Karamshuk Z P
Mikrobiologiia. 1976 Mar-Apr;45(2):347-9.
About 250 strains of actinomycetes have been isolated from dark chestnut soil of the Northern Kazakhstan in crop rotation. Nitrogen fixing actinomycetes constituted 12% of the total number. Their productivity was rather low: from 0.11 o 1.77 mgN2/g of assimilated sucrose. But since their number is high, these microorganisms may play an important role in fixation of molecular nitrogen and maintenance of nitrogen equilibrium in soil during crop rotation.
从哈萨克斯坦北部轮作作物的暗栗钙土中已分离出约250株放线菌。固氮放线菌占总数的12%。它们的固氮能力相当低：每克同化蔗糖可固定0.11至1.77毫克N2。但由于它们数量众多，这些微生物在轮作期间土壤中分子态氮的固定和氮平衡的维持方面可能发挥重要作用。
