[Objective]It provides a theoretical basis for the scientific fertilization and timely harvesting of Angelica pubescens in western Hubeiproducing area. [Method] The accumulation of nitrogen, phosphorus, potassium and 4 coumarins was studied by regular sampling of Angelicapubescens after transplanting. [Result]The accumulation of nitrogen and phosphorus in Angelica pubescens population showed a linear upwardtrend. The potassium accumulation peaked in mid-August. The N, P2O5 and K2O required for 100 kg of Angelica pubescens dry root were1.61,1.25,2.70 kg, respectively. The content of columbianetin reached the highest in mid-June and basically stabilized after mid-September.The content of isoimperatorin peaked in mid-August and continued to decline thereafter. The content of columbianadin fluctuated greatly beforemid-August and increased slowly after mid-September. The content of osthole reached the lowest in July, increased continuously after mid-September,and reached the highest in mid-December. The accumulation of the other three coumarins increased with time and reached the highestin mid-December. [Conclusion] The ratio of N∶P2O5∶K2O supply was 1.29∶1.00∶2.17. June to October was the critical period of nitrogenand phosphorus absorption, and June to August was the critical period of potassium absorption. Harvesting in December is preferable.
关键词
重齿毛当归/需肥规律/香豆素含量/采收期
Key words
Angelica pubescens/Fertilizer requirement law/Coumarin content/Picking time
维普
万方数据