| 秋季补播多花黑麦草对扁穗牛鞭草草地产量、质量和植物组成的影响 |
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| 引用本文： | 杨春华,李向林,张新全,刘芳,刘伟.秋季补播多花黑麦草对扁穗牛鞭草草地产量、质量和植物组成的影响[J].草业学报,2004,13(6):80-86. |
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| 作者姓名： | 杨春华 李向林 张新全 刘芳 刘伟 |
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| 作者单位： | 四川农业大学草业科学系,四川,雅安,625014;中国农业科学院畜牧研究所,北京,100094 |
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| 基金项目： | 农业部农业结构调整技术研究专项基金
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四川省育种攻关项目 |
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| 摘 要： | 本试验研究秋季补播多花黑麦草对扁穗牛鞭草草地产量、质量和植物组成的影响,为川西南丘陵山区及类似地区冬春季增加青绿饲料的供应提供最佳方案.结果表明,补播能显著增加产草量(P<0.05),补播时间显著影响牧草产量(P<0.05),早期补播(10月10日)牧草总产量达13 254.6 kg/hm2 DM,利用时间比其他补播时间提前2周.多花黑麦草补播量为22 kg/hm2时,牧草产量最高(13 080.7 kg/hm2 DM),粗蛋白产量比不补播处理增加750.9 kg/hm2 DM.补播改变了'广益'扁穗牛鞭草草地中的优势植物种类,在冬春季以多花黑麦草为主(占56%),并能有效抑制杂草.由此建议,在生产中采用22 kg/hm2的补播量,于10月10日前后播种,可提高'广益'扁穗牛鞭草草地全年牧草产量.
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| 关 键 词： | 补播时间 补播量 多花黑麦草 扁穗牛鞭草 产量 植物组成 |
| 文章编号： | 1004-5759(2004)06-0080-07 |
| 修稿时间： | 2003年10月8日 |
Influence of overseeding on herbage production,quality and botanical composition of Hemarthria compressa pastures oversown with annual Lolium multiflorum in autumn |
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| YANG Chun-hua,LI Xiang-lin,ZHANG Xin-quan,LIU Fang,LIU Wei.Influence of overseeding on herbage production,quality and botanical composition of Hemarthria compressa pastures oversown with annual Lolium multiflorum in autumn[J].Acta Prataculturae Sinica,2004,13(6):80-86. |
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| Authors: | YANG Chun-hua LI Xiang-lin ZHANG Xin-quan LIU Fang LIU Wei |
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| Institution: | YANG Chun-hua~1,LI Xiang-lin~2,ZHANG Xin-quan~1,LIU Fang~2,LIU Wei~1 |
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| Abstract: | The experiments were conducted to assess the feasibility of establishing annual Lolium multiflorum into resident Hemarthria compressa pastures in autumn, with the objectives of growing a green forage for use during winter and early spring seasons in the hilly mountain area of southwest Sichuan. The results showed that overseeding could increase production of forage significantly (P<0.05). Overseeding date affected total forage production significantly (P<0.05). The production of forage by early overseeding (on Oct.10) was (13 254.6) (kg/hm~2) DM, which was used 2 weeks early comparing with other overseeding dates. The production which overseeding rate by 22 (kg/hm~2) was the highest (13 080.7 (kg/hm~2) DM), and cure protein improved (750.9) kg/hm~2 DM, more than that of no overseeding treatment. Overseeding changed the dominant position of GuangYi Hemarthria compressa and Lolium multiflorum in grassland. Lolium multiflorum was dominant position (56% of total production) during winter and spring, and could control weeds efficiently. We suggest that it can improve the total production of forage in practice overseeding rate by 22 (kg/hm~2), overseeding date around Oct.10 in GuangYi Hemarthria compressa pasture. |
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| Keywords: | overseeding date overseeding rate Lolium multiflorum Hemarthria compressa production botanical composition |
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