近年来,随着栽培制度的改革,水稻旱种面积逐年扩大,水稻旱种穗颈稻瘟病的发生亦趋严重。据调查,1984年,临沂地区旱种水稻穗颈瘟发病率为75.3～98.3％,严重度为35％;水种穗颈瘟发病率为38.4～65.2％,严重度为21.4％。为了有效地控制旱种水稻穗颈瘟的为害,我们于1987～1990年对其发病规律及药剂防治进行了研究,筛选出一批抗病品种,找出了有效的防治方法。 In recent years, with the reform of the cultivation system, the area of ​​dry cultivation of rice has been expanded year by year, and the occurrence of rice blast diseases has also become more serious. According to the survey, in 1984, the incidence of panicle blast in paddy rice in Linyi was 75.3-98.3% with a severity of 35%. The incidence of panicle blast in water was 38.4-65.2% with a severity of 21.4%. In order to effectively control the damage of rice panicle blast, we conducted a study on its incidence and drug control from 1987 to 1990, screened a number of resistant varieties and found out effective control methods.