霜霉病是危害荔枝成熟果实最严重的病害,造成成熟果实腐烂变质,并大量脱落。荔枝霜霉病在雨水多,湿度大时发病严重,蔓延迅速,危害猖獗。防治技术:荔枝果实开始成熟,即果核转黑,果皮变红开始,每隔10天对树冠果实喷洒一次600倍瑞毒霉锰锌水溶液,或800倍霉特灵水 Downy mildew is the most serious disease endangering the ripe fruit of litchi, resulting in rotting and decaying of mature fruits, with a lot of shedding. Litchi downy mildew in the rain, humidity, severe onset, spread rapidly, the dangers rampant. Prevention and treatment techniques: litchi fruit began to mature, that is, the nuclear turn black, the reddish peel began, every 10 days on the crown of fruit spray spray a 600 times Rifamycin Mn-Zn solution, or 800 times mold water