| 退化羊草草原改良研究进展 |
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| 引用本文： | 张文军,张英俊,孙娟娟,杨高文.退化羊草草原改良研究进展[J].草地学报,2012,20(4):603-608. |
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| 作者姓名： | 张文军 张英俊 孙娟娟 杨高文 |
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| 作者单位： | 中国农业大学动物科技学院,北京,100193 |
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| 基金项目： | 国家牧草产业技术体系(CARS-35)资助 |
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| 摘 要： | 分析了羊草(Leymus chinensis)草原退化的原因,概述了常用的农艺、化学和生物措施,如浅耕翻、松土、火烧、施肥、灌溉,补播、施枯草或秸秆、石膏改良技术等,在此基础上,论述了不同技术的优缺点、适用范围与改良机制.通过改良,土壤的物理化学性状明显改善,羊草根茎得到充分发展、占据了较大的生态位且竞争能力进一步加强,同时地上植被的恢复速度显著加快,地上和地下产生了积极的正向耦合效应.最后提出了重度、中度和轻度退化羊草草原的3种综合治理模式.
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| 关 键 词： | 退化羊草草原 改良 综合治理 模式 |
Leymus Chinesis Grassland Improvements(Review) |
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| ZHANG Wen-jun
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ZHANG Ying-jun
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SUN Juan-juan
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YANG Gao-wen.Leymus Chinesis Grassland Improvements(Review)[J].Acta Agrestia Sinica,2012,20(4):603-608. |
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| Authors: | ZHANG Wen-jun ZHANG Ying-jun SUN Juan-juan YANG Gao-wen |
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| Institution: | (Department of Grassland Science,China Agricultural University,Beijing 100193,China) |
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| Abstract: | Mechanisms of degraded Leymus chinensis grasslands and commonly used agronomic,chemical and biological measures were reviewed in this paper.The advantages and disadvantages of each improving method such as plowing,loosing,burning,over-sowing,fertilization and the applications of subtilis,corn stalks or gypsum were further clarified.Physical and chemical soil properties were significantly improved;Leymus chinensis roots were fully developed and occupied a larger ecological niche,and the competitive ability was further strengthened in improving grassland.Recovery speed of aboveground vegetation was apparently accelerated.Aboveground and underground materials had a positive coupling effect.Finally,three comprehensive improving models according to the different degraded levels of Leymus chinensis grassland were proposed in this paper. |
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| Keywords: | Degraded Leymus chinensis grassland Improvement Comprehensive treatment Model |
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