西洋参氮素营养特性的研究

Nitrogen Nutrition of Panax quinquefolium Linne

通过15N示踪微区试验 ,研究了西洋参氮素营养特性。结果表明 :15N -尿素在西洋参各器官均有分布 ,参株从肥料中吸收氮素 (NDFF % )含量地上部各器官高于地下部。施氮肥与未施氮肥处理的收获参根干重为 2 8 89%和 2 1 82 % ;施氮肥增加了参根蛋白氮和非蛋白氮的含量 ,并约有 80 % 15N分配到参根蛋白氮中。

Nitrogen nutrition of Panax quinquefolium Linne was studied by using 15 N tracer technique The results showed that 15 N ( 15 N urea) was distributed to all organs of Panax quinquefolium Linne NDFF% in above ground part was higher than that in below ground part Root dry weight was 28 89% and 21 82% respectively for treatments with or without nitrogen application The application of nitrogen fertilizer increased the content of nitrogen in both protein and non protein forms and about 80% of the nitrogen was found in root protein