几种优良人工牧草矿质元素含量的比较研究

就地上部而言,在3种豆科牧草中,白三叶以N、P、K、Fe、Co、Na含量较高,红三叶以Mg、Zn含量较高。在3种禾本科牧草中,鸭茅以P、K、Mg、Mn、Cu、Zn、Mo含量较高,草地早熟禾以Fe较高。3种豆科牧草N、Ca、Mg、V、Sr的平均含量显著高于禾本科牧草。地上部与地下部比较,豆科牧草的P、K、Ca、Mn、Zn、Na含量前者显著高于后者;禾本科牧草的N、P、K、B含量,前者明显高于后者。

A comparative study on the mineral element contents of some tame fine grasses

As regards aboveground portion,the N,P,K,Fe,Co and Na contents of Trifolium repens are high;the Mg and Zn contents of Trifolium pratense are high in 3 leguminous grasses.The P,K,Mg,Mn,Cu,Zn and Mo contents of Dactylis glomerata are high;the Fe content of Poa pratensis is high in 3 forage grasses.The average contents of N,Ca,Mg,V and Sr of 3 leguminous grasses are markedly higher than those of forage grasses.Compared aboveground with underground portion,the P,K,Ca,Mg,Zn and Na contents of the former are notably larger than those the latter in leguminous grasses;the N,P,K and B contents of the former are much larger than those the latter in forage grasses.