The Investigation On Major Pests And Diseases Of Apple Trees In Yuncheng City And Exploration Of Biological Control Technology

There were 147,000 hectares area apples which were cultivated in Yuncheng city.Per capita fruit industry net income of Farmers were 2,100 yuan,which were Accounting for the city's per capita income of farmers 23%,Fruit industry has become a pillar industry to increase farmers income.In this experiment,the pests and diseases of 10 apple orchards in Linyi,Wanrong,Yanhu,Pinglu and Ruicheng were analyzed and analyzed,Obtained apple rot disease,stem rot disease,spotted disease and brown spot,spiraea aphid and other pests and diseases seriously which were restricted in Yuncheng apple production,which was the key to improve the quality of apple and safety production,which was an important factor in the sustainable development of apple production.Apple powdery mildew,hawthorn mite,small leaf moth,golden moth,apple aphid and other pests and diseases occured lighter,which can be effectively controlled.At least 500 meters above sea level in the well irrigation orchard control pressure was smaller,Altitude 500 meters below and the yellow irrigation area controled bigger pressure,which should do the orchard thinning,cultivation and management,enhance tree vigor,to improve the tree disease resistance.Biological agents Lv-kangwei can effectively increase the growth of new shoots and leaves thicker,which were Improved the disease resistance of the tree and the photosynthetic rate of the leaves,and Can greatly improve the disease resistance of the tree,and reduced the occurrence of fruit rot disease and apple brown spot.Therefore,For the closed orchard to be orchard thinning,cultivation and management measures to enhance the tree potential,which were to Improve the disease resistance of the tree,New orchard must choose disease-resistant varieties and early results,early high yield of fine varieties,and used T33 from the root anvil for short anvil intensive cultivation,Fruit growers to seize the critical period,did earlier and smaller.,did "prevention first,comprehensive prevention and control".Which can use green and other biological agents to improve the disease resistance of the tree to reduce the incidence of disease.