小麦族10种禾草叶片可消化性及矿物质含量的差异

利用扫描电镜及能量分散型荧光X射线新技术分析小麦族10种多年生禾草叶片的可消化性和矿物质含量.结果表明,供试草种叶片可消化性的高低顺次是:老芒麦>野大麦>航道冰草=加拿大披碱草>蒙农杂种冰草>诺丹冰草>肥披碱草≥新麦草=披碱草>蒙古冰草.叶片中7种矿物元素含量变幅为:Mg 0.21%～0.57%、Si 0.90%～3.31%、P 0.27%～0.3%、S 0.3%～0.0%、Cl 0.21%～0.52%、K1.44%～3.0%、Ca 0.42%～0.98%,草种间差异显著.

Differences of Leaf Digestibility and Mineral Content Among 10 Grasses of Triticeae

The leaf digestibility and mineral content of 10 grasses of Triticeae were analyzed by using scanning microscope and energy dispersive X ray technique.The order of leaf digestibility of the grasses was Elymus sibiricus>Hordeum brevisubulatum>Agropyron cristatum cv.‘Fairway'= E.Canadensis>A.cristatum×A.desertorum cv.‘Hycrest Mongnon'> A.desertorum cv.'Nordan'> E.excelsus≥Psathyrostachys juncea=E.dahuricus>A.mongolicum. The mineral element content range in the leaves of the tested grasses was Mg 0.21%～0.57%,Si 0.90%～3.31%,P 0.27%～0.36%,S 0.36%～0.60%,Cl 0.21%～ 0.52%, K 1.44%～3.06%,Ca 0.42%～0.98%,and the differences among the grasses were significant.