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.
出处
《生态学杂志》
CAS
CSCD
北大核心
1994年第3期35-40,共6页
Chinese Journal of Ecology
关键词
土壤
生态环境
旱田
水田
营口市
soil eco-environment,dry land-paddy soil shifting,geological structure.
