Powdery saline-alkali soil water-retention slow-release fertilizer

Abstract

The invention discloses a powdery saline-alkali soil water-retention slow-release fertilizer. The technical scheme of the powdery saline-alkali soil water-retention slow-release fertilizer has the key point that the ingredients of the powdery saline-alkali soil water-retention slow-release fertilizer consist of high-viscosity attapulgite clay powder, acidized attapulgite clay powder, ardealite, ammonia sulfate, calcium superphosphate, potassium sulphate, sulfuric acid, super absorbent resin and microelement mixture, and the ingredients of the powdery saline-alkali soil water-retention slow-release fertilizer are smashed after being stirred and are packed as the finished product of the powdery saline-alkali soil water-retention slow-release fertilizer. The powdery saline-alkali soil water-retention slow-release fertilize is acidic, the alkalinity of soil can be lowered, calcium ions contained in the fertilizer can be used for replacing sodions on a saline alkali soil colloid, so that the content of the soil exchangeable sodions is lowered, and a purpose of improving the saline-alkali soil is achieved. The powdery saline-alkali soil water-retention slow-release fertilizer contains a great quantity of nitrogen, phosphorus and potassium and various trace elements, has the functions on slow release of fertilizer efficiency and water retention and is suitable for topdressing on the saline-alkali soil, and necessary nutritional ingredients for plant growth can be provided.

Description

technical field [0001] The invention relates to the field of soil, in particular to a powdery water-retaining slow-release fertilizer for saline-alkali soil. Background technique [0002] my country's inland saline-alkali soil is mainly distributed in Northeast China, North China, Northwest China and other places. Although gardens and green spaces are built on good land in some areas, irrigation with underground saline water will also cause secondary saline-alkali land in the soil. [0003] The most intuitive manifestation of saline-alkali soil is soil compaction and poor soil structure. After irrigation, soil particles are easy to disperse and form crusts, thereby preventing water infiltration and reducing soil water storage capacity. [0004] Due to the limitation of local conditions such as soil and climate, the saline-alkali land greening project is very difficult in construction and post-maintenance. Improving the survival rate of flower seedlings is a top priority, and...

AI Technical Summary

Problems solved by technology

[0004] Due to the limitation of local conditions such as soil and climate, the saline-alkali land greening project is very difficult in construction and post-maintenance. Improving the survival rate of flower seedlings is a top priority, and alkaline water and soil are the main obstacles to the death of flower seedlings. Therefore, it is necessary to choose correctly Suitable water, soil and fertilizer, while the fertilizer ingredients supplied in the market are relatively traditional nitrogen, phosphorus and potassium compound fertilizers, which cannot meet the needs of saline-alkali landscaping projects

[0005] Phosphogypsum is a by-product of the sulfuric acid extraction process of phosphoric acid production. Every ton of phosphoric acid produced will produce 4.5-5.5 tons of phosphogypsum. The large discharge of phosphogypsum not only occupies a large amount of land, but also causes damage to the soil due to the long-term soaking of phosphogypsum in rainwater. , serious pollution of water system and atmosphere