早稻育秧期间气温波动大,寒潮活动频繁,这种多变的天气不利于旱育秧的出苗和生长。早稻旱育苗床的田间环境,与水育方式相比有了新的变化,容易发生多种不同于水育秧的苗床病害。因此,一定要加强早稻 During the early rice growing season, the temperature fluctuates greatly and the cold tide activities are frequent. The changing weather is not conducive to the emergence and growth of dry seedlings. The field environment of early rice dry seedbed has changed a lot compared with that of aquaculture, and it is easy for a variety of seedbed diseases different from watering seedlings to occur. Therefore, we must strengthen early rice