CN1169757C - Slow releasing agent of urea - Google Patents
Slow releasing agent of urea Download PDFInfo
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- CN1169757C CN1169757C CNB011103620A CN01110362A CN1169757C CN 1169757 C CN1169757 C CN 1169757C CN B011103620 A CNB011103620 A CN B011103620A CN 01110362 A CN01110362 A CN 01110362A CN 1169757 C CN1169757 C CN 1169757C
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- urea
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Abstract
The present invention relates to urea slow releas agents which mainly comprise the components of borax or boracic acid, stannous chloride dihydrate, sodium bisulfite, ascorbic acid, etc. By using the urea slow releas agents of the present invention, the urea nitrogen supply period is extended to more than 110 days, and the urea utilization rate is enhanced to more than 50 %, so that paddy rice, maize, soybean, celery cabbage, shallot and other crops can be obviously increased in yield.
Description
The present invention relates to slow releasing agent of urea.
Urea is to use maximum nitrogen fertilizers in the world.In most areas, in torrid areas, arid and semi-arid lands and paddy field, the fertilizer efficiency of urea seldom surpasses 50%, generally has only 25-40%.People know, the one of the main reasons of urea fertilizer loss is urea hydrolysis rapidly under the katalysis of soil urease, has caused the accumulation of ammonia and soil pH value to increase, thereby has caused the volatilization loss of ammonia.It is reported that on some acid soil, the volatilization of ammonia accounts for the 4-50% of the blood urea nitrogen amount of using, on alkaline soil, account for 60%, be about 11-60% in the paddy field.
In recent years, carried out extensive studies to suppressing the urase effect both at home and abroad.CN90106467 discloses a kind of nitrogen fertilizer potentiating agent, wherein uses quinhydrones as inhibitor; CN94110132 discloses a kind of durable potentiating agent for nitrogen fertilizer, and this synergistic agent is made up of brown coal, weathered coal or mud coal, Dyhard RU 100 and boron, zinc, molybdenum or manganese salt.This synergistic agent mixes and can use with 0.5-15% ratio and urea or bicarbonate of ammonia, can improve the utilization ratio of chemical fertilizer; CN98114150 discloses a kind of nitrogenous fertilizer long-acting synergist, and it is made up of 10-30% dihydro-amine, 2.5-10% quinhydrones, 25-45% trace element, 0.3-1% rare earth, 35-60% zeolite.This synergistic agent can improve utilization rate of nitrogen fertilizer significantly.As shown in the above, quinhydrones or Dyhard RU 100 are all used in these inventions, although these compounds have good synergism, but, because their cost is very high, particularly since life-time service they, may be to agricultural product quality, physicochemical character and environment to soil produce very bad influence, therefore be difficult to large scale application, so, still need a kind of with low cost at present, to environment do not have the influence synergistic agent, to replace these existing synergistic agent.
Therefore, the object of the present invention is to provide a kind of slow releasing agent of urea, the cost of this slow releasing agent of urea is very low, and what can make urea supplies the nitrogen phase to prolong greatly, and the urea utilization ratio improves greatly, therefore has tangible effect of increasing production.
Slow releasing agent of urea of the present invention reaches in the following manner: in weight part, oxalic acid 5-14 part, borax or boric acid 10-25 part, xitix 5-15 part, potash fertilizer 1-4 part, agricultural rare-earth compound 0.5-1.0 part, tin protochloride 1-9 part, ferrous sulfate 1-5 part, zinc sulfate 1-4 part, sodium bisulfite 1-4 part and the peat composed of rotten mosses and/or flyash 55-75 part stirring and evenly mixing are promptly obtained described product.
Described slow releasing agent of urea is characterized in that this sustained release dosage (in weight part) composed as follows:
Oxalic acid 5-14
Borax or boric acid 10-25
Xitix 5-15
Potash fertilizer 1-4
Agricultural rare-earth compound 0.5-1.0
Tin protochloride 1-9
Ferrous sulfate 1-5
Zinc sulfate 1-4
Sodium bisulfite 1-4
The peat composed of rotten mosses and/or flyash 55-75
Preferably, described slow releasing agent of urea (in weight part) composed as follows:
Oxalic acid 6-14
Borax or boric acid 15-25
Xitix 8-15
Potash fertilizer 1-2
Agricultural rare-earth compound 0.5-0.9
Tin protochloride 5-9
Ferrous sulfate 1-3
Zinc sulfate 1-2
Sodium bisulfite 2-4
The peat composed of rotten mosses and/or flyash 42.5-55
More preferably, described slow releasing agent of urea (in weight part) composed as follows:
Oxalic acid 6-10
Borax or boric acid 16-18
Xitix 10-12
Potash fertilizer 1-2
Agricultural rare-earth compound 0.6-0.9
Tin protochloride 6-9
Ferrous sulfate 2-3
Zinc sulfate 1-2
Sodium bisulfite 2-4
The peat composed of rotten mosses and/or flyash 45-55
Described potash fertilizer is saltpetre, vitriolate of tartar and/or Repone K.
Described agricultural rare-earth compound is rare earth nitrate, rare earth chloride or carbonated rare earth.
But people such as Sor propose borax, boric acid crop urease inhibitor in US3232740, and the urea that contains 4% borax is compared with common urea, and the ammonia loss by volatilization rate is respectively 23% and 43.3% after being manured into soil 20 days.Sor is at US3388989 and " Chem.Abstr. ", and 71,21311h, proposing nucleidic mass in 1968 has restraining effect greater than 50 heavy metal element to urase, but does not spell out tin protochloride.In addition, they do not point out the two is cooperated use.The inventor finds tin protochloride and borax or boric acid are used, and then has mutual enhanced urease inhibiting effect.And borax or boric acid can also provide nutritive element for crop, also have certain germicidal action.
People know that xitix is a kind of antioxidant, and therefore, it can reduce soil micro-ecosystem ambient oxygen content, thereby also can reach the active effect of reduction aerobic bacteria-urase.
Similarly, oxalic acid is a kind of reductive agent, has antioxygenation and denitrification.Also has the effect of regulating solution acid alkalinity in the soil in alkaline soils.
Therefore, xitix and oxalic acid and tin protochloride and borax or boric acid cooperate, and restraining effect is strengthened mutually.Evidence in the described in front content range of these compounds, both can reach best urease inhibiting effect, made its cost low as much as possible again.
Rare earth compound and S-WAT are plant-growth regulator.These compounds have the crop root of promotion grows, and improves the effect of photosynthetic efficiency.The peat composed of rotten mosses and flyash are the porousness sorbent material, also are a kind of carriers.Other composition is a nutritive element.
Described slow releasing agent of urea preparation method is as follows: in weight part, oxalic acid 5-14 part, borax or boric acid 10-25 part, xitix 5-15 part, potash fertilizer 1-4 part, agricultural rare-earth compound 0.5-1.0 part, tin protochloride 1-9 part, ferrous sulfate 1-5 part, zinc sulfate 1-4 part, sodium bisulfite 1-4 part and the peat composed of rotten mosses and/or the abundant stirring and evenly mixing of flyash 55-75 part are promptly obtained above-mentioned product.
Described slow releasing agent of urea using method:, slow releasing agent of urea of the present invention and urea can be mixed the back use according to a certain percentage according to conditions such as crop, soil; Granulated fertilizer also can carry out granulation and obtain granulated fertilizer if desired.
Described slow releasing agent of urea has following positively effect:
1, draws through agricultural fractional analysis and field observation, described slow releasing agent of urea adds urea, after being manured into soil, can make urea prolong about 110 days for the nitrogen phase, the urea utilization ratio is brought up to more than 50%, and does not add the urea (to call control treatment in the following text) of sustained release dosage of the present invention, and it is short for the nitrogen phase, have only 45-60 days, and utilization ratio only is about 30%.
2, continuous 2 years in chernozem and black earth two main soil type areas, respectively farm crop such as paddy rice, corn, soybean, Chinese cabbage, shallot are carried out slow releasing agent of urea application effect field test of the present invention, test-results shows, compare with control treatment, use contains the various crops of the urea of slow releasing agent of urea of the present invention, in seedling stage, vegetative phase performance neat, the advantages such as seedling is strong, dark green leaf color,, well developed root system higher for nitrogen abundance, plant of emerging, wherein this advantage of corn, paddy rice is particularly evident.Compare with the nitrogen fertilizer potentiating agent of market sale, also have certain advantage.
3, produce the result from surveying, compare with control treatment, use the urea that contains slow releasing agent of urea of the present invention, item indexs such as the spike length of crop, 100-grain weight, unit yield all are better than control treatment.Compare increasing production of rice 12-18% with control treatment; Corn 15-17%; Soybean 13-16%; Chinese cabbage 20-24%; Shallot 21-25%.
4, on agricultural application, have tangible saving of labor, province's fertilizer, increasing both production and income, the low advantages such as (lower more than 20%) of production cost than the area synergist of selling on the existing market.Because do not contain deleterious material, therefore, crop and fruit and environment can not polluted.
Below in conjunction with embodiment the present invention will be described in more detail.
Embodiment 1
In weight part, with 6 parts of oxalic acid, 15 parts in xitix, 8 parts of tin protochlorides, 3 parts of sodium bisulfites, 0.5 part of rare earth nitrate, 2 parts in saltpetre, 3 parts of sulfate industry iron, 2 parts in zinc sulfate, 20 parts of boraxs and the peat composed of rotten mosses and 46.5 parts of abundant stirring and evenly mixings of mixture of fly ash (blending ratio is 1: 3), can obtain slow releasing agent of urea of the present invention.
The soil type in experimental plot is a chernozem type rice soil.
Trial crops: rice varieties, 93-8.
The management process of crop is the Routine Management method.
The fertilizer that test is used is: according to mu consumption meter, and 10 kilograms of diammonium phosphate, 15 kilograms in urea, the companion goes into 0.60 kilogram of above-mentioned slow releasing agent of urea in its urea, executes in the experimental plot as base fertilizer is disposable.
The fertilizer that controlled trial is used is: according to mu consumption meter, 10 kilograms of diammonium phosphate, 15 kilograms in urea, urea divided for three phases used, 3.5 kilograms in base fertilizer, behind the slow seedling to dividing preceding 4.5 kilograms of evil; Divide after the evil 3.5 kilograms.
Experimental observation arrives, and uses the fertilizer that slow releasing agent of urea of the present invention is arranged, and period of seedling establishment, branch evil phase, boot stage all shift to an earlier date 1-2 days than control group with the ripening stage.Branch evil phase paddy rice plant height, root length, radical all are better than control group.
Determine that through species test compared with the control, use the fertilizer that slow releasing agent of urea of the present invention is arranged, stimulation ratio reaches 12.9%.
Embodiment 2
In weight part, with 10 parts of oxalic acid, 10 parts in xitix, 9 parts of tin protochlorides, 4 parts of sodium bisulfites, 1 part of rare earth nitrate, 2 parts in saltpetre, 2 parts in ferrous sulfate, 2 parts in zinc sulfate, 15 parts of boraxs and the peat composed of rotten mosses and 55 parts of abundant stirring and evenly mixings of mixture of fly ash (blending ratio is 1: 3), can obtain slow releasing agent of urea of the present invention.
The soil type in experimental plot is a chernozem type rice soil.
Trial crops: rice varieties, 93-8.
The management process of crop is the Routine Management method.
The fertilizer that test is used is: according to mu consumption meter, 10 kilograms of diammonium phosphate, 15 kilograms in urea accompany 0.60 kilogram of above-mentioned slow releasing agent of urea again in its urea, execute in the experimental plot as base fertilizer is disposable.
The fertilizer that controlled trial is used is: according to mu consumption meter, 10 kilograms of diammonium phosphate, 15 kilograms in urea, urea divided for three phases used, 3.5 kilograms in base fertilizer, behind the slow seedling to dividing preceding 4.5 kilograms of evil; Divide after the evil 3.5 kilograms.
Experimental observation arrives, and uses the fertilizer that slow releasing agent of urea of the present invention is arranged, and period of seedling establishment, branch evil phase, boot stage all shift to an earlier date 1-2 days than control group with the ripening stage.Branch evil phase paddy rice plant height, root length, radical all are better than control group.
Determine that through species test compared with the control, use the fertilizer that slow releasing agent of urea of the present invention is arranged, stimulation ratio reaches 12.5%.
Embodiment 3
In weight part, with 14 parts of oxalic acid, 8 parts in xitix, 5 parts of tin protochlorides, 2 parts of sodium bisulfites, 0.5 part of rare earth nitrate, 1 part in saltpetre, 1 part in ferrous sulfate, 1 part in zinc sulfate, 25 parts of boraxs and the peat composed of rotten mosses and 42.5 parts of abundant stirring and evenly mixings of mixture of fly ash (blending ratio is 1: 3), can obtain slow releasing agent of urea of the present invention.
The soil type in experimental plot is a chernozem type rice soil.
Trial crops: rice varieties, 93-8.
The management process of crop is the Routine Management method.
The fertilizer that test is used is: according to mu consumption meter, 10 kilograms of diammonium phosphate, 15 kilograms in urea accompany 0.60 kilogram of above-mentioned slow releasing agent of urea again in its urea, execute in the experimental plot as base fertilizer is disposable.
The fertilizer that controlled trial is used is: according to mu consumption meter, 10 kilograms of diammonium phosphate, 15 kilograms in urea, urea divided for three phases used, 3.5 kilograms in base fertilizer, behind the slow seedling to dividing preceding 4.5 kilograms of evil; Divide after the evil 3.5 kilograms.
Experimental observation arrives, and uses the fertilizer that slow releasing agent of urea of the present invention is arranged, and period of seedling establishment, branch evil phase, boot stage all shift to an earlier date 1-2 days than control group with the ripening stage.Branch evil phase paddy rice plant height, root length, radical all are better than control group.
Determine that through species test compared with the control, use the fertilizer that slow releasing agent of urea of the present invention is arranged, stimulation ratio reaches 2.0%.
Embodiment 4
In weight part, with 6 parts of oxalic acid, 15 parts in xitix, 8 parts of tin protochlorides, 3 parts of sodium bisulfites, 0.5 part of rare earth nitrate, 2 parts in saltpetre, 3 parts in ferrous sulfate, 2 parts in zinc sulfate, 20 parts of boraxs and the peat composed of rotten mosses and 46.5 parts of abundant stirring and evenly mixings of mixture of fly ash (blending ratio is 1: 3), can obtain slow releasing agent of urea of the present invention.
The soil type in experimental plot is the chernozem type.
Trial crops: corn variety, four single 19.
The management process of crop is the Routine Management method.
The fertilizer that test is used is: according to mu consumption meter, 10 kilograms of diammonium phosphate, 15 kilograms in urea accompany 0.45 kilogram of above-mentioned slow releasing agent of urea again in its urea, execute in the experimental plot as base fertilizer is disposable, no longer execute urea thereafter.
The fertilizer that controlled trial is used is: according to mu consumption meter, and 10 kilograms of diammonium phosphate, 15 kilograms in urea, fertilizing method is: diammonium phosphate is manured into soil as base fertilizer, treats plant growth mid-term, and equivalent imposes urea at twice.
Determine that through species test compared with the control, use the fertilizer that slow releasing agent of urea of the present invention is arranged, stimulation ratio reaches 21.1%.
Embodiment 5
In weight part, with 10 parts of oxalic acid, 10 parts in xitix, 9 parts of tin protochlorides, 4 parts of sodium pyrosulfates of industry, 1 part of rare earth nitrate, 2 parts in saltpetre, 2 parts in ferrous sulfate, 2 parts in zinc sulfate, 15 parts of boraxs and the peat composed of rotten mosses and 55 parts of abundant stirring and evenly mixings of mixture of fly ash (blending ratio is 1: 3), can obtain slow releasing agent of urea of the present invention.
The soil type in experimental plot is the chernozem type.
Trial crops: corn variety, four single 19.
The management process of crop is the Routine Management method.
The fertilizer that test is used is: according to mu consumption meter, 10 kilograms of diammonium phosphate, 15 kilograms in urea accompany 0.45 kilogram of above-mentioned slow releasing agent of urea again in its urea, execute in the experimental plot as base fertilizer is disposable, no longer execute urea thereafter.
The fertilizer that controlled trial is used is: according to mu consumption meter, and 10 kilograms of diammonium phosphate, 15 kilograms in urea, fertilizing method is: diammonium phosphate is manured into soil as base fertilizer, treats plant growth mid-term, and equivalent imposes urea at twice.
Determine that through species test compared with the control, use the fertilizer that slow releasing agent of urea of the present invention is arranged, stimulation ratio reaches 15.5%.
Embodiment 6
In weight part, with 14 parts of oxalic acid, 8 parts in xitix, 5 parts of tin protochlorides, 2 parts of sodium bisulfites, 0.5 part of rare earth nitrate, 1 part in saltpetre, 1 part of sulfate industry iron, 1 part in zinc sulfate, 25 parts of boraxs and the peat composed of rotten mosses and 42.5 parts of abundant stirring and evenly mixings of mixture of fly ash (blending ratio is 1: 3), can obtain slow releasing agent of urea of the present invention.
The soil type in experimental plot is the chernozem type.
Trial crops: corn variety, four single 19.
The management process of crop is the Routine Management method.
The fertilizer that test is used is: according to mu consumption meter, 10 kilograms of diammonium phosphate, 15 kilograms in urea accompany 0.45 kilogram of above-mentioned slow releasing agent of urea again in its urea, execute in the experimental plot as base fertilizer is disposable, no longer execute urea thereafter.
The fertilizer that controlled trial is used is: according to mu consumption meter, and 10 kilograms of diammonium phosphate, 15 kilograms in urea, fertilizing method is: diammonium phosphate is manured into soil as base fertilizer, treats plant growth mid-term, and equivalent imposes urea at twice.
Determine that through species test compared with the control, use the fertilizer that slow releasing agent of urea of the present invention is arranged, stimulation ratio reaches 6.0%.
Embodiment 7
In weight part, with 5 parts of oxalic acid, 5 parts in xitix, 9 parts of tin protochlorides, 1 part of sodium bisulfite, 1 part of rare earth nitrate, 2 parts in saltpetre, 2 parts in ferrous sulfate, 4 parts in zinc sulfate, 10 parts of boraxs and the peat composed of rotten mosses and 61 parts of abundant stirring and evenly mixings of mixture of fly ash (blending ratio is 1: 3), can obtain slow releasing agent of urea of the present invention.
The soil type in experimental plot is the chernozem type.
Trial crops: corn variety, four single 19.
The management process of crop is the Routine Management method.
The fertilizer that test is used is: according to mu consumption meter, 10 kilograms of diammonium phosphate, 15 kilograms in urea accompany 0.45 kilogram of above-mentioned slow releasing agent of urea again in its urea, execute in the experimental plot as base fertilizer is disposable, no longer execute urea thereafter.
The fertilizer that controlled trial is used is: according to mu consumption meter, and 10 kilograms of diammonium phosphate, 15 kilograms in urea, fertilizing method is: diammonium phosphate is manured into soil as base fertilizer, treats plant growth mid-term, and equivalent imposes urea at twice.
Determine that through species test compared with the control, use the fertilizer that slow releasing agent of urea of the present invention is arranged, stimulation ratio reaches 14.1%.
Claims (5)
1, a kind of slow releasing agent of urea is characterized in that this sustained release dosage is composed as follows, in weight part:
Oxalic acid 5-14
Borax or boric acid 10-25
Xitix 5-15
Potash fertilizer 1-4
Agricultural rare-earth compound 0.5-1.0
Tin protochloride 1-9
Ferrous sulfate 1-5
Zinc sulfate 1-4
Sodium bisulfite 1-4
The peat composed of rotten mosses and flyash are with the mixture 42.5-61 of 1: 3 mixed.
2, slow releasing agent of urea according to claim 1 is characterized in that this sustained release dosage is composed as follows, in weight part.
Oxalic acid 6-14
Borax or boric acid 15-25
Xitix 8-15
Potash fertilizer 1-2
Agricultural rare-earth compound 0.5-0.9
Tin protochloride 5-9
Ferrous sulfate 1-3
Zinc sulfate 1-2
Sodium bisulfite 2-4
The peat composed of rotten mosses and flyash are with the mixture 42.5-55 of 1: 3 mixed.
3, slow releasing agent of urea according to claim 1 is characterized in that this sustained release dosage is composed as follows, in weight part:
Oxalic acid 6-10
Borax or boric acid 16-18
Xitix 10-12
Potash fertilizer 1-2
Agricultural rare-earth compound 0.6-0.9
Tin protochloride 6-9
Ferrous sulfate 2-3
Zinc sulfate 1-2
Sodium bisulfite 2-4
The peat composed of rotten mosses and flyash are with the mixture 45-55 of 1: 3 mixed.
4,, it is characterized in that described potash fertilizer is saltpetre, vitriolate of tartar and/or Repone K according to the described slow releasing agent of urea of arbitrary claim among the claim 1-3.
5,, it is characterized in that described agricultural rare-earth compound is rare earth nitrate, rare earth chloride or carbonated rare earth according to the described slow releasing agent of urea of arbitrary claim among the claim 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011103620A CN1169757C (en) | 2001-04-09 | 2001-04-09 | Slow releasing agent of urea |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011103620A CN1169757C (en) | 2001-04-09 | 2001-04-09 | Slow releasing agent of urea |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1379002A CN1379002A (en) | 2002-11-13 |
| CN1169757C true CN1169757C (en) | 2004-10-06 |
Family
ID=4658539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011103620A Expired - Fee Related CN1169757C (en) | 2001-04-09 | 2001-04-09 | Slow releasing agent of urea |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1169757C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100358844C (en) * | 2003-06-20 | 2008-01-02 | 北京盛丰特科技发展有限公司 | Fertilizer for medium and low output field |
| CN104446675B (en) * | 2014-11-10 | 2016-11-09 | 成都新柯力化工科技有限公司 | A kind of high molecular polymer slow-release nitrogen fertilizer and preparation method thereof |
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2001
- 2001-04-09 CN CNB011103620A patent/CN1169757C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1379002A (en) | 2002-11-13 |
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