Gochelashvili Z A
Mikrobiologiia. 1978 Sep-Oct;47(5):860-5.
The rate of biological nitrogen fixation was determined by the acetylene technique in soils and on the roots of orange, mandarin and lemon trees growing in red, yellow, podzolic, alluvial brown forest, and humus-calcareous soils. The minimum nitrogen fixation in podzolic soils was 3--8 kg of nitrogen per hectare per vegetative period. The maximum nitrogen fixation (48--51 kg N per hectare) was found in red and humus-calcareous soils of orange plantations. One dose of nitrogen fertilizers with liming increased the nitrogen fixing activity of subtropic podzolic soils of mandarin plantations whereas a triple dose inhibited the activity. The rate of nitrogen fixation by the root microflora was 3--4 times higher than that by the soil microflora.
采用乙炔技术测定了生长在红壤、黄壤、灰化土、冲积棕色森林土和腐殖质石灰土中的土壤以及橙子、柑橘和柠檬树根系的生物固氮率。灰化土中最低固氮量为每生长季每公顷3 - 8千克氮。橙子种植园的红壤和腐殖质石灰土中固氮量最高（每公顷48 - 51千克氮）。单剂量氮肥加石灰提高了柑橘种植园亚热带灰化土的固氮活性，而三剂量则抑制了该活性。根系微生物区系的固氮率比土壤微生物区系高3 - 4倍。
