ABSTRACT
Objective::To explore the correlation between bulb quality and rhizosphere soil factors of Fritillaria taibaiensis of different origins and years, in order to provide theoretical basis for the high quality and safe production of F. taibaiensis. Method::Totally 11 samples of bulb and rhizospheric soil of F. taipaiensis of different origins and years were taken as the research objects. Available N, available P, available K, organic matter, pH and six soil enzyme activities in rhizosphere soils were determined by soil agrochemical analysis method. Peimisine and nine nucleosides in F. taibaiensis bulbs were determined by HPLC, and total alkaloid content was determined by UV. SPSS 22.0 software was used to analyze the correlation of the measured data. Result::There were significant differences in rhizosphere soil factors and bulb quality between F. taibaiensis of different origins and years (P<0.05). In terms of soil factors, the contents of available N, available K, organic matter and six soil enzyme activities in rhizosphere soil of wild varieties were higher than those of cultivated varieties, while the contents of available P and pH were lower than those of cultivated varieties. With the increase of growth years, the soil nutrient index of cultivated varieties showed different change trends, while that of wild varieties did not change significantly. However, most of the soil enzymes in both groups decreased in varying degrees. In terms of bulb quality, the contents of nine nucleosides and alkaloids in F. taibaiensis bulbs decreased with the increase of growth years, with larger change trends of cultivated varieties, while that of wild varieties was not significant. The contents of nucleosides and alkaloids in most cultivated varieties were higher than those in wild varieties. The correlation analysis showed certain correlations between soil factors in rhizosphere as well as soil factors and bulb quality. In general, soil nutrient status and bulb quality decreased with the increase of years. Conclusion::The quality of F. taibaiensis is mainly affected by its rhizosphere soil factors. In the process of field conservation and artificial cultivation, attention shall be paid to increase or decrease of the content of soil nutrients and their proportional relationship according to actual situations, so as to ensure the quality of F. taibaiensis.
ABSTRACT
Objective: To study the variation patterns of rhizospheric soil nutrient and the content of nutrient elements for Fritillaria taipaiensis,in order to provide the theoretical base for the soil improvement and balanced fertilization during the artificial cultivation. Method: Totally 14 samples of rhizospheric soil of Fritillaria taipaiensis from different origins and years were taken as the research objects. Total N,available N,total P,available P,total K,available K,organic matter,pH and 7 nutrient element contents (Ca,Mg,Na,Mn,Zn,Cu and Ni) were analyzed by the soil agrochemical analysis method combined with the atomic absorption spectrophotometry. SPSS 22.0 software was applied for data multiple comparison and correlation analysis. Result: The all results showed significant differences (PF. taipaiensis. The content of total N,available N,total P,available P and organic matter of rhizospheric soil collected from cultivated varieties decreased with the increase of years,and the content of total K,available K and pH decreased first and then increased. However,the soil physical and chemical properties of wild varieties had no obvious change with the increase of years. The content of Ca,Mg,Na and Cu of soil from cultivated varieties decreased with the increase of years,while the content of Mn decreased first and then increased. And Zn and Ni showed no significant change with the increase of years. Compared with cultivated varieties,the content of Ca,Mg,Na,Mn and Cu increased first and then decreased. The content of Zn and Ni showed no obvious change. In general,the rhizospheric soil nutrient and the content of nutrient elements for wild F. taipaiensis were superior to those of cultivated varieties. Conclusion: The third year is the turning point of F. taipaiensis growth. The rhizospheric soil nutrient and the content of nutrient elements decreased obviously after three years. Attention shall be given to the balanced fertilization,the improvement of soil quality and the prevention of the cropping during cultivation of F. taipaiensis.