论文部分内容阅读
小麦全蚀病国内以往很少发生。近年来,山东省烟台地区蔓延很快,1973年发病面积25万亩,约减产小麦678万斤;1974年病情较轻,但发病面积仍达38
Erosion of wheat in the past seldom occurred in the past. In recent years, Yantai, Shandong Province, spread rapidly in 1973 the disease area of 250000 acres, about 6780000 tons of wheat yield reduction; 1974 mild, but the incidence still reached 38