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本文从调节老参地土壤微生物生态条件出发,研究了老参地经改良后微生物生态类群的变化。试验结果表明,新林土经人参连栽后,各类微生物的数量明显减少,微生物生理类群的活性降低,经改良后各类微生物的数量又显著增加,活性有所提高,特别是放线菌、木霉以及VA菌根孢子数量的增加和土壤线虫的减少可能是老参地肥力恢复的主要指标。
In this paper, from the regulation of the soil microbial ecology of Laoshendi, we studied the changes of the microbial community after the improvement. The results showed that after the new forest soil was ginseng planted, the number of all kinds of microorganisms decreased significantly and the activity of microbial physiological groups decreased. After the improvement, the number of all kinds of microorganisms increased remarkably and the activity increased, especially actinomycetes , Trichoderma and VA mycorrhizal spores and the reduction of soil nematodes may be the main indicators of the fertility of old ginseng.