Earth and Water
In Vietnamese, you refer to the land of Vietnam as "Dat nuoc Viet Nam", litterally "Vietnam's Land and Water", which does evoke the major role that the river and its delta play in everyday life. 
Fantastic Mekong
The Delta shows varied landscapes: from rice fields to shaded coconut tree woods, to mangrove, to orchards, interspersed with timeless villages with their handicraft and even traditional industries of fruit drying, sugar cane processing, brick cooking... 
Natural extension of the Mekong basin, the Delta is essentially made of the silt drained by the river. The Mekong may carry up to a few kilograms of dry earth per cubic meter of water during the periods of high waters, that go and fertilize the whole delat area. 
The flow of the Mekong inverts back all the way up to Cambodia with the tide, hinting at a very flat slope. One may thus figure out the formidable volume of water in the Mekong, whose peak flow reaches 150,000 tons of water per second. 
The evaporation of the river and flooded areas, as well as the lush vegetation, have a noticeable effect on the climate of the Delta, which is especially nice. The temperature in the Delta is always a few degrees less than in Ho Chi Minh city, although the city is very near.

Vietnam's rice basket
The Mekong Delta is the most ecologically productive land in Vietnam. ( Vietnam Tours Package ) 
Half of the rice of the country is produced in the Delta in three crops per year, as well as hundreds of thousands of tons of catfish, sugar cane, fruit and vegetables. 
This formidable production -Vietnam is the second largest rice exporter in the world- is still today mainly made by hand, according to traditional techniques. 
Life in the delta is still rhythmed by nature.