The Introduction And Selection Of New High Grade Garden Tree Varieties In Taiyuan City

On the main basis of "Ecology Similarity Theory",we introduce some excellent trees from neighboring regions which were no records of the cultivation in Taiyuan City for planting experiments.Through the phonological observation,we can find out the adaptability of trees,growth potential,resistance and ornamental,and choose the trees having a high level multiple indexes as well as fitting in Taiyuan City.To provide technical support to the scale of production,we carry out breeding experiments to master the technical reproduction. Providing excellent gardens trees so as to achieve to protect,improve and beautify the environment.The main result as followsrwe chose 48 kinds of trees in110 finally.One is apt to be used in big scope in garden forestation,Salix leucopithecia kimura,Salix leucopithecia var,Salix alba 'Tristis',Salix tortuosa,Ribes odoratum wendl,four kinds of Spiraea,Physocarpus luteas,Cotoneaster horizontalis Decne,eight kinds of Malus spectabilis,two kinds of Prunus persica,Robinia pseudoacacia 'Frisia',Ailanthus altissima cv.Hongye,Euonymus phellomanus loes,Euonymus maackii cv,Syringa reticulata cv,Ligustrum obtusifolium cv,two kinds of Caryopteris incanax three kinds of Weigela florida,two kinds of Lonicera,Sambucus canadensis 'Aurea',two kinds of Symphoricarpus albus(L.) S.F.Blake belongs to the former, but Pterocarya stenoptera C.Dc.,Euptelea pleiosperma Hook.F.et Thorns,one parts of the latter.The experiment make some innovations from two aspects:range being fixed by "New". and elected standard being provided by "Superiority".The "New" includes three aspects.It is good growth in the test area,and has excellent adaptation and resistance.Secondly,it has excellent ornamental.Third,it has powerful reproductive capacity and a stable character. Finally,it is easy to manage and popularize.It's advantageous for enriching the urban forestation tree,raising the biodiversity.It can protect the genetic diversity of trees and benefits to protective exploit important trees and study their life habits.It can raise the income of nursery stock producer,and offer more work for remainder laborer.Fifth,it will help enhance the image of the city,and improve the urban ecological security.At last,it can promote the science popularization;enhance the whole people environment protection.Innovations of the experiment is list below.first,it protect effectivinthe city ecology muliplicity.second,most types are the first time cultivated in taiyuan,third,treasures the part the trees to introduce for the first time to taiyuan to compare north latitide of country of origin to move degrees.Fourth,it introduce some from sub-tropics to taiyuan the first time. Fifth,compared with the original area,the test area having the highest altitude,least precipitation,shorstest non-frost period,strongest sunshine,its result is more representative, and supply move reference material for internal introduce a fine variety theory.The experiment a fine variety successfully carries on the promotion in the whole city and even the entire province.Apples to the city in the afforestation,serves for the ecology civilization construction.