| 金沙江流域退耕还草效益分析 |
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| 引用本文： | 王继春,兰德荣,梁进,毕玉芬,陈功,罗富成.金沙江流域退耕还草效益分析[J].草业科学,2004,21(12):23-27. |
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| 作者姓名： | 王继春 兰德荣 梁进 毕玉芬 陈功 罗富成 |
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| 作者单位： | 云南省昭通市彝良县畜牧兽医站,云南,彝良,650000;云南农业大学,云南,昆明,650201 |
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| 摘 要： | 2002年,在金沙江流域-云南昭通地区彝良县海拔2 000 m的半山区进行了退耕还草试验,选用9种牧草进行引种,并进行了不同草种组合的混播处理.2003年对产草量、株高、生长速度等生产性能指标进行了调查和分析.结果表明,9种禾本科牧草均能安全越冬,且各性状表现较好,均可作为半山区退耕还草的选用品种,尤其是苇状羊茅Festuca arundinacea,无芒雀麦Brome inermis(多福)的长势和产量优异,其次为多年生黑麦草Lolium perenne,紫羊茅F. robra.牧草品种混播组合试验的结果表明:白三叶Trifolium repens 多年生黑麦草的组合适应性较好,白三叶 草地早熟禾Poa pratensis的产量较好.退耕还草不仅提高了经济效益,在当地干旱多风的自然条件下,还起到稳定保水、保肥、防风、固土生态屏障作用.
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| 关 键 词： | 退耕还草 引种 混播组合 |
| 文章编号： | 1001-0629(2004)12-0023-05 |
Analyse on benefits of grassland rehabilitation from crop field in Jinsha river basin |
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| WANG Ji-chun,LAN De-rong,LIANG Jin,BI Yu-fen,CHEN Gong,LUO Fu-cheng.Analyse on benefits of grassland rehabilitation from crop field in Jinsha river basin[J].Pratacultural Science,2004,21(12):23-27. |
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| Authors: | WANG Ji-chun LAN De-rong LIANG Jin BI Yu-fen CHEN Gong LUO Fu-cheng |
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| Institution: | WANG Ji-chun~1,LAN De-rong~1,LIANG Jin~1,BI Yu-fen~2,CHEN Gong~2,LUO Fu-cheng~2 |
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| Abstract: | The experiment of grasses rehabilitation from crop field was conducted in 2002 in Jinsha river basin which was located in Yiliang county of Zhaotong distict Yunnan provine. The sites were 2000m above sea level. 9 species and mixture combinations were used in the trials. The productive capacity such as above-ground-biomass, plant height and growing rate were analyzed in the year of 2003. The results showed that 9 species could survive from winter. These grasses had an advantage in productive characters and can be used as the species of planting grass in the local conditions. Festuca arundinacea F. and Promus inermis leyss B. were better than Lolium Perenne L. and Festuca rabra in the characters of growth and yields. The result showed that the combinations of Trifolium repens L. +Lolium Perenne L. had an advantage in adaptation and the combinations of Trifolium repeens L. +poa pratensis L. had an advantage in the vegetable yield production. The eco-environmental benefits of the cropland conversion was remarkable under the dry and windy conditions because the vegetation of the grassland have the ability of continuable , benign and cyclical hold water, thus to protect fertilizer and reduce the soil erosion. |
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| Keywords: | introduction of grassland rehabilitation from crop field grasses combination of mixed species |
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