| Popis: |
The most widespread chemical constraints on crop production from Chinese red soils include soil acidity, toxicity of Al, Mn and Fe, and deficiencies of the major nutrients N, P and K, as well as some minor nutrients such as B, Mo and Zn. Other nutrients which can be deficient include Mg, S and Si. Particular attention was paid to the N and P incorporated into the microbial biomass. The results indicate that this is an important pool of available N and P in the red soils and may have use as a biological index of nutrient availability. |
