沙生饲用灌木树种的适应性评价

试验对５个沙生灌木对种的引种、生物量、抗旱笥、饲料成分及营养价值作了测试和分析，并与乌兰布和沙漠传统饲用灌木、牧草、农副产品饲料进行了比较。表明；花棒、梭梭和乔木状沙的另枣不同产地间在高生长，地径生长两个性状上差异显著；乔要森太沙拐枣和杨柴的地上生物量低于多枝柽柳１０．６９％和 １８．８７％，花棒梭梭、毛条分别于对照１６．９８％和２７．０４％和２．６４％。

Adaptability and Evaluatiion of Psammophyte Forage Shrub

A comparison was made on the adaptability,biomass,drough-tolerance,forage composition and nutritive values between 5 psammophyte shrub species and the traditional forage shrub and forage grass species in Wulanbuhe Desert.he results showed that therewere sigriificant differences in height growth and above-ground growth between Hedysaru mscoparium,Haloxylon ammodendron and Calligonum arborescens of different production areas;the above-ground biomass of both ,C.arborescens and H.fruticosum var. monglicum were lower than that of the control(Tamarix ramosissima)by 10.69%and 18.87%,but that of H.scorparium,H.ammodendron and Caragana korshinskii was higher than that of the control by 16.98%,27 04% and 2.64% respectively.The drought tolerance of the selected 5 tree species was higher than that of Populus gansuensis and P.simonii,and the coarse fat,coarse fibre and non-nitrogen exudate of their leaves were higher than those of poplar,willow and ulmus. Their forage composition and nutritive values were also higher than those of the traditional forage crops,so the cultivation of psammophyte shrub species is reliable method to develop animal husbandry.