![StudiesshowfarmlandinAfricaisoftenlackinginimportantnut...]( "StudiesshowfarmlandinAfricaisoftenlackinginimportantnut...")
- 問題詳情：StudiesshowfarmlandinAfricaisoftenlackinginimportantnutrients.Butresearcherssaycombiningdifferentfarmingmethodsmayhelp. Sincetheworldfoodcrisisseveralyearsago,researchershavedirectedmoreoftheirattentiontosmallfarms.Mostfarmsinareassoutho...
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