The State of the Nitrate Amount and Its Relation with Potassium Amount in vegetables.
He Tianxiu et al.(Southwest Agricultural University),
By studying the nitrate amount in more than fifty kinds of vegetables and the relation between nitrate and potassium amount in part of these vegetables, it was found that nitrate amount involved in twenty main kinds of vegetables is higher than the standard values of the permited amount in food which was formulated by U.N.W.H.O. in 1973, the nitrate amount in root, leaf and stem leaf vegetable is more than that in gourd, fruit, flower and kidney bean vegetable, and the regression model between nitrate and potassium amount in the vegetables was the index curves aquation and negative correlation coefficient reached very significant level.