种植脐橙,防治好溃疡病是关键。经多年生产实践,我们总结出防治溃疡病的六大要点,现介绍如下:1　从早防治　冬季清园时彻底清除带病枝叶和残果,并集中深埋或烧毁,春芽萌发前后、幼果初始,抓紧喷药保护,降低病菌基数。2　用准农药　春芽萌动前后,喷0.8度石硫合剂一次;春梢长1.5 Planting navel orange, prevention and cure of ulcer disease is the key. After many years of production practice, we summed up the prevention and control of ulcer disease six major points are as follows: 1 from the early prevention and control of the winter clearing garden completely remove diseased branches and leaves, and concentrated in deep burned or burned, before and after spring bud germination, young If the initial fruit, pay close attention to spray protection, reduce bacteria base. 2 quasi-pesticide spring buds before and after sprouting, spraying 0.8 degrees lime sulfur mixture once; spring shoots long 1.5