The Research On Physiological Disease Of Peach Tree Of "Indigo Burn Disease"

Chinese peach acreage and production ranking first in the world,with its colorful and beautiful fruit shape,rich nutrition,delicious flavor is favored by people in recent years.The rapid development of peach industry,also led to the rapid development of the industry,has a great contribution to the local economy.Shaanxi Province,with its superior topograpHy and soil thickness become the peach of eugenics,has reached to the scale cultivation,not only improved the local economic structure but also in improving the local landscape and ecological environment has achieved remarkable results at the same time.However,in recent years the green "hot disease symptoms" have brought serious influence to peach industry,and the incidence rate showing a gradually increasing trend,directly affects the peach yield,bring huge economic losses to farmers,and dampened the enthusiasm for production of the vast majority of farmers.Therefore,it is urgent to explore the pathogenic mechanism of peach green scald disease and put forward effective prevention and control measures.This research in the green orchard symptoms hot three yuan in Shaanxi County,Liquan County,were selected from the different disease severity and with regional health peach fruit as the research object,carries on the investigation to the daily management of the orchard,soil and plant samples were analyzed and discussed various factors that influence green hot disease in order to obtain scientific data,to the theoretical guidance for the “green hot disease ” prevention and control.The main conclusions are as follows:1.According to the investigation and analysis,the green peach "hot disease symptoms",has little correlation with its varieties,tree shape and ages.while considering the incidence of cultivation and management,combined with the previous Tongchuan city is also has the more serious symptoms,and the continuous application of organic fertilizer after the symptoms have been alleviated,and the garden which applying fertilizer is more higher rate,irrigation in good condition the incidence is relatively low.2.Based on the pHysicochemical properties of the soil root disease “Orchard Green hot”analysis,we found that the incidence of peach organic matter content was significantly lower than that of normal plants,and soil pH was higher than that of the normal strains,the diseased plant of a large number of elements on the parts(stem,branch,leaf,fruit tree)was significantly lower than that of underground parts(the root system).3.Through the analysis of the fruit growth and soil salinity in the orchard,the soil pHysical condition of the orchard was poor,such as harden and irrigation conditions,and the soil chlorine content was higher than that of the normal plant.