软盘旱育抛秧是早稻增产的一项新技术。但有的农户在育秧过程中有时会出现黄苗甚至死苗现象。据笔者近几年的观察,造成这种现象的主要原因有:1.苗床选择不当有的农户为了移栽方便,在每丘大田的田边一角建一块秧床作为旱育秧苗床地,往往前期是旱播育秧地,而中后期耙田时秧床被水 Floppy discoloration throwing rice cultivation is a new technology for early rice yield. However, some farmers sometimes appear yellow seedling or dead seedling in the process of raising seedlings. According to the author’s observations in recent years, the main reasons for this phenomenon are: 1. Improper selection of seedbed Some farmers in order to facilitate transplanting, in the corner of each hill field Tianjian built a seedbed as dry nursery seedbed bed, often in the early Is the dry sowing seedlings, while in the late rake field seedbed water