CN102731208B - Special composite particle slow-release fertilizer for rape, and preparation method thereof - Google Patents

Abstract

The present invention provides a special composite particle slow-release fertilizer for rape. The fertilizer comprises the following components, by weight, 22kg of potassium chloride, 25kg of monoammonium phosphate, 45kg of ammonium chloride, 5kg of urea, 10kg of a slow-release agent, and 13kg of an attapulgite powder, wherein the slow-release agent comprises the following components, by weight, 4kg of polyvinyl alcohol, 3kg of formaldehyde, 2kg of bamboo carbon, 12kg of glyceryl ester, 4kg of poly lactic acid, 4kg of an amino resin, and 67kg of distilled water. The special composite particle slow-release fertilizer for the rape in the present invention has the following advantages that: the fertilizer contains a large amount of rich nitrogen, phosphorus, potassium, and other nutrient elements required by rape growth; the nutrients in the fertilizer can be stably released, such that the rape can absorb the nutrients balanced so as to improve yield and quality of the rape; and characteristics of low cost and environment protection are provided.

Description

A kind of rape compound particle slow release fertilizer special and preparation method thereof

Technical field

The present invention relates to the agrochemical field, be specifically related to a kind of rape compound particle slow release fertilizer special and preparation method thereof.

Background technology

Along with the development of science and technology, on agricultural, the kind of composite fertilizer is also more and more, and the nutritive ingredient that contains also emphasizes particularly on different fields; but rape compound particle slow release fertilizer special; yet there are no report, the invention provides a kind of rape compound particle slow release fertilizer special, the process of growth that is exclusively used in rape is used.

Summary of the invention

The invention provides a kind of rape compound particle slow release fertilizer special and preparation method thereof; slow-release fertilizer of the present invention contains the necessary macroelement of growth of rape such as abundant nitrogen, phosphorus, potassium; make rape more balanced to the absorption of nutrient, be conducive to improve the quality and yield of rape.

The technical solution used in the present invention is as follows for achieving the above object:

A kind of rape compound particle slow release fertilizer special is comprised of following component, and the weight of each component is:

Take Repone K 22kg, monoammonium phosphate 25kg, ammonium chloride 45kg, urea 5kg, sustained release dosage 10kg, attapulgite 13kg.

Described sustained release dosage is comprised of following component, and it respectively forms component and weight is:

Polyvinyl alcohol 4kg, formaldehyde 3kg, chitosan 4kg, bamboo charcoal 2kg, glyceryl ester 12kg, poly(lactic acid) 4kg, aminoresin 4kg, distilled water 67kg.

The preparation method of described sustained release dosage is:

(1) add the distilled water of formulation weight in reactor, and be heated to 85～90 ℃, then add the polyvinyl alcohol of formulation weight, constantly be stirred to polyvinyl alcohol and dissolve fully; Then be cooled to 80 ℃ of left and right, regulating the pH value is 3～4; The formaldehyde that adds wherein formulation weight maintains the temperature at 80～85 ℃, stirring reaction 30 minutes, and regulating the pH value is 7～8, gets solution A;

(2) add successively chitosan, the bamboo carbon powder of formulation weight in the solution A, and stir and make its abundant mixing, be cooled to 50～55 ℃, add the glyceryl ester of formulation weight, stirring reaction 1.5～2 hours gets solution B;

(3) in another reactor, add the poly(lactic acid) of formulation weight, pass into hot steam, it is melted fully, then add wherein formulation weight aminoresin, and stir and to make its abundant mixing, get solution C;

(4) molten C is joined middle solution B, maintains the temperature at 90～95 ℃, stirring reaction 1～2 hour, cooling after, get final product.

The preparation method of rape compound particle slow release fertilizer special comprises the following steps:

(1) feed intake: add in proportion Repone K, monoammonium phosphate in tablets press;

(2) evenly mix, the rotating speed of tablets press is that 45-55 turns;

(3) pulverize: urea granules is pulverized;

(4) secondary batching: add in proportion urea, ammonium chloride, auxiliary material in tablets press;

(5) secondary evenly mixes, and intermittent type passes into hot steam, the drum hot blast, and the rotating speed of tablets press is that 45-55 turns;

(6) intermittent type spraying sustained release dosage, the drum hot blast, the rotating speed of tablets press is that 45-55 turns;

(7) screening;

(8) oven dry;

(9) packing warehouse-in.

This rape compound particle slow release fertilizer special is at rape seed or before transplanting, and in conjunction with whole ground, depending on the soil fertility situation, every mu of Base-appling once 25～35kg or base are executed 15～20kg, then impose 10～15kg in elongation, spreads fertilizer over the fields, spreads manuer in holes or row replacement all can.

Beneficial effect of the present invention:

1) this product contains the necessary macroelement of growth of rape such as abundant nitrogen, phosphorus, potassium, makes rape more balanced to the absorption of nutrient, is conducive to improve the quality and yield of rape.

2) this product can slowly discharge nutritive element enduringly in conjunction with growth characteristics and the regulation of fertilizer requirement of rape, makes effective release period prolongation of nutrient in fertilizer, thereby satisfies the growth of rape middle and later periods for the demand of nutrient, avoids early ageing and takes off fertilizer.

3) this product can satisfy rape whole breeding time for one to twice to the demand of nutrient as base manure to rape fertilising, compares and uses conventional fertilizer, apply fertilizer within the whole breeding time of rape 3～4 times even more, have the saving of labor, save time, the advantage such as environmental protection.

4) product is applicable to most of soil in China's rape producing region.

Embodiment

Take Repone K 22kg, monoammonium phosphate 25kg, ammonium chloride 45kg, urea 5kg, sustained release dosage 10kg attapulgite 13kg,

Follow these steps to preparation:

(1) feed intake: will weigh up Repone K, monoammonium phosphate and add in proportion in tablets press; (2) evenly mix, the rotating speed of tablets press is 50 to turn; (3) pulverize: urea granules is pulverized; (4) secondary batching: add in proportion urea, ammonium chloride, attapulgite in tablets press; (5) secondary evenly mixes, and intermittent type passes into hot steam, the drum hot blast, and the rotating speed of tablets press is 50 to turn; (6) intermittent type spraying sustained release dosage, drum hot blast, the rotating speed of tablets press are 50 to turn; (7) screening; (8) oven dry; (9) packing warehouse-in.

Wherein, the preparation method of sustained release dosage is:

(1) add distilled water 67kg in reactor, and be heated to 85～90 ℃, add polyvinyl alcohol 4kg, constantly be stirred to polyvinyl alcohol and dissolve fully; Then be cooled to 80 ℃ of left and right, regulating the pH value is 3～4; Add formaldehyde 3kg in reactor, maintain the temperature at 80～85 ℃, stirring reaction 30 minutes; Regulating the pH value is 7～8, obtains solution A;

(2) add successively chitosan 4kg, bamboo carbon powder 2kg in solution A, and stirring makes its abundant mixing; Be cooled to 50～55 ℃, add glyceryl ester 12kg, stirring reaction 1.5～2 hours, solution B;

(3) in another reactor, add poly(lactic acid) 4kg, pass into hot steam, it is melted fully; Add wherein again aminoresin 4kg, and stir and to make its abundant mixing, obtain solution C;

(4) solution C is added in solution B, maintains the temperature at 90～95 ℃, stirring reaction 1～2 hour, cooling after, get final product.

Testing data

This rape compound particle slow release fertilizer special is seen lower list 1, table 2 in the impact aspect yield of rape and economic benefit thereof:

The impact of table 1 different fertilization on yield of rape

Fertilizer of the present invention has obvious effect of increasing production with respect to using conventional fertilizer as can be seen from Table 1, and the average every mu of volume increase of Semen Brassicae campestris reaches respectively 16.3% and 21%.

The economic benefit of table 2 different fertilization

Annotate: Semen Brassicae campestris is by 3.5 yuan/kg, and the rape compound particle slow release fertilizer special is by 3000 yuan/t, and urea is by 2000 yuan/t, and calcium superphosphate is by 600 yuan/t, and Repone K is by 4200 yuan/t.

The economic benefit of fertilizer of the present invention is apparently higher than the economic benefit of using conventional fertilizer as shown in Table 2, and average every mu of economic benefit increases respectively 32% and 33%.

Claims (2)

1. a rape compound particle slow release fertilizer special, is characterized in that, is comprised of following component, and the weight of each component is:

Take Repone K 22kg, monoammonium phosphate 25kg, ammonium chloride 45kg, urea 5kg, sustained release dosage 10kg, attapulgite 13kg,

Described sustained release dosage is comprised of following component, and it respectively forms component and weight is:

Polyvinyl alcohol 4kg, formaldehyde 3kg, chitosan 4kg, bamboo charcoal 2kg, glyceryl ester 12kg, poly(lactic acid) 4kg, aminoresin 4kg, distilled water 67kg;

The preparation method of described sustained release dosage is:

(1) add the distilled water of formulation weight in reactor, and be heated to 85～90 ℃, then add the polyvinyl alcohol of formulation weight, constantly be stirred to polyvinyl alcohol and dissolve fully; Then be cooled to 80 ℃ of left and right, regulating the pH value is 3～4; The formaldehyde that adds wherein formulation weight maintains the temperature at 80～85 ℃, stirring reaction 30 minutes, and regulating the pH value is 7～8, gets solution A;

(2) add successively chitosan, the bamboo carbon powder of formulation weight in the solution A, and stir and make its abundant mixing, be cooled to 50～55 ℃, add the glyceryl ester of formulation weight, stirring reaction 1.5～2 hours gets solution B;

(3) in another reactor, add the poly(lactic acid) of formulation weight, pass into hot steam, it is melted fully, then add wherein formulation weight aminoresin, and stir and to make its abundant mixing, get solution C;

(4) molten C is joined middle solution B, maintains the temperature at 90～95 ℃, stirring reaction 1～2 hour, cooling after, get final product.

2. the preparation method of a kind of rape compound particle slow release fertilizer special according to claim 1, is characterized in that, comprises the following steps:

(1) feed intake: add in proportion Repone K, monoammonium phosphate in tablets press;

(2) evenly mix, the rotating speed of tablets press is that 45-55 turns;

(3) pulverize: urea granules is pulverized;

(4) secondary batching: add in proportion urea, ammonium chloride, auxiliary material in tablets press;

(5) secondary evenly mixes, and intermittent type passes into hot steam, the drum hot blast, and the rotating speed of tablets press is that 45-55 turns;

(6) intermittent type spraying sustained release dosage, the drum hot blast, the rotating speed of tablets press is that 45-55 turns;

(7) screening;

(8) oven dry;

(9) packing warehouse-in.