百喜草不同生育期营养成分变化及动态研究  

A Study on the Changes and Trends of the Paspalum notatum flügge's Nutritional Components in Different Growing Periods

作　　者：易永艳[1] 江生泉[1] 李德荣[1] 

机构地区：[1]江西农业大学农学院,江西南昌330045

出　　处：《江西农业大学学报》2006年第5期658-661,共4页Acta Agriculturae Universitatis Jiangxiensis

基　　金：国家"八五"科技攻关项目(85-606-25-01)

摘　　要：对百喜草生长期的营养动态进行了初步研究,结果表明:百喜草的主要营养成分蛋白质、脂肪、碳水化合物及钙、磷等含量丰富,含量随生长发育阶段的不同有所变化,并呈现一定的规律性。百喜草苗期营养价值最高,其粗蛋白和粗脂肪含量为15.93%和5.34%,但鲜草期产量低;进入旺长期后,枝叶繁茂,鲜草产量迅速提高,养分含量也较高,其粗蛋白和粗脂肪含量为11.55%和4.67%,是作青饲料的最好时期。对百喜草各营养成分与各生长期的动态的拟合回归方程分析,呈极显著水平(除钙外);同时对各营养成分之间的相关分析,可用来观测各营养成分变化的相关性,另一方面也是我们合理利用百喜草为牧草的依据。The nutritional components＇ trends of Paspalum notatum fluegge in it＇s growing periods are investigated preliminarily. The results show that the contents of the main nutritional components of protein, fat, carbohydrate, Ca and P are very rich in Paspalum notatum flueigge. These nutritional components are different in content in different growing periods and change regularly. When Paspalum notatum flueigge is in its seedling period ,its crude protein makes 15.93% and crude fat makes 5.34% , while the output of fress grass is low. In its fast growing period, the output of fresh grass increases rapidly with high nutrition contents that crude protein is 11.55% and crude fat is 4.67%. It is the best time for fresh forage. The dynamic changing curve of the nutritional components of Paspalum notatum fluegge in different growing periods and the modeled regression equation show significant correlation coefficients except calcium; meanwhile the nutritional components are analyzed in order to observe the changes of them and use Paspalum notatum fluegge rationally.

关 键 词：百喜草 生育时期 营养成分 动态研究 

分 类 号：S543.9[农业科学—作物学]