芡实叶瘤病病原为担子菌亚门实球黑粉菌属真菌,发病初期叶面出现褪绿黄斑,后隆起膨大呈瘤状,不规则,黄色,上有红色条纹或斑块,直径5~40厘米,高3~10厘米,后期开裂或腐烂,叶片下沉。以前生产上一般在发病后喷施多菌灵防治,效果较差,很难控制病情。据2009年试验,分别在植株发病初期和发病后使用苯醚甲环唑喷雾防治该病,结合喷施叶面肥,结果显示,以发病初期喷药效果较好,施药前未发病植株不再继续发病,病情得到控制,防效在85%以上。对芡实叶瘤病、叶斑病等病害,应以预防为主,在定植活棵后及时施药。可以选用70%甲基硫菌灵可湿性粉剂1000倍 Sapodilla solid leaf tumor pathogen is Basidiomycotina solid black fungus fungi, the onset of the early appearance of faded green macular, after the bulge was swollen tumor, irregular, yellow, red stripes or plaques, diameter 5 ~ 40 cm, 3 to 10 cm high, later cracking or decay, leaf sinking. In the past, the general production after the onset of spraying carbendazim prevention and treatment, the effect is poor, it is difficult to control the disease. According to the test in 2009, difenoconazole spray was used to prevent and cure the disease in the early and after the onset of the plant, and the foliar spray was applied in combination with the foliar fertilizer. The results showed that the spraying effect was good at the initial stage of the disease, Then continue the disease, the condition is under control, prevention effect is above 85%. For 芡 real leaf tumor disease, leaf spot disease and other diseases should be based on prevention, planting live trees in a timely manner after spraying. You can use 70% thiophanate-methyl WP 1000 times