【摘要】 经2001～2003年的调查鉴定,甘肃环县典型草地计有白草病害11种,其中真菌病害9种,细菌病害1种,菟丝子一种。黑痣病(Phyllachoragraminis)和细菌性褐条病为主要病害。除黑痣病外,其余10种均为国内新寄主。真菌病害中,3种壳二孢(Ascochyta)、2种茎点霉(Phoma)、1种壳针孢(Septoria)经鉴定到属,因病害使产草量下降约4%.更多还原

【Abstract】 Eleven diseases of Pennisetum flaccidum were identified during Huanxian County during 2001～2003: including 9 fungal diseases,1 bacterial disease and 1 dodder disease. Tar spot (Phyllachora graminis) and bacterial brown steak were major diseases. Ten of 11 diseases were reported newly in China except for tar spot.Three diseases are caused by Ascochyta,two by Phoma and one by Septoria. Grass yield decreased about 4% caused by diseases.更多还原