小麦丛矮病是一种毁灭性病害,危害的重点主要是棉茬小麦,其次是靠近沟渠、路旁和荒地的小麦,再就是早播麦田。据商河县1984～1985年在小麦抽穗期调查,棉茬小麦发病株率比玉米茬、豆类茬高35.5%,尤以棉套小麦发生最重,发病株率高达58%。小麦植株冬前感病,显著矮缩,分蘖增多,主茎 The bushy dwarf disease of wheat is a devastating disease, with the main points of harm being wheat under cotton stubble, followed by wheat near ditches, roadsides and wasteland, followed by early-sowing wheat fields. According to the survey of wheat heading date from 1984 to 1985 in Shanghe County, the incidence rate of wheat in cotton stubble was 35.5% higher than that of corn stubble and beans stubble, especially in the cotton cover wheat. The incidence rate of wheat was as high as 58%. Pre-winter wheat plant disease, significantly dwarf, tillering increased, the main stem