我省是全国大豆主要产区之一,播种面积居全国第四位,但产量却为第九位。产量低的原因之一,就是由于大豆病毒的为害。根据近几年调查,我省大豆病毒病的发病率一般都在20％左右,重病年可达50％以上,亩产仅百斤左右,而且种子传毒率较高(5％左右),种传接种体再健率(当年种传率与上年种传率之比),有逐年增高的趋势。因此,选育抗病丰产的大豆品种是提高大豆产量当务之急。在选育抗病品种时,有必要了解本地区大豆病毒病的种类,特别是优势种,才能更好地选育具有水平抗性或垂直抗性的优良品种。通过几年调查,我们发现我省危害大豆最重的是花叶和皱缩症状类型,使植株矮化,分枝、结荚少,青秕率高,对产量影响极大。因此,我们认为这种病毒就是我省大豆病毒病的主要优势种。自1980年以来,我们重点进行了安徽种传大豆病毒优势种类的鉴定和抗病性试验工作,现将几年研究的初步结果报道如下: Our province is one of the main producing areas of soybean in the country, with the sown area ranking the fourth in the country, but the output is the ninth. One of the reasons for the low yield is due to the damage of soybean virus. According to the investigation in recent years, the incidence of soybean virus disease in our province is generally about 20%, critically ill up to 50% or more per mu only about 100 pounds, and the higher the rate of seed poisoning (about 5%), species Pass vaccination and then health rate (when the year of transmission rate and year-old rate of transmission ratio), there is a trend of increasing year by year. Therefore, the selection of high-yielding soybean varieties is to increase soybean production of top priority. When breeding disease-resistant varieties, it is necessary to understand the types of soybean virus diseases in the region, especially the dominant species in order to better breed fine varieties with horizontal resistance or vertical resistance. After several years of investigation, we found that the most harmful species of soybean in our province are mosaic types of folds and folds, which make dwarfing plants, less branches, less pods and high rate of barley and have a great impact on the yield. Therefore, we think this virus is the main dominant species of soybean virus disease in our province. Since 1980, we have focused on identification and disease resistance testing of the dominant species of the somatic soybean germplasm in Anhui. The preliminary results of several years of research are reported as follows: