and its basic reasearch has made great development, In order to bring into full play the charaeter of Two-line systen hybrid rice's high yield and provide scientific basis for reasonable fertilizer application, We applied differend hybrid rice strains marked by radioactive tracer 32 P to understand the character of Two-line system hybrid rice's absorbing and transporting phosphate nutrition.
The relationship of growth and development between above ground organs and roots of winter wheat, Lumai 14, was studied using 32 P tracer. The results showed that before the spike formation, dry matter accumulation in roots, stems and leaves were synchronous, and after that they were asynchronous.
This article describes a study on the law that phosphorous in sewage acts in different soil using radiation 32 P tracer technology on soil pillar artificially simulated and summarily calculates the experimental date. The result is that red and purple soil have strong ability to remove the phosphorous in sewage,but the phosphorous obviously shows different action in different soil.
Self-diffusion coefficients of phosphate in four soils of different texture at varying water content and temperature were measured by the methods of diffusion half-cells and diffusion tube using 32p-labelled KH2PO4 solution.