盐渍化地区土地整理过程中的土壤改良  

Soil Improvement in Land Consolidation in Salinization Area

作　　者：张清敏[1] 刘峻岭[2] 李洪远[1] 孟伟庆[3] 

机构地区：[1]南开大学环境科学与工程学院,天津300071 [2]天津市开垦征地事务中心,天津300221 [3]天津师范大学城市与环境科学学院,天津300387

出　　处：《水土保持通报》2014年第2期224-229,共6页Bulletin of Soil and Water Conservation

基　　金：国土资源部公益性行业科研专项"北方地区村庄土地复垦整理关键技术研究与示范"(201111015)

摘　　要：针对盐渍化地区土地整理实践中土壤盐分含量高,养分含量少的特点,考虑隔盐材料(A)、隔盐层深度(B)和改良剂(C)三个因素,设计3因素3水平正交方案,对土壤进行改良试验,以便筛选出较好的改良方案。研究结果表明,经过改良后土壤容重、pH值和含盐量下降明显,有效氮、有效磷、有机质的含量均呈上升趋势,有效钾含量略有下降;与对照组相比,土壤理化性质、主要养分含量明显改善,作物生物量和产量显著提高,且各指标均差异显著。经过综合平衡,确定A2B2C1为最佳改良方案,其中隔盐材料选取炉渣和玉米秸秆,隔盐层深度为60cm,改良剂为有机肥。According to the consolidation practice and the special characteristics of land in the saline area with high soil salt content and less nutrient content,this article selected salt separating material（A）,the depth of the salt separating layer（B）and ameliorants（C）as factors to design a 3factors by 3level orthogonal variance experiment.The results showed that after soil improvement,the soil bulk density,pH value and salt content decreased significantly,and the content of available nitrogen,phosphorus and organic matter increased but a slight decline in available potassium.Compared with the control group,the soil properties,main nutrients, crop biomass and yield of the test groups were significantly improved,and the indicators were significantly different.The best improvement program is A2B2C1,in which the slag and straw are selected as the salt separating material,and the depth of the salt separation is 60cm and organic fertilizer can be used as ameliorants.

关 键 词：土壤改良 土地整理 盐渍化地区 正交试验 

分 类 号：S156.2[农业科学—土壤学]