PBS降解产物对土壤微生物生理特性的影响研究

Study on the impact of PBS degradation products on the soil microbes physiological features

以陕西的花园土为供试土壤,采用室内模拟,在土壤中添加一定量的聚丁二酸丁二醇酯(PBS),研究不同分子质量的PBS降解产物对土壤呼吸强度和微生物(细菌、真菌、放线菌和微生物总量)数量的影响.研究结果表明:PBS1(Mn为1.60×104)和PBS2(Mn为3.00×104)处理组均有利于土壤呼吸强度的增加,其中PBS2处理组的促进作用更加明显;PBS1和PBS2处理组在浓度较高时均有利于细菌、真菌、放线菌、微生物总量等数量的增加,但是两者在浓度较低时作用不明显.

Use the garden soil for the test soil, the indoor simulation, add a certain amount of Poly （butylene-Succinate） （PBS） in the soil, study the influence of the different molecular PBS degradation products on the soil respiration intensity and the number of microbial （bac- teria, fungi, actinomyces and microbial total）. The results showed that the soil respiration intensity were all increased contributed to the treatment group of PBS1 （Mn for 1.60× 10^4） and PBS2 （Mn for 3.00 × 10^4）, the facilitation of PBS2 treatment group was more appar- ent. In high concentration PBS1 and PBS2 treatment group were beneficial to bacteria, fungi, actinomyces, microbial of increase in the number of total amount, but both effect was not obvious in low concentration.