On the Connections between Sanchi Root Rot and Edaphon Dynamics in No-Tillage Sanchi-Planted Soil

摘要

Sanchi is a rare and unique Chinese medical material with extremely high medical value. However, it is often vulnerable to root rot during factitious reproduction. A research, taking Sanchi no-tillage soil and root rot plants as study targets with the purpose to monitor the amounts of microbe colonies and strains in soil around Sanchi roots, has been carried out. The result showed that, although the soil temperature could change the amount of bacteria, fungi, actinomyces and microzyme in soil around Sanchi roots, it had no statistic correlation with the amount of these strains. The occurrence of Sanchi root rot was not only owing to the reported pseudomonas, but also to anaerobic bacteria, fungi and actinomyces which were also the major pathogens leading to Sanchi root rot. What¡¯s more, anaerobic bacteria were the primary strain causing Sanchi root rot. For a healthy Sanchi plant, the microbe amount in soil around its roots was close to this proportion: fungus: actinomyce: bacteria = 1: 1.12: 67.90E2. Once the plant was affected by root rot, the amount of microzyme would change. There was a linear relation existing between the occurrence of root rot and the amount of microzyme. The discovery of major pathogens leading to Sanchi root rot and the normal proportion of microbe amount in rhizosphere soil of Sanchi provided a scientific basis for the application of technologies for the treatment of root rot diseases.