冬春棚蔬菜换茬,时间紧,菜农往往对一些事项重视不够,致使蔬菜定植后生长不良。冬春季蔬菜换茬必须做好以下几点。1.棚内消毒要彻底蔬菜拔园后,菜农为赶茬口,使下茬蔬菜早日上市,大都在拔园后仓促定植,而忽视了大棚的消毒工作,为下茬蔬菜病害暴发埋下了隐患。蔬菜换茬时,一定要把棚内的枯枝残叶清理干净,并做好消毒工作。可在蔬菜罢园后,每667平方米用硫磺粉1000克加锯末混合,拌匀后分放在棚内各点, Winter shed vegetables stubble, the time is tight, farmers often pay insufficient attention to some issues, resulting in poor growth after planting vegetables. Spring and winter vegetables for stubble must do the following points. 1. shed disinfection should be thoroughly after the vegetable garden, the farmer for the stubble, the next crop of vegetables listed as soon as possible, most of the hurried planting after the park, while neglect the disinfection of sheds, vegetable diseases outbreaks laid the underlying risk . Vegetable stubble, it must be shed dead leaves clean up clean, and good disinfection. Can be parked in the vegetable, every 667 square meters with 1000 grams of sulfur powder and sawdust mixture, mix well after the points in the shed,