烟雾剂防治大棚蔬菜病虫害是通过农药气化后冷凝成烟雾粒或直接把农药分散成烟雾粒防治病虫害的一种新技术,它明显优于喷雾、喷粉等施药方法。但在使用烟雾剂防治大棚等保护地蔬菜病虫过程中必须注意施放时间、方法及安全。 1.施放时间要选准 在日光照射下,植株表层温度均同于烟雾颗粒温度,烟雾不易沉积,影响药效。因此施放烟雾 Aerosol pesticide greenhouse vegetable pests and diseases are pesticides vaporized after condensation into smoke particles or pesticides dispersed directly into smoke particles to prevent pests and diseases of a new technology, which is significantly better than the spray, dusting and other application methods. However, in the use of aerosols to control greenhouse pests and other protective pests in the process must pay attention to cast time, methods and safety. 1. Cast time to be selected In the sunlight, the plant surface temperature are the same as the temperature of the smoke particles, the smoke is not easy to sediment, affecting the efficacy. So cast the smoke