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以棘托竹荪为材料,在福建省泰宁县新桥乡大源村进行田间试验,对不同生长时期竹荪覆土层中土壤微生物、土壤理化性质及其土壤酶活性进行了研究。结果表明:在竹荪生长过程中,土壤中细菌、真菌、放线菌的数量依次增加29.76%、262.30%、201.12%,其中现蕾期,细菌所占土壤微生物总数的比例达到了99.75%;土壤pH呈递减趋势,全氮和全磷有所增加,桃形期含量显著高于其它时期,而全钾和有机质含量在成熟期达到最低值,与现蕾期含量相比存在显著性差异;土壤中脲酶、蔗糖酶和过氧化氢酶活性,桃形期达到最大值,其中成熟期土壤中蔗糖酶活性显著低于其它时期,表明土壤肥力出现了一定程度的降低,这与竹荪生长消耗土壤中大量营养物质造成肥力降低也是相符的。
Taking Dictyophora as the material, a field experiment was conducted in Dayuan Village, Xinqiao Township, Taining County, Fujian Province. The soil microorganisms, soil physical and chemical properties and soil enzyme activities in the soil layers of Dictyophora were studied in different growth periods. The results showed that the quantity of bacteria, fungi and actinomycetes increased by 29.76%, 262.30% and 201.12% respectively in the growth of Dictyophora, and the proportion of bacteria in the soil reached 99.75% at the budding stage. The soil pH showed a decreasing trend, total nitrogen and total phosphorus increased, the content of peach stage was significantly higher than the other periods, and the content of total potassium and organic matter reached the lowest value at maturity, which was significantly different from the content of budding stage. Soil urease, sucrase and catalase activity, peach reached the maximum, of which maturity of soil sucrase activity was significantly lower than other periods, indicating that soil fertility showed a certain degree of decline, and Dictyophora growth and consumption It is also consistent that fertility is reduced by a large amount of nutrients in the soil.