摘要
为了研究不同原料配合比例对基质水分物理性质的影响,用压力膜法和土柱法测定了18种栽培基质的不同水吸力下的基质持水量及速效水含量,及不同处理的基质容重、总孔隙度、毛管孔隙度、毛管水上升高度、渗透速率等水分物理指标,用单因子及互作逐步回归方法分析了蛭石、河沙及锯末三种原料不同配比对以上水分指标的影响。结果表明原料的组成与配比对无土栽培基质的各项水分参数有密切的相关性,原料配比对水分参数的影响可以用回归方程的形式量化和表达。
For the purpose of studying the effects of material compostion o n the moisture physical characteristics of cultural media, 18 types of cultural me dia were measured by a pressure membrane apparatus and soil column method. The m edia moisture physical characteristics included soil moisture capacity, Reakily available water, soil bulk density, soil porosity, capillary porosity, the risin g height of capillary water, water penetrating velocity and the data were analyz ed by progressive return analysis. The results showed that there were close rela tionship between the material combinatorial proportions and the moisture physica l characteristics of cultural media. The effects of material combinatorial propo rtions on the moisture physical characteristics could be expressed by the return equation.
出处
《土壤通报》
CAS
CSCD
北大核心
2005年第2期160-164,共5页
Chinese Journal of Soil Science
基金
山东省自然科学基金资助项目
关键词
原料配比
栽培基质
持水量
速效水
容重
毛管水
渗透速率
Raw material combinatorial proportions
Cultural media
Field cap acity
Capillary water
Soil bulk density
Soil permeability
Readily available water
