CN104710217A - Preparation method of long-acting polypeptide blended fertilizer - Google Patents

Abstract

Disclosed is a preparation method of a long-acting polypeptide blended fertilizer. The fertilizer is uniformly mixed by 500 parts by weight of urea, 130 parts by weight of monoammonium phosphate, 120 parts by weight of ammonium dihydrogen phosphate, 120 parts by weight of potassium chloride, and 45 parts by weight of light clay. The mixture is prepared into fertilizer particles containing macroelements and having average particle diameter of 2mm-3mm through a pelleting machine. Three parts of polyaspartic acid are dissolved in water, and are uniformly sprayed on the surfaces of the fertilizer particles containing macroelements, and then 42 parts of light clay are used for coating the fertilizer particles to prepare the long-acting polypeptide blended fertilizer. The invention has advantages that: the production technology is simple; light clay is taken as a coating agent, is sprayed on the surfaces of the fertilizer particles, and has a function of controlling releasing of the fertilizer, so that a fertilizer effect can be effectively developed; polyaspartic acid can prompt root growth; absorptivity of nutrients by crops is improved; the utilization rate of marcoelements of nitrogen, phosphor, and potassium by the crops is increased more than 30%; and soil hardening is reduced.

Description

The preparation method of the long-acting Bulk Blending Fertilizer of one peptide species

Technical field

The present invention relates to the preparation method of the long-acting Bulk Blending Fertilizer of a peptide species.

Background technology

Fertilizer effectively can improve the output of farm crop, is one of requisite basic substance in agriculture production.At present, when nitrogen, phosphorus, potassium three kinds of Term Fertilizations, due to factors such as volatilization, leaching and runoffs, average loss about 40%, the fertilizer chemistry of loss is fixed in soil, polluted surface and underground water, causes soil compaction.Research shows, slow-release or control-release fertilizer can improve the utilization ratio of fertilizer nutrient.

Poly aspartic acid is that day amino of propylhomoserin monomer and carboxyl condensation reaction are dewatered the polymkeric substance obtained, and its maximum feature is biodegradable, nontoxic, environmental sound, is therefore called as " green " chemical.

Summary of the invention

The technical problem to be solved in the present invention was to provide one and had slow releasing function, and utilization rate of fertilizer is high, reduced the preparation method of the long-acting Bulk Blending Fertilizer of polypeptide of soil compaction.

Technical solution of the present invention is:

The preparation method of the long-acting Bulk Blending Fertilizer of one peptide species, its concrete steps are:

Count by weight; get 500 parts of urea, 130 parts of monoammonium phosphates, 120 parts of primary ammonium phosphates, 120 parts of Repone K and 45 parts of soft clays mix; the macroelement fertilizer particle that median size is 2mm-3mm is obtained with nodulizer; 3 parts of poly aspartic acids are dissolved in the water; even spray wraps in described macroelement fertilizer particle surface; then dressing is carried out with 42 parts of soft clays, the obtained long-acting Bulk Blending Fertilizer of polypeptide.

Beneficial effect of the present invention:

(1), production technique is simple, using soft clay as Drug coating, containing the abundant trace element such as silicon, aluminium, iron, calcium, magnesium, potassium, sodium in soft clay, impose in soil, can fully be absorbed by plant, there is the effect of micro-fertilizer, be conducive to plant-growth, spray is wrapped in the surface of fertilizer, fertilizer is played to the effect of controlled release, effectively can play fertilizer efficiency, decrease hardening of soil, soft clay high adsorption capacity, had good sustained release effect, effectively prevent and wash away through rainwater and Guan Dishui the loss caused.

(2), abundant carboxyl is contained in poly aspartic acid macromole, carboxyl ionizes and forms carboxyl negative ion in water, can with nitrogen, phosphorus, potassium different kinds of ions generation complexing should, thus promote the growth of root system, improve farm crop to the specific absorption of nutrient, increase crop yield, nitrogen, phosphorus, potassium macroelement utilization ratio improve more than 30%, decrease hardening of soil.

Embodiment

Take 500 kilograms, urea, monoammonium phosphate 130 kilograms, primary ammonium phosphate 120 kg, Repone K 120 kg and soft clay 45 kilograms to mix; the macroelement fertilizer particle that median size is 2mm-3mm is obtained with nodulizer; 3 kilograms of poly aspartic acids are dissolved in 10L water; even spray wraps in described macroelement fertilizer particle surface; then dressing is carried out with 42 kilograms of soft clays, the obtained long-acting Bulk Blending Fertilizer of polypeptide.Be applied in maize field by long-acting for this peptide Bulk Blending Fertilizer, fertilizer efficiency period is 63 days, extends 30 days than common fertilizer.Nitrogen, phosphorus, potassium macroelement utilization ratio improve 33.1%.

Claims (1)

1. the preparation method of the long-acting Bulk Blending Fertilizer of a peptide species, is characterized in that: concrete steps are as follows:

Count by weight; get 500 parts of urea, 130 parts of monoammonium phosphates, 120 parts of primary ammonium phosphates, 120 parts of Repone K and 45 parts of soft clays mix; the macroelement fertilizer particle that median size is 2mm-3mm is obtained with nodulizer; 3 parts of poly aspartic acids are dissolved in the water; even spray wraps in described macroelement fertilizer particle surface; then dressing is carried out with 42 parts of soft clays, the obtained long-acting Bulk Blending Fertilizer of polypeptide.