Study on Mechanism of Sanqi (Panax notoginseng F.H.Chen) Replant Failure and Its Alleviation Technology(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Study on Mechanism of Sanqi (Panax notoginseng F.H.Chen) Replant Failure and Its Alleviation Technology

Author(s):: YANG Jianzhong1; GUAN Huilin2; LIU Dahui3; SUN Yuqin1; WEI Meili1; WANG Yong1; （1.Sanqi Research Institute of Wenshan，Wenshan University，Wenshan，Yunnan 663000；2.College of Energy and Environmental Science，Yunnan Normal University，Kunming，Yunnan 650021；3.Medicinal Plant Research Institute,Yunnan Academy of Agricuttural Sciences,Kunming，Yunnan 650021)

Keywords:: Sanqi (Panax notoginseng F.H.Chen); replant failure; soil microbe; activity of soil enzyme; soil nutrient; allylopathy

Abstract:: Replant failure of Sanqi (Panax notoginseng F.H.Chen) is a key issue for the development of its industrial.For years，our project team has conducted soil borne microbe cultivation，activities of soil enzymes test，analyses of physical and chemical traits of soil，and analyses of Sanqi rhizospheric compounds with Sanqi plants cultivated in soil of different year intervals and rhizosphere soil.The results showed that,the replant failure of Sanqi lied in four aspects，change of physical and chemical traits，evolution of microbe communities，decrease of enzyme activity，and accumulation of autotoxin in the soil；the ratios of amount of bacteria to fungi，bacteria to actinomycetes，and aerobic bacteria to anaerobic bacteria decreased with the aggravation of Sanqi root rot，and the ratios could be biological diagnosis indexes of fitness of a soil planting Sanqi；and a replant failure alleviation technology was optimized with the integration of acidity regulation，chemical fertilizer reduction，aeration increasing，and microbes rehabilitation of the soil.

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Last Update: 2016-08-17