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柑桔裂皮病(Citrus exocortis Viroid)是柑桔生产上一种毁灭性病害。40年代末期国外首次报道。70年代我国发现症状,经鉴定是一种类病毒CEV引起。人们从病原鉴定、诊断枝术研究较深入,田间为害损失报道较少。本文以内江县为基点,重点调查田间症状、分布、发病率、对树势影响和产量损失及品质测定。结果是:树冠矮化、砧木裂皮、叶片黄化斑驳、落叶重、着果低。8～12年生桔树田间发病率6.75％,有点发型和集团型分布;单株平均减产26.08kg/株,减产75.76％,甚至无收。全县因裂皮病一年减少产值56.33万元,严重时近百万元。提出了控制防除措施。
Citrus exocortis Viroid is a devastating disease in citrus production. First reported in foreign countries in the late 1940s. Symptoms found in our country in the 1970s, identified as a virus-like CEV caused. People from the pathogen identification, diagnosis of branches more in-depth, less damage to the field reported. In this paper, Neijiang County as the base, focusing on field investigation of symptoms, distribution, incidence, the impact on the tree and yield loss and quality determination. The result is: dwarf crown, rootstock split, leaves yellow mottled, deciduous, with low fruit. The incidence of 8 ~ 12 years old citrus trees was 6.75%, a little hairstyle and group distribution; the average yield of single plant was 26.08kg / plant, yield was reduced by 75.76% or even no crop was collected. The county due to split-skin disease a year to reduce the output value of 563,300 yuan, nearly a million in serious cases. Proposed control and prevention measures.