Abstract: Field experiments were conducted to study the effect of Monosodium Glutamate Organic Compound Fertilizer on planting cucumber.The yield and quality of cucumber and the content of free amino acid and microbe-carbon in soil were analyzed.Results showed that the mix application of chemicals and monosodium glutamate organic fertilizers increased the cucumber yield and improved the soil quality in available N、P、K,free amino acid and biologic-carbon.Compared with chemical fertilizer,mixed compound fertilizers increased the cucumber yield about 2.5%-7.9% and improved its qualities in the contents of Vc,soluble sugar and biologic-carbon for about 4.9%-19.6%,6.7%-25.5% and 26.7%-59.5%,respectively.Concomitantly,the nitrate content of the cucumber was decreased for 0.4%-12.8%.Total carbon content of microbial biomass correlated to the organic nitrogen applied to soil with monosodium glutamate fertilizer was fitted well with one dimensional linear equation.

Key words: monosodium glutamate, cucumber, yield, quality, biologic-carbon in soil microbes, free amino acid