该病是一种土传病害，主要危害甜橙类柑桔树近地表根颈部，引起腐烂，导致树势下降。
It mainly damages basal stock of sweet orange trees, inducing foot rot, tree declining, yield decreasing, even tree death.
橙类是最重要的柑桔类水果。甜橙栽培是佛罗里达和加利福尼亚两州的主要水果种植业。
The orange is much the most important of all the citrus fruits and its culture provides major fruit-growing industries in both Florida and California.
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