薏苡(Loix lachryma)因黑粉病(Usti-lao coicis Bref.),通常减产3—5成,重的8成以上。此病由种了传带,幼苗期侵染,病株子房充满黑色冬孢子堆,即所谓“灰包”。病粒多肿绉,失去光泽,带暗紫色。氮肥多而低湿的环境下发病重。 Coix (Loix lachryma) due to the powdery mildew (Usti-lao coicis Bref.), Usually cut 3-5 percent, more than 80%. The disease by the kind of transmission, seedling infection, diseased plants ovary full of black winter spores, the so-called “gray package.” More swollen granules, tarnished, with dark purple. Nitrogen and more low-humidity environment, severe disease.