杂交水稻陈种比新种发芽率低 ,发芽势（即发芽整齐度 ,发芽速度）和单株分蘖性稍弱 ,其它性状如株高 ,全生育期 ,产量等相差不很大。使用陈种时 ,只要采取以下相应的补救措施 ,同样可以获得高产 :一、晒种浸种前将杂稻种子放在簸箕上日晒２小时左右 ,每隔半小时翻动一次 ,使其 The hybrid rice showed lower germination rate than the new ones. The germination potential (ie, uniformity of germination, germination rate) and tillering per plant were weaker. Other traits such as plant height, whole growth period and yield did not differ significantly. The use of Chen species, as long as the following appropriate remedial measures, the same can be obtained high yield: First, seed soaking seed soaking hybrid rice seeds on the dustpan on the sun for about 2 hours, every half hour flip once