摘要
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%).
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).
