烟草黑胫病俗称烂腰、黑根，是烟草生产上的毁灭性病害。某些主产区每年因黑胫病损失烤烟２５万～３万ｔ，成为多种病害损失之首。１发生特点烟草黑胫病菌以卵孢子、厚垣孢子和菌丝体随病株残体在土壤中越冬，并能存活３ａ左右。该病的最初侵染主要来自病土和带菌肥料，... Tobacco black shank disease, commonly known as rotten loin, black root, is a devastating disease on tobacco production. In some major producing areas, the annual loss of flue-cured tobacco by black shank is 25,000 to 30,000 tons, becoming the first of many diseases to be lost. 1 Occurrence characteristics Tobacco shanxii bacteria to oospores, chlamydospores and mycelium with the diseased plants in the soil overwintering, and can survive about 3a. The initial infection of the disease mainly from soil and fungi fertilizers, ...