苹果烂根病,前几年在俺大队发展很快,严重地影响了苹果树的生长和结果。刚结果的果树每年死亡几十株,这种病害的迅速发展,引起了我们的高度重视。遵照毛主席 “人们为着要在自然界里得到自由,就要用自然科学来了解自然,克服自然和改造自然”的教导,立即成立了七人的专门防治小 Apple rotten root disease, a few years ago I brigade developed rapidly, seriously affecting the apple tree growth and results. The result of the annual death of dozens of fruit trees each year, the rapid development of this disease has aroused our great attention. Following Chairman Mao’s teachings that “people should learn about nature from nature, overcoming nature and transforming nature in order to be free in nature,” they immediately set up a special group of seven people in charge of prevention and control