However, the delta soils are quickly worked. The diking in the Pink River to prevent flooding has deprived the delta’s rice fields of enriching silts they when obtained, and it's been essential to utilize chemical fertilizers. Tên gọi "Việt Nam" cũng xuất Helloện trong tác phẩm Việt Nam vong quốc https://arthurvfmuz.blogdeazar.com/31116540/not-known-details-about-việt-nam