1, Ịgba mmiri n'ubi ego ego nke 30 ~ 50%
Site n'ịkwado ala, a na-abawanye nha nha mmiri, na-ebelata ala na mmiri, na-eme ka ọrụ mmiri na-arụ ọrụ nke ọma dịkwuo mma, na-ebelata ego mmiri.
2, Fatịlaịza itinye n'ọrụ ọnụego na-abawanye site n'elu 20%
Mgbe emechara ala, a na-edobe fatịlaịza etinyere nke ọma na mgbọrọgwụ nke ihe ọkụkụ, na-eme ka ojiji fatịlaịza na-ebelata ma belata mmetọ gburugburu ebe obibi.
3, ihe ubi mkpụrụ na-abawanye site 20 ~ 30%
Nhazi ala dị elu dị elu na-abawanye mkpụrụ site na 20 ~ 30% ma e jiri ya tụnyere nkà na ụzụ omenala, yana site na 50% ma e jiri ya tụnyere ala a na-enweghị ihe ọ bụla.
4, Ala leveling arụmọrụ mma site n'elu 30%
Sistemu na-ejikwa akpaghị aka n'obere ala a kpochapuru n'oge a na-ebuli elu, na-ebelata oge ọrụ nhazi ala ka ọ dịkarịa ala.
Chọpụta ebe azịza anyị nwere ike iburu gị.