摘要
作者1982～1986年在青海省海北高寒草甸生态系统定位站对天然垂穗披碱草(Elymus nutans)种群的生长节律、生物量季节和年度动态,以及主要生态因子与垂穗披碱草生长发育的关系进行的研究表明,该种群地上各器官的生物量从返青到完熟一直处于不断增长的过程,9月初达极大值,9月中旬开始减少。种群地上净生物量以生育第三年最高,生长速率以拔节后期至开花期最大,作为青干草或青贮利用以乳熟期(8月中旬)刈割为宜。该草对水热条件要求不高,适于在高寒地区栽培。
The seasonal and annual changes of natural Elymus nutans population biomass and growth rhythm had been studied at Haibei research station of alpine meadow ecosystem in Qinghai province from 1982 to 1986.The ralation of Elymus nutans growth and development with main ecological factors were studied also.The results showed biomass of various organs increased gradually from turning to ripe, biomass got maximum in the middle of September.Net above ground biomass got the highest in the third years, the rate of growth was most rapidly in jointing stage, cutting it as dry green grass and ensilage is suitable in milk-ripe stage.This plant requires a few of water and temperature, so it is suitable for cultivation in the alpine area.
出处
《中国草地》
CSCD
1990年第1期18-25,共8页
Grassland of China
