不同生长年限威宁草芦营养成分动态研究  

Dynamic Study for Nutrient Compositions in the Different Growth Apprenticeships in Kalst Area

作　　者：陈超[1] 龙忠富[2] 刘正书[2] 

机构地区：[1]贵州大学动物科学学院,贵阳550025 [2]贵州省草业研究所

出　　处：《贵州畜牧兽医》2008年第1期6-8,共3页Guizhou Journal of Animal Husbandry & Veterinary Medicine

摘　　要：对生长1～4年的威宁草芦牧草新品种不同生育时期营养成分进行动态测定。结果表明：不同生长年限威宁草芦的蛋白质、粗灰分含量都是随着生育时期的推后呈线性下降（P〈0．05），酸性洗涤纤维和粗脂肪含量随着生育时期的推后呈线性上升（P〈0．05），无氮浸出物的含量变化与生育期无明显相关，粗蛋白含量随着生长年限的推后逐渐下降，而磷、钙含量则以四年生最高；1～4年生分蘖期至抽穗期粗蛋白含量在13．42％～16．96％之间，而粗纤维含量在21．03％～32．88％之间，是西南地区优质地方牧草新品种，具有广泛的推广应用前景。The content of the nutrient compositions in different year and growth stage of the reed canary grass that was cultured and selected in a long period by Herbage Institute of Guizhou Province were determined . The results showed that ： （ 1 ） The content of crude protein and crude ash declined linearly with the passing of growth stage （ P 〈 0. 05 ）. but contrary results appeared with acid detergent fibre and crude fat （ P 〈 0.05 ）. （2） The content change of extracts of nitrogen - free had not obvious relationships with the growth stage. （3） The content of crude protein declined with the passing of growth year. （4） The highest content of Phosphorus and Calcium appeared in the reed canary grass of four years.

关 键 词：威宁草芦 生长年限 营养成分 动态分析 

分 类 号：S567[农业科学—中草药栽培]