天然矿物改良剂在微咸水灌溉土壤中应用效果的研究  

Study of Effect on Using Natural Minerals to Improve Soil in Irrigating Brackish Water

作　　者：邵玉翠[1] 张余良[1] 李悦[2] 严晔端[2] 安玉钗 

机构地区：[1]天津市土壤肥料研究所,天津300192 [2]天津市水利科学研究所,天津300061

出　　处：《水土保持学报》2005年第4期100-103,共4页Journal of Soil and Water Conservation

基　　金：天津市重大科技发展计划项目(993121711)

摘　　要：利用10种不同天然矿物作为土壤改良剂,对矿化度4～5 g/L的微咸水灌溉农田土壤进行改良效果试验.结果表明:改良剂1能够降低土壤容重12.23%,提高土壤孔隙度12.28%.参试的改良剂均能够降低0～5 cm土壤全盐量,最大降幅为72.5%,并能降低0～40 cm土壤中CO 32-和HCO 3-离子,最大降幅达100%,改良剂4能够增加土壤中的Ca2+ 、Mg2+离子、降低土壤中的K++Na+离子.天然矿物土壤改良剂能够有效地改善土壤物理和化学环境.Using 10 types of natural minerals as amendment agents of soil, we experiment of improving soil by irrigating mineralize degrees 4.0- 5.0 g/L brackish water to farmland . The results show that the first amendment agent can reducesoil unit weight 12.23%, increase soil porosity 12.28%. Amendment agents take part in a experiment can reduce soil salt content at most to 72.5% in soil depth of 0-5 cm and reduce soil anion COa^2- and HCO3^- at most to 100%. The fourth amendment agent has affects of increasing Ca^2＋ ,Mg^2＋ and reducing K^＋＋Na^＋ in soil depth of 0-40cm. Natura minerals amendment agents of soil have taken a turn for better physical and chemistry environment of soil.

关 键 词：天然矿物质 改良剂 微咸水 土壤全盐量 

分 类 号：S156.2[农业科学—土壤学] S275.3[农业科学—农业基础科学]