上海郊区早稻常发生烂秧,对夺取早稻稳产高产有一定的影响。因此,在育秧期间认真防止烂秧,是早稻生产中不可忽视的一项工作。烂秧一般分生理性烂秧和病菌引起的烂秧两种,两者又是紧密联系的,通常是由不良的外界环境和秧田管理不当,造成秧苗生长衰弱,然后病菌侵入为害,使秧苗腐烂死亡。烂秧原因 Suburban rice in Shanghai often rotten seedlings, to seize the high yield of early rice has a certain impact. Therefore, careful prevention of rotting seedlings during seedling raising is a job that can not be ignored in the production of early rice. Rotten seedlings are generally divided into physiological rotten seedlings and rotten seedlings caused by two kinds of bacteria, the two are closely linked, usually by poor external environment and improper management of seedlings, resulting in weak growth of seedlings, and then invasion of germs, the seedlings decay death. Rotten seedling causes