论文部分内容阅读
苹果早期落叶病是指苹果树的叶片按正常规律不到落叶的时期而提前脱落的病害,它是一类病害的总称,包括苹果褐斑病、苹果灰斑病、苹果斑点落叶病、苹果轮斑病以及苹果圆斑病,在山东省胶州市,引发早期落叶的主要是苹果褐斑病和苹果斑点落叶病。病害发生后,导致苹果树叶片早期脱落、树势衰弱,直接影响树体和果实的正常生长发育,影响有机营养的制造
Apple early deciduous disease refers to the apple tree leaves less than the normal law of deciduous period of the disease and fall off in advance, it is a general term for a class of diseases, including apple brown spot, apple gray spot, apple spot defoliation, apple round Blotch and apple piebald. In Jiaozhou, Shandong Province, the main cause of early deciduous leaves is apple brown spot and apple spot defoliation. Disease occurs, leading to the early fall of apple tree leaves, tree weakness, a direct impact on the normal growth and development of trees and fruits, affecting the manufacture of organic nutrition