Amelioration of Moderate Saline-alkali Soil by Desulfurized Gypsum Application and the Resulting Effect on the Growth and Rhizosphere Environment of Avena Sativa
XU Qing-tao
LI Yu-bo
YAN Shou-gang
LI Xiao-dong
GAO Biao
Abstract：This study evaluated the ameliorating effect of applying desulfurized gypsum on moderate saline-alkali soil and the resultant impact on the growth of Avena sativas.Using the Avena sativas variety Baiyan No.2,a pot trial was conducted,which involved five treat-ments:a control (not treated with desulfurized gypsum)and treatments 1,2,3,and 4 in which desulfurized gypsum was applied at the rates of 15,30,45,and 60 t/hm2,respectively.Consequently,the pH value of the soda saline soil decreased by 1.1,1.12,1.17 and 1.12 in treatments 1,2,3,and 4,respectively,while the pH value in the control only declined by 0.40.In addition,treatments 1,2, 3,and 4 showed an increase in EC value by 0.40,0.77,0.84,and 0.87 mS/cm,respectively,in comparison with a decrease in EC by 0.19 mS/cm in the control.In relation to the control,application of desulfurized gypsum at the rate of 45 t/hm2 increased plant height by 28.23% and 91.00% in growing period and harvest time,respectively;and also elevated dry masses of plant and roots at harvest time by 98.33% and 30.40%,respectively.Therefore,application of desulfurization gypsum effectively improved the chemical proper-ties of the soda saline soil,resulting in a growth-promoting effect on Avena sativa.
Keywords：Soda saline soilAvena sativaDesulfurized gypsumpH valueSoil EC value
Publication Date：2016-07-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 42-44 )