论文部分内容阅读
对我省松枯梢病的初步研究结果表明：松枯梢病是松色二孢菌侵染所致，其症状与有关报道基本相似，在我省分布24个县（市、区），为害21种松树．分生孢子一年有3个释放高峰，主要发病时间为4月初至11月中旬，有2～3个发病高峰期，病菌分生孢子产生释放、病害发生发展与温湿度、降雨量密切相关．种子不带菌，但从幼苗直至大树均可受病菌侵染．
The results of the preliminary study on the pine blight in our province showed that the pine blight was caused by the infection of the pine conidia and its symptoms were basically similar to those reported. There were 24 counties (cities and districts) 21 kinds of pine trees. Conidia released three peaks a year, the main onset time from early April to mid-November, there are 2 to 3 peak incidence of pathogenic bacteria conidial release, disease development and temperature, humidity, rainfall are closely related. Seeds without bacteria, but from the seedlings until the tree can be infected by bacteria.