자연상태(自然狀態)에서 발현(發現)된 병반(病斑)을 이용(利用), 도열병균(稻熱病菌)의 포자형성량(胞子形成量)과 이탈량(離脫量)을 $1985{sim}1986$년(年)에 조사(調査)하였다. 절취(切取)한 병반(病斑)의 포자형성량(胞子形成量)과 자연상태하(自然狀態下)에서의 포자이탈량(胞子離脫量)은 병반발현후(病斑發現後) $5{sim}7$일(日) 사이에 최고치(最高値)에 달(達)했으며 그 수(數)는 각각(各各) 16,200개(個)와 15,900개(個)였다. 자연상태하(自然狀態下)에서의 포자이탈(胞子離脫)은 30일간(日間) 지속(持續)되었다.
Sporulation potential and conidia release phase of Pyricularia oryzae on lesions under the natural conditions were measured in 1985 and 1986 leaf blast seasons. The amount of conidia produced in lesions on detached leaves and conidia released under the field condition were reached peak at $5{sim}7$ days after lesion appearance. The maximum numbers of conidia produced and released were 16,200 and 15,900, respectively. Conidia release under the natural conditions lasted for 30 days.
