利用天津农学院土培水稻盆栽试验土壤样品，模拟室内重金属污染条件下，研究

利用天津农学院土培水稻盆栽试验土壤样品，模拟室内重金属污染条件下，研究不同浓度的微生物絮凝剂在不同浓度的镉胁迫下对土壤脲酶、过氧化氢酶、脱氢酶和土壤微生物生物量的影响。结果表明，在重金属Cd胁迫下，微生物絮凝剂对土壤放线菌和真菌的生物量均无显著影响，对中层土样中细菌的生物量影响比较显著。另外，在重金属胁迫下，微生物絮凝剂对供试土壤上层、中层、下层的脲酶活性均有显著影响，刺激了脲酶活性。絮凝剂对上层、中层土样的过氧化氢酶活性无明显影响，但是对于下层的酶活性具有显著影响，絮凝剂在一定程度上安抚了重金属Cd的抑制作用。絮凝剂对上层土样的脱氢酶活性影响较大，抑制了重金属Cd的毒性作用，对中层、下层土样的脱氢酶活性没有显著影响。

結果 (英文) 1:

Soil pot experiment of rice soil samples in Tianjin agricultural college, under simulated indoor pollution by heavy metals, different concentrations of microbial flocculant research in different concentrations of cadmium stress on soil urease, catalase, dehydrogenase, and effects of soil microbial biomass. Results showed that heavy metal Cd under the stress of microbial flocculant on soil actinomycete and fungal biomass were not significantly affected, middle managers significantly influence the biomass of bacteria in the soil. In addition, under heavy metal stress, microbial flocculant on the tested soils of the upper, middle and lower levels of urease activity has a significant impact, fueling a urease activity. Flocculant on activity of catalase in soil samples of upper, Middle had no significant effect, but for lower enzymatic activity has significant influence, flocculant to a certain extent, to appease the inhibitory effect of heavy metal Cd. Flocculating agents greater influence on Dehydrogenase activity in the upper soil samples, inhibit the toxic effects of heavy metal Cd, on the middle and lower levels of soil samples of Dehydrogenase activity was not significantly affected.

結果 (英文) 2:

Use of Tianjin Agricultural soil culture rice potting soil sample test, simulate heavy metal pollution of indoor conditions, different concentrations of microbial flocculant at different concentrations of cadmium stress on soil urease, catalase, dehydrogenase, and soil microbial biomass impact. The results show that the heavy metals Cd stress, microbial flocculant put no significant effect on actinomycetes and fungi in soil biomass, biomass of bacteria in soil samples on the middle of the more significant. In addition, under heavy metal stress test on soil microbial flocculant upper, middle, lower urease activity had a significant effect, stimulating the urease activity. Flocculant no effect on the upper, middle soil catalase activity was significantly affected, but for the lower activity have a significant impact, flocculants appease a certain extent of inhibition of Cd. Flocculant effect on the upper soil dehydrogenase activity greater inhibition of the toxic effects of heavy metals Cd, to the middle, did not significantly affect the underlying soil dehydrogenase activity.

結果 (英文) 3:

Simulation of indoor under the conditions of heavy metal pollution of different concentrations of microbial flocculant in different concentrations under Cadmium Stress of soil urease, catalase, dehydrogenase activity and soil microbial biomass influence by the Tianjin Agricultural College pot rice soil pot experiment samples. The results showed that microbial flocculant had no significant effect on the biomass of Soil Actinomycetes and fungi under heavy metal Cd stress, and had a significant effect on the biomass of middle soil sample.. In addition, under the heavy metal stress, microbial flocculant had a significant effect on the urease activity of the upper, middle and lower levels of the soil, and stimulated urease activity..Flocculant of upper layer, a middle layer of soil catalase activity was not affected, but for the lower enzyme activity has significant effect, flocculant in a certain extent to appease the inhibitory effects of heavy metal CD. The effect of the flocculant on the dehydrogenase activity of the upper soil sample was greatly affected by the inhibition of the toxic effect of the heavy metal Cd, and it had no significant effect on the activity of the dehydrogenase activity in the middle and the lower layer..