| abstract |
The object of the present invention is to solve the problems of carbonate ions and bicarbonate ions that are harmful in the chloride-soda type saline-alkali soil with regional and local characteristics, and the content of bicarbonate ions is too high and the ion composition is out of balance, and provides a chloride- Soda type saline-alkaline soil conditioner and improvement method. The used modifier is composed of organic fertilizer and iron-magnesium material in a mass ratio of 1:0.1-0.3. The method is to calculate the amount of the modifier through a formula, and then apply it to the saline-alkali soil. The present invention changes the ion composition in the saline-alkali soil through sulfate type iron salt and magnesium salt modifier, improves the ratio of SO 4 2- / Cl- in the saline-alkali soil, reduces or eliminates carbonate ions and bicarbonate ions in the saline-alkali soil , transforming the chloride-soda-type saline-alkali soil into a chloride-sulfate-type saline-alkali soil, while reducing the harm of salinity and improving the efficiency of washing salt and alkali. |