近年来，辽阳地区水稻品种有了变化，辽粳454、辽粳294等种植面积达40万亩。这些品种产量高，但易感染稻曲病，一般病穗率15％～20％，严重地块病株率在50％以上。稻曲病是稻粒上的一种病害。得病的稻穗由于病粒影响，阻碍养分正常运输和邻近各粒发育，造成空秕率上升，千粒重 In recent years, Liaoyang rice varieties have changed, Liaojing 454, Liaojing 294 other planting area of ​​400000 mus. These varieties of high yield, but susceptible to false smut, the general disease panicle rate of 15% to 20%, severe block rate of diseased plants in more than 50%. False smut is a disease on rice grains. Diseased panicles due to the impact of disease, hinder the normal transport of nutrients and the development of neighboring grains, resulting in an increase in the rate of empty plow, 1000-grain weight