1.黑斑病4月中旬开始发病,雨季发病严重。叶片受害后开始在叶尖发黄变褐,逐渐蔓延至全株;有的叶片出现青色、白色水渍状斑点,严重时麦冬成片枯死。防治方法 (1)选用健壮无病植株作种株;(2)栽种前,将种苗用1∶1∶100波尔多液浸渍5分钟;(3)雨季及时排除积水,降低田间湿度;(4)发病初期,在清晨露水未干时每亩撒草木灰 1. Black spot disease started in mid-April, severe onset of the rainy season. The leaves began to yellow brown at the tip of the brown, gradually spread to the whole plant; some leaves appear cyan, white water stain-like spots, severe Ophiopogon into pieces die. Prevention and treatment methods (1) Selection of robust plant-free plants as seed plants; (2) before planting, the seedlings were immersed in 1: 1: 100 Bordeaux mixture for 5 minutes; (3) rainy season to exclude stagnant water and reduce field humidity; Early onset, in the morning when the dew did not dry acres of grass sod