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采用接种培养方法研究了不同木质素降解菌对木质素降解率、腐殖质总量、各组分含量及胡敏酸E4/E6的影响。结果表明,接种黄孢原毛平革菌和栗褐链霉菌对稻草的降解均有所提高,56天培养后,二者的木质素降解率分别达到40.86%和31.04%,而对照组(只含有土著微生物)只有10.56%。接种黄孢原毛平革菌和栗褐链霉菌显著提高了腐殖质产量,这两种不同木质素降解菌产生腐殖质的最大值分别是对照组的2.10和2.13倍,但二者降解木质素形成腐殖质的途径有所不同。培养结束后,各条件下土壤中胡敏酸E4/E6均有所增加,表明胡敏酪的芒构化程度有所减弱。
The effects of different ligninolytic bacteria on the degradation rate of lignin, the total amount of humus, the content of each component and the humic acid E4 / E6 were studied by inoculation culture method. The results showed that inoculation of Phanerochaete chrysosporium and Streptomyces lividans enhanced the degradation of straw. After 56 days, the lignin degradation rates of the two cultivars reached 40.86% and 31.04% respectively, while the control group (only indigenous Microorganisms) only 10.56%. Inoculation of Phanerochaete chrysosporium and Streptomyces lividans significantly increased the humus yield. The maximum values of humus production by these two different lignin-degrading bacteria were 2.10 and 2.13 times that of the control group, respectively, but both of them degrade lignin to form humus Different. After culturing, the content of humic acid E4 / E6 in soil increased under all conditions, indicating that the degree of manganism of humilus decreased.