海河平原盐碱土最近二十年的变化与生物生产  

Melioration and change of ssline soil in haihe plain of China in 20 years

作　　者：田魁祥[1] 李惠英[1] 但野利秋[2] 李伟强[1] 韩淑敏[1] 

机构地区：[1]中国科学院石家庄农业现代化研究所,石家庄050021 [2]日本北海道大学

出　　处：《农业系统科学与综合研究》2001年第4期285-287,共3页System Sciemces and Comprehensive Studies In Agriculture

摘　　要：海河流域平原是华北平原的重要部分 ,历史上是有名的多灾低产地区 ,而盐碱化是重要灾害因素。近二十年 ,随着社会经济的发达 ,用水量大大增加 ,尤其是地下水的利用 ,盐碱地面积大幅度减少 ,程度减轻。但是 ,聚集在土体深层的盐分不仅影响生物产量 ,还潜伏次生盐碱化的威胁。表 1,参 3。As an important part of the North China Plain,Haihe Plain is a well-known low-yield area with frequent disasters in the history.Soil salinization used to be a major problem in the area.In this paper,we discussed melioration stages in recent 20 years and the main causes of saline soil change and indicated that both the area and salt content of saline soil have greatly decreased due to water resources overdraft and efficient usage with the economic development.However since fresh water shortage,residual saline soli will be more difficult to ameliorate.The meliorated saline soil is facing the potential crisis of secondary salinization.

关 键 词：海河平原 华北平原 水资源 盐碱地 土壤改良 发展史 生物生产 

分 类 号：S156.4[农业科学—土壤学]