Effect of natural zeolite on nutrient preserving capability of degraded slope soil in south China

Soil column leaching experiment showed that after zeolite application,the content of nitrogen and potassium in leachate was reduced significantly,but no significant effect was detected for phosphate.This application had a positive effect on soil available nitrogen,phosphorus and potassium.It increased the content of soil AL-P and Fe-P,but did not increase the NO - 3-N content in leachate.