外文翻译.doc

1、学号：0829024026 本科生毕业论文（设计）外文翻译题目： City greening projects the tree tansplant technology 院 （系） Agriculture and life sciences 专 业 班 级 Landscape agricluture 学 生 姓 名 Shang Zhongwen 指导教师（职称） Xu Yani（Senior Engineer） 提 交 时 间 May 2012 City greening projects the tree tansplant technology Zhao Hongmei（The ning

2、xia hui autonomous region persons plan forestry workstations,Ningxia lund，756300）Abstract The tree transplantation is urban landscape project of the key technology link. From the tree before transplantation of preparation and transplantation of tree planting, dig and after transplantation for mainte

3、nance and management of links such as tree transfer technique is introduced, and thought that urban greening trees transplantation to provide the reference . Key words City green The tree Transfer technique With the development of social economy, the tree transplantation has become a city green, the

4、 United States indispensable means and measures. Urban and rural afforestation trees planted in the method of commonly used to adorn district scenic spots, and enhance the afforestation effect. The tree transplant requires investment more human, mechanical equipment and capital, it is a high technol

5、ogy content of the project. Now the transplanted technology are presented here.1.The tree is the preparation for transplantation1.1 The tree transplanted before processingTrees selected to transplant in the north trunk with paint to make obvious mark, in order to determine the trees Yin and Yang noo

6、dles. Determine the transplant seedlings before transplantation in according to the specific conditions have clip, such as cutting, eliminate technology processing, bare root transplant generally take heavy clip, to cut the branches 1/3 to 1/2. Take the ball can be appropriate light transplant cut,

7、cut to a third of branch can. Cut cut when mouths must be smooth, section narrow as far as possible, clip 2cm thick above branches. Evergreen trees before transplantation generally does not need clip, evergreen trees while pruning should stay 1 2cm some wood, and may not stick root cut. Cut the mout

8、h should daub preservatives or paint, or in plastic wrap, in case of diseases and pests violations and decay.1.2 Plant hole to prepare and soil treatmentAccording to the specifications of the hole of planting the trees planted the size of a soil to decide, than the big tree roots picture should be b

9、ig tuo soil or 60 80 cm, deep 20 30 cm, the pit wall shall be smooth vertical, pit is dug well bottom backfilling 20 30 cm. Plant soil to choose the water and fertilizer, gas and heat condition good soil. General use sand mix loess (2:1) as transplanting the soil after they colonize is good, one is

10、the roots and affinity. In the big tree planting, sediment mix loess easy and paste it roots; 2 it is the atmosphere is good, can increase the temperature, promote the sprout of root system; Three is drainage performance is good. The rainy season can quickly row off excess water, water during the dr

11、y season can absorb quickly, spread.2. Transplantation of mining and planting trees2.1 Trees transplant timeThe tree in the trees to transplant dormant, spring and autumn season 2 all can, to the spring tree before flow is the best. In the north of China for late march and April occurrence peak, thi

12、s time the trees also in dormancy, tree SAP has not flow, the best season for transplantation trees. 2.2 Transplant tree miningMining bare root seedlings, the first to ensure the seedling root less damaged. Bare root mining is applicable to survive easily, diameter at breast height 10 to 20 centimet

13、ers of deciduous trees, a range of root on the root distribution and decide, for the average DBH of 8 10 times, and along the root of dig under the vertical to see root shall prevail, general deep 80 120 cm. Mining process, root in thick with sawn cut, in order to avoid splitting the roots. When the

14、 lateral root all after digging, knocking down and cut off the tree root, try not to root damage skin and they 3. For green trees and not easy to survive deciduous trees, transplanting must take the ball, soil ball diameter of the trunk DBH 7 to 10 times or so, the ball can be in good soil, level of

15、f. The whole earth up to the big lump under small cone, soil with grass ball curtain or grass to MiMi bound tightly to prevent soil ball broken apart. Crane crane seedlings, wire rope and soil surfaces in 3 cm thick ball placed pieces of wood, in order to prevent the soil for local stress ball and t

16、oo loose. If some of the tree root is sandy loam soil, cant use grass bound bundles, need large wooden boxes (DaZhu basket) device, make the ball is not easy to spread out, in order to transport.2.3 Tree transportationIn the transport of the tree to prevent the tree branches fold the injury, the tree ha