| 几种象草在桂北地区的种植表现 |
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| 引用本文： | 邓素媛,易显凤,赖志强,姚娜,庞天德,韦锦益,史静,曹树威.几种象草在桂北地区的种植表现[J].农业科学与技术,2016(12). |
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| 作者姓名： | 邓素媛 易显凤 赖志强 姚娜 庞天德 韦锦益 史静 曹树威 |
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| 作者单位： | 广西畜牧研究所,广西南宁,530001 |
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| 基金项目： | 广西科技重大专项(桂科AA16380026)；国家现代农业产业技术体系广西创新团队建设专项(nycytxgxcxtd-09-04)；南方高产牧草草产品加工及应用示范(桂渔牧科201633019)。Supported by Major Project of Science and Technology in Guangxi Zhuang Autonomous Region(GK AA16380026)，Special Fund for lnnovation Team Building in Guangxi Zhuang Autonomous Region from Modern Agricultural lndustry Technology System of China(nycytxgxcxtd-09-04)，Project of Processing and Application Demonstration of High-yielding Forage Grass Products in South China(GYMK 201633019) |
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| 摘 要： | 为了筛选出适合种植于桂北地区的象草品种，试验于2012～2014年，在桂北地区的广西百色凌云县对紫色象草(Pennisetum purpureum Schumab cv. Purple)、桂闽引象草(P. purpureum Schum cv. Guimin)、王草(P. purpureum Rich ×P. americana King grass cv. Reyan No.4)进行了种植比较试验。测定了株高、产量、茎叶比、营养成分等。结果表明：紫色象草平均年产鲜草141.4 t/hm2，比王草高2.3 t/hm2，二者均低于桂闽引象草；紫色象草的茎叶比最低，为1.17，比桂闽引象草低17.8%，差异显著(P<0.05)，说明紫色象草叶量丰富；营养方面，紫色象草除了粗蛋白略低于王草之外，其他指标均较王草和桂闽引象草优，含干物质26.6%、无氮浸出物39.1%、粗脂肪2.9%.
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| 关 键 词： | 牧草 紫色象草 产量 茎叶比 营养成分 花青素 广西桂北地区 |
Planting Performance of Several Elephant Grass Species in Northern Guangxi Zhuang Autonomous Region |
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| Abstract: | This study aimed to screen suitable species of Pennisetum purpureum for planting in northern Guangxi Zhuang Autonomous Region. During 2012-2014, a comparative field trial was carried out in Lingyun County of Baise City in northern Guangxi to compare plant height, yield, stem-leaf ratio and nutrient composition am-ong Pennisetum purpureum Schumab cv. Purple, P. purpureum Schum cv. Guimin and P. purpureum Rich × P. americana King grass cv. Reyan No.4. The results in-dicated that average annual fresh yield of P. purpureum Schumab cv. Purple reached 141.4 t/hm2, which was 2.3 t/hm2 higher than that of P. purpureum_Rich×P. americana_King grass cv. Reyan No.4; both average annual fresh yield of these two species was lower than that of P. purpureum Schum cv. Guimin. Stem-leaf ratio of P. purpureum Schumab cv. Purple was the lowest (1.17), which was 17.8% lower compared with P. purpureum Schum cv. Guimin, with significant differences (P<0.05), indicating that P. purpureum Schumab cv. Purple had more leaves. Crude protein content of P. purpureum_Schumab cv. Purple was slightly lower than that of P. purpureum Rich ×P. americana_King grass cv. Reyan No.4, while P. purpureum Schumab cv. Purple was superior to P. purpureum Schum cv. Guimin and P. pur-pureum Rich ×P. americana_King grass cv. Reyan No.4 in other indicators. Specifi-cal y, P. purpureum Schumab cv. Purple contained 26.6% of dry matter, 39.1% of nitrogen-free extract and 2.9% of crude fat. |
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| Keywords: | Forage grass Pennisetum purpureum Schumab cv Purple Yield Stem-leaf ratio Nutrient composition Anthocyanin Northern Guangxi Zhuang Autonomous Region |
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