稻壳制备的生物质炭对红壤和黄棕壤酸度的改良效果-生态与农村环境.pdfVIP

20 10, 26 ( 5) : 472- 476 Journal of E cology and R ural E nv ironm ent 1, 2 1 袁金华 , 徐仁扣 ( 1, 2 10008; 2 , 100049) : , 20 g kg- 1 , , pH , , : ; ; ; ; ; pH : S153 : A : 1673- 4831( 2010) 05- 0472- 05 Effects ofR iceHullBased Biochar Regulating A cidity of R ed Soil and Yellow Brown Soi.l YUAN J inhua 1, 2, X U R enkou 1 ( 1. State K ey L abo a to y of So il and Sustainable A g icultu e, Institute of Soil Sc ience, Ch inese A cadem y of Sc i ences, N an jing 210008, Ch ina; 2. G aduate U nive sity of Ch inese A cadem y of Sc iences, Be ij ing 100049, Ch ina) Abstract: B iocha, p epa ed out of ice hull th ough low tem pe a tu e py o ly sis, w as applied into ed so il and ye llow b own so il at a ate of 20 g kg- 1. T hen the so ils we e incubated in the labo ato y to check effec t of the application on so il ac id ity. It w as found that the inco po a tion of ice hull cha inc eased pH in both so ils to som e ex tent ove the cont o,l ma in ly by dec easing the con tents of exchangeable ac id and ex changeab le A l, and inc eas ing the content of exchangeable bases and the base satu a tion. T he inco po ation of ice hu ll cha also esulted in dec line of tox ic species of A l obv iously in so il solutions, w hich suggests that the add ition of ice hu ll cha cou ld a lleviate alum inum tox ic ity in acid so ils to p lants. T he am elio ating effect of ice hu ll cha w as g eate on ed so il than on yellow b own so il. Key w ords: ice hull cha; ed so il; ye llow b own soi;l so il ac idity; am elio ation; so il pH , [ 11- 12 ] , , , CO2 [ 1]