【摘要】 本文研究了四合木在宁夏草地的分布、群落类型和经济价值。结果表明：分布在宁夏草地的四合木及其群落是我国四合木及其群落分布的最南端。其群落类型属草原化荒漠，群落地理成分具明显的湿带性。四合木初花期叶中含氨基酸8mg／100mg，其中必需氨基酸占所含氨基酸总量的41．41％。药用成分预试表明，其叶中主要含有生物碱、黄酮类、甾醇类、有机酸和酸性化合物。通过11种化学元素含量的测定，四合木屑富Ca植物。更多还原

【Abstract】 The distribution, cenotype and economic va1ue of Tetraena mongolica Maxim. in Ningxia had been studied. The results show that Ningxia is the southernmost area of the distribution of Tetraena mongolica in China. The cenotype belong to steppe-desert and the geographic composition of the communlties has the obvious characters of temperate zone. The amino acids content in leaves is 8mg/100mg and the essential arnino acids is about 41.1 % of the total arnino acids in the early florescence. The medical composition test shows that it contains alkaloid flavone ,sterol, organic acid and phenol compounds in leaves. The analysis on 11 elements shows that the Tetraena mongolica is one of the calcicolous plant.更多还原