Abstract:
Panax notoginseng is a precious Chinese endemic herbal medicine. Its growth is affected by soil-borne diseases and can even lead to serious death. Biomass materials have obvious values in the prevention and treatment of soil diseases, but it has seldom been applied to the cultivation of
P. notoginseng. In order to study the mechanism of prevention and control of soil-borne diseases by biomass material, biomaterial A made from high temperature baking and biomaterial B from fermentation were selected as experimental materials; In situ cultivation experiment was carried out to investigate the relative effect of biomass material on control (CK) and three elements compound fertilizer treatment (F); Seedling emergence, root rot prevention and survival rate of seedlings were recorded; Physical-chemical properties and enzymatic activities of the soil were also analyzed . The results showed that
P. notoginseng in CK and F treatment groups all died in 4 months without biomass material treatment. FA, FB, AB and FAB treatments with different biomass materials had significant effects on reducing the harm of root rot on
P. notoginseng, increasing the emergence rate and survival rate of
P. notoginseng in the middle and late growing stages, and the effects had very significant difference with CK and F treatments (
P < 0.01). Biomass material application increased the pH, cellulase, protease, dehydrogenase, phosphatase, urease activity (
P <0.05), decreased the EC value and the concentration of salt ions in soil (
P <0.05). The comprehensive evaluation of each treatment on the the control of
P. notoginseng soil borne diseases was FAB> AB> FA> FB> F> CK. A new method for the biological control of soil-borne disease of P.
notoginseng is provided in this study.