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自1960年以来,小麦黄矮病在我区曾5次大流行,给生产造成了严重损失。从1973年起我们先对本病的传毒介体——麦蚜进行了调查研究。为了进一步了解该病的分布规律,为开展综合防治提供依据,1983—84年又在全区进行了普查。一、调查方法采取网点普查方法。全地区共分9条南北走向的普查线,线距约15里;每条线设点不等,点距约10里,共设点93个。分别在春季小麦返青后(4月初)、
Since 1960, wheat yellow dwarf disease has caused 5 major epidemics in our district, causing serious losses to production. Since 1973, we first conducted a survey on the disease-causing virus-mediated aphids. In order to further understand the distribution of the disease, to provide a basis for comprehensive prevention and control, again in 1983-84 in the region conducted a census. First, the survey method to take stock screening method. The whole region is divided into nine general-purpose census lines going north and south, with a line distance of about 15; each line has a set point, a point distance of about 10 and a total of 93 points. After returning to green in spring wheat (early April)