| 牧压和肥力对亚热带山地牧草净生产的影响 |
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| 引用本文： | 李向林,白静仁,韩雪松,龚真,黄静. 牧压和肥力对亚热带山地牧草净生产的影响[J]. 草地学报, 2001, 9(2): 79-82,86. DOI: 10.11733/j.issn.1007-0435.2001.02.001 |
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| 作者姓名： | 李向林 白静仁 韩雪松 龚真 黄静 |
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| 作者单位： | 1. 中国农业科学院畜牧研究所, 北京, 100094;2. 湖北省利川市畜牧局, 445400 |
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| 摘 要： | 在亚热带山地湿润环境条件下, 研究牧压和土壤肥力对人工草地净生产的影响。三年试验结果表明, 绵羊在轮牧下, 产草量和磷肥对全年及各月牧草净生产具有显著影响。禁牧时, 夏季地上生物量积累到一定程度后, 只有很少量的净生产。放牧时, 产草量在1000kgDM/hm2左右时, 净生产最大, 当产草量低于300kgDM/hm2以下时, 净生产量则降低。每年施一次 P2O536～ 60kg/hm2, 可以显著增加牧草净生产, 尤以春末夏初时施肥更为显著。最低产草量出现在不施肥处理
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| 关 键 词： | 亚热带 山地 牧压 肥力 净生产 |
| 收稿时间： | 2000-11-01 |
Effect of Grazing Pressure and Soil Fertility on Net Pasture Production of Subtropical Mountain |
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| LI Xiang-lin,BAI Jing-ren,HAN Xue-song,GONG Zhen,HUANG Jing. Effect of Grazing Pressure and Soil Fertility on Net Pasture Production of Subtropical Mountain[J]. Acta Agrestia Sinica, 2001, 9(2): 79-82,86. DOI: 10.11733/j.issn.1007-0435.2001.02.001 |
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| Authors: | LI Xiang-lin BAI Jing-ren HAN Xue-song GONG Zhen HUANG Jing |
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| Affiliation: | 1. Institute of Animal Science, CAAS, Beijing 100094, China;2. Lichuan Bureau of Animal Husbandry, Hubei 445400, China |
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| Abstract: | The effect of grazing and fertility on net pasture production(net herbage accumulation)was studied experimentally in a subtropical mountain area located in Western Hubei Province.The result of three years from 1997 to 1999 showed significant effect of post grazing residual and P level on seasonal and annual net production of the sown pasture under sheep rotational grazing.The pasture without any grazing disturbance had little net production after reaching a high level in summer.Net production was maximized by grazing management with a residual around in net production.Phosphorus applied annually at 36～60 kg/hm2 resulted in markedly increased pasture net production,particularly during late spring/early summer period when there is a high potential of pasture growth.The lowest production occurred where no fertilizer was applied. |
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| Keywords: | Subtropics Mountain Grazing Fertility Net production |
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