柑桔溃疡病是柑桔的危险性病害之一,是国际、国内植物检疫对象。柑桔植株受害后,叶片、果实易早落,树势衰弱,减少产量和影响果品价值。苗木和幼树受害叶片脱落,生长受阻,严重时叶片落光,枝干枯死。它对柑桔生产和果品内销外贸影响很大。柑桔溃疡病是一种细菌性病害,雨水是病原细菌的主要传染途径,植物表面或菌脓中的细菌,虽较难随气流传播,但通过雨露或水滴的飞溅却易于流行,因此,病原细菌的传播距离是比较近的。据日本资料认为,“溃疡病之为雨滴传播只是局限子树冠之内枝干之间传播的那种形式”。 Citrus canker is one of the dangerous diseases of citrus, which is the target of international and domestic phytosanitary quarantine. Citrus plant damage, leaves, fruits easy to early fall, tree weakness, reduce production and affect the value of fruit. The leaves of seedlings and saplings fall off, the growth is blocked, and the leaves fall light and the branches die. It has a great influence on citrus production and domestic sales of fruits. Citrus canker disease is a bacterial disease. Rain is the main route of infection of pathogenic bacteria. Bacteria in the plant surface or in the pus are more difficult to spread with the air currents but are more prone to splashing through rain or water droplets. Therefore, The spread of bacteria is relatively close. According to the Japanese data, “ulcer disease spread as a raindrop is just a form of propagation that spreads among the branches within the tree crown.”