Planting Performance of Several Elephant Grass Species in Northern Guangxi Zhuang Autonomous Region  

几种象草在桂北地区的种植表现（英文）

作　　者：邓素媛 易显凤 赖志强 姚娜 庞天德 韦锦益 史静 曹树威 

机构地区：[1]广西畜牧研究所,广西南宁530001

出　　处：《Agricultural Science & Technology》2016年第12期2784-2787,2791,共5页农业科学与技术（英文版）

基　　金：Supported by Major Project of Science and Technology in Guangxi Zhuang Autonomous Region(GK AA16380026);Special Fund for Innovation Team Building in Guangxi Zhuang Autonomous Region from Modern Agricultural Industry Technology System of China(nycytxgxcxtd-09-04);Project of Processing and Application Demonstration of High-yielding Forage Grass Products in South China(GYMK 201633019)~~

摘　　要：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 ＆#215; 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/hm^2 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.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/hm^2,比王草高2.3t/hm^2,二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%.

关 键 词：Forage grass Pennisetum purpureum Schumab cv. Purple YIELD Stem-leaf ratio Nutrient composition ANTHOCYANIN Northern Guangxi Zhuang Autonomous Region 

分 类 号：S543.9[农业科学—作物学]