再生水灌溉对不同类型草坪土壤盐碱化的影响  

Effects of Turf-grass Irrigation with Reclaimed Water on Soil Salinize-alkalization

作　　者：郑伟[1] 李晓娜[2] 杨志新[1] 张雪莲[2] 刘尚义[2] 

机构地区：[1]河北农业大学资源与环境科学学院,河北保定071000 [2]北京草业与环境研究发展中心,北京100097

出　　处：《水土保持学报》2009年第4期101-104,122,共5页Journal of Soil and Water Conservation

基　　金：国家"863计划"项目(2006AA100205-01);北京市科技计划项目(D0706007040291-08)

摘　　要：通过小区试验研究了再生水(Reclaimed Water,Recycled Water)灌溉两年高羊茅(Festuca arundinacea)和早熟禾(Poa pratensis)对土壤盐分累计分布规律的影响。结果表明:(1)与清水灌溉相比,再生水灌溉对高羊茅土壤全盐量、钠离子含量、SAR值的影响未达到显著水平(P>0.05),对早熟禾土壤的影响达到显著水平(P<0.05);(2)随着土层深度的增加,高羊茅土壤全盐量、钠离子含量、SAR值呈现增大的趋势,早熟禾土壤差异不显著。(3)短期再生水灌溉两种草坪土壤虽未达到盐害水平,但均表现出一定的盐分积累现象,说明再生水多年连续灌溉土壤有潜在盐化危险。且再生水灌溉后高羊茅的土壤钠离子含量和钠吸附比均小于早熟禾,初步说明高羊茅更适宜再生水灌溉。In this paper, the effects of reclaimed water irrigation in two years on soil salinize-alkalization of Tall rescue （Festuca arundinacea） and Kentucky Bluegrass （Poa pratensis） were studied through plot experiment. The results showed that there were no significant effect （P〉0.05） in the Tall fescue soil irrigated with reclaimed water of the content of total salt, soil Na^＋ and SAR, but the content in the Kentucky Bluegrass soil（P〈0.05）. With the depth of soil increased, the content of total salt, soil Na^＋ and SAR in the Tall fescue soil showed increscent trend, but the content was not significant effect in the Kentucky Bluegrass soil. Short-term irrigation with reclaimed water on turf-grass will not make soil salinize-alkalization, but the effect of reclaimed water irrigation on soil secondary salinization and sodicilization would be significant for long time. The content of soil Na^＋ and SAR in the Tall rescue soil was less than it in the Kentucky Bluegrass soil in the range of root growth soil, so Tall fescue was more adapt to be irrigated by reclaimed water than Kentucky Bluegrass.

关 键 词：再生水 灌溉 草坪 土壤盐分 

分 类 号：S153.6[农业科学—土壤学] S273.5[农业科学—农业基础科学]