Effect of Organic Manure on Humic Acid and E4/E6 of Humus in Wind Blown Soil

Three years experiments were conducted to study the effect of organic manure application on humic acid and E4/E6 of humus in wind blown soil. The results indicated that different organic matter could improve the contents of humic acid in humus, compared with CK, the content of humic acid in the treatments of organic manure increased from 0. 02 C g/kg to 0. 17 C g/kg according to the data in 2000, but the ratio of humic acid to humus, compared with CK, decreased from 0. 17 to 2. 23 percent with the application of organic manure. The ratio of E4/E6 were no obvious difference in all organic manure treatments, but higher than that of CK, and kept dynamic changes.