Sadykov B F, Umarov M M
Mikrobiologiia. 1980 Jan-Feb;49(1):147-50.
The activity of the nitrogen fixation in the phyllosphere of plants was assayed directly under the natural conditions. The highest rate of nitrogen fixation in the phylosphere was found in plants belonging to the family Compositae (4.34 . 10(-1) mg N2/m2/hr) while the lowest rate was observed in Acer platanoides (0.12 . 10(-1) mg N2/m2/hr), which constituted, on the average, from 0.1 to 10% of nitrogen assimilated by the plant in the course of its vital activity. The ratio between the nitrogen-fixing activity in the rhizosphere and phyllosphere of different cereals was almost the same (6 : 1).
在自然条件下直接测定了植物叶际的固氮活性。叶际固氮率最高的是菊科植物（4.34×10⁻¹毫克N₂/平方米/小时），而最低的是挪威槭（0.12×10⁻¹毫克N₂/平方米/小时），平均占植物生命活动过程中同化氮的0.1%至10%。不同谷物根际和叶际的固氮活性之比几乎相同（6∶1）。
