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几年来,昭乌达盟地区,玉米大斑病普遍发生,为害严重,发病地块的玉米产量一般损失5～30％。彻底消灭玉米大斑病,是确保玉米增产的重要一环。1969—1970年,在调查玉米大斑病时发现,施肥多的地块发病较轻,在缺肥缺氮的条件下发病重。为了明确肥料对大斑病发生的影响,1971年在所内进行了试验。玉米品种为反交维尔156。试验区行长40米,宽3米,株行距为50×50厘米方形点播。
In recent years, Zhaowuda League area, maize leaf spot widespread, serious damage, the incidence of maize yield general loss of 5 to 30%. The complete elimination of maize leaf spot is an important part of ensuring corn yield. From 1969 to 1970, during the investigation of the maize leaf spot, it was found that the plots with more fertilization were less likely to develop disease and the disease was more severe under the condition of lack of fertilizer and nitrogen. In order to clarify the impact of fertilizer on the occurrence of maculopathy, in 1971 carried out within the trial. Maize Varieties for VW 156. Test area governor 40 meters wide and 3 meters, spacing of 50 × 50 cm square on-demand.