种子在贮藏过程中,因受温度、湿度、微生物等因素的影响,质量将发生不同程度的变化。翌年是否能够再作种用?以往的依据主要是在室内测定发芽率。实践证明,仅靠这一指标来衡量种子质量好坏,是不全面的,也是不可靠的。因为室内发芽率与田间成苗率差异很大。比如,1984年我县从外地调进的部分隔年陈杂交水稻种,发芽率是75%左右,而田间成苗率却只有30%左右。国内外的研究说明,用种子活力比用种子发芽率更能表明种子质 Seeds in the storage process, due to temperature, humidity, microorganisms and other factors, the quality will vary in varying degrees. Is it possible to re-use the following year? In the past based on the determination of indoor germination rate. Practice has proved that the indicator alone to measure the quality of seeds is not comprehensive, but also not reliable. Because of indoor germination rate and field seedling rate vary greatly. For example, in 1984 I County from the field part of the hybrid rice hybrid rice, the germination rate is about 75%, while the field is only about 30% seedling rate. Research at home and abroad shows that seed vigor is more indicative of seed quality than seed germination rate