STUDY ON FERTILITY CHARACTERISTICS OF YELLOW PADDY SOIL, AND ITS IMPROVEMENT AND UTILIZATION

The low-yiedding factors of yellow paddy soil is shallow plough layer, bad plowing property, low nutrition and nutrive disturbance. The poor productivity of this soil is characterized to be nutrient slow-supply in rice early growing stage, lesser efficiency, low tillering capacity and smaller metabolic pool which could not congruent with rich metabolic source.As the results we studied in Fujian showed to combine the application of organic manure with other agronomic practice such as deep plonghing rationally, increasing potassium fertilizer and adjusting N.P.K. nutrient rate, reasonable application of microfertilizer, was the effective measure for the comprehensive improvement and utilization of yellow paddy soil.