水稻普通矮缩病(缩草、马椿头)在我省早有零星发生,但近几年来在中部地区部份市、县为害较重。一九六五年在玉溪县调查,普通矮缩病病株率在3％左右,严重的达15％以上。一九七一年嵩明县普通矮缩病与黄萎病并发面积约二万多亩,发病严重的杨桥公社,9000多亩受灾,损失稻谷产量500多万斤。一九七二年昆明市北郊一带发生普遍而严重,在我所试验农场调查,不同田块普通矮缩病病丛率19.40—78.20％;病株率15.87—55.02％,黄萎病病丛率4.08—46.93％;病株率4.48—45.87％。附近各生产队大田为害也很严重。此外,近年在通海、晋宁、武定、富民、宜良、东州、等县均发生了不同程度的为 Rice common dwarf disease (shrub, mahogany head) in our province sporadic sporadic, but in recent years in some parts of central China city, county more serious damage. In 1965, the survey in Yuxi County showed that the prevalence of common dwarf disease was about 3% and the seriousness was over 15%. In 1991 Songming County common dwarf disease and Verticillium wilt concomitant area of ​​about twenty thousand acres, the incidence of serious Yangqiao commune, 9000 mu of disaster, loss of rice production more than 500 kilograms. In 1972, the northern suburbs of Kunming occurred widespread and serious. In our pilot farm survey, the rates of common dwarf diseases in different plots were 19.40-78.20%, the diseased plants were 15.87-55.02% and the strains of Verticillium wilt Rate 4.08-46.93%; diseased rate 4.48-45.87%. In the vicinity of the production team Daejeon damage is also very serious. In addition, in recent years, in the sea, Jinning, Wuding, Fumin, Yiliang, Dongzhou, and other counties have occurred to varying degrees