NYT 497-2002 肥料效应鉴定田间试验技术规程
冬季温室大棚管理技术
Determination of pH of Soils by Different Methods
PH值与氢离子浓度的关系
Recommended Soil pH and Lime Requirement Tests
SOIL AND WASTE pH
Soil pH and Buffer Index
TEST METHOD FOR THE DETERMINATION OF pH VALUE OF WATER OR SOIL
Handbook of Soil analyze1
GB 6920-86 水质 pH的测定
