脱硫废渣改良中度苏打碱土对燕麦生长与根际环境的影响  

Amelioration of Moderate Saline-alkali Soil by Desulfurized Gypsum Application and the Resulting Effect on the Growth and Rhizosphere Environment of Avena Sativa

作　　者：许清涛[1] 李玉波[1] 闫守刚[1] 李晓东[1] 高标[1] 

机构地区：[1]白城师范学院,吉林白城137000

出　　处：《大麦与谷类科学》2016年第3期42-44,共3页Barley and Cereal Sciences

基　　金：吉林省科技厅项目(20130206027NY;20120408);教育厅项目(2014第406号;2015第414号)

摘　　要：通过盆栽的方法,以脱硫废渣改良苏打碱土种植燕麦,测试不同脱硫废渣施用量对土壤p H、含盐碱量和燕麦的株高、生物量的影响。结果表明:与原始土壤相比,p H值分别降低了0.40、1.10、1.12、1.17、1.12;EC值分别增加了-0.19、0.40、0.77、0.84、0.87 m S/cm;当脱硫石膏的施用量为45 t/hm2时,生长期和收割期的燕麦株高与对照相比分别增加了28.23%和91.00%,燕麦全株干质量和根干质量分别增加了98.33%和30.40%。因此,脱硫废渣可以明显改善苏打盐碱土的理化性质,有利于燕麦的生长。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 treatments： 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 / hm^2,respectively. Consequently,the p H value of the soda saline soil decreased by 1. 1,1. 12,1. 17 and1. 12 in treatments 1,2,3,and 4,respectively,while the p H 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 m S / cm,respectively,in comparison with a decrease in EC by0. 19 m S / cm in the control. In relation to the control,application of desulfurized gypsum at the rate of 45 t / hm^2 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 properties of the soda saline soil,resulting in a growth- promoting effect on Avena sativa.

关 键 词：碱土 燕麦 脱硫废渣 pH值 EC值 

分 类 号：S512.6[农业科学—作物学] S156.4