 |
 |
 |
 |
 |
|
|---|---|---|---|---|---|
| 1 | soil layer | 土層 | |||
| 2 | clay layer | 粘土層 | |||
| 3 | cover soil layer | 覆土層 | |||
| 4 | humus soil | 腐食土層 | |||
| 5 | permafrost layer | 永久凍土層 | |||
| 6 | protective layer of soil | 保護土層 | |||
| 7 | soil profile | 土層断面 | |||
| 8 | subsoil improvement by deep tillage | 深耕土層改良 | |||
|
|
|
|
|
|
|---|---|---|---|---|---|
| 1 | soil layer | 土層 | |||
| 2 | clay layer | 粘土層 | |||
| 3 | cover soil layer | 覆土層 | |||
| 4 | humus soil | 腐食土層 | |||
| 5 | permafrost layer | 永久凍土層 | |||
| 6 | protective layer of soil | 保護土層 | |||
| 7 | soil profile | 土層断面 | |||
| 8 | subsoil improvement by deep tillage | 深耕土層改良 | |||
