不同生境芦苇的营养成分分析

Analysis of Nutrient Compositions of Phragmites Communis in Different Habitats

本文分析了分布在不同生境条件下的芦苇的营养成分，结果表明，（１）单位面积地上部生物量以沼泽芦苇为最高，沙丘芦苇次之，过渡带芦苇较低，盐化草甸芦苇最低；碳水化合物总量沙丘芦苇＞沼泽芦苇＞过渡带芦苇＞盐化草甸芦苇；粗蛋白含量由高到低顺序为：盐化草甸芦苇、沙丘芦苇、沼泽芦苇、过渡带芦苇。（２）４种生境芦苇的总氨基酸和游离氨基酸中均含有１８种天然氢基酸，其中１０种必需氨基酸含量因生境条件不同而备有差异。但总氨基酸及结构氨基酸中必需氨基酸含量均在１０％以上。由此得出，４种生境芦苇利用价值由高到低的顺序依次为：沙丘芦苇、沼泽芦苇、过渡带芦苇、盐化草甸芦苇。

Nutrient compositions of Phragmites communis habited in different environments were analyzed.Theresult showed that:(1)Biomass of Swamp reed was the highest,Sand dune reed the second,Salt meadowand sand dune transitional zone reed the thread.Salt meadow reed the lowest;Contents of carbohydratewere Sand dune reed.Swamp reed Salt meadow and sand dune transitional zone reed Salt meadow reed;Contents of Crude protein from high to low was Salt meadow reed,Sand dune reed,Swamp reed,and Salt0meadow a nd sand dune transitional zone reed.(2) Total amino acids and free amino acids of reeds habitedin different environments had 18 kinds of natural amino acids .contents of essential amino acids weredifferent due to various environments.Contents of essential amino acids in total amino acids and structuralamino acids were more than 40%. The results suggested that among 4 reed we use Sand dune reed first,then Swamp reed,and then Salt meadow and sand dune transitional zone reed, Salt meadow reed.