Fertilizer special for maintaining lawns and preparation method thereof

Abstract

The invention discloses a fertilizer special for maintaining lawns and a preparation method thereof. The method comprises the following steps: weighing, mixing and stirring citric acid, zinc sulphate powder, copper sulphate powder, manganese sulphate powder, ferrous sulphate powder, borax powder, ammonium molybdate and water at a temperature of 80-90 DEG C for 40-60 minutes to prepare trace element chelate fertilizer liquid; weighing, mixing and stirring polyvinyl alcohol, cornstarch and dicyandiamide powder at a reaction temperature of 80-90 DEG C for 40-60 minutes to prepare bonding liquid;uniformly mixing the trace element chelate fertilizer liquid and the bonding liquid according to a mass ratio of 1:4 for spare; weighing, drying, crushing and screening pyrobituminous shale residue, furfural residue, calcium carbonate, magnesium sulphate, urea, diammonium phosphate and potassium sulphate by a screen of 100-120 meshes; uniformly mixing; adding the mixture to a pelletizer; and spraying the mixed liquid to granulate so as to obtain the fertilizer special for maintaining lawns. The invention has the advantages of enough nutrients, good slow release, and the like, prolongs the nutrient-supplying time and protects the biological environment.

Description

1. Technical field

[0001] The invention belongs to the technical field of chemical fertilizers, and in particular relates to a special fertilizer for lawn maintenance and a preparation method thereof. 2. Background technology

[0002] At present, lawn has become an important symbol of urban greening, and the original soil in many cities is covered by lawn grass. Under normal circumstances, turfgrass needs to maintain fixed growth for many years. In addition to applying base fertilizer when building a lawn, topdressing is also required during the growing season of turfgrass. Since turfgrass needs to be trimmed frequently, a large amount of fertilizer is required. The existing fertilizers applied are not sufficient in nutrients and have poor slow-release properties, making it difficult to meet the long-term growth needs of turfgrass.

[0003] Oil shale is a kind of sedimentary rock containing organic matter. The proven resource in my country is 2.4 billion tons. As the world...

Examples

Embodiment 1

[0020] Embodiment 1: according to the mass ratio of 5: 0.01: 0.01: 0.01: 0.01: 0.01: 0.01: 14.94, take respectively citric acid (CIT), zinc sulfate powder, copper sulfate powder, manganese sulfate powder, ferrous sulfate powder, borax powder, ammonium molybdate powder and water, mix the above raw materials, and stir in a high-speed mixer for 40 minutes at a reaction temperature of 90°C, and the speed of the mixer is: 100 rpm to prepare a trace element chelated fertilizer liquid; Weigh polyvinyl alcohol (PVA), common cornstarch, dicyandiamide powder and water according to the mass ratio of 5:5:0.1:69.9, mix the above raw materials, and mix them in a high-speed mixer at a reaction temperature of 90°C. Stir for 40 minutes, the speed of the mixer is: 100 r / min, to prepare the bonding liquid; uniformly mix the trace element chelated fertilizer liquid and the bonding liquid according to the mass ratio of 1:4 to obtain a mixed liquid, and transfer to the air compression In the liquid...

Embodiment 2

[0021] Embodiment 2: according to the mass ratio of 5: 0.01: 0.01: 0.01: 0.01: 0.01: 0.01: 14.94, take respectively citric acid (CIT), zinc sulfate powder, copper sulfate powder, manganese sulfate powder, ferrous sulfate powder, borax Powder, ammonium molybdate powder and water, mix the above raw materials, and stir in a high-speed mixer for 60 minutes at a reaction temperature of 80°C, and the speed of the mixer is: 100 rpm to prepare a trace element chelated fertilizer liquid; Weigh polyvinyl alcohol (PVA), ordinary cornstarch, dicyandiamide powder and water according to the mass ratio of 10:10:0.2:59.8, mix the above raw materials, and mix them in a high-speed mixer at a reaction temperature of 80°C. Stir for 60 minutes, the speed of the mixer is: 100 rev / min, to prepare the bonding liquid; uniformly mix the trace element chelated fertilizer liquid and the bonding liquid according to the mass ratio of 1:4 to obtain a mixed liquid, and transfer it to the air compressor In th...

Embodiment 3

[0022] Embodiment 3: according to the mass ratio of 5: 0.01: 0.01: 0.01: 0.01: 0.01: 0.01: 14.94, take respectively citric acid (CIT), zinc sulfate powder, copper sulfate powder, manganese sulfate powder, ferrous sulfate powder, borax powder, ammonium molybdate powder and water, mix the above raw materials, and stir in a high-speed mixer for 50 minutes at a reaction temperature of 85°C, and the speed of the mixer is: 100 rpm to prepare a trace element chelated fertilizer liquid; Weigh polyvinyl alcohol (PVA), common corn starch, dicyandiamide powder and water according to the mass ratio of 8:8:0.15:63.85, mix the above raw materials, and mix them in a high-speed mixer at a reaction temperature of 85°C. Stir for 50 minutes, the speed of the mixer is: 100 r / min, to prepare the bonding liquid; uniformly mix the trace element chelated fertilizer liquid and the bonding liquid according to the mass ratio of 1:4 to obtain a mixed liquid, and transfer to the air compression In the liq...

1. Technical field

[0001] The invention belongs to the technical field of chemical fertilizers, and in particular relates to a special fertilizer for lawn maintenance and a preparation method thereof. 2. Background technology

[0002] At present, lawn has become an important symbol of urban greening, and the original soil in many cities is covered by lawn grass. Under normal circumstances, turfgrass needs to maintain fixed growth for many years. In addition to applying base fertilizer when building a lawn, topdressing is also required during the growing season of turfgrass. Since turfgrass needs to be trimmed frequently, a large amount of fertilizer is required. The existing fertilizers applied are not sufficient in nutrients and have poor slow-release properties, making it difficult to meet the long-term growth needs of turfgrass.

[0003] Oil shale is a kind of sedimentary rock containing organic matter. The proven resource in my country is 2.4 billion tons. As the world...

Examples

Embodiment 1

[0020] Embodiment 1: according to the mass ratio of 5: 0.01: 0.01: 0.01: 0.01: 0.01: 0.01: 14.94, take respectively citric acid (CIT), zinc sulfate powder, copper sulfate powder, manganese sulfate powder, ferrous sulfate powder, borax powder, ammonium molybdate powder and water, mix the above raw materials, and stir in a high-speed mixer for 40 minutes at a reaction temperature of 90°C, and the speed of the mixer is: 100 rpm to prepare a trace element chelated fertilizer liquid; Weigh polyvinyl alcohol (PVA), common cornstarch, dicyandiamide powder and water according to the mass ratio of 5:5:0.1:69.9, mix the above raw materials, and mix them in a high-speed mixer at a reaction temperature of 90°C. Stir for 40 minutes, the speed of the mixer is: 100 r / min, to prepare the bonding liquid; uniformly mix the trace element chelated fertilizer liquid and the bonding liquid according to the mass ratio of 1:4 to obtain a mixed liquid, and transfer to the air compression In the liquid...

Embodiment 2

[0021] Embodiment 2: according to the mass ratio of 5: 0.01: 0.01: 0.01: 0.01: 0.01: 0.01: 14.94, take respectively citric acid (CIT), zinc sulfate powder, copper sulfate powder, manganese sulfate powder, ferrous sulfate powder, borax Powder, ammonium molybdate powder and water, mix the above raw materials, and stir in a high-speed mixer for 60 minutes at a reaction temperature of 80°C, and the speed of the mixer is: 100 rpm to prepare a trace element chelated fertilizer liquid; Weigh polyvinyl alcohol (PVA), ordinary cornstarch, dicyandiamide powder and water according to the mass ratio of 10:10:0.2:59.8, mix the above raw materials, and mix them in a high-speed mixer at a reaction temperature of 80°C. Stir for 60 minutes, the speed of the mixer is: 100 rev / min, to prepare the bonding liquid; uniformly mix the trace element chelated fertilizer liquid and the bonding liquid according to the mass ratio of 1:4 to obtain a mixed liquid, and transfer it to the air compressor In th...

Embodiment 3

[0022] Embodiment 3: according to the mass ratio of 5: 0.01: 0.01: 0.01: 0.01: 0.01: 0.01: 14.94, take respectively citric acid (CIT), zinc sulfate powder, copper sulfate powder, manganese sulfate powder, ferrous sulfate powder, borax powder, ammonium molybdate powder and water, mix the above raw materials, and stir in a high-speed mixer for 50 minutes at a reaction temperature of 85°C, and the speed of the mixer is: 100 rpm to prepare a trace element chelated fertilizer liquid; Weigh polyvinyl alcohol (PVA), common corn starch, dicyandiamide powder and water according to the mass ratio of 8:8:0.15:63.85, mix the above raw materials, and mix them in a high-speed mixer at a reaction temperature of 85°C. Stir for 50 minutes, the speed of the mixer is: 100 r / min, to prepare the bonding liquid; uniformly mix the trace element chelated fertilizer liquid and the bonding liquid according to the mass ratio of 1:4 to obtain a mixed liquid, and transfer to the air compression In the liq...