Green-belt soil testing methods for porosity and the importance of porosity on soil fertility evaluation
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摘要: 为研究不同测定方法对土壤孔隙度大小及孔隙度对土壤肥力的影响,以上海辰山植物园典型绿地土壤和自然土壤为例,分析农业和林业2种检测方法对土壤孔隙度测定结果的影响;以上海世博会规划区典型土样为例,分析主要物理指标对绿地土壤评价结果的影响。结果表明:2种方法测定绿地土壤孔隙度差异明显,其中农业方法测定的总孔隙度、非毛管孔隙度均显著高于林业方法(P<0.05),但毛管孔隙度差异不显著;2种方法测定的自然土壤的孔隙度各组成差异不显著(P>0.05);林业方法更适宜绿地土壤孔隙度的检测;非毛管孔隙度比土壤容重对绿地土壤肥力影响大(P<0.01),应作为绿地土壤肥力评价的重要指标。图1表2参22Abstract: In order to discuss the influence of different testing methods for soil porosity and the importance of porosity on soil fertility. First, using typical green-belt soils and natural soils from Shanghai Chenshan Botanical Garden, two soil porosity testing methods, the agriculture method (NY) and the forestry method (LY) were compared. Then, the former Shanghai World Exposition Site was used to evaluate the influence on the fertility of green-belt soils by the main physical properties. Results for green-belt soils showed that except for capillary porosity, total porosity and non-capillary porosity with the NY method was much higher than the LY method(P<0.05). For natural soils, no porosity differences were found when comparing the two methods(P>0.05). Thus, in green-belt soils, the LY method was more suitable for testing porosities. Results of the green-belt soil fertility evaluation showed that non-capillary porosity influenced soil fertility evaluation more than soil bulk density(P<0.01). To evaluate the fertility of green-belt soils, non-capillary porosity should be applied as an important index.[Ch,1 fig. 2 tab. 22 ref.]
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Key words:
- soil science /
- green-belt soil /
- agriculture method /
- forestry method /
- non-capillary porosity /
- soil fertility
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链接本文:
https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2015.01.014
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