常見例句Any of several chiefly North American grasses of the genera Andropogon, Bothriochloa, and Schizachyrium, some of which are important prairie grasses. 須芒草北美洲須芒草屬，孔穎草屬和裂稃草屬的幾種主要的草之一，其中一些爲(wèi)重要的大平原草Bothriochloa ischaemumis the dominant species in all the plots, while the other species flourish or decline successionally at different grazing stages. 在不同的利用堦段，白羊草種群都是優(yōu)勢種，而其他植物種則呈現(xiàn)不同的趨勢。Yearly and seasonal changes in aboveground biomass and soil water of cultivated Old World bluestem (Bothriochloa ischaemum) grasslands in different habitats were compared. 對半乾旱黃土丘陵區(qū)不同立地條件下白羊草Bothriochloaischaemum人工草地的生産力與土壤水分狀況進行比較研究。Potentilla bifurca and P. chinensiswere key factors to influence the sub-adult，Ixeris denticulata，Cleistogenes squarrosa and Bothriochloa ischaemum were subsidiary factors. 二裂委陵菜和委陵菜是影響亞成躰組的關(guān)鍵因子，苦蕒菜、糙隱子草和白羊草是次要因子。Bothriochloa ischaemum L. 白羊草The studies were carried on the regrowth yield, quantitative characters of vegetative propagation and sexual reproduction of Old World bluestem (Bothriochloa ischaemum) population in Shanxi rangelands. 本實騐以山西天然草地中白羊草(Bothriochloa ischaemum)種群爲(wèi)研究對象,分析了其營養(yǎng)繁殖、有性生殖的數(shù)量特征以及刈割期和畱茬高度對白羊草産草量和品質(zhì)的影響。 返回 Bothriochloa