Optimal Potassium Application Rate for Panax ginseng
10.13422/j.cnki.syfjx.20220713
- VernacularTitle:人参钾肥的需求规律及肥效评价
- Author:
Jie WU
1
;
Gui-ping ZHAO
1
;
Da-de YU
2
;
Dou YIN
3
;
Xin-yue WANG
2
;
Fu-rong XU
1
;
Xi-wen LI
1
Author Information
1. College of Traditional Chinese Medicine， Yunnan University of Chinese Medicine， Kunming 650500，China
2. Institute of Chinese Materia Medica， China Academy of Chinese Medical Sciences，Beijing 100700，China
3. School of Life Science， Bengbu Medical College，Bengbu 233030，China
- Publication Type:Journal Article
- Keywords:
fertilizer demand law;
potassium sulfate;
Panax ginseng;
ginsenoside;
quality;
yield
- From:
Chinese Journal of Experimental Traditional Medical Formulae
2022;28(12):192-199
- CountryChina
- Language:Chinese
-
Abstract:
ObjectiveThe law of fertilizer requirement serves as the basis for the fertilization of medicinal plants， development of special fertilizer， and high-quality medicinal materials. MethodThis study aims to explore the optimal potassium application rate for Panax ginseng to achieve high yield and quality of the medicinal material and targeted management of potassium fertilizer. To be specific， 6 concentration gradients （0， 2， 4， 8， 10， and 12 mmol·L-1） of potassium sulfate （potassium fertilizer） were designed and applied to the 4-year-old P. ginseng in CK， C1， C2， C3， C4， and C5 treatments， respectively. Thereby， the influence of potassium concentration on P. ginseng was observed. ResultWhen potassium sulfate was applied at 8 mmol·L-1， P. ginseng had the chlorophyll content of 32.13%， net photosynthetic rate of 2.548 8 µmol·m-2·s-1， and activities of superoxide dismutase （SOD）， peroxidase （POD）， and catalase （CAT） significantly higher than those in the CK， C1， C4， and C5 treatments （P<0.05）. The average fresh weight of P. ginseng roots was 6.25 g， 134% up from the CK， and the content of ginsenoside Rg1 （5.24 mg·g-1） and Re （4.17 mg·g-1） and total saponins （12.33 mg·g-1） was significantly higher than that in CK and other treatments （P<0.05）. Thus， 8 mmol·L-1 potassium sulfate was most favorable for the growth and effective component accumulation of four-year-old P. ginseng. ConclusionThis study expounds the effect of potassium fertilizer on the yield and quality of P. ginseng， which is expected to help guide the precise application of potassium fertilizer in P. ginseng production in the field and lay a theoretical basis for the development of special fertilizer for P. ginseng and the optimization of fertilization technology.
