营口市柳树镇旱改水与土壤生态环境演变研究  

Dry Land-Paddy Soil Shifting and Eco-Environmental Evolution of Soil at Liushu Town of Yingkou City.

作　　者：赵羿[1] 吴彦明[1] 

机构地区：[1]中国科学院沈阳应用生态研究所

出　　处：《生态学杂志》1994年第3期35-40,共6页Chinese Journal of Ecology

摘　　要：营口市柳树镇旱改水与土壤生态环境演变研究赵羿，吴彦明（中国科学院沈阳应用生态研究所１１００１５）ＤｒｙＬａｎｄ－ＰａｄｄｙＳｏｉｌＳｈｉｆｔｉｎｇａｎｄＥｃｏ－ＥｎｖｉｒｏｎｍｅｎｔａｌＥｖｏｌｕｔｉｏｎｏｆＳｏｉｌａｔＬｉｕｓｈｕＴｏｗｎｏｆＹｉｎ...Liushu town is situated at the lower reach of Liaohe Rlver and was seriously affected by salt and flooding calamities,After the shifting from upland to paddy soil cultivation,the salt content of soil haa been greatly reduced by leaching of irrigation water.Sampling analysis indicates that 5450kg· ha ￣1 of salt is discharged from surface soil annually, which will reduce the salt content of saline meadow soil by 0.1─0.2%within 2─4 vears. Salt composition is also changed from NaCl type to sulphate mixed type. The cl and Na content has been greatly reduced.and soil properties have been improved,which provide a reliable garantee for the progressively high and stable yield of crops.

关 键 词：土壤 生态环境 旱田 水田 营口市 

分 类 号：S154.1[农业科学—土壤学]