栽培黄精物候期研究

Studies on Phonological Phases of Cultivated Polygonatum

目的:田间调查栽培黄精生长发育消长规律,划分物候期,为大田规范种植提供指导。方法:采用田间系统定点追踪观测和普遍调查相结合的方法。结果:栽培黄精具有非常明显的出苗、展叶、茎叶生长、现蕾开花、结实、春发植株衰老枯死、植株再萌芽出苗同时形成越冬芽、植株地上部分完全枯死越冬等生育过程。且不同种类、不同区域存在一定差异,但总体规律一致。结论:将栽培黄精的物候期划分为出苗期、伸长期、展叶期、现蕾开花期、果实期、枯死期、秋发期(萌芽期)、越冬期等八个时期。

Objective：To determine the phonological phases of cultivated Polygonatum by investigating the dynamic pattern of its growth and development, which would provide the guides for normal planting in the field. Methods： Fix-point and real-time observation combining with comprehensive survey were used in the field. Result： Cultivated Polygonatum had obvious processes of development including emergence of seedlings, extension of leaves, growth of stems and leaves, floral initiation, flowering, seed setting, death of plant-germinating-in-spring, plant shoot regeneration and hibernating shoot emergence, and hibernation with dead aerial part of plant. There were small differences in these processes of development among species and sites, but the whole phonological pattern hold relatively constant. Conclusion： The phonological phases of Polygonatum with eight stages, including seedlings emergence stage, plant extension stage, leaves extension stage, anthesis stage, seed stage, aerial part death stage, germination-in-autumn stage, and hibernation stage, were finally determined.