究,E-mail:1565752354@qq.com;
  • 基金资助:
    国家重点研发计划项目(2024YFD1301200);四川肉牛创新团队建设项目(SCCXTD-20-13)资助

Effects of Intercropping Ratios of Sorghum bicolor and Sesbania cannabina on Forage Productivity and Interspecific Relationships

DONG Zhi-xiao1, FU Kang1, LIU Ying-Jie1, WANG Zhao-ting1, TAN Xiao-ping1, FAN Wen-tao1, ZHAO Jun-ming1, MA Xiao1, ZHANG Jian2   

  1. 1. College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, Sichuan Province 611130, China;
    2. Sichuan Forestry and Grassland Development Research Center, Chengdu, Sichuan Province 610036, China
  • Received:2025-09-12 Revised:2025-12-02 Published:2026-05-08

摘要: 为明确甜高粱(Sorghum bicolor)与田菁(Sesbania cannabina)在成都平原地区的适宜间作比例及其对饲草生产力和种间关系的影响。本研究以单作为对照,设置五种播量比例(甜高粱:田菁)3∶1,2∶1,1∶1,1∶2和1∶3,并系统评估间作对作物生长、饲草产量及品质指标的综合效应。结果表明:间作显著降低了两种作物的株高和茎粗,但间作饲草的营养品质较甜高粱单作明显改善,且粗蛋白、总可消化养分及综合品质指标随着田菁比例增加而提升。虽然甜高粱单作的鲜草与干草产量最高,但间作3∶1处理在各组合中产量表现较优。种间关系分析表明,当间作比例大于1∶1时,两种作物呈协同互促效应,而比例小于1∶1时田菁对甜高粱生长产生抑制。基于TOPSIS与隶属函数的综合评价结果,甜高粱与田菁在成都平原的最佳播种比例为2∶1,对应播量为14.67 kg·hm-2和30.00 kg·hm-2

关键词: 甜高粱, 田菁, 间作, 生产性能, 种间关系

Abstract: This study aimed to identify the optimal intercropping ratio of sweet sorghum (Sorghum bicolor) and sesbania (Sesbania cannabina) in the Chengdu Plain region and to clarify its effects on forage productivity and interspecific interactions. Five intercropping ratios (3∶1, 2∶1, 1∶1, 1∶2 and 1∶3; sweet sorghum : sesbania) were established, with monocultures as controls. Agronomic traits, forage yield and nutritional quality were evaluated to assess the overall performance of the intercropping system. The results showed that intercropping significantly reduced plant height and stem diameter of both species. However, the nutritional quality of the mixed forage was significantly improved compared to sweet sorghum monoculture. Crude protein, total digestible nutrients and comprehensive quality indicators increased with the increas of sesbania proportion. Sweet sorghum monoculture produced the highest fresh and dry matter yields, while the 3∶1 intercropping ratio achieved the highest yield among the intercropping treatments. Interspecific interaction analysis indicated a facilitative effect when the sowing ratio exceeded 1∶1, whereas sesbania inhibited sweet sorghum growth at lower ratios. Based on TOPSIS and membership function evaluation, the optimal sowing ratio in the Chengdu Plain was determined to be 2∶1, corresponding to 14.67 kg·hm-2 of sweet sorghum and 30.00 kg·hm-2 of sesbania. These findings provide a scientific basis for optimizing the sweet sorghum–sesbania intercropping system in the Chengdu Plain.

Key words: Sorghum bicolor, Sesbania cannabina, Intercropping, Production performance, Interspecific relationship

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