Controlled-release nitrogen fertilizer

Abstract

The invention discloses a controlled-release nitrogen fertilizer. The controlled-release nitrogen fertilizer comprises the following components: A, nitrogen fertilizer; B, compound-fertilizer long-lasting agent, potassium humate, hydrolyzed amino acid chelated multielement powder and DA-6 (diethylaminoethyl hexanoate), wherein the nitrogen fertilizer contains two or more than two forms of nitrogen. The controlled-release nitrogen fertilizer disclosed by the invention has the advantages that controlled release of nitrogen can be effectively carried out, the controlled-release effect is good, the controlled release of nitrogen element of different forms can be carried out at different stages, simultaneously the fertilizer efficiency is sufficient, and the nutrition is comprehensive; and for crops using the controlled-release nitrogen fertilizer, the growth is excellent and the phenomenon of element deficiency can be avoided.

Description

technical field [0001] The invention belongs to the technical field of chemical fertilizers, in particular to the technical field of nitrogen fertilizers. Background technique [0002] Controlled-release fertilizers refer to fertilizers that can control the release of fertilizers at an appropriate time or location through preset measures or mechanisms. Usually, fertilizers are set to be released during the crop growing season, so that the release of fertilizer nutrients is basically synchronized with the absorption of crop nutrients. , so as to achieve the purpose of improving fertilizer efficiency. [0003] The current controlled-release nitrogen fertilizers are divided into physical controlled release and chemical controlled release according to the principle of controlled release. Among them, physical controlled release is mostly in the form of resin coating or sulfur and other inert material coatings. The disadvantage is that the coating has a negative effect on the soil...

AI Technical Summary

Problems solved by technology

[0003] The current controlled-release nitrogen fertilizers are divided into physical controlled release and chemical controlled release according to the principle of controlled release. Among them, physical controlled release is mostly in the form of resin coating or sulfur and other inert material coatings. The disadvantage is that the coating has a negative effect on the soil. Hazards, especially for resin coatings, the small molecular additives in the coating are easy to penetrate into the soil or accumulate in plants, while the macromolecular structure of the resin itself is difficult to degrade, which will cause harm to the environment and easily lead to soil compaction and loss of fertility, etc. phenomenon appears; chemical controlled release, mainly by adopting 1~2 kinds of inhibitors such as urease inhibitors and nitrification inhibitors to control the release of nitrogen. lead to poor crop growth