我省早稻的烂秧现象,从发生的时期来看,一般可分两种:一是从播种到扎根前后的烂种和烂芽;二是在秧苗三叶期前后的秧苗死亡。第一种情况是最常见的,也就是通常所称的烂秧。自全省推广半旱秧田为中心的育秧技术以来,已基本上得到解决。第二种情况的发生,虽不及前者的普遍,但大多在秧苗已扎根转青、生长良好时,突然出现,所以一旦发生,往往容易措手不及,加以在防治措施上尚缺乏经验,故容易造成严重为害。为了区别于前一种烂秧现象,故称为死苗。在最近几年中我省各地早稻都有不同程度 The phenomenon of rotten seedling of early rice in our province can generally be divided into two types from the time of occurrence: one is rotten and rotten buds before and after sowing; the other is the death of seedlings before and after the three-leaf stage of seedlings. The first case is the most common, which is commonly referred to as rotten seedlings. Since the promotion of semi-dry seedling cultivation in the province as the center has been basically solved. The second situation, though less common than the former one, is that most of the seedlings have taken root and turned green and emerge suddenly when they grow well. Therefore, if they happen, they are often caught off guard and are lack of experience in prevention and control measures, so they are likely to cause serious problems Harmful. In order to distinguish the former phenomenon of a rotten seedling, it is called dead seedlings. In recent years, our province has different levels of early rice