摘要
通过田间试验,研究了石膏、风化煤和微生物菌剂3种改良剂对苏北滩涂盐碱地土壤盐分、养分以及作物的影响。结果表明,在表施条件下,改良剂主要作用范围为0～20cm土层;3种改良剂均能在一定程度上改善土壤性质,降低土壤盐分、pH和有害离子(主要是Cl-和Na+),提高土壤肥力和促进玉米生长。相对对照而言,石膏处理条件下,表层0～20cm土壤总盐、Cl-和Na+分别降低了37.5%、55.4%和172.8%,玉米产量增加了91.3%;风化煤分别降低了34.5%、14.0%和129.5%,产量增加了43.0%;微生物菌剂分别降低了24.0%、34.7%和16.4%,产量增加了15.4%。
For studying the effects of different amendments on soil salinity,nutrient and crop growth,experiments were carried out in the saline-alkali coastal field located in North Jiangsu,gypsum,weathered coal and microorganism agents were added in the top soil of the experimental plot（0 to 20 cm） before tillage.Results showed that all the amendments had the property to improve soil properties,decrease soil salinity,pH and baleful ions（especially Na＋ and Cl-）,increase N,P and organic matter content,and promote crop growth to an extent.In the 0 to 20 cm soil layer,the soil salinity content,Na＋ and Cl-in the plot applied with gypsum,weathered coal and microorganism agents reduced by 37.5%,55.4% and 172.8%,34.5%,14.0% and 129.5%,and 24.0%,34.7% and 16.4% compared to the CK,and the yield increased by 91.3%,43.0% and 15.4% respectively.
出处
《灌溉排水学报》
CSCD
北大核心
2012年第3期21-25,共5页
Journal of Irrigation and Drainage
基金
公益性行业(农业)科研专项经费项目(200903001)
国家自然科学基金项目(41101199)
江苏省自然科学基金项目(BK2011425
BK2011883)
关键词
滩涂盐碱地
改良剂
石膏
风化煤
微生物菌剂
coastal saline-alkali area
amendments
gypsum
weathered coal
microorganism agents
