CN105085005A - Selenium-enriched foliar fertilizer and preparation method therefor - Google Patents

Abstract

The invention discloses a selenium-enriched foliar fertilizer and a preparation method therefore. The selenium-enriched foliar fertilizer is prepared from the following raw materials in parts by weight: 20-35 parts of animal hoof nails, 15-25 parts of waste hairs, 140-200 parts of a 50wt% sulfuric acid solution, 30-55 parts of saturated ammonium water, 6-10 parts of sodium selenite, 8-12 parts of potassium fulvic acid, 14-22 parts of urea, 18-25 parts of monoammonium phosphate, 4-5 parts of an activator and a proper amount of water. The preparation method specifically comprises: degrading the animal hoof nails and hair wastes by using a diluted sulfuric acid solution with a certain concentration to prepare a coarse amino acid solution; adding selenium and inorganic nutrient element and stirring the mixture for 1-3 hours and chelating the mixture at 80-100 DEG C to prepare the efficiently used foliar fertilizer. The problem that the fertilizer enters into soil to lead to pollution one the one hand and severe loss on the other hand is greatly reduced. In particular, the selenium content of crops is improved as a result of the added selenium element, and is chelated with amino acids, so that absorption is accelerated and waste is reduced.

Description

Foliar nutrient of a kind of rich selenium and preparation method thereof

Technical field

The invention belongs to the Technology field of fertilizer, be specifically related to foliar nutrient of a kind of rich selenium and preparation method thereof.

Background technology

Foliage fertilizer is that nutritive element is applied to farm crop blade surface; a kind of fertilizer type of its function is played by the absorption of blade; the blade of plant has upper and lower two-layer epidermis; be made up of epidermic cell; on table, there are stratum corneum and wax in the outside of cell, can protect the functions such as the enforcement of the mesophyll cell under face tissue is photosynthetic, breathing, by the impact of extraneous unfavourable condition change; blade surface also has many small pores, exercises the function that gas is changed.Research shows, stratum corneum is made up of a kind of Long carbon chain fatty acid polymer with hydroxyl and carboxyl, hydroxyl on the molecular gap of this polymkeric substance and molecule, carboxylated hydrophilic group can allow the aqueous solution penetrate in leaf, certainly, the pore of blade surface is that foliage fertilizer enters blade passage more easily.In chemical fertilizer, the stratum corneum of urea class material to epidermic cell has ramollescence, can accelerate the infiltration of other nutritive substance, so urea becomes the important moiety of foliage fertilizer.

Dimethyl dodecyl amine oxide: colourless to pale yellow viscous liquid, a kind of amphoterics, colourless transparent liquid, for weak cation tensio-active agent, in cationic in acidic medium, in nonionic in alkaline medium, there is good thickening, antistatic, soft, foam enhancing and detergency ability; This product pungency is low, effectively can reduce the negatively charged ion pungency in washing composition, also has the features such as sterilization, calcium soap dispersion, readily biodegradable.

Alkyl glycoside is the more comprehensive new non-ionic surfactants of a kind of performance, have the characteristic of conventional nonionic and ionic surface active agent concurrently, having high surface, good ecological security and intermiscibility, is internationally recognized first-selection " green " functional surfactant.

The effect of promoting agent is the penetrating quality increasing foliar nutrient, improve utilization rate of fertilizer, foliage fertilizer absorbs mainly through the blade of plant, promoting agent of the present invention contains kinds of surface active substance, the penetrating power of liquid fertilizer can be improved, reduce the surface tension of liquid fertilizer, increase the contact area of Liquid Fertilizer and blade, slow down velocity of evaporation, penetration enhancement, foliage fertilizer excessive concentration or the too fast blade of likely burning of moisture evaporation, cause fertilizer damage, add a certain amount of activity and stimulating component, be conducive to the cutin destroying blade table confluent monolayer cells, improve absorption rate, improve stress resistance of plant.

Summary of the invention

A kind of foliar nutrient of rich selenium, it is characterized in that, be made up of the raw material of following weight part: animal toenail 20 ~ 35, discarded hair 15 ~ 25,50wt% sulphuric acid soln 140 ~ 200, saturated ammoniacal liquor 30 ~ 55, Sodium Selenite 6 ~ 10, potassium fulvate 8 ~ 12, potassium sulfate 15 ~ 25, urea 14 ~ 22, ammonium hydrogen phosphate 18 ~ 25, promoting agent 4 ~ 5 and appropriate water;

Described promoting agent is made up of the raw material of following weight part: sodium bicarbonate 1 ~ 3, urea 4 ~ 8, dimethyl dodecyl amine oxide 2 ~ 3, kaolin 8 ~ 12, methyl-silicone oil 2 ~ 5, alkyl glycoside 4 ~ 7 and appropriate water; Preparation method is: (1), in reaction cylinder, mixing dimethyl dodecyl amine oxide and alkyl glycoside, be blended into the water dilution of about 20 times its total weight parts, then add methyl-silicone oil, stirs 30 ~ 50min to bubbling under 300 ~ 400r/min condition; (2) kaolin micronizing is crossed 140 mesh sieves, mixing urea and sodium bicarbonate join in the solution described in (1), are heated to 40 ~ 60 DEG C, insulated and stirred 20 ~ 35min.

A preparation method for the foliar nutrient of rich selenium, is characterized in that, comprises following step:

(1) by animal toenail and the mixing of discarded hair, isopyknic water is added, in shredder grinding 20 ~ 30min, filter and clean 1 ~ 3 time to obtain residue, putting into the reactor filling 50wt% sulphuric acid soln, be heated to 80 ~ 105 DEG C, under the heat-retaining condition of 300 ~ 500r/min, stir 8 ~ 14h;

(2) neutralize the solution described in (1) with saturated ammoniacal liquor, adjustment pH is 4.5 ~ 6, centrifugal supernatant liquid under 1200 ~ 1800r/min centrifugal condition;

(3) mix Sodium Selenite, potassium fulvate, potassium sulfate, urea and ammonium hydrogen phosphate, add the water of 4 ~ 6 times, heated and stirred is dissolved, and is cooled to room temperature and obtains nutritive medium;

(4) mix the clear liquid of (2) and the nutritive medium of (3), add promoting agent and other remaining component, be heated to 80 ~ 100 DEG C and stir 1 ~ 3h carry out chelating, after completing.

Beneficial effect of the present invention: the present invention is by the hair waste with certain density dilution heat of sulfuric acid degraded animal toenail and animal, obtained rough amino acid solution, add selenium element and inorganic nutritive element stirs 1 ~ 3h chelating under 80 ~ 100 DEG C of conditions, make a kind of foliar nutrient of efficiency utilization, substantially reduce fertilizer and enter soil, pollute on the one hand, secondly the problem that wastage is serious, the selenium element added especially is conducive to the selenium content improving crop, after carrying out chelating with amino acid, penetration enhancement, cuts the waste.

Embodiment

Embodiment 1:

A kind of foliar nutrient of rich selenium, it is characterized in that, be made up of the raw material of following weight part (Kg): animal toenail 35, discarded hair 15,50wt% sulphuric acid soln 150, saturated ammoniacal liquor 35, Sodium Selenite 7, potassium fulvate 10, potassium sulfate 20, urea 20, ammonium hydrogen phosphate 25, promoting agent 4 and appropriate water;

Described promoting agent is made up of the raw material of following weight part: sodium bicarbonate 3, urea 4, dimethyl dodecyl amine oxide 2, kaolin 10, methyl-silicone oil 3, alkyl glycoside 6 and appropriate water; Preparation method is: (1), in reaction cylinder, mixing dimethyl dodecyl amine oxide and alkyl glycoside, be blended into the water dilution of about 20 times its total weight parts, then add methyl-silicone oil, stirs 30 ~ 50min to bubbling under 300 ~ 400r/min condition; (2) kaolin micronizing is crossed 140 mesh sieves, mixing urea and sodium bicarbonate join in the solution described in (1), are heated to 40 ~ 60 DEG C, insulated and stirred 20 ~ 35min.

A preparation method for the foliar nutrient of rich selenium, is characterized in that, comprises following step:

(1) by animal toenail and the mixing of discarded hair, isopyknic water is added, in shredder grinding 20 ~ 30min, filter and clean 1 ~ 3 time to obtain residue, putting into the reactor filling 50wt% sulphuric acid soln, be heated to 80 ~ 105 DEG C, under the heat-retaining condition of 300 ~ 500r/min, stir 8 ~ 14h;

(2) neutralize the solution described in (1) with saturated ammoniacal liquor, adjustment pH is 4.5 ~ 6, centrifugal supernatant liquid under 1200 ~ 1800r/min centrifugal condition;

(3) mix Sodium Selenite, potassium fulvate, potassium sulfate, urea and ammonium hydrogen phosphate, add the water of 4 ~ 6 times, heated and stirred is dissolved, and is cooled to room temperature and obtains nutritive medium;

(4) mix the clear liquid of (2) and the nutritive medium of (3), add promoting agent and other remaining component, be heated to 80 ~ 100 DEG C and stir 1 ~ 3h carry out chelating, after completing.

Be used for the foliar nutrient of rich selenium of the present invention planting common agricultural experiment, select 5 mu of planting bases, mix and slottingly spray fertilizer of the present invention, as experimental group, common fertilizer is executed in 5 mu of bases of control group routinely planting requirement, and other condition is identical, and experiment proves, the farm crop of experimental group plantation, except its stalk and branches and leaves more sturdy, growing way is obviously better than outside control group, and the content of its selenium element has more 4.3%, decreasing pollution in addition, product is more healthy.

Claims (2)

1. the foliar nutrient of a rich selenium, it is characterized in that, be made up of the raw material of following weight part: animal toenail 20 ~ 35, discarded hair 15 ~ 25,50wt% sulphuric acid soln 140 ~ 200, saturated ammoniacal liquor 30 ~ 55, Sodium Selenite 6 ~ 10, potassium fulvate 8 ~ 12, potassium sulfate 15 ~ 25, urea 14 ~ 22, ammonium hydrogen phosphate 18 ~ 25, promoting agent 4 ~ 5 and appropriate water;

Described promoting agent is made up of the raw material of following weight part: sodium bicarbonate 1 ~ 3, urea 4 ~ 8, dimethyl dodecyl amine oxide 2 ~ 3, kaolin 8 ~ 12, methyl-silicone oil 2 ~ 5, alkyl glycoside 4 ~ 7 and appropriate water; Preparation method is: (1), in reaction cylinder, mixing dimethyl dodecyl amine oxide and alkyl glycoside, be blended into the water dilution of about 20 times its total weight parts, then add methyl-silicone oil, stirs 30 ~ 50min to bubbling under 300 ~ 400r/min condition; (2) kaolin micronizing is crossed 140 mesh sieves, mixing urea and sodium bicarbonate join in the solution described in (1), are heated to 40 ~ 60 DEG C, insulated and stirred 20 ~ 35min.

2. the preparation method of a kind of foliar nutrient of rich selenium according to claim 1, is characterized in that, comprise following step:

(1) by animal toenail and the mixing of discarded hair, isopyknic water is added, in shredder grinding 20 ~ 30min, filter and clean 1 ~ 3 time to obtain residue, putting into the reactor filling 50wt% sulphuric acid soln, be heated to 80 ~ 105 DEG C, under the heat-retaining condition of 300 ~ 500r/min, stir 8 ~ 14h;

(2) neutralize the solution described in (1) with saturated ammoniacal liquor, adjustment pH is 4.5 ~ 6, centrifugal supernatant liquid under 1200 ~ 1800r/min centrifugal condition;

(3) mix Sodium Selenite, potassium fulvate, potassium sulfate, urea and ammonium hydrogen phosphate, add the water of 4 ~ 6 times, heated and stirred is dissolved, and is cooled to room temperature and obtains nutritive medium;

(4) mix the clear liquid of (2) and the nutritive medium of (3), add promoting agent and other remaining component, be heated to 80 ~ 100 DEG C and stir 1 ~ 3h carry out chelating, after completing.