Special fertilizer containing medium-and-trace element chelate liquid for saline-alkaline land and preparation method thereof

Abstract

The invention relates to a special fertilizer containing medium-and-trace element chelate liquid for saline-alkaline land. The special fertilizer comprises, by weight, 6 to 10 parts of ureaformaldehyde, 3 to 7 parts of diammonium phosphate, 3 to 6 parts of potassium sulfate, 0.2 to 0.5 part of medium-and-trace element chelate liquid, 1 to 2 parts of high-activity organic acid, 1 to 2 parts of humic acid, 1 to 2 parts of biochemical fulvic acid, 1 to 2 parts of comprehensive microbial inoculum and 0.06 to 0.1 part of a coating material. The invention also provides a preparation method for the special fertilizer used for saline-alkaline land. The special fertilizer used for saline-alkaline land greatly improves the soil structure of saline-alkaline land, improves the utilization rate of the fertilizer, obviously enhances nutrient absorptivity of plants and has the characteristics of high efficiency, safety, environmental protection and greenness.

Description

technical field [0001] The invention relates to the technical field of fertilizer production, in particular to a special fertilizer for saline-alkali land containing medium and trace element chelating liquid and a preparation method thereof. Background technique [0002] The area of ​​saline land in my country is about 36.4 million hectares, 7.6 million hectares of cultivated land are salinized, and nearly one-fifth of the cultivated land is salinized. The improvement of saline-alkali land has extremely important practical significance for the sustainable and healthy development of my country's rural economy, land management, and ecological environment protection. [0003] In recent years, the sales of chemical fertilizers have gradually increased, but the utilization rate of the fertilizer itself is low and the nutrients are not comprehensive. At present, most of the compound fertilizers containing medium and trace elements directly add the inorganic salts or oxides of med...

AI Technical Summary

Problems solved by technology

At present, most of the compound fertilizers containing medium and trace elements directly add the inorganic salts or oxides of medium and trace elements into the nitrogen, phosphorus and potassium compound fertilizer. Due to the solidification of the soil and the antagonism between ions, the utilization rate of medium and trace elements is low.