The Effect Of Different Improvement Measures On Soil Quality And The Growth Of Sophora Japonica

At present,With the deepening development of urban landscape,landscape change frequently,the street green space soil is affected by human disturbance and pollution is more and more,in the absence of strong rules of the case,the whole city street green land degradation,has come to the stage,must be improved handling this kind of background,puts forward the appropriate soil improvement measures to maintain the urban road greening effect become urgent need to solve practical problems.This research scholar of taiyuan tree as the main tree species,be disturbed in datong road serious typical road green space as the testbed,set up five improvement process,through two years of continuous testing and monitoring,measuring the ratios of different test period the change of soil physical properties under different processing measures,and the corresponding pagoda tree growth.The results showed that the improved treatment of garden waste(0.5kg)of compound fertilizer(1kg)was the best for improving soil physical,chemical and biological properties.The improvement of soil physical properties was obviously promoted by single garden waste,but the improvement of soil chemistry and biological characters was not obvious.Fertilization and garden waste mixing can significantly reduce soil bulk density,and the decrease of soil bulk density is positively correlated with the application of organic fertilizer.On soil mixed fertilizers applied into the comprehensive properties were obviously improved,and the effect of improved with an increase in the amount of organic fertilizer increased,but when the organic content reaches or exceeds 2.5 kg(G4),improved the promoting effect of reducing trend,and gradually flatten out,thus it can be seen,compound fertilizer(1 kg)organic fertilizer(3 kg)garden waste(0.5 kg)modified treatment namely the G5 can be used as a tipping point,soil fertilizer usage as we are looking for the best matching.At the same time,during the test,the growth of a scholar,change and the change of the pagoda tree plant enzyme activity basic consistent with the change of soil quality,suggesting that the improvement of testing soil quality can be fast obviously improve its pagoda tree planting tree growth and potential resistance.In addition,this paper analyzes the current city improved practical difficulties,and the comprehensive improvement of urban green land for the future development direction is prospected,so as to provide theoretical basis for the improvement of urban green land.