早春蔬菜育苗中侵染性病害的防治早春蔬菜育苗，特别是冷床育苗易形成温度低、湿度大和光照不足这样一个不利于幼苗生长发育的棚室气候条件，容易引起幼苗猝倒病，立枯病、炭疽病、根腐病等侵染性病害的发生。这些病害在苗期主要危害未出土或出土幼苗的基部，造成幼苗倒伏... Early spring vegetable seedling infestation disease prevention and control Early spring vegetable nursery, especially cold bed nursery easy to form a low temperature, humidity and lack of light is not conducive to the growth and development of greenhouse seedlings weather conditions can easily lead to seedling damping off disease, standing dead Diseases, anthrax, root rot and other infectious diseases. These diseases at the seedling stage are mainly harmed unearthed or unearthed seedling base, resulting in seedling lodging ...