燃煤烟气脱硫废弃物施用对碱化土壤种植甜高粱的影响  

Effects of coal-fired flue gas desulfurated waste residue application on sweet sorghum cultivation on alkali soil

作　　者：王彬[1] 肖国举[2] 杨涓[3] 郑国琦[3] 许兴[1] 

机构地区：[1]宁夏大学农学院,宁夏银川750021 [2]宁夏大学新技术应用研究开发中心,宁夏银川750021 [3]宁夏大学生命科学学院,宁夏银川750021

出　　处：《干旱地区农业研究》2010年第6期206-211,共6页Agricultural Research in the Arid Areas

基　　金：国家科技支撑计划项目(2007BAC08B01)

摘　　要：采用大田和盆栽相结合的试验方法,研究了燃煤烟气脱硫废弃物(简称脱硫废弃物)施用后对碱化土壤种植甜高粱〔Soughumbicolor(L.)Moench var.succharafumkonern〕的影响。试验地选在宁夏平罗西大滩碱化土壤上,设置5种不同脱硫废弃物施用量:0、4.50、9.00、13.50 t/hm2和18.00 t/hm2,分别于脱硫废弃物施用前后测定了土壤容重、pH值、全盐含量以及在甜高粱的生长季内测定了其出苗率、净光合速率、成熟期株高和生物量。试验数据显示,脱硫废弃物施用后,碱化土壤的容重、pH值以及全盐含量均呈下降趋势;甜高粱的出苗率、净光合速率、成熟期株高及生物产量均呈上升趋势。研究结果表明,在碱化土壤中施用脱硫废弃物能显著改善土壤的理化性质,促进甜高粱的生长发育,但改良效果并不与脱硫废弃物的施用量呈正比,而是以4.50 t/hm2的施用量效果为最佳。The purpose of this study was to explore the effects of coal-fired flue desulfurated waste residue（Hereinafter abbreviated as desulfurated waste residue） application on sweet sorghum（Soughum bicolor（L.）Moench var.succharafum konern） cultivation on alkali soil.Based on field and pot experiments,we studied soil properties,including bulk density,pH,total salt content,and plant eco-physiological traits,including germination rate,net photosynthetic rate,plant height and biomass yield.The field experiment was carried out on alkali soil of Xidatan,Pingluo of Ningxia,and the desulfurated waste residue was added at the ratio of 0,4.50,9.00,13.50,18.00 t/hm^2,respectively.The results showed that,with the application of desulfurated waste residue in alkali soil,soil bulk density,pH,total salt content all decreased greatly,while germination rate,net photosynthetic rate,plant height and biomass yield of sweet sorghum displayed an opposite trend.Our findings indicated that the application of desulfurated waste residue could ameliorate alkali soil markedly and enhance the growth of sweet sorghum on such soil.But the amelioration effects were not in linear relation with the amount of desulfurated waste residue,and the 4.50 t/hm^2 treatment achieved the best amelioration effect.

关 键 词：燃煤烟气脱硫废弃物 碱化土壤 土壤改良 甜高粱 

分 类 号：S156.4[农业科学—土壤学]