中文摘要：

目的：了解珠芽蓼低海拔引种的物候特性。方法：将源自高原地区的珠芽蓼根茎及其长出的珠芽引种到低海拔地区栽培,定期观察记录生长情况和收集物候数据。结果：在低海拔地区,珠芽蓼在3月初开始萌发,3月-7月下旬生长,8月初-8月下旬高温倒苗,8月下旬-10月初又开始第二茬生长,此后开始低温倒苗。4月-7月下旬是抽穗期,8月初-9月中旬是抽穗停滞期,9月中旬-10月下旬又抽第二茬穗。结论：7月下旬-8月下旬的高温天气是限制珠芽蓼低海拔栽培的瓶颈季节,但如果采用珠芽早播、肥球育苗、种植地充分遮阴等栽培措施,珠芽蓼能够正常生长和结实。

英文摘要：

Objective： To explore the phenological characteristics of Polygonum viviparum introduced from high altitude to low altitude area. Methods： To introduce the root and seed of Polygonum viviparum from high altitude to low altitude area and collect their growth and phenological data. Results： In low altitude area,Polygonum viviparum germinated at the beginning of March,grew from March to the end of July,withered during the whole August due to high temperature,recovered from the end of August to the beginning of October,and then withered again due to low temperature. Its reproduction lasted from April to the end of July,stagnated from the beginning of August to the middle of September,and recovered from the middle of September to the end of October. Conclusion： The high temperature of August in low altitude area is the bottleneck season for Polygonum viviparum,yet it can grow normally while such technologies are applied to its culture as early seeding,culture seedling with fertilizing soil ball,complete overshadow etc.