Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2014, Vol. 30 ›› Issue (24): 66-70.doi: 10.11924/j.issn.1000-6850.2014-0125

• 23 • Previous Articles     Next Articles

Effect of Different Coal-based Humic Acids on the Leaching of Zinc in Soil

  

  • Received:2014-01-13 Revised:2014-02-16 Online:2014-08-25 Published:2014-08-25

Abstract: In order to understand the effects of different oal-based humic acids on the zinc leaching in soil and to explore their regulation effects on the mobilization of zinc in soil in further. A soil column leaching method was adopted to study the effects of 11 kinds of coal-based humic acids and EDTA on the zinc leaching in soil under the two types of leaching way (deionized water leaching and 5% KCl solution leaching). The results showed that the coal-based humic acids of No. 1-10 had certain passivation effect on the zinc leaching in soil and reduced the migration of zinc in soil. The coal-based humic acid of No. 11 increased the migration of zinc in soil. But the leaching effects of the coal-based humic acids of No. 1-11 were all lower than that of EDTA. The effect of 5% KCl solution on zinc leaching in soil was better than that of deionized water.