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一、水稻矮缩病的发生、发展情况目前我国发生的五种水稻矮缩病,即普通矮缩病、黄矮病、黄萎病、黑条矮缩病和条纹叶枯病,在浙江省均有发生。1963年黑条矮缩病先在余姚等县水稻上大面积发生,1965—1966年在我省中部丘陵和北部平原地区的水稻、玉米上暴发成灾,部分地区水稻还并发条纹叶枯病和普通矮缩病。1967年以后,黑条矮缩病迅速减少,而普通矮缩病、黄矮病和黄萎病发病程度逐年加重,发病面积不断扩大,1967年黄萎病在东南沿海的温(岭)黄(岩)平原晚稻上
First, the occurrence and development of rice dwarf disease Five rice dwarf diseases occur in our country, namely common dwarf disease, yellow dwarf disease, Verticillium wilt, black stripe dwarf disease and stripe virus in Zhejiang Province Have happened. In 1963, the black stripe dwarf disease first occurred on a large area of rice in Yuyao counties. In 1965-1966, outbreaks of rice and maize occurred in the hilly areas in the central part of our province and in the northern plains. In some areas, Common dwarf disease. After 1967, the black stripe dwarf disease rapidly decreased, while the incidence of common dwarf disease, yellow dwarf and verticillium wilt increased year by year, the area of disease continued to expand. In 1967, Verticillium wilt Rock) Plain late rice