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为了探明麻疯树林地土壤微生物类群的生态分布情况,研究了1～10年1,1～20年,21～30年的不同年龄麻疯树林地土壤细菌、真菌及放线菌的数量和类群组成。结果表明:3种林地土壤微生物的数量和种类组成有明显差异,随着林龄的增加微生物数量和种类呈递减趋势;不同土层的微生物数量变化也有所不同,但3种林地都有一个共同特点,即26～30 cm范围内的微生物总数最少;细菌在不同年龄麻疯树林地的各个土层中均有分布,数量明显高于放线菌和真菌;在林地内共分离出土壤真菌20属,其中,假丝酵母属为3个不同年龄麻疯树林地土壤中的优势菌属。
In order to find out the ecological distribution of soil microbial groups in Jatropha curcas forest, the numbers of soil bacteria, fungi and actinomycetes in the soil of 1, 1 to 1 year, 1 to 20 years and 21 to 30 years in Jatropha curcas forest Group composition. The results showed that there was a significant difference in the number and species composition of soil microbes among the three forest types. The number and species of microorganisms showed a decreasing trend with the increase of forest age. The change of the number of microbes in different soil layers was also different, but there was a common The total number of microbes in the range of 26-30 cm was the smallest. Bacteria were distributed in all soil layers of Jatropha curvaceae at different ages, which was significantly higher than that of actinomycetes and fungi. Soil fungi 20 Among them, Candida is the dominant genus in soil of Jatropha curcas in three different ages.