云南重楼种子育苗技术研究

Study on seedling techniques of Paris polyphylla var. yunnanensis

目的：缩短云南重楼种子萌发和出苗所需时间，提高其出苗率；提出在生产中切实可行的云南重楼种子有性繁殖育苗方法。方法：考察不同温度、不同播种方式（播种时间、覆土厚度、地膜覆盖）等因素对云南重楼种子萌发和出苗的影响。结果：云南重楼种子胚后熟和萌发的最适温度在18～20℃，在此温度下处理3～4个月以后，转至0～10℃低温处理2～4个月，可在翌年4月出苗；适宜的播种时间是4月份以前，育苗土覆盖厚度为1cm左右，播种后用黑色地膜进行覆盖，可提高出苗率。结论：上述试验结果可为云南重楼种子育苗提供操作参考。

Objective： To shorten the duration of seed germinating, improve seed emergence and eventurally to establish a practical method for seeding of Paris polyphylla var. yunnanensis seed. Method： To study the effect of some factors （ temperature, sowing time, covering-soil depth, plastic film ） on seed emergence of P. polyphylla var. yunnanensis. Result： The most suitable temperature for embryonic post-maturity and seed germinating is 18-20 ℃. Paris seed could emerge in April when it was transfer to a low temperature 0-10 ℃ for 2-4 months after being treated under 18-20 ℃ for 3-4 months. For seed emergence, the best sowing time was before April. The suitable soil depth was about 1 cm. It is a better way to cover the seedling bed with black plastic film for improving the emergence percentage. Conclusion： Above results provide seedling techniques of P. polyphylla var. yunnanensis.