Novel agricultural fertilizer and preparation method thereof

Abstract

The invention provides novel agricultural fertilizer and a preparation method thereof. Urea entrapped attapulgite and a sodium alginate substrate are taken as inner cores of the fertilizer, a carboxymethyl modified wheat straw / sodium alginate blend containing urea and borax is taken as an inner coating material, poly(acrylic acid-co-N-methylolacrylamide) attapulgite composited super absorbent resin is taken as an outer coating material, and the fertilizer has a core-shell structure and contains 23.3% of nitrogen and 0.65% of boron. The crop wheat straw is introduced and N-methylolacrylamide is taken as a crosslinking agent. The novel agricultural fertilizer has the beneficial effects as follows: with introduction of the crop wheat straw and application of N-methylolacrylamide as the crosslinking agent, the degradation property of the super absorbent resin can be improved; double layers of the coating materials of the fertilizer both select the crop straw, so that the production cost of the slow release fertilizer can be reduced greatly, the fertilizer is environment-friendly, and one way is provided for utilization of crop resources.

Description

technical field [0001] The invention relates to the field of fertilizers, in particular to novel agricultural fertilizers. Background technique [0002] As population, resources, and environmental issues become increasingly prominent, agricultural production must optimize nutrient use efficiency from economic and environmental perspectives while ensuring high yields. Slow and controlled-release fertilizers can significantly improve the utilization rate of fertilizers, reduce nutrient volatilization and leaching losses, and reduce environmental pollution caused by excessive fertilization, so they have attracted extensive attention from researchers. Wheat straw is a renewable resource with a huge amount in nature. It is rich in cellulose components and can play an important role in many fields. However, the existing utilization status is that a considerable part of wheat straw is used at low value or directly discarded and burned, which is not only a huge waste of resources, ...

AI Technical Summary

Problems solved by technology

However, the existing utilization status is that a considerable part of wheat straw is used at low value or directly discarded and burned, which is not only a huge waste of resources, but also a serious pollution to the environment.