营口地区是苹果集中产区，栽植面积约50万亩，植株有2000万株，其中结果树约600万株，年产量约22万吨。1990年苹果锈病的发生和蔓延速度惊人，全市发生150万株，减产近920万公斤，为控制苹果锈病的蔓延，市植保站进行了初步的调查和探讨。一、病原和病状苹果锈病是担子菌纲胶锈 Yingkou area is an apple-producing area, planting an area of ​​about 500000 acres, 20 million plants, of which about 6 million trees, the annual output of about 220,000 tons. In 1990, the occurrence and spread rate of apple rust was staggering. There were 1.5 million plants in the whole city and the output was reduced nearly 9.2 million kilograms. In order to control the spread of apple rust, the plant protection station carried out preliminary investigation and discussion. First, the pathogen and disease Apple rust is basidiomycete rubber