近年来香蕉出现一种叶片变黄、叶柄背面有紫色斑点,假茎出现褐色肿块(有软腐症状、用手压有暗褐色水液渗出)。严重时整株黄化、软腐,根系变黑,前期严重影响生长,后期不能正常抽蕾或变成次蕉,减收或失收。此病在我镇发生面积占10%左右,并有逐年增加趋势。经过几年的摸索,前期用99%硫酸镁每株0.1—0.2公斤拌农家肥或化肥作基肥施 In recent years, banana appears a yellow leaves, purple petioles on the back of the back, brown stained pseudobulb appeared (soft rot symptoms, hand pressure dark brown aqueous exudate). Serious yellowing of the entire plant, soft rot, black roots, serious impact on the early growth, the latter can not normally bud or turn into sub-banana, reduced or lost. The incidence of the disease in my town accounted for about 10% of the area, and increasing trend year by year. After several years of exploration, the early use of 99% magnesium sulfate 0.1-0.2 kg per plant mix of manure or fertilizer for basal fertilizer