| 毛苕子不同播种量与燕麦混播对群落竞争及燕麦生物量分配的影响 |
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| 引用本文： | 冯琴,王斌,海艺蕊,王腾飞,倪旺,邓建强,李满有,兰剑.毛苕子不同播种量与燕麦混播对群落竞争及燕麦生物量分配的影响[J].草地学报,2022,30(9):2423-2429. |
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| 作者姓名： | 冯琴 王斌 海艺蕊 王腾飞 倪旺 邓建强 李满有 兰剑 |
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| 作者单位： | 1. 宁夏大学农学院, 宁夏 银川 750021;2. 宁夏草牧业工程技术研究中心, 宁夏 银川 750021 |
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| 基金项目： | “一年两熟”人工草地可持续发展模式研究与示范项目（2020BBF02001），宁夏高等学校一流学科建设（草学学科）项目（NXYLXK2017A01）资助 |
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| 摘 要： | 为探究宁夏干旱区燕麦与毛苕子混播的最佳播种量，本试验以燕麦（Avena sativa）和毛苕子（Vicia villosa）为研究对象，采用单因素随机区组设计，设五个毛苕子播种水平33.0 kg·hm-2（YM1）、45.0 kg·hm-2（YM2）、57.0 kg·hm-2（YM3），69.0 kg·hm-2（YM4）和81.0 kg·hm-2（YM5）]与燕麦（播种量为120.0 kg·hm-2）混播，研究了不同播种量的毛苕子与燕麦混播对草地生产性能、燕麦生物量分配及群落竞争的影响。结果表明，YM1，YM2，YM3和YM5处理的混播草地干草产量均高于燕麦单播，其中在YM2处理下干草产量达到最高（12 424.24 kg·hm-2），较燕麦和毛苕子单播分别提高了15.83%，63.18%；随着毛苕子播种量的增加，燕麦各器官生物量均发生显著变化（P<0.05），其中在YM3处理下燕麦单株地上生物量和总生物量最大；同时在各混播处理中，燕麦在混播草地中处于竞争优势；除YM4外各混播处理的土地当量比均大于1。综合来看，当毛苕子播种量为45.0 kg·hm-2时与燕麦混播草地生产力提高效果显著，土地利用率最大，是宁夏干旱区滴灌条件与燕麦混播的最佳播种量。
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| 关 键 词： | 毛苕子 燕麦 混播 生物量分配 群落竞争 |
| 收稿时间： | 2022-03-16 |
Effects of Mixed Sowing of Vetch and Oat on Community Competition and Biomass Allocation of Oats |
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| FENG Qin,WANG Bin,HAI Yi-rui,WANG Teng-fei,NI Wang,DENG Jian-qiang,LI Man-you,LAN Jian.Effects of Mixed Sowing of Vetch and Oat on Community Competition and Biomass Allocation of Oats[J].Acta Agrestia Sinica,2022,30(9):2423-2429. |
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| Authors: | FENG Qin WANG Bin HAI Yi-rui WANG Teng-fei NI Wang DENG Jian-qiang LI Man-you LAN Jian |
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| Institution: | 1. College of Agriculture, Ningxia University, Yinchuan, Ningxia 750021, China;2. Ningxia Grass and Animal Husbandry Engineering Technology Research Center, Yinchuan, Ningxia 750021, China |
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| Abstract: | To explore the best sowing rate of oat and vetch mixed sowing in the arid area of Ningxia, this experiment took oat (Avena sativa) and vetch (Vicia villosa) as experimental subjects, and used a single factor randomized block design. Five sowing levels of vetch33.0 kg·hm-2 (YM1), 45.0 kg·hm-2 (YM2), 57.0 kg·hm-2 (YM3), 69 kg·hm-2, (YM4) and 81.0 kg·hm-2 (YM5)] were mixed with oats (120.0 kg·hm-2) to study the effects of different sowing rates of vetch and oats on grassland production performance, oat biomass allocation, and community competition. The results showed that the dry grass yield of mixed grasslands under YM1, YM2, YM3, and YM5 treatments were higher than that of oat monoculture, and the dry grass yield under YM2 treatment reached the highest (12 424.24 kg·hm-2), which were 15.83% and 63.18% higher than that of oat monoculture and vetch monoculture, respectively. With the increase in vetch seeding amount, the biomass of each organ of oat changed significantly (P<0.05), and the aboveground biomass per plant and total biomass of oat were the largest under YM3 treatment. At the same time in the mixed sowing treatment, oats in the mixed grassland in a competitive advantage.Except YM4, the land equivalent ratio of each mixed sowing treatment was greater than 1. In summary, when the sowing rate of vetch was 45.0 kg·hm-2, the productivity of mixed sowing grassland with oats increased significantly, and the land utilization rate was the largest, which was the best sowing rate of drip irrigation and oat mixed sowing in arid areas of Ningxia. |
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| Keywords: | Vetch Oat Mixture sowing Biomass allocation Community competition |
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