Lime requirment Lime requirment= Soil volume X bulk density XcEC (1-base saturation) Affect the factors of lime applied (1) Soil potential acidity and ph value content of organic matter. base saturation and soil texture etc (2) Adaptability of the plant to acid-alkal (3) Lime types and applying methodsLime requirment = Soil volume ×bulk density ×CEC (1- base saturation) Lime requirment Affect the factors of lime applied： （1）Soil potential acidity and pH value, content of organic matter, base saturation and soil texture etc. （2） Adaptability of the plant to acid-alkali （3）Lime types and applying methods