CN111606759A - Camellia oleifera slow-control fertilizer and preparation method and application thereof - Google Patents
Camellia oleifera slow-control fertilizer and preparation method and application thereof Download PDFInfo
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- CN111606759A CN111606759A CN202010486361.7A CN202010486361A CN111606759A CN 111606759 A CN111606759 A CN 111606759A CN 202010486361 A CN202010486361 A CN 202010486361A CN 111606759 A CN111606759 A CN 111606759A
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- 239000003337 fertilizer Substances 0.000 title claims abstract description 91
- 241000526900 Camellia oleifera Species 0.000 title claims abstract description 74
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 235000015097 nutrients Nutrition 0.000 claims abstract description 29
- 239000011248 coating agent Substances 0.000 claims abstract description 25
- 238000000576 coating method Methods 0.000 claims abstract description 25
- 241001122767 Theaceae Species 0.000 claims abstract description 14
- 239000002689 soil Substances 0.000 claims abstract description 11
- 229910021538 borax Inorganic materials 0.000 claims abstract description 10
- 239000004328 sodium tetraborate Substances 0.000 claims abstract description 10
- 235000010339 sodium tetraborate Nutrition 0.000 claims abstract description 10
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims abstract description 10
- 229960001763 zinc sulfate Drugs 0.000 claims abstract description 10
- 229910000368 zinc sulfate Inorganic materials 0.000 claims abstract description 10
- 229920005989 resin Polymers 0.000 claims abstract description 8
- 239000011347 resin Substances 0.000 claims abstract description 8
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000004202 carbamide Substances 0.000 claims abstract description 7
- YYRMJZQKEFZXMX-UHFFFAOYSA-L calcium bis(dihydrogenphosphate) Chemical compound [Ca+2].OP(O)([O-])=O.OP(O)([O-])=O YYRMJZQKEFZXMX-UHFFFAOYSA-L 0.000 claims abstract description 6
- 229910000389 calcium phosphate Inorganic materials 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 6
- 235000019691 monocalcium phosphate Nutrition 0.000 claims abstract description 6
- 229910000402 monopotassium phosphate Inorganic materials 0.000 claims abstract description 6
- 235000019796 monopotassium phosphate Nutrition 0.000 claims abstract description 6
- GNSKLFRGEWLPPA-UHFFFAOYSA-M potassium dihydrogen phosphate Chemical compound [K+].OP(O)([O-])=O GNSKLFRGEWLPPA-UHFFFAOYSA-M 0.000 claims abstract description 6
- LWIHDJKSTIGBAC-UHFFFAOYSA-K potassium phosphate Substances [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 claims abstract description 6
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims abstract description 6
- 229910052939 potassium sulfate Inorganic materials 0.000 claims abstract description 6
- 235000011151 potassium sulphates Nutrition 0.000 claims abstract description 6
- 238000013270 controlled release Methods 0.000 claims description 22
- 235000012041 food component Nutrition 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 7
- 239000002952 polymeric resin Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 229920003002 synthetic resin Polymers 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 3
- 238000005469 granulation Methods 0.000 claims description 3
- 230000003179 granulation Effects 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 2
- 238000009792 diffusion process Methods 0.000 abstract description 3
- 235000015816 nutrient absorption Nutrition 0.000 abstract description 3
- 230000004720 fertilization Effects 0.000 description 10
- 239000003921 oil Substances 0.000 description 10
- 239000010495 camellia oil Substances 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 235000013399 edible fruits Nutrition 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000012010 growth Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 229920006037 cross link polymer Polymers 0.000 description 2
- 230000035558 fertility Effects 0.000 description 2
- 235000021022 fresh fruits Nutrition 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 201000004569 Blindness Diseases 0.000 description 1
- 240000001548 Camellia japonica Species 0.000 description 1
- 244000147058 Derris elliptica Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 230000010165 autogamy Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000018597 common camellia Nutrition 0.000 description 1
- 230000002650 habitual effect Effects 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 235000021049 nutrient content Nutrition 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000009105 vegetative growth Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
- C05B1/02—Superphosphates
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C21/00—Methods of fertilising, sowing or planting
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/40—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting fertiliser dosage or release rate; for affecting solubility
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/60—Biocides or preservatives, e.g. disinfectants, pesticides or herbicides; Pest repellants or attractants
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/30—Layered or coated, e.g. dust-preventing coatings
- C05G5/37—Layered or coated, e.g. dust-preventing coatings layered or coated with a polymer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Soil Sciences (AREA)
- Plant Pathology (AREA)
- Environmental Sciences (AREA)
- Fertilizers (AREA)
Abstract
The invention provides a camellia oleifera slow and controlled fertilizer and a preparation method and application thereof, the camellia oleifera slow and controlled fertilizer comprises a nutrient component A and a coating component B coated outside the nutrient component A, wherein the nutrient component A comprises the following components in percentage by mass: 20.4 to 21.6 percent of urea, 9.5 to 10 percent of monopotassium phosphate, 51.4 to 52.3 percent of calcium superphosphate, 14.5 to 15.2 percent of potassium sulfate, 1.1 to 1.3 percent of borax and 1.2 to 1.5 percent of zinc sulfate. According to the invention, the content of each component of the oil tea slow-control fertilizer is controlled, the water-soluble resins are used as coating materials, and the nutrient diffusion rate is controlled by controlling the coating thickness, so that the release amount and the release time of the nutrient components are consistent with the nutrient absorption rule of the oil tea, and the aims of obviously improving the utilization rate of the fertilizer, reducing the fertilizer application amount and effectively protecting the soil environment are achieved.
Description
Technical Field
The invention belongs to the technical field of slow release fertilizers, and particularly relates to a camellia oleifera slow and controlled release fertilizer and a preparation method and application thereof.
Background
The camellia oleifera is a main woody oil tree species in China, and the camellia oleifera has rich nutrition, high economic value and higher commodity and foreign exchange value. The tea-oil tree cultivation area is mainly in mountainous areas, sloping areas and hilly posts, the soil fertility is low in the areas, the conditions of the land are poor, the management level of soil nutrients becomes a main factor for restricting the yield and the quality of the tea-oil tree, the tea-oil tree is vigorous in vegetative growth and high in fruit yield, a large amount of soil nutrients are required to be taken away for forest growth and fruit picking every year, and the requirement for soil self-fertilization can not be met by means of the biological cycle of the tea-oil tree, so that the reasonable cultivation of the land fertility and the scientific balanced fertilization are important measures for ensuring the yield and the quality of the tea-oil tree.
However, in actual production, the fertilization of the camellia oleifera is very blind, the current situation of soil nutrients in an afforestation site is not considered, the specific requirements of the growth of the camellia oleifera on various nutrients are not combined, and compound fertilizers or urea are generally and randomly applied, so that the fertilizer utilization rate is low, the fertilization cost is high, the fertilization effect is poor, and the fertilizer pollution is easily caused.
Disclosure of Invention
The invention aims to solve the problems of blindness in application, high fertilization cost, poor effect and easiness in causing fertilizer pollution of the existing oil tea.
Therefore, the invention provides a camellia oleifera slow-control fertilizer which comprises a nutritional component A and a coating component B coated outside the nutritional component A, wherein the nutritional component A comprises the following components in percentage by mass: 20.4 to 21.6 percent of urea, 9.5 to 10 percent of monopotassium phosphate, 51.4 to 52.3 percent of calcium superphosphate, 14.5 to 15.2 percent of potassium sulfate, 1.1 to 1.3 percent of borax and 1.2 to 1.5 percent of zinc sulfate.
Further, the coating component B is water-soluble resin, and the coating thickness of the coating component B is 0.25-0.27 mm.
Further, the water-soluble resin is a water-based polymer resin or a water-based cross-linked polymer resin.
Further, each 1000kg of camellia oleifera slow-control fertilizer contains N94-100 kg and P2O5108～115kg、K2110-115 kg of O, 11-13 kg of borax and 12-15 kg of zinc sulfate.
Further, the oil tea slow-control fertilizer is granular, and the diameter of the oil tea slow-control fertilizer is 2.5-2.7 mm.
In addition, the invention also provides a preparation method of the camellia oleifera slow and controlled fertilizer, which comprises the following steps:
1) uniformly mixing all the components in the nutrient component A according to the designed dosage, feeding the mixed nutrient component A into a fluidized bed material groove, and blowing hot air to the mixed nutrient component A to enable the nutrient component A in the fluidized bed to rise;
2) spraying the coating component B on the nutrient component A through a high-pressure pump according to the designed dosage, and coating the nutrient component A;
3) carrying out disc granulation on the fertilizer prepared in the step 2) to obtain the camellia oleifera slow-control fertilizer.
Further, the nutrient component A is preheated to 43-45 ℃ by hot air in the step 1).
The invention also provides application of the camellia oleifera slow-control fertilizer, the camellia oleifera slow-control fertilizer adopts a two-side semicircular groove application method, two arc-shaped fertilizing grooves with the depth of 15-20 cm, the width of 20cm and the length of 50-80 cm are dug at projection lines on two sides of a crown, corresponding camellia oleifera slow-control fertilizer is evenly applied, then soil is covered, the fertilizer is applied once all year round, and when the fertilizer is applied in the second year, another two directions are selected for ditching to repeat the fertilizer application operation in the first year.
Further, for the young tea-oil tree forests with the age of 1-3 years, the using amount of the slow controlled-release fertilizer for the tea-oil trees is 25-32.5 kg/mu; for the camellia oleifera forest with the age of 4-7 years, the using amount of the slow controlled-release fertilizer for the camellia oleifera is 30-40 kg/mu; for the camellia oleifera forest with the age of more than 8 years, the slow controlled-release fertilizer consumption of the camellia oleifera is 50-65 kg/mu.
Compared with the prior art, the invention has the beneficial effects that:
(1) the camellia oleifera slow-controlled fertilizer provided by the invention controls the content of each component of the camellia oleifera slow-controlled fertilizer, controls the nutrient diffusion rate by controlling the coating thickness by taking water-soluble resins as coating materials, and ensures that the release amount and the release time of the nutrient components are consistent with the nutrient absorption rule of camellia oleifera, thereby achieving the purposes of obviously improving the fertilizer utilization rate, reducing the fertilizer application amount and effectively protecting the soil environment.
(2) Compared with the traditional fertilizer application, the slow controlled-release fertilizer for the oil tea can effectively improve the fruit setting rate of the oil tea, so that the oil tea yield is improved by more than 30%; compared with the method without fertilization, the yield of the oil tea is improved by 54.8 percent; the economic benefit is considerable; the prepared camellia oleifera slow-control fertilizer particles are uniform in color and luster, stable in nutrient content and release rate, easy to store, package, transport and apply, low in cost and applicable to large-scale camellia oleifera planting.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the embodiment provides a slow and controlled fertilizer for camellia oleifera, which comprises a nutritional component A and a coating component B coated outside the nutritional component A, wherein the nutritional component A comprises the following components in percentage by mass: 21.6 percent of urea, 10 percent of monopotassium phosphate, 51.4 percent of calcium superphosphate, 14.5 percent of potassium sulfate, 1.3 percent of borax and 1.2 percent of zinc sulfate; wherein, the coating component B adopts water-based polymer resin.
The preparation method of the camellia oleifera slow-control fertilizer comprises the following steps: firstly, uniformly mixing 216kg of urea, 100kg of monopotassium phosphate, 514kg of calcium superphosphate, 145kg of potassium sulfate, 13kg of borax and 12kg of zinc sulfate, feeding the mixed fertilizer into a fluidized bed material tank through a feeding system, preheating the mixed fertilizer to 43-45 ℃ by using hot air, and blowing the hot air to lift the fluidized bed granular fertilizer; the water-soluble resin coating component B is sprayed on the granulated fertilizer by a high-pressure pump through a special spray head, and the coating thickness is controlled to be 0.27 mm; and then carrying out disc granulation to obtain the camellia oleifera slow-release controlled-release fertilizer with the particle size of 2.5 mm. Each 1000kg of the camellia oleifera slow-release fertilizer prepared by the embodiment contains 100kg of N (nitrogen) and 100kg of P2O5115kg、K2110kg of O, 13kg of borax and 12kg of zinc sulfate.
In addition, the slow and controlled release fertilizer for the camellia oleifera prepared in the embodiment is dissolved at 25 ℃, and nutrient release rates of the slow and controlled release fertilizer for the camellia oleifera prepared in the embodiment are detected to be 11.35%, 19.43%, 25.41%, 37.06%, 49.92%, 62.13%, 70.46%, 75.18% and 83.5% respectively dissolved and released in 7d, 20d, 30d, 45d, 60d, 90d, 120d, 150d and 180 d. The release period of the camellia oleifera slow-release controlled-release fertilizer can reach 5-6 months, the fertilizer effect can be continued to 10 months in the current year when the fertilizer is applied in the middle and last ten days of 4 months, and therefore the requirement of the camellia oleifera in the vigorous growth period on nutrients can be met.
Example 2:
the embodiment provides a slow and controlled fertilizer for camellia oleifera, which comprises a nutritional component A and a coating component B coated outside the nutritional component A, wherein the nutritional component A comprises the following components in percentage by mass: 20.4% of urea, 9.5% of monopotassium phosphate, 52.3% of calcium superphosphate, 15.2% of potassium sulfate, 1.1% of borax and 1.5% of zinc sulfate; wherein, the coating component B adopts water-based cross-linked polymer resin.
The preparation process of the camellia oleifera slow-release controlled-release fertilizer is the same as that in example 1. In the embodiment, each 1000kg of the camellia oleifera slow-release and controlled-release fertilizer prepared by the embodiment contains 94kg of N (nitrogen) and 94kg of P2O5120kg、K2115kg of O, 11kg of borax and 15kg of zinc sulfate.
Example 3:
the embodiment provides an application method of a camellia oleifera slow-control fertilizer: and (3) excavating two arc fertilizing furrows with the depth of 15-20 cm, the width of 20cm and the length of 50-80 cm at projection lines on two sides of a crown by adopting a two-side semicircular furrow application method, uniformly applying corresponding camellia slow-control fertilizer, then covering soil, and when applying in the second year, excavating furrows in the other two directions to repeat fertilization operation in the first year. The fertilizing period is one-time fertilizing of the slow-control fertilizer of the oil tea all year around, and is preferably from 4 middle to late ten days in the northern marginal production area of the oil tea.
The application amount of the camellia oleifera slow-control fertilizer is closely related to the tree age and the planting density, and for camellia oleifera young forests with the tree age of 1-3 years, the using amount of the camellia oleifera slow-control fertilizer is 25-32.5 kg/mu; for the camellia oleifera forest with the age of 4-7 years, the using amount of the slow controlled-release fertilizer for the camellia oleifera is 30-40 kg/mu; for the camellia oleifera forest with the age of more than 8 years, the slow controlled-release fertilizer consumption of the camellia oleifera is 50-65 kg/mu.
Example 4:
in this example, a fertilizer efficiency test of the slow controlled fertilizer of camellia oleifera was carried out in Huangmei county, Hubei, and the test object is an 8-year-old camellia oleifera forest with a density of 110 plants/mu. The test is divided into three groups A, B, C, wherein the group A applies the camellia oleifera slow-control fertilizer to the camellia oleifera forest according to the application method of the embodiment 2, the group B applies the camellia oleifera forest by using the traditional customary application method (namely applying the compound fertilizer with the specification of 15-15-15 in the middle and late 4 months and the application amount is 65 kg/mu), the group C applies no fertilizer to the camellia oleifera forest by using a blank control, and the influence of different application treatments of the three groups on the yield (fresh fruits) of the camellia oleifera is shown in Table 1.
Table 1: influence of different fertilization treatments on oil tea yield (fresh fruit)
The results in the table 1 show that the yield can be increased by 30.26% by adopting the camellia oleifera slow-release fertilizer compared with the traditional habitual fertilization; compared with a control without fertilization, the yield can be increased by 54.8% by applying the camellia oleifera slow-control fertilizer.
In conclusion, the camellia oleifera slow-control fertilizer provided by the invention controls the content of each component of the camellia oleifera slow-control fertilizer, controls the nutrient diffusion rate by controlling the coating thickness by using water-soluble resins as coating materials, and ensures that the release amount and the release time of the nutrient components are consistent with the nutrient absorption rule of camellia oleifera, thereby achieving the purposes of obviously improving the fertilizer utilization rate, reducing the fertilizer application amount and effectively protecting the soil environment.
The above examples are merely illustrative of the present invention and should not be construed as limiting the scope of the invention, which is intended to be covered by the claims and any design similar or equivalent to the scope of the invention.
Claims (9)
1. The slow and controlled fertilizer for the oil tea is characterized by comprising a nutritional component A and a coating component B coated outside the nutritional component A, wherein the nutritional component A comprises the following components in percentage by mass: 20.4 to 21.6 percent of urea, 9.5 to 10 percent of monopotassium phosphate, 51.4 to 52.3 percent of calcium superphosphate, 14.5 to 15.2 percent of potassium sulfate, 1.1 to 1.3 percent of borax and 1.2 to 1.5 percent of zinc sulfate.
2. The slow and controlled fertilizer for the camellia oleifera as claimed in claim 1, wherein the coating component B is water-soluble resin, and the coating thickness of the coating component B is 0.25-0.27 mm.
3. The slow and controlled release fertilizer for oil tea as claimed in claim 2, wherein the water-soluble resin is water-based polymeric resin or water-based cross-linked polymeric resin.
4. The camellia oleifera slow and controlled fertilizer according to claim 1, wherein each 1000kg of camellia oleifera slow and controlled fertilizer comprises N94-100 kg and P2O5108～115kg、K2110-115 kg of O, 11-13 kg of borax and 12-15 kg of zinc sulfate.
5. The camellia oleifera slow and controlled release fertilizer as claimed in claim 1, wherein the camellia oleifera slow and controlled release fertilizer is granular and has a diameter of 2.5-2.7 mm.
6. The preparation method of the camellia oleifera slow and controlled release fertilizer as claimed in any one of claims 1 to 5, comprising the following steps:
1) uniformly mixing all the components in the nutrient component A according to the designed dosage, feeding the mixed nutrient component A into a fluidized bed material groove, and blowing hot air to the mixed nutrient component A to enable the nutrient component A in the fluidized bed to rise;
2) spraying the coating component B on the nutrient component A through a high-pressure pump according to the designed dosage, and coating the nutrient component A;
3) carrying out disc granulation on the fertilizer prepared in the step 2) to obtain the camellia oleifera slow-control fertilizer.
7. The preparation method of the camellia oleifera slow and controlled release fertilizer as claimed in claim 6, wherein in the step 1), the nutrient component A is preheated to 43-45 ℃ by hot air.
8. The application of the camellia oleifera slow-release fertilizer as claimed in any one of claims 1 to 5, wherein the camellia oleifera slow-release fertilizer is applied by adopting a two-side semicircular groove application method, two arc-shaped fertilizing grooves with the depth of 15-20 cm, the width of 20cm and the length of 50-80 cm are dug at projection lines on two sides of a crown, the corresponding camellia oleifera slow-release fertilizer is evenly applied, then soil is covered, the fertilizer is applied once all year round, and when the fertilizer is applied in the second year, another two directions are selected for digging the groove, and the fertilizer application operation in the first year is repeated.
9. The application of the camellia oleifera slow-release and controlled-release fertilizer as claimed in claim 8, wherein for camellia oleifera young forest with the age of 1-3 years, the dosage of the camellia oleifera slow-release and controlled-release fertilizer is 25-32.5 kg/mu; for the camellia oleifera forest with the age of 4-7 years, the using amount of the slow controlled-release fertilizer for the camellia oleifera is 30-40 kg/mu; for the camellia oleifera forest with the age of more than 8 years, the slow controlled-release fertilizer consumption of the camellia oleifera is 50-65 kg/mu.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2927761A1 (en) * | 2013-10-17 | 2015-04-23 | Agrium Advanced Technologies (U.S.) Inc. | Fertilizer granules having polymeric coating formed with a diol |
| CN105948891A (en) * | 2016-04-28 | 2016-09-21 | 青岛农业大学 | High-efficiency water-retaining blended fertilizer and production method thereof |
| CN106748227A (en) * | 2016-12-30 | 2017-05-31 | 广西南宁益土生物科技有限责任公司 | A kind of slow release fertilizer |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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