梨园主要病害及防治技术目前，随着农村产业结构的调整，各地果树有了较大面积的发展．我省主要选择发展了适应性广、抗寒性较强的梨，但是，在生产实践中，梨树病害严重地影响着树体生长及果实产量和品质，从面大幅度降低了果树经济效益。现将在我省梨树上发生最为普遍、... Major Diseases and Prevention and Cure Techniques of Pear Orchard At present, with the adjustment of the industrial structure in rural areas, the fruit trees in various places have a large area of ​​development. In our province, pear with wide adaptability and cold hardiness has been mainly selected. However, in the production practice, the diseases of pear tree seriously affect the growth and fruit yield and quality of the tree and greatly reduce the economic benefits of the fruit tree . Now in our province pear tree occurs most commonly, ...