Application of Rice Husk Charcoal in Cultivated Soil to Control Agricultural Non-point Source Pollution
LIU Xin
ZHAO Zhen
DAI Tianlei
TANG Xiaolan
XU Mengwen
ZHANG Qisheng
Abstract：To study the improving effect of rice husk charcoal on non-point source pollution of arable land,with no application of biochar as control,the rice husk charcoal was tilled in the surface soil in a different volume ratio,and the changes of physical and chemical properties of soil,including temperature, pH value, organic matter content, moisture content, soil porosity, CEC, content of Al, and the concentrations of nitrogen and phosphorus in farm runoff water were investigated.The results showed that the physical and chemical properties of soil were improved,and the interception ability of nitrogen and phosphorus in soil was enhanced after use of rice husk charcoal.When the ratio of charcoal to soil was 0.6,the improving effect was the best,the average temperature of soil increased by 2.03 ℃,pH value increased by 13.56%,the contents of organic matter,moisture,soil porosity,CEC increased by 43.11%, 19.60%,54.55%,65.50%,and the content of Al decreased by 4.84% compared to the treatment without rice husk charcoal,meanwhile the concentrations of TN,TP,COD,NH3-N reduced by 82.69%, 90.32%,60.33%,83. 46%,respectively. The application of rice husk charcoal could improve the physical and chemical properties of soil,enhance the interception ability of nitrogen and phosphorus in soil and control the agricultural non-point source pollution effectively.
Keywords：Rice husk charcoalEutrophicationAgricultural non-point source pollutionNitrogen and phosphorus lossSoil improvement
Publication Date：2018-03-02
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：6( 49-54 )