Effects of Spraying Ferrous Sulfate on Yield and Nitrate Content of Greengrocery

Took qreenqrocery as material,by using the pot experiment,sprayed with different concentrations of ferrous sulfate to study the Fe fertilizer on greengrocery's biomass and nitrate concent.Results showed,the yield of greengrocery was increased significently and nitrate content decreased significantly with the increasing of spraying ferrous sulfate concentration.If ferrous sulfate concentration was too high the yield would be reduced and the nitrate content would be increased.