土壤水分与通气性对硅酸盐细菌生长的影响

The effect of water content and aeration of soil on the growth of silicate bacteria

将同量的硅酸盐细菌分别接种到不同水分的土壤(10%、15%、25%、35%)和不同通气性条件的土壤(1.0、1.2、1.4、1.6 g/cm3)中,分别在恒温培养后的第3天和第10天时取样,用平板法记数硅酸盐细菌的生长情况,并对结果进行方差分析。结果显示:在土壤水分(绝对含水量)为15%左右,土壤容重为1.2 g/cm3时,硅酸盐细菌生长更好,同时对不同处理间硅酸盐细菌的生长结果进行方差分析,差异极为显著。

The same number of silicate bacteria was inoculated into the soils that have variations of water content （ 10%, 15%, 25%, 35% ）, and have variations of aeration （ 1.0 g/cm^3, 1.2 g/cm^3, 1.4 g/cm^3, 1.6 g/cm^3 soil）. They were cultured with constant temperature, and harvested after 3 days culture and 10 days culture separately. The method of agar plate culture was applied for the calculation of silicate bacteria, and the analysis of variance was applied for the study. The results indicate that the conditions of 15% water content and 1.2 g/cm^3 soil aeration were the better conditions for the growth of silicate bacteria.