Stabilized fertilizer containing alginate and application of stabilized fertilizer

Abstract

The invention belongs to the technical field of fertilizers and in particular relates to a stabilized fertilizer containing alginate. The stabilized fertilizer disclosed by the invention mainly comprises alginate, a urease inhibitor, a nitrification inhibitor and a phosphorus activator. The alginate, long-acting inhibitors (such as composite microbial agents) and the like are added into the stabilized fertilizer disclosed by the invention, and the fertilizers can inhibit hydrolysis of urea through urease and inhibit nitrification of ammonium nitrogen through the nitrification inhibitor after being applied to soil, and the fertilizer can achieve the effects of activating phosphorus in the soil, improving the nitrogen and phosphorus utilization ratio, and prolonging the fertilizer efficiency, so that single-dose application without topdressing is realized. Compared with an ordinary chemical fertilizer, the stabilized fertilizer disclosed by the invention has the advantages that the effective nitrogen content is improved by 60-120% after applied by 120 days, the chemical fertilizer utilization ratio can be improved to 42-45%, and the problems existing in the traditional fertilizer such as low fertilizer efficiency, short effective period, high potassium application rate and the like are effectively solved.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, in particular to a stable fertilizer containing alginate. Background technique [0002] Urease is an enzyme that hydrolyzes urea in soil. The existence of urease in soil was discovered by Rotini in 1935. Subsequently, the work of Conrad et al. provided convincing evidence for urease in soil, revealing the existence of urease in soil. Catalysis is the key factor for the transformation and decomposition of urea in soil. [0003] Soil urease is a biocatalyst composed of simple proteins. It is generally believed to be produced by microorganisms in the soil. It is a highly specific aerobic hydrolase that can catalyze the decomposition of urea and has ammonification in the soil. Soil The nature of urease is different from the pure urease decomposed from the organism. The soil urease only catalyzes urea, and has no effect on other derivatives of urea. The activity of urease is the most important f...

AI Technical Summary

Problems solved by technology

[0009] Many nitrification inhibitors work well in the experimental research stage, but the effect in field application is not ideal; the characteristics of some nitrification inhibitors make their popularization and application limited, for example, because acetylene is a kind of gas, when its After being introduced into the soil, it is easy to escape from the soil pores, thus affecting its nitrification inhibition effect; some nitrification inhibitors are highly toxic and have a toxic effect on soil animals and soil microorganisms; some nitrification inhibitors have residues that will pollute the soil environment