As regards fertility status, almost all soils are deficient in N and about 90% are low to medium in P.
As regards fertility status, almost all soils are deficient in N and about 90% are low to medium in P.
至于肥力状况，几乎所有土壤缺氮，约90%土壤低磷或中磷。
As regards fertility status, almost all soils are deficient in N and about 90% are low to medium in P.
至于肥力状况，几乎所有土壤缺氮，约90%土壤低磷或中磷。