CN105461467A - Fertilizer special for spring corn in Weibei region - Google Patents
Fertilizer special for spring corn in Weibei region Download PDFInfo
- Publication number
- CN105461467A CN105461467A CN201610068634.XA CN201610068634A CN105461467A CN 105461467 A CN105461467 A CN 105461467A CN 201610068634 A CN201610068634 A CN 201610068634A CN 105461467 A CN105461467 A CN 105461467A
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- special fertilizer
- wei
- potassium
- spring maize
- phosphorus
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- 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
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a fertilizer special for spring corn in a Weibei region. The weight ratio of nitrogen to phosphorus to potassium in the special fertilizer is (22-25):(7-13):(3-6), and preferably, the weight ratio of nitrogen to phosphorus to potassium in the special fertilizer is 22:10:4 or 25:10:5. Nitrogen is derived from urea, phosphorus is derived from diammonium phosphate, and potassium is derived from potassium sulphate. The special fertilizer further comprises filler such as at least one of bentonite, argil, kaolin, kieselguhr and fluorite capable of being accepted in the field. The special fertilizer is easy to apply and suitable for the soil property in the Weibei region, the corn yield and economic benefits can be obviously increased, and use and popularization value is achieved.
Description
Technical field
The invention belongs to technical field of agricultural fertilizers, be specifically related to a kind of Wei and Lo river spring maize special fertilizer.
Background technology
Spring maize is one of north, Weihe staple food crop, and the grain acreage with 1/3 produces the grain yield of 1/2.In the increase of spring maize ultimate production for many years, per unit area yield contribution volume accounts for 89.66%, and area is 33.24%, and namely the increase of spring maize ultimate production mainly relies on per unit area yield to realize.The unit yield how continuing to improve corn has become the key of north, Weihe grain security, is also the basis that Wei Bei develops aquaculture, the guarantee in north mainstay industry, Weihe (apple) of running business into strong one especially.North, Weihe spring maize production level is compared with the highest production level in locality with the province of the equal working condition in the whole nation, also has larger gap, precipitation is on the low side, soil is barren is the important restriction factor having a strong impact on the raising of corn per unit area yield, but the non-irrigated plateau in north, Weihe possesses the advantageous natural condition of corn growth such as soil layer is deep, sunlight-heat reaources is abundant.Combine in recent years and implement fertilization compositions based on earth measurement central authorities subsidy project, High-yields of Spring Maize creates project, spring maize promotes action etc., successively cultivate the efficient model field of a large amount of corn with high yield, obtain the model household of a large amount of per mu yield more than 900 kilograms, for north, Weihe High-yields of Spring Maize has carried out useful exploration and practice.
The medium-term and long-term problem that there is blindly fertilising, partially nitrogen fertilizer application produced by north, Weihe spring maize, reduce that fertilizer efficiency, peasant's labor of fertilizer application intensity are large, peasant oneself can not join the shortcomings such as fertile for overcoming between the fertile element of spring maize directly mixing, promote a kind of use simple, the corn fertilizer meeting Wei and Lo river soil characteristic and climatic characteristic is extremely urgent, is the task of top priority.
Summary of the invention
Be not applicable to the corn fertilizer of soil materials for current Wei and Lo river, solve the universal phenomenon of people's blindly fertilising, partially nitrogen fertilizer application, the present invention proposes a kind of Wei and Lo river spring maize special fertilizer.
The present invention realizes especially by following technical scheme;
A kind of Wei and Lo river spring maize special fertilizer, in described special fertilizer, the weight ratio of nitrogen, phosphorus, potassium is 22 ~ 25:7 ~ 13:3 ~ 6.
Preferably, a kind of Wei and Lo river spring maize special fertilizer, in described special fertilizer, the weight ratio of nitrogen, phosphorus, potassium is 22:10:4.
Preferably, a kind of Wei and Lo river spring maize special fertilizer, in described special fertilizer, the weight ratio of nitrogen, phosphorus, potassium is 25:10:5.
Described spring maize special fertilizer also comprises micro-zinc sulfate 1.0-2.0%.
Nitrogen source of the present invention is in urea, and phosphorus derives from diammonium phosphate, and potassium derives from potassium sulfate.
Also comprise this area in described special fertilizer and can accept filler, as at least one in wilkinite, potter's clay, kaolin, diatomite or fluorite.
It is 36% ~ 40% that nitrogen in special fertilizer of the present invention, phosphorus, potassium total amount account for total fertilizer quality per-cent.
Spring maize special fertilizer of the present invention is prepared by the following method: by each component precrushing, carry out fragmentation after being uniformly mixed, then carry out drum granulating, cools, sieve after drying kiln drying granulating, obtains Wei and Lo river spring maize special fertilizer.
The special fat plantation that can be applicable to spring maize of described spring maize; It can improve corn plant height, strengthens the growth of maize root system, also can improve the lodging tolerance of corn simultaneously.
Beneficial effect of the present invention is:
The present invention studies the special fertilizer of applicable Wei and Lo river corn, in conjunction with the characteristic of local soil, a kind of Wei and Lo river spring maize special fertilizer of special proposition and fertilizing method thereof, by special fertilizer of the present invention and fertilizing method, the experiment proved that, north, Weihe spring maize on average increases production 31%; Utilization rate of nitrogen fertilizer improves 44.6%, and phosphate fertilizer utilization efficiency improves 17.5%, and in soil, available nitrogen improves 11.4%, and rapid available phosphorus improves 29.6%, on average saves chemical fertilizer for every mu and invests more than 50 yuan, per muly increases both production and value more than 30 yuan, shows excellent economic benefit.
Embodiment
Below in conjunction with embodiment, the present invention is described further, the following stated, only to preferred embodiment of the present invention, not do other forms of restriction to the present invention, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed to the Equivalent embodiments of equal change.Everyly do not depart from the present invention program's content, any simple modification done following examples according to technical spirit of the present invention or equivalent variations, all drop in protection scope of the present invention.
The invention provides a kind of Wei and Lo river spring maize special fertilizer, in described special fertilizer, the weight ratio of nitrogen, phosphorus, potassium is 22 ~ 25:7 ~ 13:3 ~ 6.Additional micro-zinc sulfate 1.0-2.0%.
Preferably, a kind of Wei and Lo river spring maize special fertilizer, in described special fertilizer, the weight ratio of nitrogen, phosphorus, potassium is 22:10:4.Additional micro-zinc sulfate 1.0-2.0%.
Preferably, a kind of Wei and Lo river spring maize special fertilizer, in described special fertilizer, the weight ratio of nitrogen, phosphorus, potassium is 25:10:5.Additional micro-zinc sulfate 1.0-2.0%.
Nitrogen source of the present invention is in urea, and phosphorus derives from diammonium phosphate, and potassium derives from potassium sulfate.
Also comprise this area in described special fertilizer and can accept filler, as at least one in wilkinite, potter's clay, kaolin, diatomite or fluorite.
It is 36% ~ 40% that nitrogen in special fertilizer of the present invention, phosphorus, potassium total amount account for total fertilizer quality per-cent.
Corn fertilizer of the present invention is not containing urea.
Spring maize special fertilizer of the present invention is prepared by the following method: by each component precrushing, carry out fragmentation after being uniformly mixed, then carry out drum granulating, cools, sieve after drying kiln drying granulating, obtains Wei and Lo river spring maize special fertilizer.
The special fat plantation that can be applicable to spring maize of described spring maize; It can improve corn plant height, strengthens the growth of maize root system, also can improve the lodging tolerance of corn simultaneously.
The concrete scheme of special fertilizer of the present invention is:
Nan Yuan district: the corn fertilizer of content 40% one bag, the recipe ratio of this special fertilizer nitrogen, phosphorus, potassium is 25:10:5, and join 30 jin, urea for every hundred jin, diammonium phosphate 21 jin, potassium sulfate 10 jin, 39 jin, ammonium sulfate mixes.Impose 40 ~ 80 jin, urea again in the Spring-maize Growth critical period, just can meet the needs of the whole breeding time of per mu yield 800 kilograms.
Bei Yuan district: the corn fertilizer of content 36% one bag, the recipe ratio of this special fertilizer nitrogen, phosphorus, potassium is 22:10:4, and join 29 jin, urea for every hundred jin, diammonium phosphate 21 jin, potassium sulfate 8 jin, 42 jin, ammonium sulfate mixes.Impose 40 ~ 80 jin, urea again in the Spring-maize Growth critical period, just can meet the needs of the whole breeding time of per mu yield 750 kilograms.
Embodiment 1
The compound method of Wei and Lo river spring maize special fertilizer: adopt rotary drum steam granulation processing method to make, by nitrogen, phosphorus, the weight ratio of potassium is 22:10:4, by urea, diammonium phosphate, potassium sulfate and diatomite precrushing respectively, then be uniformly mixed, be broken into powdery again, the zinc sulfate of additional fertilizer total amount 1%, by mixed component drum granulating, its granulation process and condition are: add steam at rotary drum, start reunion with the powder of each simple substance fertilizer of mixing to be advisable, the powder of roughly reuniting is dried by belt input drying kiln, control drying kiln temperature at 140 DEG C, powder further granulating drying in drying kiln, cool through cooling kiln, after crossing 5 mesh sieves, finished product is packed, excessive or too small particle returns rear further from new granulation.In this special fertilizer, the total amount of nitrogen, phosphorus, potassium accounts for total amount 36%.
Embodiment 2
The compound method of Wei and Lo river spring maize special fertilizer: adopt rotary drum steam granulation processing method to make, by nitrogen, phosphorus, the weight ratio of potassium is 25:10:5, by urea, diammonium phosphate, potassium sulfate and wilkinite precrushing respectively, then be uniformly mixed, be broken into powdery again, the zinc sulfate of additional fertilizer total amount 2%, by mixed component drum granulating, its granulation process and condition are: add steam at rotary drum, start reunion with the powder of each simple substance fertilizer of mixing to be advisable, the powder of roughly reuniting is dried by belt input drying kiln, control drying kiln temperature at 140 DEG C, powder further granulating drying in drying kiln, cool through cooling kiln, after crossing 5 mesh sieves, finished product is packed, excessive or too small particle returns rear further from new granulation.In this special fertilizer, the total amount of nitrogen, phosphorus, potassium accounts for total amount 40%.
Embodiment 3
The compound method of Wei and Lo river spring maize special fertilizer: adopt rotary drum steam granulation processing method to make, by nitrogen, phosphorus, the weight ratio of potassium is 23:10:5, by urea, diammonium phosphate, potassium sulfate and diatomite precrushing respectively, then be uniformly mixed, be broken into powdery again, the zinc sulfate of additional fertilizer total amount 1%, by mixed component drum granulating, its granulation process and condition are: add steam at rotary drum, start reunion with the powder of each simple substance fertilizer of mixing to be advisable, the powder of roughly reuniting is dried by belt input drying kiln, control drying kiln temperature at 140 DEG C, powder further granulating drying in drying kiln, cool through cooling kiln, after crossing 5 mesh sieves, finished product is packed, excessive or too small particle returns rear further from new granulation.In this special fertilizer, the total amount of nitrogen, phosphorus, potassium accounts for total amount 38%.
Below the practical application effect of Wei and Lo river spring maize special fertilizer of the present invention is described further.
Embodiment 4 fertilizer efficiency is tested
1, this experimental establishment is in Wei Beihanyuan district-Xunyi County, Xianyang, uses special fertilizer 60 pounds/acre when corn seeding, and imposes 40 ~ 80 jin, urea in the Miho phase of corn.Experimental group selects the special fertilizer prepared by the embodiment of the present invention 1 ~ 3, and control group does not adopt any process.
Record experimental group and control group output respectively, amount to into 667 square metres of output, calculate units increased in production and stimulation ratio.The results are shown in Table 1.
Table 1
| Grouping | Output kg/ mu | Stimulation ratio (relative comparison group) |
| Embodiment 1 | 1120.83 | 46％ |
| Embodiment 2 | 1105.72 | 44.06％ |
| Embodiment 3 | 1035.46 | 34.94％ |
| Control group | 767.63 | — |
The special fertilizer of the embodiment of the present invention 1 ~ 3 compares with reference examples, illustrates that, when consumption differs greatly, the embodiment of the present invention has obvious production-increasing function to corn growth, illustrates that technical solution of the present invention creates effect beyong contemplation.
Record experimental group and control group corn lodging rate respectively, the results are shown in Table 2.
Table 2
The special fertilizer of the embodiment of the present invention 1 ~ 3 compares with reference examples, illustrates when consumption differs greatly, and the embodiment of the present invention has obvious anti-fall effect to corn growth, illustrates that technical solution of the present invention creates effect beyong contemplation.
2, this experimental establishment is in Wei Beihanyuan district-Xianyang Changwu County, uses special fertilizer 55 pounds/acre when corn seeding, and imposes 40 ~ 80 jin, urea in the Miho phase of corn.Experimental group selects the special fertilizer prepared by the embodiment of the present invention 1 ~ 3, and control group does not adopt any process.
Record experimental group and control group output respectively, amount to into 667 square metres of output, calculate units increased in production and stimulation ratio.The results are shown in Table 3.
Table 3
| Grouping | Output kg/ mu | Stimulation ratio (relative comparison group) |
| Embodiment 1 | 1243.25 | 65.29％ |
| Embodiment 2 | 1256.61 | 67.02％ |
| Embodiment 3 | 1084.35 | 44.14％ |
| Control group | 752.37 | — |
The special fertilizer of the embodiment of the present invention 1 ~ 3 compares with reference examples, illustrates that, when consumption differs greatly, the embodiment of the present invention has obvious production-increasing function to corn growth, illustrates that technical solution of the present invention creates effect beyong contemplation.
Record experimental group and control group corn lodging rate respectively, the results are shown in Table 4.
Table 4
| Grouping | Lodging strain/20m 2 | Lodging rate (%) |
| Embodiment 1 | 0 | 0 |
| Embodiment 2 | 0 | 0 |
| Embodiment 3 | 3 | 3.58 |
| Control group | 41 | 43.16 |
The special fertilizer of the embodiment of the present invention 1 ~ 3 compares with reference examples, illustrates when consumption differs greatly, and the embodiment of the present invention has obvious anti-fall effect to corn growth, illustrates that technical solution of the present invention creates effect beyong contemplation.
Claims (8)
1. a Wei and Lo river spring maize special fertilizer, is characterized in that: in described special fertilizer, the weight ratio of nitrogen, phosphorus, potassium is 22 ~ 25:7 ~ 13:3 ~ 6.
2. a kind of Wei and Lo river spring maize special fertilizer according to claim 1, is characterized in that: in described special fertilizer, the weight ratio of nitrogen, phosphorus, potassium is 22:10:4.
3. a kind of Wei and Lo river spring maize special fertilizer according to claim 1, is characterized in that: in described special fertilizer, the weight ratio of nitrogen, phosphorus, potassium is 25:10:5.
4. a kind of Wei and Lo river spring maize special fertilizer according to any one of claims 1 to 3, is characterized in that: described spring maize special fertilizer also comprises micro-zinc sulfate 1.0-2.0%.
5. a kind of Wei and Lo river spring maize special fertilizer according to any one of claims 1 to 3, is characterized in that: described nitrogen source is in urea, and phosphorus derives from diammonium phosphate, and potassium derives from potassium sulfate.
6. a kind of Wei and Lo river spring maize special fertilizer according to any one of claims 1 to 3, is characterized in that: also comprising this area in described special fertilizer can accept filler, as at least one in wilkinite, potter's clay, kaolin, diatomite or fluorite.
7. a kind of Wei and Lo river spring maize special fertilizer according to any one of claims 1 to 3, is characterized in that: it is 36% ~ 40% that nitrogen in described special fertilizer, phosphorus, potassium total amount account for total fertilizer quality per-cent.
8. a kind of Wei and Lo river spring maize special fertilizer according to any one of claims 1 to 3, is characterized in that: by each component precrushing, carry out fragmentation after being uniformly mixed, then drum granulating is carried out, cool after drying kiln drying granulating, sieve, obtain Wei and Lo river spring maize special fertilizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610068634.XA CN105461467A (en) | 2016-02-01 | 2016-02-01 | Fertilizer special for spring corn in Weibei region |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610068634.XA CN105461467A (en) | 2016-02-01 | 2016-02-01 | Fertilizer special for spring corn in Weibei region |
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| CN105461467A true CN105461467A (en) | 2016-04-06 |
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| CN201610068634.XA Pending CN105461467A (en) | 2016-02-01 | 2016-02-01 | Fertilizer special for spring corn in Weibei region |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109496730A (en) * | 2018-12-24 | 2019-03-22 | 吉林农业大学 | A kind of fertilizer and fertilizing method of Central Jilin spring maize single fertilization |
| CN109534894A (en) * | 2018-11-29 | 2019-03-29 | 吉林农业大学 | A kind of the spring maize formula fertilizer special and its method of administration of suitable West Area of Jilin Province |
| CN113501739A (en) * | 2021-07-15 | 2021-10-15 | 广西壮族自治区农业科学院 | Organic matter improved soil water-saving drought-resistant nitrogen fixation fertilizer and preparation method thereof |
| CN114804959A (en) * | 2022-05-25 | 2022-07-29 | 山东省农业科学院 | Preparation method of compound fertilizer with water retention and fertilizer retention functions |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1154956A (en) * | 1996-10-12 | 1997-07-23 | 鲍继武 | Three-effect series special fertilizer |
| CN1210842A (en) * | 1996-01-30 | 1999-03-17 | 铁岭市德兴专用肥厂 | Long active special rice fertilizer and its preparing method |
| CN1376655A (en) * | 2002-04-19 | 2002-10-30 | 赵启良 | Efficient compound fertilizer |
| CN101066901A (en) * | 2007-04-03 | 2007-11-07 | 张国忠 | Soline alkali resisting rice fertilizer |
| CN101462911A (en) * | 2007-12-21 | 2009-06-24 | 中国科学院沈阳应用生态研究所 | Special moisture preservation compound fertilizer for maize in arid and semi-arid area and preparation thereof |
| CN101759471A (en) * | 2008-12-16 | 2010-06-30 | 吴鲁智 | Formula fertilizer with total nutrient of nitrogen, phosphorus and potassium being 40% |
-
2016
- 2016-02-01 CN CN201610068634.XA patent/CN105461467A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1210842A (en) * | 1996-01-30 | 1999-03-17 | 铁岭市德兴专用肥厂 | Long active special rice fertilizer and its preparing method |
| CN1154956A (en) * | 1996-10-12 | 1997-07-23 | 鲍继武 | Three-effect series special fertilizer |
| CN1376655A (en) * | 2002-04-19 | 2002-10-30 | 赵启良 | Efficient compound fertilizer |
| CN101066901A (en) * | 2007-04-03 | 2007-11-07 | 张国忠 | Soline alkali resisting rice fertilizer |
| CN101462911A (en) * | 2007-12-21 | 2009-06-24 | 中国科学院沈阳应用生态研究所 | Special moisture preservation compound fertilizer for maize in arid and semi-arid area and preparation thereof |
| CN101759471A (en) * | 2008-12-16 | 2010-06-30 | 吴鲁智 | Formula fertilizer with total nutrient of nitrogen, phosphorus and potassium being 40% |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109534894A (en) * | 2018-11-29 | 2019-03-29 | 吉林农业大学 | A kind of the spring maize formula fertilizer special and its method of administration of suitable West Area of Jilin Province |
| CN109496730A (en) * | 2018-12-24 | 2019-03-22 | 吉林农业大学 | A kind of fertilizer and fertilizing method of Central Jilin spring maize single fertilization |
| CN113501739A (en) * | 2021-07-15 | 2021-10-15 | 广西壮族自治区农业科学院 | Organic matter improved soil water-saving drought-resistant nitrogen fixation fertilizer and preparation method thereof |
| CN114804959A (en) * | 2022-05-25 | 2022-07-29 | 山东省农业科学院 | Preparation method of compound fertilizer with water retention and fertilizer retention functions |
| WO2023226911A1 (en) * | 2022-05-25 | 2023-11-30 | 山东省农业科学院 | Preparation method for compound fertilizer having water retention and nutrient retention functions |
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Application publication date: 20160406 |
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