松苗立枯病是我县马尾松幼苗的一种严重病害,各地程度不同都有发生,有些地区危害相当严重,成片成片死亡。据调查,焦山公社宋家营大队67年育马尾松苗6亩,因受立枯病危害,有3亩全部死亡。1972年全县育马尾松苗600余亩,立枯病造成的损失达30％, Pine seedling blight is a serious disease of Pinus massoniana seedlings in our county. Different degrees have occurred in different places. In some areas, the damage is quite serious, and it becomes a piece of death. According to the investigation, 67-year-old pine tree seedlings of 67-year-old Song Jiaying brigade in Jiao Shan commune were killed and 3 mu were all killed due to the damping off of the blight. In 1972 the county Yu Masson pine seedlings more than 600 acres, blight caused by the loss of up to 30%