经研究 ,稻曲病病菌以菌核在土中及厚垣孢子附在种子上越冬。翌年 7～ 8月份萌发 ,菌核抽生子座 ,产生子囊孢子。厚垣孢子 ,产生分生孢子。子囊孢子和分生孢子借气流传播 ,在 8月下旬至 9月上旬单季稻开花时萌发 ,菌丝侵入子房和柱头 ,并深入胚乳中迅速生长形成孢子座。供试药 The study, the false smut pathogens to sclerotia in the soil and chlamydospores attached to the seeds overwintering. The following year germination of 7 to August, sclerotia pumping seat, to produce ascospores. Chlamydospore, produce conidia. Ascospores and conidia propagated through the air stream. Germination occurred at the flowering of single-cropping rice from late August to early September. Mycelium invaded into the ovary and stigma and rapidly grew into the endosperm to form spores. For test medicine