一、前言水稻白叶桔病是危害水稻生产的一个重要细菌性病害,是国内植物检疫对象。1964年在我省庄河县栗子房公社发现之后,逐渐蔓延。1970年全省普查发病面积为60000亩。1971年发展到103000亩。1977年扩大达306000亩。其中以沈阳、庄河、东沟及开原等县发生严重,一般减产10～20%,重者达50%左右,成为我省水稻持续高产、稳产的一大威胁。为此,1975年春组建了“辽宁省水稻白叶枯病综合防治协作组”。六年来,本着边研究、边总结、边示范、边推广的精神,及时将各项防治措施用于生产,至1980年,全省水稻发病面积由1977年的306000亩压到66000亩,在全省范围内基本控制了危害,特别是营口、大洼、盘山等病区已彻底消灭,解除了疫区,建立起约150万亩的无白叶枯病保护区,结果如下: I. Introduction Rice white leaf orange disease is endangering rice production is an important bacterial disease, is the object of domestic phytosanitary. In 1964 Zhuanghe County in our province after the discovery of chestnut commune, gradually spread. The province census in 1970 the incidence of 60,000 acres. In 1971 to 103000 acres of development. 1977 expanded to 306000 acres. Among them, serious pollution occurred in Shenyang, Zhuanghe, Donggou and Kaiyuan counties, with a general decrease of 10-20% and a severe case of about 50%. This has become a major threat to the continued high output and stable production of paddy in our province. To this end, the Spring of 1975 set up a “Liaoning Provincial Rice bacterial blight integrated prevention and control team.” Over the past six years, in line with the study, while summarizing, demonstrating and promoting the spirit, the prevention and control measures have been used in production in a timely manner. By 1980, the province’s area of ​​rice disease was reduced from 306,000 mu in 1977 to 66,000 mu. The province basically controlled the harm, especially the Yingkou, Dawa, Panshan and other ward areas have been completely eliminated and the epidemic area has been lifted. About 1.5 million mu of no-blight reserve has been set up and the results are as follows: