Nutrient content of farmland soil in Shanghai suburb was studied in the paper.The result show that in the past about 20 years' succession cultivation from 1980s

nitrogen and phosphorus nutrient of dry farmland soil in Shanghai suburbs increased greatly with fertilization increase.Employing too much fertilizer causes waste and increases dry farmland N

P potential losses possibility.Nitrate content in vegetable of greenhouse cultivation is significantly higher than that of soil open in air.The effects of different cropping systems on content of nitric nitrogen in soils and vegetable were studied.Soil nutrient level of different cultivation mode from high to low in turn is: greenhouse vegetable

melon and fruit soil

open vegetable soil

traditional vegetable soil

rice and wheat dry farmland.The results indicated that

there is more Olsen-P in vegetable soils than in paddy soil.It depends on fertilization level.