辽宁省彰武地区不同利用方式风沙土的养分特征  

Nutrient Characteristics of Sandy Soils under Different Utilization in Zhangwu Area, Liaoning Province

作　　者：那波[1] 刘扬[1] 梁强[1] 贾树海[1] 

机构地区：[1]沈阳农业大学土地与环境学院,辽宁沈阳110161

出　　处：《中国农学通报》2006年第3期245-248,共4页Chinese Agricultural Science Bulletin

基　　金：辽宁省国土资源厅"十五"科研攻关项目"辽宁省北部西部地区土地沙漠侵蚀耕地规律调查与沙地治理研究项目实施方案"之子课题"辽西北风蚀荒漠化对耕地质量的影响及其程度评价"。

摘　　要：通过对采自彰武县林地、耕地、草地利用方式下195个不同沙化程度的土壤样品进行理化性质的分析,得出以下结论,彰武县地区沙化普遍较重,表现出养分贫瘠化,土壤粗粒化。随着沙化程度的加重,土壤肥力降低。利用方式不同,风沙土的理化性质也不同,导致沙化程度也不同,具体利用方式沙化程度为耕地、林地、草地依次降低,说明耕地受着人为因素的严重影响,增加了土壤细颗粒含量,且大量施肥,使耕地土壤肥力有了较大的提高,其中磷素含量增加的较为显著。In this paper, soil physical and chemical characters of 195 kinds of sandy soils under different utilization sampled from Zhangwu County were studied. The results showed that Zhangwu County area generatly desertified generally and heavily, displaying the nutrient to be barren and soil particle to be large. The heavier the degree of desertification led to the lower soil fertility. Different land use pattern and different physical and chemical characters caused different the degree of desertification. The degree of desertification was farmland 〉woodland 〉grassland. Human factors seriously influenced farmland and the content of fine grains in farmland increased. The soil fertility of farmland greatly improved by fertilization and the content of phosphorus increased remarkably.

关 键 词：沙漠化 利用方式 理化性质 彰武县 

分 类 号：S158.3[农业科学—土壤学] S158[农业科学—农业基础科学]