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沙生饲用灌木树种的适应性评价

Adaptability and Evaluatiion of Psammophyte Forage Shrub

  • 摘要: 试验对5个沙生灌木树种的引种、生物量、抗旱性、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。结果表明:花棒、梭梭和乔木状沙拐枣不同产地间在高生长、地径生长两个性状上差异显着;乔木状沙拐枣和杨柴的地上生物量低于多枝怪柳(对照)10.69%和18.87%,花棒、梭梭、毛条分别高于对照16.98%、27.04%和2.64%.所选5个树种7项生态生理综合指标反映的抗旱性均高于对照树种二白杨和小叶杨;适于在乌兰布和干旱环境中生长;粗脂肪、租纤维和无氮浸出物高于传统饲料

     

    Abstract: 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.

     

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