| 岩溶石漠化区牧草植物地上部分生物量的动态变化 |
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| 引用本文： | 韦兰英,袁维圆,尤业明,焦继飞,张建亮,黄玉清.岩溶石漠化区牧草植物地上部分生物量的动态变化[J].草业科学,2009,26(10):73-79. |
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| 作者姓名： | 韦兰英 袁维圆 尤业明 焦继飞 张建亮 黄玉清 |
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| 作者单位： | 广西壮族自治区中国科学院,广西植物研究所,广西,桂林,541006;广西壮族自治区中国科学院,广西植物研究所,广西,桂林,541006;广西师范大学,广西,桂林,541004 |
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| 基金项目： | 广西重大科技成果引进与产业化示范项目，国家科技支撑计划项目 |
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| 摘 要： | 以菊苣Cichorium intybus、杂交狼尾草Pennisetum americanun×P.pureum、类玉米Zea diploperennis、混播牧草（菊苣、杂交狼尾草和柱花草Stylosanthes guianensis cv.Reyan No.2）、黑麦草Lolium perenn、紫花苜蓿Medicago sativa和白三叶Trrifolium repens为对象，研究了其地上部分生物量的动态变化以及刈割时株高与产量大小的关系，旨在为岩溶石漠化区选择适宜的牧草种类以及牧草的合理种植提供科学依据。结果表明，刈割高度对杂交狼尾草、类玉米、黑麦草和白三叶产量均有显著影响，而对菊苣、混播牧草和紫花苜蓿的影响较小。不同刈割时期牧草鲜、干草产量有显著差异，表明各种牧草无论是鲜草产量还是干草产量均有明显的季节变化。杂交狼尾草适于在牧草高产季节用于青贮，是解决冬季缺草的有效途径之一。仅刈割了3次的类玉米除7月鲜、干草产量与菊苣和杂交狼尾草差异不大，8月与10月鲜、干草产量仅为菊苣和杂交狼尾草的50％和30％。与单播牧草相比，混播牧草具有产量较为稳定的优势。类玉米死亡后轮作的黑麦草、混播牧草死亡后轮作的紫花苜蓿以及同期种植的白三叶均可以作为轮作牧草，不仅可以充分提高土地的利用价值，而且可以丰富牧草种类，是春秋季畜禽的良好草质资源。
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| 关 键 词： | 株高 产量 动态变化 岩溶石漠化区 |
Dynamic changes of the aboveground biomass of several forages in karst rocky desertification area |
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| WEI Lan-ying,YUAN Wei-yuan,YOU Ye-ming,JIAO Ji-fei,ZHANG Jian-liang,HUANG Yu-qing.Dynamic changes of the aboveground biomass of several forages in karst rocky desertification area[J].Pratacultural Science,2009,26(10):73-79. |
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| Authors: | WEI Lan-ying YUAN Wei-yuan YOU Ye-ming JIAO Ji-fei ZHANG Jian-liang HUANG Yu-qing |
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| Institution: | WEI Lan-ying1,YUAN Wei-yuan1,2,YOU Ye-ming1,JIAO Ji-fei1,ZHANG Jian-liang1,HUANG Yu-qing1(1.Guangxi Institute of Botany,Guangxi Zhuang Autonomous Region , Chinese Academy of Sciences,Guilin 541006,China,2.Guangxi Normal University,China) |
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| Abstract: | The aboveground biomass dynamic and the relationship between plant height and yield of Cichorium intybus, Pennisetum americanun×P.pureum, Zea diploperennis, Lolium perenne, Medicago sativa, Trifolium repens, mixed cultivation of C. intybus, P. americanun×P.pureum and Stylosanthes guianensis cv. Reyan No. 2 were studied in karst rocky desertification area to provide a scientific basis for selecting the suitable forage species and cultivating techniques. The results showed that the harvesting height significantly affected the yields of P. americanun×P.pureum, Z. diploperennis, L. perenne and T. repens, but little influence on that of C. intybus, the mixed cultivation and M. sativa. The difference of fresh and dry matter yields at different harvest times was significant, indicating that both fresh yield and dry yield had obvious seasonal variation. In which, C. intybus was a high productive forage. P. americanun×P.pureum was productive and high quality and suitable fro making silage. The yields of Z. diploperennis in August and October accounted for only 50％ and 30% of C. intybus and P. americanun×P.pureum respectively. The yield of mixed cultivation was stable compared with the monoculture. L. perenne, M. sativa and T. repens could be used as rotation crops for fully using the land resource and increasing the forage supply in spring and autumn. |
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| Keywords: | plant height yield dynamic change karst rocky desertification |
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