黄瓜黑星病近两年已成为吉林省黄瓜生产上的一种流行性病害.浑江市发病尤为严重,我们于1986年进行了调查和防治研究,现将结果简报如下; 一、发生与为害情况 黄瓜黑星病不仅为害成株,幼苗也可发病;它不但为害叶片、茎部和卷须,更多的是侵害果实.该病在保护地和露地黄瓜上均已普? Cucumber black star disease in the past two years has become a cucumber production in Jilin Province, an epidemic disease. Hunjiang City, the incidence is particularly serious, we conducted a survey in 1986 and prevention and control research, the results are summarized as follows: First, the occurrence and damage Case cucumber scab is not only harmful to adult plants, seedlings can also be disease; it not only damage the leaves, stems and tendrils, more is the violation of fruit. The disease in the protected areas and exposed cucumbers have been general?