1980年,我们由辽宁省引种了日本落叶松和樟子松,由于立枯病的为害,先育的苗几乎全部死亡。后来我们改用底垫生土,上盖锅炒土(温度高达260℃)的办法,重新育苗,这一年再没有发现立枯病。但此法在小面积上用还可以,大面积应用就不好办了.当地群众烧大肥的办法启发了我们,于是由1981年起我们就用此法进行土壤消毒,二年来没有发现过立枯病。烧土的温 In 1980, we introduced Japanese larch and Pinus sylvestris from Liaoning Province. Almost all the first-born seedlings died because of the blight. Later, we switched to the bottom soil, cover the pot fried soil (temperature up to 260 ℃) approach to re-breeding, and no damping off was found that year. However, this method can be used in a small area, large-scale application is not easy to handle. The local people burn big fat inspired us, so from 1981 onwards we use this method of soil disinfection, two years have not been found Blight. Burned soil temperature