神东矿区活鸡兔采煤塌陷区土壤肥力特征研究  

STUDY ON SOIL FERTILITY CHARACTRISTICSOF HUOJITU EXCAVATED COAL PITS OF SHENDONG DIGGINGS

作　　者：陈士超[1] 左合君[1] 胡春元[1] 王懿霞 乔保军[1] 

机构地区：[1]内蒙古农业大学生态环境学院,呼和浩特010019 [2]呼和浩特市新城区环境保护局,呼和浩特010010

出　　处：《内蒙古农业大学学报（自然科学版）》2009年第2期115-120,共6页Journal of Inner Mongolia Agricultural University(Natural Science Edition)

基　　金：神华集团科技创新项目(SHGF-06-08)

摘　　要：开展采煤塌陷区土壤肥力研究,对土地复垦具有重要的指导意义。为了提高神东矿区采煤塌陷区土地复垦和植被恢复水平,本文在对神东矿区活鸡兔采煤塌陷区土壤机械组成、pH值、有机质、速效N、P、K含量分析的基础上,对塌陷区土壤理化特性及肥力状况进行了初步研究和探讨。结果表明:活鸡兔采煤塌陷区0 cm^90 cm土壤中有65%以上的颗粒为砂粒,而粒径小于0.05mm的粉粒和粘粒含量相对较低,土壤质地总体为砂土和壤土,其中砂土占70.4%,壤土占29.6%。土壤pH值处于7.78~8.64之间,呈微碱性。土壤有机质、速效N、速效P平均含量均处于六级水平,即"极缺",不同立地类型土壤速效钾含量差异较大。土壤机械组成粗、肥力贫乏是塌陷区土壤的共同特征。It has important directive significance to land reclamation that developing soil fertility studies of excavated coal pits. For improving land and vegetation reclamation level of excavated coal pits of Shendong diggings , soil physical and chemical characteristics were studied primarily and discussed by analysis of soil mechanical components , pH value , organic matter, available nitrogen （ N）, phosphorus （P） and potassium （K） of Huojitu excavated coal pits of Shendong diggings. The results showed that more than 65% particles are sand in 0 -90cm soil, the content of less than 0.05mm silt and clay particles are relatively lower. Soil textures were sand and loam with 70.4% and 29.6%, respectively. The pH value ranged from 7.78 to 8.64, which meant alkali soil. The soil organic matter and available N and P were in the sixth level, presumed ＂ extremely lack＂. Available K content of different sites type soil has great difference. Coarse mechanical composition and poor fertility are common feature in excavated coal pits soil.

关 键 词：活鸡兔采煤塌陷区 土壤肥力 有机质 PH值 

分 类 号：S158[农业科学—土壤学]