A kind of powdery multi-element fertilizer anti-hardening additive and its application

Abstract

The invention relates to a powdery multi-element fertilizer anti-hardening additive and an application thereof. The additive contains the following components in percentage by weight: 10-90% of citric acid or citrate and 10-90% of span, and the adding amount of the additive accounts for 0.2-5% of the total weight of a fertilizer. By mixing and adding the additive disclosed by the invention into the powdery multi-element fertilizer, the recrystallization or the bridging strength of the powdery multi-element fertilizer is reduced, the adhesion strength in a powdery multi-element fertilizer system is reduced, the hardening of the fertilizer can be avoided, and the purpose of preventing the hardening of the fertilizer is further achieved; furthermore, the actual production is simple and easy to operate, and the additive only needs to be added into the powdery multi-element fertilizer for uniform mixing and production; and simultaneously, the additive has the advantages of convenience in application, easiness in dissolution, high dissolution speed, capability of being stored for a long time without hardening, good flowability of the fertilizer, appropriate price, no harm to crops, environmental friendliness, no pollution, low production cost and the like, and can greatly promote the popularization of an integrated technology of spray irrigation, drip irrigation, application and the like of the water fertilizer in China.

Description

Technical field [0001] The invention relates to a multi-element fertilizer production additive, in particular to a powdery multi-element fertilizer anti-caking additive. Background technique [0002] The integrated irrigation and fertilization technology of water and fertilizer is widely used in developed agricultural countries such as Israel and the United States because it has many advantages such as improved fertilizer utilization and can be mechanized, large-scale, and low-cost agricultural production. Fertilizers using water and fertilizer integration technology mainly use liquid fertilizers or fast-dissolving powdered multi-element fertilizers. Even if liquid fertilizer can be mechanized for production and transportation, for places where the supporting pipelines are insufficient or long-distance transportation is required, the fast-dissolving powdered multi-element fertilizer with flexible transportation conditions has obvious advantages. [0003] Powdered multi-element fer...

AI Technical Summary

Problems solved by technology

However, these methods will lead to a huge increase in cost

There are also some enterprises that use 2% to 5% octadecylamine and sodium dodecylsulfonate as anti-caking agents and add them to fertilizers. Although this method can achieve a certain anti-caking effect, but The residual pollution after the fertilizer is dissolved is not easy to degrade, and the result is still high cost and poor effect