蔬菜种子的新陈对于蔬菜生长的好坏,有着密切的关系。有的蔬菜必须用新籽,有的则以陈籽为好。现介绍一些常用蔬菜种子的有效期限。白菜籽可以保存两年。当年收获的种子,可当年播种。但贮存两年以上的种子,播种后出苗率一般要降低20%～30%以上,相应的抗病力也差。其贮存时间越长,抗病力越差。贮存白菜籽,应放在凉爽、通风、干燥处。不要把种子装在塑料袋、水缸、铁桶等不透气的容器里,以免捂坏,影响发芽率。芹菜籽可以保存5年。但当年产的籽不能作种用,必须存1年以后的陈籽才能作种。新籽芹菜昧很浓,陈籽味道较淡。韭菜籽种韭菜必须用当年的新籽,隔年的陈籽不易出 The freshness of vegetable seeds for the growth of vegetables is good or bad, has a close relationship. Some vegetables must use new seeds, while others are better than Chen seeds. Now introduce some commonly used vegetable seeds of the validity period. Cabbage can be preserved for two years. The seeds harvested that year can be sown the same year. However, when the seeds are stored for more than two years, the germination rate after sowing is generally reduced by 20% to 30%, and the corresponding disease resistance is also poor. The longer storage time, the worse the disease resistance. Storage of rapeseed, should be placed in a cool, ventilated, dry place. Do not put the seeds in plastic bags, water tanks, metal drums and other impermeable containers, so as not to cover up bad, affecting the germination rate. Celery seeds can be preserved for 5 years. However, when the seeds can not be used for planting, the seeds must be stored for one year before they can be used as seeds. New seed celery ignorant very thick, Chen seed taste lighter. Leek seed leek must use the new year seed, Chen seed next year is not easy to go out