油葵是北疆地区的主要油料作物,霜霉病是油葵的一种主要病害。近年来由于种子检疫不严,致使这种病害蔓延扩展,影响品质和产量。 今年北疆地区油葵霜霉病是推广种植油葵以来大发生的一年,据调查,有近70％的面积程度不同的发生霜霉病,毁种改播面积约12%左右。据已掌握的实产估算,因霜霉病危害,造成今年油葵减产1—3成左右。 Oil sunflower is a major oilseed crop in northern Xinjiang, and downy mildew is a major disease of oil sunflower. In recent years, due to the lack of seed quarantine, resulting in the spread of this disease expansion, affecting the quality and yield. This year, the sunflower downy mildew in northern Xinjiang is one of the major occurrences since the introduction of oil sunflower cultivation. According to the survey, about 70% of the area is downy mildew, varying by about 12%. It has been mastered the real production estimates, due to downy mildew hazards, resulting in reduced output of about 11% of this year’s oil sunflower.