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| contour ploughing; contour cropping; contouring | |||
| contour farming | |||
| contour farming The performing of cultivations along lines connecting points of equal elevation so reducing the loss of top soil by erosion, increasing the capacity of the soil to retain water and reducing the pollution of water by soil (沿着相同海拔高度的点连线耕作，这样可以降低表层土壤的侵蚀，提高土壤的保水能力，同时降低土壤造成的水体污染。) | |||
| contour tillage; contour plowing; contour cultivation; contour fanning | |||
| terracing | |||
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| contour tillage | |||
| 等 高 耕作: 6 phrases in 3 subjects |
| Agriculture | 4 |
| Desert science | 1 |
| Hydraulics | 1 |
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