Study On The Influence Of Sludge Compost And Compost Compound Fertilizer On The Biological Effect And Environmental Effect Of Turfgrass

Aiming at the present situation of the increasing of waste water displacement amount ,we used sewage sludge which contains a lot of organic matter and nutrient for the plant to manufacture sludge compost and sludge compound fertilizer. It showed that sludge compost and sludge compound fertilizer exerted a good influence to turfgrass growth They made turfgrass?s chlorophyll content get a raise Comparing with the chemical fertilizer, the heavy metal content of turfgrass blade treated by sludge compost had no remarkable difference With the increasing of sludge compost and sludge compound fertilizer, the btomass of turfgrass increased Sludge compost brought into play slow-release fertilizer action In pot experiment , sludge compost and sludge compound fertilizer promoted turfgrass to absorb nitrogen The content of nitrogen of turfgrass blade treated by sludge compost remarkably increased than that in the control treatment.ln addition sludge compost and sludge compound fertilizer improved the total and effective nutrient contents of N~P and K in soil Though the content of heavy metal treated by sludge compost was higher than that the control soil, it was far behind comparing with some national environment standard Sludge compost had clear effect on improving the phsicochemical properties of soil The content of soil organic matter increased remarkably and the value of pH reduced to be close to neutrality owing to applying sludge compost High-amount sludge compost increased cation exchange capation and total salt of soil, but total salt of soil was lower than salt-affected soil?s standard Therefore ,there are good effections to cultivate soil fertility for turfgrass because of applying sludge compost.Through this research , sludge compost and sludge compound fertilizer were applied to gardens and green lands ,which avoided food chain and solved the problem of sludge handle for sewage treatment plant Sludge compost and sludge compound fertilizer are ideal organic fertilizer for turfgrass which make the land utilization of sludge have a good prospects.