surface tillage
... soil tillage 土壤耕作,土壤耕地... surface tillage 表土耕作 subsurface tillage 次表土耕作法...
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... 保护性耕作 conservation tillage 表土耕作 surface cultivation 常规耕作 conventional tillage ...
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次表土耕作法 [农学] subsurface tillage
表土耕作措施 surface tillage
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格莱斯说：“大家都听说过这严酷的说法：珍贵的表土因过度耕作肥力降低，亚洲上空尘云遮蔽，焦干的土地荒漠化，河流行将干涸。”
"We've all heard the stark anecdotes: precious topsoil weakened by over-farming, dust clouds darkening the Asian skies, parched land becoming desert and rivers running dry, " said Mr Grice.
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