绿地土壤孔隙度检测方法及其对土壤肥力评价的重要性  

Green-belt soil testing methods for porosity and the importance of porosity on soil fertility evaluation

作　　者：伍海兵[1] 李爱平[2] 方海兰[1] 郝冠军[1] 

机构地区：[1]上海市园林科学研究所,上海200232 [2]南京农业大学资源与环境科学学院,江苏南京210095

出　　处：《浙江农林大学学报》2015年第1期98-103,共6页Journal of Zhejiang A&F University

基　　金：上海辰山植物园专项基金资助项目(G102402)

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。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-beh 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-beh 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.

关 键 词：土壤学 绿地土壤 农业方法 林业方法 非毛管孔隙度 土壤肥力 

分 类 号：S151.9[农业科学—土壤学] S714.2[农业科学—农业基础科学]