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Primary study on introduction experiment of 14 tree species for afforesting in Yinchuan of Ningxia

Cao Bing,Song Lihua,Ma Guobin,Li Yanfei(School of Agriculture,Ningxia University,Yinchuan 750021,China)  
The introduction experiment of 14 tree species for afforesting was introduced into Yinchuan with their seedlings introduced from Henan province.According to the survival rate,over-winter preserving rate,phenology and growth situation of the introduced seedlings,the seedlings' growth performance of Prunus×Cistena 'Pissardii',Ailanthus altissima.'Hong Ye' and Sophora Japonic.'Golden Stem' were great in the experimental site,because their over-winter preserving rates were higher but branch withering rates were liver.But the seedlings growth performance of Euonymus japonicus L.f.aureo-marginatus Rehd.,Berberis thunbergii.'Aurea' and Forsythia koreana.'Sun Gold' were not good because of lowest preserving rates,and the seedlings' growth performance of other tree species(Aesculus×carnea 'Briotii',Forsythia koreana.'Aureo-reiticulata',Sambucus canadensis.'Aurea',Euonymus japonicus.'Cu zhi',Acer×freemanii-Jeffersred,Cotinus coggyria.'Royal Purple',Adinandra millwttii,Ginkgo biloba L.) were not too bad that they need special protection for over-winter.Further research for this introduction experiment is still on going.
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