[Effect of organic amendments on soil fungi community and continuous cropping Panax quinquefolium].
摘要
OBJECTIVE: To study the effect of different organic amendments treated replant soil and to find the relations between the soil fungi community and the growth of Panax quinquefolium L. seedling. METHODS: The soil was treated with bone meal and Perilla frutescens root meal, the rate of seedling emergence, incidence of rot root and root weight were investigated. The fungi community and the pathogen, Fusarium solani and Phytophthora cactorum population were counted by soil dilution plating technique. RESULTS: The organic amendments especially Perilla frutescens root meal treated soil could reduce the population of Fusarium solani and Phytophthora cactorum in soil, thus lessen the root disease of continuous cropping Panax quinquefolium and increase survival of weedling. CONCLUSION: Adding suitable organic amendments in soil can change the soil fungi community and be beneficial to solving the replant problem of Panax quinquefolium.