关键词 第3章 土壤空气( soil air0j土壤通透性(soil permeability) 土壤水 oil water))土水势( soil water potentia 土壤酸度( soil acidity)土壤胶体 (soil colloid 土壤温度状况( oil temperature regime) 土壤水分状况( Di water regime 土壤肥力因子( soil fertility factor 土壤生态系统功能 function of soil ecosystem) PdfcreatedwithpdffactORyProtrialversionwww.pdffactory.com3 关键词 土壤空气(soil air) 土壤通透性(soil permeability) 土壤水(soil water) 土水势(soil water potential) 土壤酸度(soil acidity) 土壤胶体(soil colloid) 土壤温度状况(soil temperature regime) 土壤水分状况(soil water regime) 土壤肥力因子(soil fertility factor) 土壤生态系统功能(function of soil ecosystem) PDF created with pdfFactory Pro trial version www.pdffactory.com