Abstract: In three successive years, seeds of the spring wheat were presoaked in the solution of growth-promoting substances (GPS) from nitrogen-fixing algae (1% in concentration) before planted in Hailun county, Heilongjiang province. The treatment accelerated germination of the seeds and growth of the roots and the plumules. Germination rate in the field was increased by over 18%. Seedling rate in the field was increased by 9-17.8%. Spraying with the solution at the three-leaved stage accelerated the growth of the seedling and significantly promoted the development of the roots. The treatment accelerated tillering and resulted in increased number of tillers, higher rate of spike and higher protein content in the seeds- The production was increased by 5-10%. This study represented the first field application by the GPS to a large area of 250 mu.