论文部分内容阅读
研究了大田栽培和自然光条件下，模拟紫外辐射（ＵＶ-Ｂ，２８０－３１５ｎｍ）增加对春小麦根际土壤微生物种群数量的影响。ＵＶ－Ｂ辐射能显著降低细菌总数以及放线菌和真菌数量；ＵＶ－Ｂ辐射对好氧性自生固氮菌、亚硝酸细菌、反硝化细菌、好氧性纤维素分解菌和解磷细菌数量也有显著的影响，但这种影响具有生育期之间的差异，春小麦根际土壤微生物种群数量与土壤营养成分有关。
The effects of UV-B radiation (UV-B, 280-315nm) on rhizosphere soil microbial populations in spring wheat were studied under field cultivation and natural light conditions. UV-B radiation can significantly reduce the total number of bacteria and actinomycetes and fungi; UV-B radiation aerobic Azotobacter, nitrite bacteria, denitrifying bacteria, aerobic cellulolytic bacteria and phosphate solubilizing bacteria were also significant However, this effect has the difference between growth stages. The quantity of rhizosphere soil microbial population in spring wheat is related to soil nutrient content.