内蒙古阿拉善荒漠区60种牧草常量矿物质元素含量的分析研究

常量矿物质元素含量是影响牧草质量的重要因素之一,本文对内蒙古阿拉善额济纳荒漠区60种牧草进行了这方面的分析研究。得出的结果是,钙含量最高的是灰毛假紫简草(8.73%),最低的是拂子茅(0.031%);磷含量最高的是蓍状亚菊(0.258%),最低的是短叶假木贼(0.096%);镁含量最高的是沙拐枣(1.67%),最低的是麻黄和灌木铁线莲,均为0.11%;硫含量最高的是花花柴(3.28%),最低的是木紫菀(0.012%)。60种牧草中,含6种以上的科有禾本科、豆科、菊科、藜科和蒺藜科,其中每个科的钙、镁、硫、磷总量均值,蒺藜科居首位(3.86%),禾本科最低(0.75%).

Analysis of the Macro Mineral Elements Content of 60 Species of Herbages from the Alashan Desert District in Inner Mongolia

Macro mineral elements content is one of the important factors effect- ing the herbage quality,60species of herbage in Alashan desert district in Inner Mongolia were studied in this aspect.The results were that A- rnebia fimbriata Maxim had the highest Ca content (8.78%)and Cala- magrostis epigejos (L.) Roth had the least one (0.031%);Ajania achilloides(Turcz)Grub had the highest P content(0.26%)and An- abasis brevifolic C.A.Mey.had the least one(0.096%);Calligonum mongolicum Turcz.had the highest Mg content (1.67%),Ephedra sinica Stapf and Clematis fruticosa Turcz.had the least one(0.11%); Karelinia caspia(Pall.)Less.had the highest S content (3.28%)and Asterothamnus centraliasiaticus Novopokr.had the least one(0.012%). The families containing 6 species abovy in 60 species of herbage were Grass Family,Legume Family,Composite Family,Goosefoot Family and C- altrop Family in the average of lotal Ca.Mg.S.P.contents of every famtly Caltrop Family had the highest one(3.86%)and Grass Family had the lest one(0.75N).