黔西北高原引种优良牧草持久性研究

Research on the Persistence of Introduced Pasture Species in the Northwest Guizhou Plateau

对1985年引种栽培的14种禾本科和豆科牧草的观测研究表明,在放牧管理及当地生态条件下,引种牧草历经9年以后,干物质产量仍然保持较高水平的牧草种为鸭茅和紫羊茅,其次为多年生黑麦草、高牛尾草、早熟禾和白三叶。引种牧草竞争力最强的牧草种为鸭茅和紫羊茅,其次为早熟禾、高牛尾草、多年生黑麦草和白三叶。而侵入性最强的牧草种为白三叶和黑麦草,两者的干物质产量之和占侵入草总量的99%。

Since 1985 14 species of grasses and legumes have been introduced and observed on the condition of local environment and rotational grazing. The results showed that(1) The species having higher pasture production are Cocksfoot grass and Red rescue, followed by Italian ryegrass, Tall rescue, Bluegrass and White clover;(2) The species having stronger competitive ability are also Cocksfoot grass and Red rescue, followed by Blue grass, Tall Fescue, Italian ryegrass and White clover;(3) The pasture species with strongest invasion are white clover and Perennila ryegrass, their yield is 99% of total yield of all intrusive species.