The Present Applied Situation And Developing Foreground Synthetic Estimate Of Acer Negundo

This dissertation is according to the current interior and abroad ecological urban garden building and tendency of environment landscape developments, combine the knowledge of the afforesting development especially the species demand in the interior and abroad town, under the general investigation about the introducing history of Acer negundo and the present application situation, by means of analysing the present application situation and the problem about it, and takes that the specialist consulting means which evaluated, assess the application value of Acer negundo once more from the trees resist of cold, drought, poilution,disease,insect pest to the effect of beauty and ecology and afforested application cost, and so on. It is think as a good introduceing species of synthetical usefulness that Acer negundo growth conduct aspects in Harbin is regular over a long period and adapt to Harbin's climate.For example it germinate early,endure pruning,resistance is powerful,its trunk is straight,branches and leaves are thick,big crown,compound leaf and red stem,the fruit like knife,afforesting and beautifying effect are both fine,it is become a acceptting species by people who love it and enjoy it. If we strengthen the preventing and curing work against diseases and insect pests, it will be the distinguishing species that fit subsequent city development.Aim at its defects, propose the ambient condition that can build the varied species of plant,establish the all-sided and scientific bringing up norm and criterion,establish and amplify the plant protection information network, strengthen prevention and curing work about plant diseases and insect pests with new concept, by means of introducing and breeding a good variety, enrich the urban plant species, enlarge the area of nursery, strengthen direction to grow seedlings scheme, speed up the manufacturing, establishing the urban afforesting proposals and the measures such as species resources informations system and so on. The researching conclusion supplys technique and theory guidance to the species application scheme to build ecologic garden city in Harbin and supply the bases of planting material plan and clarify new concept of how to treat external species and variety quality of living beings correctly.It is positive to beautify Harbin landscape. It also offers correlative theory directions and demonstrations to other cities of the same area. It supplys directive advices to manufacture of the Acer negundo to avoid the blindness of manufacture and application.