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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(Pennisetum purpureum Schum cv.Guimin)、王草(Pennisetum 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%。
In order to screen the grassy cultivars suitable for planting in the northern part of Guangxi, the test was conducted in 2012 to 2014 in Pengyetun, Baise, Guangxi, China. The effects of Pennisetum purpureum Schumab cv. Purple, purpureum Schum cv. Guimin, Pennisetum purpureum Rich × P. mericana King grass cv. Reyan No.4. The plant height, yield, stem-leaf ratio, nutrient content and the like were determined. The results showed that: the average annual yield of purple grass was 141.4 t / hm2, 2.3 t / hm2 higher than that of king grass, both of which were lower than those of Gui-min. The ratio of stems and leaves of purple grass was the lowest, 1.17, Fujian index grass 17.8% lower, significant difference (P <0.05), indicating purple elephant grass leaf abundance; nutrition, purple grass except crude protein slightly lower than the king grass, the other indicators were more than king grass and Guangxi The image grass excellent, containing 26.6% dry matter, nitrogen-free extract 39.1%, crude fat 2.9%.