METHOD OF INCREASING CONTENT OF NITROGEN-FIXING BACTERIA OF AZOTOBACTER TYPE IN RHIZOSPHERE OF PINE AND FIR SPROUTS AND SEEDLINGS (VARIANTS) Russian patent published in 2008 - IPC A01C1/00 

FIELD: technological processes.

SUBSTANCE: invention of first variant includes preplant treatment of pine and fir seeds by electromagnetic field of extremely-high frequency of nanolevel intensity (10^-16-10^-10) Watt/cm² in the frequency range of (30-60) GHz with exposure of (5-15) minutes after stratification of pine and fir seeds, and according to the second variant, preplant treatment of pine and fir seeds is done by means of simultaneous action of electromagnetic field of ultrahigh frequency in the frequency range of (0.5-3) GHz with intensity of (0.1-0.3) Watt/cm² with exposure of (10-30) seconds for seeds finish drying and action of electromagnetic field of extremely-high frequency of nanolevel intensity of (10^-16-10^-10) Watt/cm² in the frequency range of (30-60) GHz with exposure of (5-15) minutes after pine and fir seeds stratification before planting.

EFFECT: invention restores natural balance of plant-microbe mutual effect of forest biogeocenosis and reduces production costs.

2 cl, 1 dwg, 1 tbl