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柑桔黄龙病在福建省从1955年以后逐年增长。大家已一致认为这是一种病毒病害。现在就最近两年在漳州进行的嫁接接种、蚜虫传染和遮荫防病的试验报告如下。在1961年做了病梢皮贴接接种的两个试验。试验地周围400—500米内均无柑园,但接种树和对照树仅距离7—8米。在试验期间经常防治虫害并加强栽培管理。苗木是由病区南靖苗圃选择来的一年生健壮桶柑(即焦柑)嫁接苗(砧木是红桔)。三月间定植后一般生长良好。接种方法系
Citrus Huanglongbing increased year by year in Fujian Province from 1955 onwards. Everyone has agreed that this is a virus disease. Now in the last two years in Zhangzhou grafting inoculation, aphid infection and shading disease prevention test report is as follows. In 1961, two experiments were carried out to attach the infected skin to the skin. There was no orange garden within 400-500 meters around the experimental site, but the inoculation tree and the control tree were only 7-8 meters away. During the trial often pest control and strengthen the cultivation and management. Seedlings are selected by the ward nursery Nanjing annual robust barley (that is, coke) grafted seedlings (rootstock is red orange). After planting in March generally grow well. Inoculation method