在水稻旱育秧中,经常出现死苗等现象。在生产实践中,总结出常见的几种死苗类型及其防治方法:1 烂根型播种后不出苗或出苗后生长不正常,胚根枯萎腐烂。主要原因是肥害造成烧苗、死苗。旱育秧由于苗床肥料浓度大,移动性小,易发生肥害死苗。一叶一心后,秧苗根系下扎触及肥团被烧伤,导致地上部生理失水死苗。追肥不当,干施 In the dry rice seedlings, often appear dead seedlings and other phenomena. In production practice, summed up several common types of dead seedlings and its prevention and treatment methods: 1 rotten roots after sowing or seedling growth is not normal, the radicle wilt decay. The main reason is fat caused by burning seedlings, dead seedlings. Dry nursery seedling fertilizer bed concentration, mobility is small, prone to fat die. After a leaf a heart, the roots of the seedlings under the bar touch fat group was burned, leading to aboveground physiological water dead seedlings. Improper dressing, dry Shi