%0 Journal Article
%T 许昌市不同土地利用方式对土壤速效养分的影响
Characters on Available Nutrients of Soils under Different Land Use Types in Xuchang
%A 范晓红
%J Open Journal of Soil and Water Conservation
%P 65-74
%@ 2334-3435
%D 2015
%I Hans Publishing
%R 10.12677/OJSWC.2015.34009
%X
本文选取许昌市菜地、果园、耕地、苗圃、林地和城市绿地6种土地利用类型为研究对象，通过野外采样和室内分析对不同土地利用类型表层土壤(0~10 cm)的基本理化性质和速效养分特征进行了分析。结果表明：1) 土壤容重变幅为0.9~1.82 g/cm3；城市绿地 > 林地 > 苗圃 > 菜地 > 果园 > 耕地。2) 土壤pH值变幅为7.21~8.49，均值7.93，属碱性；菜地 > 果园 > 耕地 > 苗圃 > 林地 > 城市绿地。3) 土壤速效氮变幅12.55~47.48 mg/kg，均值为26.01 mg/kg，属于土壤养分分级6级水平；耕地 > 菜地 > 果园 > 林地 > 苗圃 > 城市绿地。4) 土壤速效磷含量变幅为11.54~78.86 mg/kg，均值26.71 mg/kg，属于土壤养分分级2级水平，呈现出富磷特征；城市绿地 > 果园 > 苗圃 > 菜地 > 林地 > 耕地。5) 土壤速效钾含量变幅在129.5~295.3 mg/kg之间，均值234.59 mg/kg，属于土壤养分分级1级水平；耕地 > 苗圃 > 菜地 > 果园 > 林地 > 城市绿地。<br/>On the basis of field sampling and laboratory experiment, the basic physicochemical properties and the available nutrients of surface soils (0 - 10 cm) were analyzed between six land use types (vegetable field, orchard, cultivated land, nursery, forest land and urban green space) in Xuchang city. The e results showed that: 1) the soil bulk density was in the range of 0.9 - 1.82 g/cm3 and followed the order of urban green land > forest land > nursery > vegetable plots > orchard > culti-vated land. 2) The value of pH was in the range of 7.21 - 8.49, with the mean of 7.93, which inda-cated the alkaline feature. The order of pH was vegetable field > orchard > cultivated land > nur-sery > forest land > urban green space. 3) The content of soil available nitrogen ranged between 12.55 to 47.48 mg/kg, with the mean of 26.01 mg/kg and the level was the sixth. The order of available nitrogen was cultivated land > vegetable field > orchard > forestland > nursery > urban green space. 4) The content of soil available phosphorus was in the range of 11.54 - 11.54 mg/kg, with the mean of 26.71 mg/kg and the level was the second, indicating a highly rich in the phos-phorus. The soil available phosphorus followed the order: urban green space > orchard > nursery > vegetable field > forestland > cultivated land. 5) The soil available potassium content ranged be-tween 129.5 to 295.3 mg/kg, with the mean of 234.59 mg/kg and the level. The order of soil avail-able potassium was cultivated land > nursery > vegetable field > orchard > woodland > urban green space.
%K 土壤速效养分，土地利用方式，表层土壤，许昌市
Soil Available Nutrients
%K Land Use Types
%K Surface Soil
%K Xuchang City
%U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=16652