银杏是果、树、叶兼用的经济树种。但在栽培中病害也日渐突出,现将其主要病害的发病规律及防治方法介绍如下:银杏叶枯病。该病属真菌性病害。叶枯病多在7～8月份发生,5～6月份也有出现。多见于3～4年生的幼树,在1年生小苗和较大的树上也有发现,无论大树和小树,其发病部位都在 Ginkgo biloba fruit, tree, leaf and economic tree species. However, the disease is also increasingly prominent in cultivation, now the incidence of its main disease and prevention methods are described below: Ginkgo leaf blight. The disease is a fungal disease. More leaf blight occurred in July-August, and also occurred in May-June. More common in saplings of 3 to 4 years old, also found in 1-year-old seedlings and larger trees, both trees and small trees, the incidence of the site are