Ihe ubi n'ahịrị bụ ihe ọkụkụ nke enwere ike ịkụ n'ahịrị sara mbara nke ga-ekwe ka a rụọ ya ma ọ bụ na-akụ ya n'ụzọ ọzọ site na ígwè ọrụ ugbo, ígwè ọrụ ahaziri maka ọrụ oge nke ihe ọkụkụ.[1]. A na-akụ ihe ubi ndị dị otú ahụ site na mkpọpu ma ọ bụ ịkwagharị kama ịgbasa ozi. A na-akụkarị ha n'ubi ugbo ahịa (ụgbọ ala ugbo) ma ọ bụ n'ubi kichin. Ihe ọkụkụ na-eto eto malitere na China oge ochie na narị afọ nke isii BC.[1]

Ọdịiche a dị ịrịba ama na atụmatụ ntụgharị ihe ọkụkụ, ebe a na-akụ ala n'ahịrị ahịhịa, ọka nri ngwa ahịa, na ihe ọkụkụ na-akpụ sod n'usoro iji chebe ịdịmma nke ala ma na-ebuli elu ala na-arụpụta kwa afọ.

Ihe fọrọ nke nta ka ọ bụrụ pasent 20 nke ihe ọkụkụ n'ụwa nile ka a na-agba mmiri, ebe ụfọdụ ihe ọkụkụ dị ka osikapa na ọka na-erite uru site na mmiri ọzọ.[4] N'oge a na-eto eto, a na-adọba oghere dị n'etiti ahịrị ugboro abụọ ma ọ bụ anọ ma na-akụ ahịrị ndị ahụ iji chekwaa mmiri ma melite ikuku. N'ihi ya, ọrụ microbiological nke ala na-abawanye ma na-achịkọta ihe ndị na-edozi ahụ na-esiwanye ike. Ihe ubi n'ahịrị bụ ihe mmalite bara uru nke mkpụrụ ọka, flax, na hemp. Mmetụta bara uru nke ihe ọkụkụ n'ahịrị na-agbatị ruo ihe ọkụkụ nke abụọ.

Ihe atụ nke ihe ọkụkụ na-agụnye sunflower, poteto, canola, akị, field pea, flax, safflower, buckwheat, ogho, ọka, soybeans, na sugar beets.

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  1. Bray (1978). "Swords into Plowshares: A Study of Agricultural Technology and Society in Early China". Technology and Culture 19 (1): 1–31. DOI:10.2307/3103306. ISSN 1097-3729.