东乡普通野生稻根际微生物群落特征研究

[目的]研究东乡普通野生稻（Oryza rufipogon Griff．）根际微生物群落特征。[方法]采用氯仿熏蒸浸提法测定根系微生物生物量碳、氮；采用平板稀释培养法测定群落组成；采用最大或然计数法测定微生物生理群。[结果]东乡野生稻根际微生物生物量碳、氮平均值分别为83．02和16．98mg／kg（土），较普通栽培稻低；根际可培养微生物中细菌〉放线菌〉真菌；氮素生理群中氨化细茵〉好氧固氮菌〉反硝化细菌〉嫌气性固氮菌〉硝化细菌〉亚硝化细菌。[结论]东乡野生稻根际微生物群落组成与普通栽培稻相比有差异。

Studies on the Microbial Community in the Rhizosphere Soil of Dongxiang Wild Rice

[Objective] The aim was to study the characteristics of microbial community in the rhizosphere soil of Dongxiang wild rice (Oryza rufipogon Griff.). [Method] The microbial biomass carbon and nitrogen was estimated by the chloroform fumigation extraction method; the microbial community composition and nitrogen cycling microbial functional groups were investigated by the dilution plate culture method and the most probable number methods respectively. [Result] The microbial biomass carbon and nitrogen, in rhiz...