| Traditional Chinese medicine（TCM）is a unique traditional culture and industry in China and excellent
Chinese medicinal materials are strategic resources related to people’s livelihood. In recent years, with the increasing
demand for Chinese medicinal materials at home and abroad, the types and areas of artificially cultivated medicinal plants
have increased greatly. Due to the limitations of cultivated land, planting conditions and authenticity, serious continuous
cropping obstacles commonly exist in the intensive cultivation of medicinal plants, especially in the medicinal plants
with tuberous roots as medicine. At present, continuous cropping obstacle has become the key factor restricting the yield
and quality of medicinal materials, and seriously hindered the standardized planting and industrialization development of medicinal materials. In this review, the latest research progresses on the damage, formation mechanism and control
measures of continuous cropping obstacles of medicinal plants were summarized and it was pointed out that the continuous
cropping obstacle problem was mainly the result of combined effect of plant - soil - microbial. The causes of continuous
cropping obstacles of medicinal plants were analyzed, which mainly included three aspects, namely, soil nutrient deficiency
and imbalance, allelopathic autotoxicity and the aggravation of soil-borne diseases caused by destruction of rhizosphere
microecology. The control measures of continuous cropping obstacles were put forward, including selection of excellent
strains, soil sterilization, establishment of reasonable farming system, application of microbial fertilizer. The direction and
key points of future research were discussed in order to provide scientific references for the cultivation and management of
medicinal plants to overcome continuous cropping obstacles. |
