水稻种子发芽率影响因素初探

摘要

为探明水稻种子发芽率在贮存期间的变化规律，以"连粳7号"水稻种子的发芽率为指标，以含水量和贮存温度为考察因素，选用3×3析因试验设计、采用 SPSS软件辅助数据分析进行了试验研究。结果表明，含水量为14.5%的水稻种子在25℃下贮存180 d后其发芽率仍可达89%，含水量为11.5%的水稻种子在5℃下贮存180 d后其发芽率仍可达96.6%，水稻种子发芽率随贮存时间的延长而逐渐下降，含水量和贮存温度为影响其变化的关键因素且二者存在显著的交互作用。%In order to investigate the change rule of rice seed germination rate dur-ing the storage, the effects of moisture content and storage temperature on Lianjing 7 rice seed germination rate were investigated. The 3×3 factorial design was adopt-ed. The test data was analyzed using SPSS. The results showed that after the Lianjing 7 rice seeds with moisture content of 14.5% were stored at 25 ℃ for 180 d, the germination rate stil reached 89%; after the rice seeds with moisture content of 11.5% were stored at 5 ℃ for 180 d, the germination rate was up to 96.6%; the rice seed germination rate was decreased gradual y with the prolonging of storage time; the moisture content and storage temperature were two key factors affecting the Lianjing 7 rice seed germination rate, and there was significant interaction be-tween moisture content and storage temperature.