防治苹果树腐烂病新药─—灭腐一号苹果树腐烂病是一种危害果树的严重病害，农民称它为“果树癌症”。近年来，华北地区主产苹果栽培区，有的由于管理粗放，结果过多，病虫害猖撅，造成树势衰弱，伤口过多，导致腐烂病扩展蔓延，损失惨重。据河北省１９９３年２５个县、市... Prevention and treatment of apple tree rot disease new drug ─ ─ corrupt apple tree rot disease is a serious disease of fruit trees, farmers call it “fruit tree cancer.” In recent years, apple-growing areas are the main producing areas in North China. Some of them are extensively managed and the results are excessive. Pests and diseases are rampant. As a result, tree shrank and excessive wounds cause the spread and spread of the rot disease. According to Hebei Province in 1993 25 counties, cities ...