根茎类型牧草的地上生物量和矿质元素累积

The Aboveground Biomass and Nutrient Element Accumulations of Rhizomatous Grasses with Different Type Rhizoma

研究了羊草、赖草和中间偃麦草等根茎禾草干物质及N、P、K的累积规律。结果表明，3种禾草的地上生物量和大量元素的累积规律相近；短根茎的中间偃麦草具有较高的生物量和N、P、K的累积量，而根茎较长的羊草和赖草间则在这些项目上差异不大。

In this study, aboveground biomass, N, P and K accumulations of three grasses were investgated. The accumulative laws of aboveground dry matter and N, P and K between three grasses. Thinopyrum intermedium with short rhizoma had higher aboveground N, P and K accumulations relatived to Leymus chinense and Leymus dasystachys with long there were no differences of these items between Leymus chinense and Leymus dasystachys.