| 宁夏黄土丘陵区典型草原改良效果研究 |
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| 引用本文： | 姚玉霞,李云.宁夏黄土丘陵区典型草原改良效果研究[J].农业科学研究,2011,32(4):38-41. |
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| 作者姓名： | 姚玉霞 李云 |
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| 作者单位： | 宁夏彭阳县农牧和科学技术局,宁夏彭阳,756500 |
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| 基金项目： | 国家自然科学基金项目，高等学校博士学科点专项科研基金资助课题，宁夏国际合作项目 |
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| 摘 要： | 研究退化天然草地改良对草地生态恢复和草地畜牧业持续发展具有重要意义.在宁夏黄土丘陵区典型草原进行了封育、施肥、地表不处理补播、带状划破补播和水平沟整地补播改良效果的研究.结果发现,各改良措施均可使草地植物群落结构优化,可食牧草数量、产量及草地载牧量增加.改良后,土壤0～20cm有机质、全氮和速效氮的质量分数均有所上升.综合考虑各改良措施的实施难易和效果,封育和带状划破补播可为该区典型草原首选的改良措施.
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| 关 键 词： | 典型草原 改良效果 宁南黄土丘陵区 |
Studies on improved effects of type steppe in hilly area of the Loess Plateau in Ningxia |
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| Yao Yuxia,Li Yun.Studies on improved effects of type steppe in hilly area of the Loess Plateau in Ningxia[J].Journal of Agricultural Sciences,2011,32(4):38-41. |
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| Authors: | Yao Yuxia Li Yun |
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| Institution: | (Agriculture and Animal Husbandry & Science and Technology Bureau of Pengyang County, Ningxia,Pengyang 756500,China) |
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| Abstract: | Studies on improved effects of degenerate natural grassland were important for ecological restoration of grasslands and sustainable development of animal husbandry. Several improved effects of ungrazing, fertilizing, no disposed ＋ reseeding, bandingtype tillage ＋ reseeding, parallel ditches ＋ reseeding were studied in type steppe in hilly area of the Loess Plateau of Ningxia. The results showed that these improved measures optimized structure of grassland plant community. Number of edible forage,output of edible forage and carry capacity of grassland increased also. The contents of 0 - 20 cm soil organic matter, all nitrogen, and rapidly available nitrogen in different treatments had ascended.Considering the difficulty and effects of different improving measures, un-grazing and banding-type tillage ＋ reseeding could be as preferred improving measures for type steppe in hilly area of the Loess Plateau of Ningxia. |
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| Keywords: | type steppe improved effects hilly area of the Loess Plateau in Ningxia |
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