求翻译：2-3叶苗期是水稻一生中对盐害最敏感的时期，苗期耐盐性的强弱直接关系到成苗率的高低，最终影响产量是什么意思？

2-3 leaf is the most sensitive life on salt injury in rice at the seedling stage, strength is directly related of the seedling salt-tolerance of seedling rate of high and low, ultimately yield