白羊草

白羊草；叶绿素荧光；土壤养分；旱后复水；

Bothriochloa ischaemum ; Chlorophyll fluorescence ; Soil nutrient ; Rehydration after drought stress ;

轮作改变了氨挥发速率的变化规律，现蕾期比连作高2.1倍，开花期比连作低18.0%。白羊草与隐子草在抽穗期的CPD高于开花期，但低于拔节期。

Compared to the ammonia loss of the continuous cropping plot during its budding stage , that of the rotation plot in the same growth period is 2.1 times higher , while during the blooming stage , the ammonia loss of the latter is 18.0 % less than the former .

白羊草灌丛草地优势种牧草营养物质及瘤胃降解动态研究

Study on Nutrients of Dominant Species of Forage and Dynamics of the Rumen Degradability in Old World Bluestem Shrub Rangeland

半干旱黄土丘陵区白羊草人工草地生产力和土壤水分特征研究

Aboveground productivity and soil water characteristics of cultivated Old World bluestem grassland in semi-arid loess hilly-gully areas on the Loess Plateau

试验结果表明：1、白羊草灌丛草地以建群种白羊草的优势度最高，其次是苔草、隐子草、达乌里胡枝子等。

Results showed that 1 old world bluestem which mainly constitute the old world bluestem Shrub Grassland , had highest degree of dominate , sedge ( Carex spp. )

组成白羊草草地的牧草种类较多，有22科74种牧草，且种的饱和度大，平均每平方米有26种牧草；

The kinds of forages on the Old World bluestem rangelands were 22 families , 74 species . There were 26 species in per meter square and the species saturation was large .

主要结果如下：1.不论在单播或者二者混播条件下，水分胁迫均显著降低白羊草与达乌里胡枝子生物量，且白羊草对水分胁迫的响应更敏感。

The main conclusions were as follows : 1 . Whether in monoculture or mixtures , water stress decreased biomass production of both species and the old world bluestem was more sensitive to water deficiency .

从白羊草群落牧草的返青到枯萎，不同时期均有不同牧草可供放牧利用，但以8月份为最佳利用时期。

Though there were different plants , which could be grazed by beasts in different stages from return green to wither of old world bluestem Shrub Grassland , it is most suitable for grazing in August .