| Popis: |
Effect of 3 fertilization systems in restoring the eroded red soil caused by soil erosion,which is a severely eroded red soil derived from Quaternary Red Clay,granite and slate,were studied with a pot experiment. The results showed that applying soil ameliorant Ⅱcould increase content of available P and organic material compared with applying chemical fertilizer,and also it could alleviate soil acidification and promote the use efficiency of soybean for fertilizer N and K,increase biomass and the number of microbe in soil . Applying organic fertilizer can increase the content of available N,P and K and organic material,while it also promote the use efficiency of soybean for fertilizer N,P and K,and increase microbial activities compared with application of chemical fertilizer. Of the three kinds of red soil derived from parental material, the available nutrient of Quaternary Red Clay was higher than granite and slate,and the utilization efficiency of soybean for fertilizer N grown on slate was higher than granite, but the utilization efficiency of soybean for fertilizer K grown on granite was lower than Quaternary Red Clay and slate, more fertilizer K should be applied to granite and slate. |
