Acta Agrestia Sinica ›› 2026, Vol. 34 ›› Issue (9): 3486-3495.DOI: 10.11733/j.issn.1007-0435.2026.09.032

Previous Articles    

The Effects of Intercropping Ratio and Cutting Period on the Forage Production Performance of Rape and Oat Intercropping

ZHONG Jia-yi1, Saimaocuo1, LIU Yong1, LUO Sheng-hu2, MA Xiao-ping2, QIN Yan1   

  1. 1. Academy of Animal and Veterinary Sciences, Qinghai University (Qinghai Academy of Animal Science and Veterinary Medicine), Key Laboratory of Superior Forage Germplasm in the Qinghai-Tibetan Plateau, Xining, Qinghai Province 810016, China;
    2. The Grassland Station of Menyuan Hui Autonomous County, Menyuan, Qinghai Province 810300, China
  • Received:2025-10-30 Revised:2025-12-30 Published:2026-09-11

混作比例和刈割期对油菜-燕麦混作饲草生产性能的影响

仲家颐1, 赛毛措1, 刘勇1, 罗生虎2, 马晓萍2, 秦燕1   

  1. 1. 青海大学畜牧兽医科学院(青海省畜牧兽医科学院), 青海省青藏高原优良牧草种质资源利用重点实验室, 青海 西宁 810016;
    2. 门源回族自治县草原站, 青海 门源 810300
  • 通讯作者: 秦燕, E-mail: mule119@163.com
  • 作者简介:仲家颐(2001-),女,汉族,甘肃酒泉人,硕士研究生,主要从事牧草育种与栽培研究,E-mail:1751164992@qq.com
  • 基金资助:
    现代农业产业技术体系建设专项资金(CARS-34)资助

Abstract: To investigate the effects of intercropping ratios and cutting periods on forage production performance in a rapeseed-oat mixed cropping system, this trial measured and analyzed forage yield and quality indicators across nine mixing ratios and three cutting periods for the rapeseed (‘Qingyou No. 21’)-oat (‘Lena’) system. Results indicated that dry hay yields at the late rapeseed flowering stage (A2) and the rapeseed pod milk stage (A3) were significantly higher than at the peak rapeseed flowering stage (A1) (P<0.05). The relative feed value at A3 was significantly higher than at A1 and A2P<0.05). At A3, the 5∶5 rapeseed-oat mixture (A3R5O5) exhibited the highest land equivalent ratio of 2.21. TOPSIS multi-criteria decision analysis indicated that during A3, the 7∶3 rapeseed-oat mixture (A3R7O3) achieved the highest fit index of 0.75. This treatment exhibited comparatively high hay yield (454.16 kg?hm-2) and land equivalent (2.16), with lower acid-detergent fiber (69.19%) and neutral-detergent fiber (38.64%) content. This constitutes an agronomic practice suitable for promotion within the study area.

Key words: Intercropping ratio, Mowing period, Mixed cultivation of rape and oat, Biomass, Forage quality, Interspecies competition

摘要: 为探究混作比例和刈割时期对油菜(Brassica napus L.)-燕麦(Avena sativa L.)混作系统饲草生产性能的影响,本试验对油菜(‘青油21号’)-燕麦(‘林纳’)混作系统9个混作比例、3个刈割时期下的饲草产量和品质指标进行了测定分析。结果表明:油菜开花末期(A2)和油菜角果乳熟期(A3)的干草产量显著高于油菜盛花期(A1)(P<0.05),A3相对饲用价值显著高于A1和A2P<0.05)。在油菜角果乳熟期,油菜和燕麦混作比例为5∶5处理(A3R5O5)土地当量比最高,为2.21。TOPSIS-多准则决策模型分析表明:在油菜角果乳熟期,油菜和燕麦混作比例为7∶3处理(A3R7O3)贴合度最高,为0.75,其干草产量和土地当量比较高,分别为454.16 kg?hm-2和2.16,酸性洗涤纤维和中性洗涤纤维含量较低,分别为69.19%和38.64%,是适宜研究区推广的农艺措施。

关键词: 混作比例, 刈割时期, 油菜-燕麦混作, 生物量, 饲草品质, 种间竞争

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