宁夏引黄灌区果树设施栽培土壤肥力特征及空间变异  

Characteristics and Spatial Variability of Soil Fertility in Greenhouse Fruit Tree Cultivation Filed in Irrigated Area of Ningxia

作　　者：孙权[1] 张亚红[1] 李建设[1] 于晶[1] 张学英[1] 曹庆杰[1] 沙海宁[1] 王丽[1] 王淑珍[1] 

机构地区：[1]宁夏大学农学院,宁夏银川750021

出　　处：《北方园艺》2009年第12期146-149,共4页Northern Horticulture

基　　金：国家"十一五"科技支撑计划资助项目(2007BAD57B05)

摘　　要：调查研究了宁夏果树设施栽培土壤的物理和化学性状,并用传统统计方法分析了不同肥力因子的变异特征。结果表明:设施果树栽培土壤的容重增大10%以上,总孔隙度小于正常水平;灌淤土养分状况良好,有机质及速效氮、磷、钾含量均较高,尤其是速效磷在土壤中的积累较多;6个主要肥力指标的变异系数大小顺序为:碱解氮>速效磷>速效钾>全盐>有机质>pH值;为了增强测土配方施肥的精确性,土壤pH值、有机质、全盐和速效钾的采样数量可适当减少,而速效氮、磷的采样数量应增加。Soil basic physical and chemical properties and their vrariability under greenhouse fruit tree cultivation condition were studied by means of indoor analysis and traditional statistical methid. The result showed that soil bulk density was increased more than 10%, yet total porosity was lowered than normal level. Tested soil has higher content of organic matter, nitrogen, phosphorous and potasium. Much more phosphorous was accumulated in the soil. The variable sequence of them were： available N〉available P〉 available K〉total salt〉organic matter〉 pH. Hereby, soil pH, organic matter, total salt, available K can sample less, but available N and P should sample more inorder to increase the accuracy of soil survey and fertilization.

关 键 词：设施果树 土壤肥力 变异系数 

分 类 号：S628[农业科学—园艺学]