Investigation And Research On Soil Environment And The Suitability Of Camphor Tree Growth In Xuzhou

Soil is an important factor for plants survival and growth.Different plants depend on different soil conditions.As a city in the northwest of jiangsu province,Xuzhou is located in the buffer zone between the eastern coast and the western inland areas.In recent years,Xuzhou city has continuously strengthened the construction of ecological garden city,and completed the transformation from "one city with coal ash and half city soil" to "one city with green mountains and half city lake",among which garden trees play a crucial role.For a long time,due to the influence of natural conditions,traditional ideas and many other factors,the landscape of plants,especially in winter,is relatively monotonous,with more deciduous trees and less evergreen trees.In terms of road trees,only two roads of suti south road and jianguo west road adopted evergreen tree privet,while the other roads were all deciduous trees,and the main tree species used were sycamore-tree,locust tree,poplar and willow.In recent years,citizens of Xuzhou have been suffering from the problems of poplar catkins,willow catkins and fattongqiu.These tree species are difficult to adapt to the development of the city and pose a certain threat to the health of urban residents.It is urgent for Xuzhou to replace evergreen tree species to solve this problem.As camphor tree is evergreen broad leaved tree species of our country urban and rural greening tree species,economic tree species of precious and timber tree.At the same time,camphor tree nearly perfect landscape characteristics,strong ecological and environmental functions,rich cultural connotation,also make it the best choice for evergreen tree species in winter.In view of the current ecological garden city construction demand of Xuzhou,if camphor tree can be widely used in large area of Xuzhou street trees,landscape trees and court shade trees and ornamental forest planting,not only can enrich the local landscape,also can improve the ecological effect of green space system,at the same time also can work for "south north"provides a rich and valuable experience.Although camphor is not strict with soil,it prefers deep fertile soil,neutral or acidic sandy loam,light sandy loam of yellow soil and alluvial soil of red and yellow soil.Therefore,the soil of different texture also presents obvious difference to the growth of camphor tree.At present,Xuzhou area for soil environmental suitability camphor tree growth related research is less,for further mastery of Xuzhou city soil environment on the overall status of the growth of the camphor tree suitability to the "south north" work provide a reference basis,promote the north region of evergreen tree is grown in the local application research,the author of Xuzhou six different types of green space of soil physical,chemical,physical and chemical properties of correlation system is analyzed.At the same time,according to Xuzhou soil types,distribution and growth of camphor tree,to take to set the typical samples,camphor tree growth and camphor leaves soil samples,carry on the physical properties,chemical index,camphor leaf physiological and biochemical index determination,analysis of Xuzhou urban garden green land,sand loam soil texture to powder,powder(sand)mass of clay,loam and glue(sand)qualitative loam is given priority to,the overall density is larger;Soil permeability is poor.Soil field water holding capacity is low;Soil has medium or high fertility;Soil salt content will not affect the growth of green plants;The content of soil organic matter is low.Soil alkaline;Although the content of available potassium is rich,the content of hydrolytic nitrogen and available phosphorus is low.In short,most of the soil of Xuzhou urban green space is not very suitable for the growth of camphor trees.