WANG Hong-yan,CHEN Yuan,GUO Feng-xia,et al.Enhancement of Quality and Yield in Codonopsis pilosula Seedlings by Soil Fumigation with Dazomet[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(24):138-147.
WANG Hong-yan,CHEN Yuan,GUO Feng-xia,et al.Enhancement of Quality and Yield in Codonopsis pilosula Seedlings by Soil Fumigation with Dazomet[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(24):138-147. DOI: 10.13422/j.cnki.syfjx.20211416.
Enhancement of Quality and Yield in Codonopsis pilosula Seedlings by Soil Fumigation with Dazomet
To explore the high-efficiency and high-quality seedling raising method of
Codonopsis pilosula
.
Method
2
In the main production area of
C. pilosula
in the Tanchang county,Gansu province,after the soil was fumigated with dazomet (containing 98% methylisothiocyanate), four varieties of
C. pilosula
seedlings were raised. The dynamic change in growth and differences in quality and yield of
C. pilosula
seedlings after emergence were regularly determined.
Result
2
① The soil enzyme activity was first inhibited and then restored by soil fumigation,which increased the root length of
C. pilosula
seedlings by 9.8%. Besides, the field growth indexes such as plant height,plant width,stem length,stem diameter,number of branches,number of nodes,number of leaves, and fitted leaf area increased in varying degrees,and the plant height showed an "S"-shaped growth trend. "Gandang No.1" and "Gandang No.2" grew better than "Weidang No.1" and "Tanchang control". ② Fumigation reduced the incidence rate of
C. pilosula
root in the field by 4.9%,and the incidence rates of "Gandang No.1" and "Gandang No.2" were significantly lower than those of "Weidang No.1" and "Tanchang control". ③ Fumigation increased the total number of
C. pilosula
seedlings by 6.15×10
5
plants·hm
-2
,of which the number of primary seedlings increased by 45.3% and that of secondary seedlings increased by 42.2%. ④ Fumigation increased the seedling yield of
C. pilosula
by 42.4%. It showed the most significant effect on the yield of "Gandang No.2",which increased by 61.8%, and the weakest effect on the yield of "Gandang No.1",which increased by 15.4%. ⑤ Comprehensive analysis showed that the quality and yield of
C. pilosula
seedlings in the fumigation area were better than those in the non-fumigation area.
Conclusion
2
The results showed that soil fumigation showed a promoting effect on the seedling yield of
C. pilosula
in spite of different effects achieved in terms of different varieties.
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