Effects Of Different Ecological Factors On The Yield And The Ferulic Acid Content Of Angelica Sinensis

Objective: The effects of different ecological factors on the yield and the ferulic acidcontent of Angelica sinensis were studied, providing references for the choice of suitableproduction areas and the optimization of cultivation measures of A. sinensis.Methods: A. sinensis was investigated in the field experiment, laboratory determinationand statistical analysis, to explore the effects of insulation measures, light, moisture,altitudinal gradient and soil on the yield and the ferulic acid content of A. sinensis.Results:(1) The order from high to low yield and ferulic acid content according to differentinsulation measures: greenhouse, black plastic film mulching, no plastic film mulching.(2)50%shading got the highest yield of A. sinensis, followed by75%and25%orderly;the ferulic acid content increased with shading rate increased,75%shading acquired thehighest content, followed by50%and25%orderly.(3) Irrigating2L/m2weekly got the highest yield, followed by1L/m2and10L/m2orderly; the ferulic acid content increased with the irrigation increased within10L/m2, by anorder of5L/m2,2L/m2and1L/m2.(4) In the range of experimental design, the yield was the highest at the altitude of2624m, lowest at the altitude of3106m, the average yield between2624to2810m was higher than2294~2519m and2890~3106m; the ferulic acid content was also the highest at the altitudeof2624m, lowest at2810m the average ferulic acid content between2294to2519m washigher than2624~2810m and2890~3106m.(5) Correlation analysis showed both positive and negative correlation between soilnutrient and yield, so did ferulic acid content. Except a negative correlation between Mgcontent and yield, other nutrients were positively correlated with the yield, the total N(r=0.7181) and available K (r=0.7252) content had a significant positive correlation with theyield; the total N, total K, available K, Ca, Cu, Zn, Ni, Mn content were positively correlatedwith the ferulic acid content, other nutrients were negatively correlated with the ferulic acidcontent, the total N (r=0.6891) and Ni (r=0.6764) content had a significant positivecorrelation with the ferulic acid content, available P (r=-0.6987) and Mg (r=-0.7321) content had a significant negative correlation with the ferulic acid content.Conclusion: The results showed that an altitude of about2600m could be choosen asthe suitable planting area, using greenhouse cultivation techniques, shade50%~75%andwater control at weekly1.33~3.34×103L/667m2are advantageous to improve the yield andthe ferulic acid content of A. sinensis; the total N and available K content of soil are closelyrelated to yield, the total N, available P, Ni and Mg content of soil are closely related to ferulicacid content. The conclusion can provide a scientific basis for the choice of suitableproduction areas and the optimization of cultivation measures of A. sinensis.