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玉米园斑病在我国吉林、河北等省有发生,我省以前未见报导,1977年在洛川县制种地内发现,发病范围有后子头、旧县、土基、槐柏等10个公社21个生产队面积249亩。发病的自交系和组合有吉63、武105、武206、延755、延743、莫17、西单3号、单675,陕单1号,陕玉661等。1978年此病又在延安市、黄陵县和姚家坡农场发现,发病面积共达500余亩。在洛川县后子头公社调查,北片良种场78年有20亩好单1号制种田,发病率达81%;高硷大队有30亩西单13号制种田,发病率达
Maize plague in our country Jilin, Hebei and other provinces have occurred, our province has never been reported before, found in Luochuan County in 1977, the incidence range of Houzitou, old county, subgrade, Huai Bai 10 Commune 21 production team area of 249 acres. Inbred lines and combinations of disease Ji 63, Wu 105, Wu 206, extension 755, extension 743, Mo 17, Xidan 3, single 675, Shan Dan 1, Shaanxi 666 and so on. In 1978, the disease was found in Yan’an City, Huangling County and Yaojiapo Farm, with a total area of over 500 mu. In Luochuan County Sub-head Commune survey, the North piece of good seedling field in 78 years with 20 acres of good single 1 system of farming, the incidence rate of 81%; high base brigade has 30 acres of Xidan No. 13 farming system, the incidence of up to