硫酸铝对苏打盐碱土的改良作用研究.pdfVIP

20 4 Vol. 20 No. 4 2006 8 Journal of Soil and Water Conservation Aug. , 2006 a 王　宇, 韩　兴, 赵兰坡* ( , 1 0118) : , : , ( 0.005 mm) , , , , + + :Al H , pH ; , , ; CO2- HCO- , , , - , : S15 ; S156. 2; ; ; ; : 15 ; 156. 2: : 1009-2242( 2006) 04-0050-04 S S A - Study on Function of Aluminum Sulf ate on Soda Al kali saline Soil Improvement * WANG Yu, HAN Xing, ZHAO Lan-po ( Colleg e of R esources and E nv ironment , J ilin A g r icultural Univ er sity , Chang ch un , J ilin 1 0118) : , - - Abstract After added aluminum sulfate the physico chemical properties of soda alkali saline soil have had the remarkable improvement. The soil physical property performance is soil structure characteristic remarkable improvement, the aggregate ( 0. 005 mm) remarkable increasing, the bulk specific gravity reduces, the degree + of expansion increases and the porosity increases. T he soil chemistry nature performance is Al hydrolyzed and + , ; , produces massive H pH of w ater and soil reduced Along w ith amount increasing of aluminum sulfate CEC remarkably increasing, ESP remarkably reducing, CO2- and HCO- content reduced along w ith the aluminum sulfate amount increasing. The result indicated, af