摘要
还阳参是近年入侵辽宁省草坪的一种外来杂草,其生长迅速,已成为草坪重要杂草之一。还阳参种子萌发试验结果表明,种子萌发对光照要求不严格,有光无光均可萌发;萌发的最低温度为8℃,最高温度为36℃,最适温度范围为16～28℃;萌发的最佳土壤湿度为40%～50%。
Crepis tectorum L. is an invasive weed species native to Europe and temperate Asia, and now it has invaded Liaoning province. We examined the effects of several environmental factors on Crepis tectorum seeds germination, and the results showed that Crepis tectorum seeds germinated equally well under both photophase and darkness. The germination of Crepis tectorum seeds occurred at temperatures ranging from 8 ℃to 36 ℃, with optimum germination attained between 16 ℃ and 28 ℃. Crepis tectorum seeds were rather tolerant to drought, as germination rates were 40% at soil humidity of 30%, with optimum germination attained at soil humidity of between 40% and 50%.
出处
《农业科技与装备》
2012年第1期6-7,共2页
Agricultural Science & Technology and Equipment
关键词
还阳参
种子
萌发
环境因子
Crepis tectorum L.
seeds
germination
environmental factors
