土壌改良

1. Origins, structure, and basic meaning

• Structure: 土壌改良 (どじょうかいりょう) is a compound action noun for changing soil properties to make land more suitable for cultivation.
• Basic usage: 土壌改良を行う names work carried out in a clay field, while 土壌改良の方法 makes a compost-based method the subject of learning.

2. Common pitfalls and similar expressions

• The operation and a method for it
  • 土壌改良 and 土壌改良の方法 have different scopes. In the latter, using compost is one method of improvement, not an inherent component of the term 土壌改良.