蔬菜病害的病菌，多寄生在上年病株的枯枝、落叶、残果上。而这些带菌残体又大量散落在苗床或大田土壤中，成为下年的初浸染病讯实践证明，给蔬菜苗床及某地消毒灭菌，是防治蔬菜真菌、细菌、病毒病及线虫等土传病虫害的重要措施。常用的灭菌方法有化学灭菌法和物理灭菌法两种 Diseases of vegetable diseases, more parasitic in the dead branches last year, deciduous, residual fruit. And these bacteria residues and a large number of scattered scattered in the seedbed or field soil, as the next year’s initial dip disease practice has proved that the vegetable seedbed and a place to sterilize and disinfect, is to prevent and control vegetable fungi, bacteria, viruses and nematodes and other soil Important pest and disease measures. Commonly used sterilization methods are chemical sterilization and physical sterilization two