High-iron-chelate fertilizer for saline-alkali soil and application thereof in Quercus virginiana planting

Abstract

The invention provides a high-iron-chelate fertilizer for saline-alkali soil, which is composed of the following components in parts by mass: 45-50 parts of maleic anhydride, 20-22 parts of citric acid, 1-2 parts of sulfuric acid, 5-7 parts of amino acid salt, 13-15 parts of biochemical fulvic acid, 10-12 parts of humic acid, 2-5 parts of trace fertilizer, 5-6 parts of sodium ion adsorbent, 20-30 parts of potassium dihydrogen phosphate, 4-8 parts of ethylenediamine, 0.1-0.2 parts of lauroyl ethylene glycol amine, 0.1-0.3 part of salicylic acid and 40-50 parts of water. The invention also provides application of the fertilizer in Quercus virginiana planting. The fertilizer lowers the salinity of the soil to 2.1-2.3%, enhances the humus content of the soil by 25-30%, enhances the total nitrogen content of the soil by 21.2-21.6%, and increases the effective phosphorus content in the 0-20cm soil to 37.5-37.8 mg / kg.

Description

technical field [0001] The invention provides a fertilizer and its application in the cultivation of Quercus Virginia, in particular to a high-chelated iron fertilizer in saline-alkali land and its application in the cultivation of Quercus Virginia, belonging to the technical field of soil fertilizers. Background technique [0002] There are too many soluble salts in the saline-alkali soil, which increases the osmotic pressure of the soil solution and causes plant physiological drought; some salt ions directly poison the plant root system, causing an imbalance in the ratio of nutrients absorbed by the plant; soil colloids in alkaline soil contain a large amount of exchange. Sodium increases the alkalinity of the soil and deteriorates the physical and chemical properties of the soil. When the soil is wet, it swells and becomes muddy, and when it is dry, it shrinks and becomes hard, and its permeability and cultivability are extremely poor. [0003] Applying improved fertilize...

AI Technical Summary

Problems solved by technology

[0002] There are too many soluble salts in the saline-alkali soil, which increases the osmotic pressure of the soil solution and causes plant physiological drought; some salt ions directly poison the plant root system, causing an imbalance in the ratio of nutrients absorbed by the plant; soil colloids in alkaline soil contain a large amount of exchange. Sodium increases soil alkalinity and deteriorates soil physical and chemical properties. The soil swells and becomes muddy when wet, shrinks and hard when dry, and has poor permeability and cultivability.

[0003] Applying improved fertilizers to saline-alkali land is a means of improving saline-alkali land. The shortcomings of existing improved fertilizers in improving saline-alkali land are: (1) insufficient ability to reduce soil salinity; (3) When the plants are planted in the improved saline-alkali soil, the transplanting survival rate is not high, and the biomass of branches and leaves is small

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