CN102584442A - Biological compound fertilizer and preparation method thereof - Google Patents

Abstract

The invention discloses a biological compound fertilizer and a preparation method thereof. The method comprises the following steps of: mixing and stirring 18 to 22 parts of potassium sulfate, 21 to 25 parts of monoammonium phosphate, 55 to 65 parts of urea, 72 to 82 parts of humic acid and 18 to 22 parts of silicate bacteria, pelletizing, drying, and packaging to prepare the biological compound fertilizer. By the biological compound fertilizer, phosphorus and potassium can be dissolved, nitrogen can be fixed, apatite, tricalcium phosphate and organic phosphorus compounds in soil can be gradually decomposed, phosphorus pentoxide is released and effectively utilized by plants grown in the soil, potassium in primary minerals such as feldspar, mica and the like is decomposed, and soluble potassium is released to a soil solution and utilized by crops; and the compound fertilizer has the phosphorus dissolving rate of 7 to 15 percent, the potassium dissolving rate of 7 to 15 percent and the nitrogen fixing rate of 5 to 13 percent.

Description

A kind of composite bio-fertilizer and preparation method thereof

Technical field

The present invention relates to a kind of compound manure, particularly a kind of composite bio-fertilizer and preparation method thereof.

Background technology

Phosphorus in China's soil, potassium mineral standing stock are very abundant, and per kilogram soil contains full phosphorus 400-1200mg approximately, crop can only directly utilize wherein 5%; Phosphate fertilizer major part during manual work is manured into soil is also by soil fixing; Change into tricalcium phosphate, the standing stock of potassium are also quite abundant in the same soil, and every mu contains the 1500-4500 kilogram approximately in the 20cm arable layer; But these potassium overwhelming majority are present in feldspar, the mica group primary mineral, can not directly be utilized by crop.

Summary of the invention

For solving the deficiency of prior art; The present invention provides a kind of composite bio-fertilizer, but phosphatic rock and tricalcium phosphate and organo phosphorous compounds in the soil can be progressively decomposed in phosphorus decomposing, potassium decomposing, fixed nitrogen; Discharge Vanadium Pentoxide in FLAKES; For growing plants on the soil effectively utilizes, decompose the potassium in the primary minerals such as feldspar, mica group simultaneously, release soluble potassium in the soil solution by crop utilization.

Another object of the present invention provides the preparation method of this composite fertilizer.

To achieve these goals, technical scheme of the present invention is: a kind of composite bio-fertilizer, its raw material is formed and parts by weight are: vitriolate of tartar 18-22, monoammonium phosphate 21-25, urea 55-65, humic acid 72-82, silicate bacteria 18-22.

Further, its raw material composition and parts by weight thereof are: vitriolate of tartar 20, monoammonium phosphate 235, urea 60, humic acid 75, silicate bacteria 20.

Preparing compound fertilizer method of the present invention

(1) above-mentioned raw materials is mixed stirring by weight, pulverizes;

(2) will pulverize the back powder delivers to and adds the water granulation in the granulating disc;

(3) oven dry is put into dryer with the particle after the granulation and is dried, and bake out temperature is 150 ℃～170 ℃, and drying time is 20～30 minutes;

(4) cooling, with the fertiliser granulates air cooling after the oven dry, be 15～25 minutes cooling time;

(5) sub-sieve, metering, packing are packaged into bag after weighing after the cooled fertilizer screening.

The invention has the beneficial effects as follows:

1, this composite bio-fertilizer has the effect of phosphorus decomposing, can progressively decompose phosphatic rock and tricalcium phosphate and organo phosphorous compounds in the soil, discharges Vanadium Pentoxide in FLAKES, and for growing plants on the soil effectively utilizes, this composite fertilizer's phosphorus decomposing rate reaches 7-15%.

2, potassium decomposing, this composite fertilizer can decompose the potassium in the primary minerals such as feldspar, mica group, and by crop utilization, the potassium decomposing rate can reach 7-15% to release soluble potassium in the soil solution.

3, fixed nitrogen, the fixed nitrogen rate of this composite fertilizer can reach 5-13%.

4, the organic matter in the composite fertilizer contain>=15%, humic acid>=10%, N+P ₂O ₅+ K ₂O>=25%.

Embodiment

Below in conjunction with embodiment the present invention is done further explain.

Embodiment 1:

Choose 18 parts of vitriolate of tartar by weight, 21 parts of monoammonium phosphates, 68 parts in urea, 75 parts of humic acid, 18 parts of silicate bacterias mix above-mentioned raw materials stirring, pulverize; Powder is delivered to and is added the water granulation in the granulating disc after will pulverizing; Then the particle after the granulation is put into dryer and dry, bake out temperature is 150 ℃, and drying time is 30 minutes; With the fertiliser granulates air cooling after the oven dry, be 15 minutes cooling time; After weighing after the cooled fertilizer screening, be packaged into bag.

Embodiment 2:

Choose 20 parts of vitriolate of tartar by weight, 25 parts of monoammonium phosphates, 53 parts in urea, 82 parts of humic acid, 20 parts of silicate bacterias mix above-mentioned raw materials stirring, pulverize; Powder is delivered to and is added the water granulation in the granulating disc after will pulverizing; Then the particle after the granulation is put into dryer and dry, bake out temperature is 170 ℃, and drying time is 20 minutes; With the fertiliser granulates air cooling after the oven dry, be 25 minutes cooling time; After weighing after the cooled fertilizer screening, be packaged into bag at last.

Embodiment 3:

Choose 22 parts of vitriolate of tartar by weight, 24 parts of monoammonium phosphates, 60 parts in urea, 72 parts of humic acid, 22 parts of silicate bacterias mix above-mentioned raw materials stirring, pulverize; Powder is delivered to and is added the water granulation in the granulating disc after will pulverizing; Then the particle after the granulation is put into dryer and dry, bake out temperature is 160 ℃, and drying time is 25 minutes; With the fertiliser granulates air cooling after the oven dry, be 20 minutes cooling time; After weighing after the cooled fertilizer screening, be packaged into bag at last.

Technical scheme of the present invention is not limited to the restriction of above-mentioned specific embodiment, and the technology distortion that every technical scheme according to the present invention is made all falls within protection scope of the present invention.

Claims (3)

1. composite bio-fertilizer is characterized in that: the raw material of said composite bio-fertilizer is formed and parts by weight are: vitriolate of tartar 18-22, monoammonium phosphate 21-25, urea 55-65, humic acid 72-82, silicate bacteria 18-22.

2. composite bio-fertilizer according to claim 1 is characterized in that: the raw material of described composite bio-fertilizer is formed and parts by weight are vitriolate of tartar 20, monoammonium phosphate 235, urea 60, humic acid 75, silicate bacteria 20.

3. the preparation method of the composite bio-fertilizer of claim 1 or claim 2, it is characterized in that: (1) is mixed above-mentioned raw materials by weight stirring, is pulverized;

(2) will pulverize the back powder delivers to and adds the water granulation in the granulating disc;

(3) oven dry is put into dryer with the particle after the granulation and is dried, and bake out temperature is 150 ℃～170 ℃, and drying time is 20～30 minutes;

(4) cooling, with the fertiliser granulates air cooling after the oven dry, be 15～25 minutes cooling time;

(5) sub-sieve, metering, packing are packaged into bag after weighing after the cooled fertilizer screening.