CN102150502A - Method for efficiently and accurately spreading slow/controlled release nitrogen fertilizer for wheat - Google Patents
Method for efficiently and accurately spreading slow/controlled release nitrogen fertilizer for wheat Download PDFInfo
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Abstract
The invention relates to a method for efficiently and accurately spreading slow/controlled release nitrogen fertilizer for wheat. The slow/controlled release nitrogen fertilizer with a controlled release period of 3-4 months is selected, the spreading depth of the slow/controlled release nitrogen fertilizer is 11-16cm, the horizontal distance from the slow/controlled release nitrogen fertilizer to wheat seeds is 0-9cm; the 0cm means that the slow/controlled release nitrogen fertilizer is spread right under the wheat seeds; measured by pure nitrogen nutrient, the spreading amount of the slow/controlled release nitrogen fertilizer is 6-14kg/mu; and all the slow/controlled release nitrogen fertilizer is completely spread in the wheat seeding period. By utilizing the method provided by the invention for spreading fertilizer, the utilization ratio of the slow/controlled release nitrogen fertilizer is increased, the spreading amount of the slow/controlled release nitrogen fertilizer is reduced, and the yield of wheat is increased.
Description
Technical field
The present invention relates to a kind of slow/controlled release nitrogen fertilizer applying method, the application process of particularly a kind of slow/controlled release nitrogenous fertilizer on winter wheat belongs to the fertile applied technical field of controlled release.
Background technology
The nitrogen fertilizer applying method of wheat planting generally adopts base manure and the fertilizing method that topdresses and combine, and base manure is to use before wheat cultivation, and method commonly used is to revolve to be spread on rotary tillage behind the soil surface before the ground; Topdressing is to use in wheat growth, spreads fertilizer over the fields before most employings are watered, and also can in the ranks ditch at wheat and use.
CN101803514A (CN200910254609.0) provides winter wheat ridge, a kind of nonirrigated farmland to cover trench sowing cultivation and fertilizer practice, at wheat seedbed preparation basal dressing, execute nitrogen (purity nitrogen) 120-150 kilogram/hectare, phosphorus (P2O5) 90-120 kilogram/hectare, potassium (K2O) 60-75 kilogram/hectare; Ridging after site preparation and fertilization is finished covers the white plastic film on the ridge; Two distance between the ridges are ditch bandwidth reservation 30-35cm; In ditch, sow wheat, in the time of infertility of wheat growth, do not take off film, keep soil surface ribbon film to cover; Spring soil begin to thaw, before wheat begins to turn green, in the ranks ditching in wheat imposes nitrogenous fertilizer 30-45 kilogram/hectare, in time harrows a kind of farm tools after topdressing.
Recent years, the technical research and the industrialized development of China's slowly/controlled releasing fertilizer are swift and violent, though development time is shorter, but technical research is obtained very fast progress, and numerous technologies reach or surpass the advanced world level, and production cost significantly reduces than external like product, add that constantly succeeding in developing of crop special-purpose control-release fertilizer more makes the cost of controlled release fertilizer further descend, fertilizer efficiency improves, and controlled release fertilizer is applied to field crop and becomes a reality, and welcome by the peasant.Wheat is the staple food crop of China, also is the highest crop of mechanization degree, and slow/controlled release nitrogenous fertilizer has not " burning " seed, not drip washing loss, advantages such as plant recovery of nutrient height can also utilize machinery with wheat cultivation, disposable the finishing of fertilising, save labour cost.CN101182260A (CN200710114006.1) discloses a kind of " sulphur, resin film coated wheat special-purpose control-release fertilizer and manufacture method thereof ", regulation of fertilizer requirement according to wheat, 5%, 6% and 7% thermoplastic resin membrane wrapping urea, sulfur coating urea and potassium chloride composite fertilizer, potassium chloride, diammonium phosphate and zinc sulphate are carried out accurately composite, form wheat proprietary formula controlled release fertilizer.201010136254.8 disclose a kind of synchronous nutrient wheat special controlled release fertilizer and preparation method thereof, utilize the double-deck coated carbamide, double-deck coating potassium nitrate, double-deck coating diammonium phosphate and potassium chloride composite fertilizer, the zinc sulphate that reclaim waste thermoplastic resin and thermosetting resin preparation to carry out composite, the nutrient of the wheat special controlled release fertilizer that makes in soil discharges with wheat and absorbs synchronously, is applicable to that machinery uses and seed is not had harm.Compare with the fertile technology of preparing of controlled release, its fertilizing method research is backward relatively, has seriously restricted the performance of the fat effect of controlled release.
In slowly/controlled releasing fertilizer, slow/controlled release nitrogenous fertilizer is main body.Compare with common instant nitrogenousfertilizer, the performance of slow/controlled release fertilizer effectiveness and fertilizing method relation are more close, and the potentiality that fertilizer efficiency improves are also bigger.At first, the controlled release phase of selected slow/controlled release nitrogenous fertilizer is the key that slow/controlled release nitrogenous fertilizer is rationally used.The controlled release phase is too short, and nutrient discharges too fast, and the easy fertilizer deficiency early ageing of wheat later stage influences output; The controlled release phase is long, discharges not exclusively at wheat growth fertilizer nutrient in season, and not only availability reduces, and also can influence wheat growth, reduces output.Secondly, fertilization depth is another factor that influences the slow/controlled release fertilizer effectiveness.Slow/controlled release nitrogenous fertilizer discharges the nutrient requirement moisture condition in soil, in the soil water-containing weight range of wheat normal growth, and different soil depth water content differences, the nutrient release rate of slow/controlled release nitrogenous fertilizer is also different.Moreover, instant nitrogenousfertilizer dissolves in soil soon, too closely is easy to generate fertilizer damage apart from seed or root system, and slow/controlled release nitrogenous fertilizer has then overcome this deficiency, therefore can be more closely when applying fertilizer from seed, but how many competence exertion best effects also to be to improve the importance of slow/controlled release nitrogenous fertilizer utilization ratio apart from.At present, slow/controlled release nitrogenous fertilizer application facet be badly in need of a kind of rationally, fertilizing method efficiently, to improve the utilization ratio of slow/controlled release nitrogenous fertilizer, reduce the wasting of resources, promote the particularly sound development of slow/controlled release nitrogenous fertilizer of controlled release fertilizer.Regrettably yet there are no the report of this respect.
Summary of the invention
At the deficiencies in the prior art, the invention provides a kind of precisely, wheat slow/controlled release nitrogen fertilizing method efficiently, to promote to improve the utilization ratio of slow/controlled release nitrogenous fertilizer on wheat, increase wheat yield.
Summary of the invention
The present invention from fertilizer control release phase length, fertilization depth, fertilizer from aspect comprehensive considerations such as the distance of seed, fertilizer amount, fertilization times, the accurate fertilizing method of a kind of slow/controlled release nitrogenous fertilizer on wheat planting is provided, and carried out field experiment, the result shows, utilize this method to apply fertilizer, the slow/controlled release utilization rate of nitrogen fertilizer obviously improves, and wheat yield increases.
The term explanation:
Slow/controlled release nitrogenous fertilizer of the present invention is meant the slow/controlled release nitrogenous fertilizer that meets China's slow-release or control-release fertilizer industry standard (HG/T3931-2007, on October 1st, 2007 implemented).
The controlled release phase of described slow/controlled release nitrogenous fertilizer was meant according to the obtained controlled release phase of detection method in China's slow-release or control-release fertilizer industry standard (HG/T3931-2007, on October 1st, 2007 implemented).
Described fertilization depth is meant the distance of fertilizer from soil surface.
The wheat seed degree of depth generally is from 3～5 centimetres of soil surfaces.
Detailed Description Of The Invention
The fertilizing method of one grow wheat slow/controlled release nitrogenous fertilizer, selecting the controlled release phase for use is 3～4 months slow/controlled release nitrogenous fertilizer; All disposable employed when wheat cultivation; The fertilization depth of slow/controlled release nitrogenous fertilizer is 11～16 centimetres; The horizontal range of slow/controlled release nitrogenous fertilizer and wheat seed is 0～9 centimetre; Described 0 centimetre is meant under wheat seed.
The fertilizing amount of described slow/controlled release nitrogenous fertilizer is amounted to into 6～14 kilograms every mu of pure nutrient nitrogens.
According to the present invention, the fertilizing method of a grow wheat slow/controlled release nitrogenous fertilizer, optimized technical scheme is as follows:
The controlled release phase of described slow/controlled release nitrogenous fertilizer is 3～3.5 months; It is 10～12 kilograms every mu that fertilizing amount is amounted to pure nutrient nitrogen.
The fertilization depth of described slow/controlled release nitrogenous fertilizer is 12～15 centimetres; Slow/controlled release nitrogenous fertilizer is 0～3 centimetre from the horizontal range of wheat seed.
Described slow/controlled release nitrogenous fertilizer utilizes sower all disposable employed when wheat cultivation.Sower is existing conventional farm equipment.
Slow/controlled release nitrogenous fertilizer of the present invention can be any commercial slow/controlled release nitrogenous fertilizer that wheat is used that is suitable for.The preferred slow/controlled release nitrogenous fertilizer of the present invention is one of following: sulfur coating urea, sulphur priming coat add the paraffin coated carbamide, the sulphur priming coat adds high molecular polymer coated carbamide, thermoplastic resin membrane wrapping urea, heat convertible resin coating urea.
According to the present invention, further preferred, described slow/controlled release nitrogenous fertilizer nitrogen content 30-45wt%.
Further preferred, described slow/controlled release nitrogenous fertilizer is one of following:
Nitrogen content 30-38wt% slow/controlled release nitrogenous fertilizer is sulfur coating urea, and wherein sulfur coating accounts for the mass ratio 20-25% of the fertile urea of nuclear core; Or the sulphur priming coat adds high molecular polymer double-contracting film urea, and wherein sulfur coating accounts for the mass ratio 18-22% of the fertile urea of nuclear core, the high polymer film-coated mass ratio 1.5-2.5% that accounts for the fertile urea of nuclear core;
Nitrogen content 38-45wt% slow/controlled release nitrogenous fertilizer is thermoplastic resin membrane wrapping urea, and thermoplastic resin membrane wrapping accounts for the mass ratio 4-6% of the fertile urea of nuclear core.Above slow/controlled release nitrogenous fertilizer all can be buied by market, also can be by prior art for preparing, as adding high molecular polymer double-contracting film urea by CN1246265C (200410024050.X) preparation sulphur priming coat, and by the preparation method of sulphur priming coat wherein prepare sulfur coating urea, by CN1257136C (200410035783.3) preparation thermoplastic resin membrane wrapping urea.
Excellent results of the present invention is as follows:
(1) improves slow/controlled release nitrogenous fertilizer nutrientuse efficiency
Slow/controlled release nitrogenous fertilizer nutrientuse efficiency and fertilizing method are in close relations.One of reason, slow/controlled release nitrogenous fertilizer is mainly by organic matter or the preparation of inorganic matter coating, the release of the nitrogen of fertilizer in soil is to realize that by the micropore on the rete principal element that influences micropore is soil moisture and temperature, and its moisture of the different depth of soil layer is different with temperature.Secondly, the controlled release phase of fertilizer is another key factor that influences fertilizer utilization efficiency.Moreover the fertilizer application position influences the degree that nutrient contacts with wheat, and then influence is to nutrient absorbing.The accurate fertilising of the inventive method has obviously improved slow/controlled release nitrogenous fertilizer utilization ratio.
(2) increase wheat yield
Rationally using of slow/controlled release nitrogenous fertilizer not only can improve fertilizer utilization efficiency, also can promote wheat growth for wheat provides suitable nitrogen nutrition.The controlled release phase, fertilization depth, fertilizer that the efficient fertilizing method of wheat slow/controlled release nitrogenous fertilizer of the present invention has been optimized nitrogenous fertilizer when improving fertilizer utilization efficiency, significantly improved wheat yield from the distance of wheat root etc.
(3) save slow/controlled release nitrogenous fertilizer resource
Be subjected to the restriction of production technology, the ratio that the slow/controlled release nitrogen fertilizer production amount of China accounts for the total amount of application of nitrogenous fertilizer is not high, slow/controlled release nitrogenous fertilizer resource-constrained.The efficient fertilizing method of wheat slow/controlled release nitrogenous fertilizer of the present invention has improved slow/controlled release nitrogenous fertilizer utilization ratio, and Limited resources is played one's part to the full.
(4) promote the fertile sound development of controlled release
The peasant is effective and uses conveniently the requirement of fertilizer at present.The efficient fertilizing method of wheat slow/controlled release nitrogenous fertilizer of the present invention has satisfied this demand, and fertilizer is used with wheat cultivation is disposable and finished, and saves labor.Simultaneously at this method of application, optimized the controlled release phase, fertilization depth of slow/controlled release nitrogenous fertilizer, from the distance of seed etc., can bring into play fertilizer efficiency more fully.Be subjected to peasant's welcome, controlled release is fertile could healthy development.
Description of drawings
Fig. 1 to Fig. 3 is under wheat field planting condition, the land for growing field crops application experiment result of slow/controlled release nitrogen fertilizing method of the present invention:
Fig. 1 is the controlled release phase of slow/controlled release nitrogenous fertilizer and the graph of relation of fertilizer utilization efficiency, and abscissa is the controlled release phase (unit: the moon) of slow/controlled release nitrogenous fertilizer; Ordinate is the utilization rate of fertilizer (unit: %) of slow/controlled release nitrogenous fertilizer, used fertilizer is thermoplastic resin membrane wrapping urea, the mass ratio that coating layer accounts for core fertilizer urea is respectively 4%, 5%, 6%, 7%, 8%, and the corresponding controlled release phase is 2 months, 3 months, 4 months, 5 months, 6 months.
Fig. 2 is the fertilization depth of slow/controlled release nitrogenous fertilizer and the graph of relation of fertilizer utilization efficiency, and abscissa is fertilization depth (unit: centimetre); Ordinate is that (unit: %), used fertilizer is sulfur coating urea, nitrogen content 34%, 3 months controlled release phases for the utilization rate of fertilizer of slow/controlled release nitrogenous fertilizer.
Fig. 3 is the distance and slow/controlled release nitrogen fertilizer utilization ratio graph of relation of slow/controlled release nitrogenous fertilizer from wheat seed, and abscissa is a slow/controlled release nitrogenous fertilizer from the horizontal range of wheat seed (unit: centimetre); Ordinate is that (unit: %), used fertilizer is to be the double-deck coated carbamide of high molecular polymer of priming coat with sulphur, nitrogen content 35%, 3 months controlled release phases for the utilization rate of fertilizer of slow/controlled release nitrogenous fertilizer.
Embodiment
The present invention will be further described below in conjunction with embodiment and accompanying drawing, but be not limited thereto.Percentage described in the embodiment is mass percent.
Used fertilizer is commercial product among the embodiment, and Shandong Kingenta Bio-engineering Stock Co., Ltd. produces.Wherein,
1, nitrogen content 35% slow/controlled release nitrogenous fertilizer, adopting sulphur priming coat high molecular polymer double-contracting film urea, is first coating sulphur layer, coating high molecular polymer again on urea granules, wherein sulfur coating accounts for 20% of the fertile urea of nuclear core, and high molecular polymer accounts for 2% of the fertile urea of nuclear core.Commercially available or make by prior art, its preparation method is seen CN1246265C (200410024050.X).
2, nitrogen content 34% slow/controlled release nitrogenous fertilizer adopts sulfur coating urea, and sulfur coating accounts for the mass ratio 24% of the fertile urea of nuclear core, and is commercially available or make by prior art, and its preparation method is seen CN1246265C (200410024050.X).
3, nitrogen content 43% slow/controlled release nitrogenous fertilizer is 5% thermoplastic resin membrane wrapping urea, is to be core fertilizer with the granular urea, and thermoplastic resin is a coating layer, and the mass parts that thermoplastic resin membrane wrapping accounts for core fertilizer urea is 5%.Make by prior art, wherein the preparation method is referring to CN1257136C (200410035783.3)
4, nitrogen content 42% slow/controlled release nitrogenous fertilizer is 6% thermoplastic resin membrane wrapping urea, is to be core fertilizer with the granular urea, and thermoplastic resin is a coating layer, and the mass parts that thermoplastic resin membrane wrapping accounts for core fertilizer urea is 6%.Make by prior art, wherein the preparation method is referring to CN1257136C (200410035783.3).
The fertilizing method of embodiment 1, a grow wheat slow/controlled release nitrogenous fertilizer, selecting the controlled release phase for use is 3 months slow/controlled release nitrogenous fertilizer; Used fertilizer is the sulphur priming coat high molecular polymer double-contracting film urea of nitrogen content 35%; All disposable employed when wheat cultivation; The fertilization depth of slow/controlled release nitrogenous fertilizer is 15 centimetres; The horizontal range of slow/controlled release nitrogenous fertilizer and wheat seed is 0 centimetre (slow/controlled release nitrogenous fertilizer is under wheat seed, down together); It is 11 kilograms every mu that fertilizing amount is amounted to into pure nutrient nitrogen; Utilize sower, sowing is carried out simultaneously with fertilising.
The fertilizing method of embodiment 2, a grow wheat slow/controlled release nitrogenous fertilizer, selecting the controlled release phase for use is 3 months slow/controlled release nitrogenous fertilizer; Used fertilizer is 5% thermoplastic resin membrane wrapping urea of nitrogen content 43%; All disposable employed when wheat cultivation; The fertilization depth of slow/controlled release nitrogenous fertilizer is 12 centimetres; The horizontal range of slow/controlled release nitrogenous fertilizer and wheat seed is 3 centimetres (slow/controlled release nitrogenous fertilizer is in the capable sides of wheat cultivation, down together); It is 8 kilograms every mu that fertilizing amount is amounted to into pure nutrient nitrogen; Utilize sower, sowing is carried out simultaneously with fertilising.
The fertilizing method of embodiment 3, a grow wheat slow/controlled release nitrogenous fertilizer, selecting the controlled release phase for use is 4 months slow/controlled release nitrogenous fertilizer; Used fertilizer is 6% thermoplastic resin membrane wrapping urea of nitrogen content 42%; All disposable employed when wheat cultivation; The fertilization depth of slow/controlled release nitrogenous fertilizer is 14 centimetres; The horizontal range of slow/controlled release nitrogenous fertilizer and wheat seed is 6 centimetres; It is 6 kilograms every mu that fertilizing amount is amounted to into pure nutrient nitrogen; Utilize sower, sowing is carried out simultaneously with fertilising.
The fertilizing method of embodiment 4, a grow wheat slow/controlled release nitrogenous fertilizer, selecting the controlled release phase for use is 3 months slow/controlled release nitrogenous fertilizer; Used fertilizer is the sulphur priming coat high molecular polymer double-contracting film urea of nitrogen content 35%; All disposable employed when wheat cultivation; The fertilization depth of slow/controlled release nitrogenous fertilizer is 12 centimetres; The horizontal range of slow/controlled release nitrogenous fertilizer and wheat seed is 9 centimetres; It is 14 kilograms every mu that fertilizing amount is amounted to into pure nutrient nitrogen; Utilize sower, sowing is carried out simultaneously with fertilising.
The fertilizing method of embodiment 5, a grow wheat slow/controlled release nitrogenous fertilizer, selecting the controlled release phase for use is 3 months slow/controlled release nitrogenous fertilizer; Used fertilizer is the sulfur coating urea of nitrogen content 34%; All disposable employed when wheat cultivation; The fertilization depth of slow/controlled release nitrogenous fertilizer is 16 centimetres; The horizontal range of slow/controlled release nitrogenous fertilizer and wheat seed is 0 centimetre; It is 9 kilograms every mu that fertilizing amount is amounted to into pure nutrient nitrogen; Utilize sower, sowing is carried out simultaneously with fertilising.
The fertilizing method of embodiment 6, a grow wheat slow/controlled release nitrogenous fertilizer, selecting the controlled release phase for use is 4 months slow/controlled release nitrogenous fertilizer; Used fertilizer is 6% thermoplastic resin membrane wrapping urea of nitrogen content 42%; All disposable employed when wheat cultivation; The fertilization depth of slow/controlled release nitrogenous fertilizer is 13 centimetres; The horizontal range of slow/controlled release nitrogenous fertilizer and wheat seed is 5 centimetres; It is 10 kilograms every mu that fertilizing amount is amounted to into pure nutrient nitrogen; Utilize sower, sowing is carried out simultaneously with fertilising.
The fertilizing method of embodiment 7, a grow wheat slow/controlled release nitrogenous fertilizer, selecting the controlled release phase for use is 3 months slow/controlled release nitrogenous fertilizer; Used fertilizer is 5% thermoplastic resin membrane wrapping urea of nitrogen content 43%; All disposable employed when wheat cultivation; The fertilization depth of slow/controlled release nitrogenous fertilizer is 15 centimetres; The horizontal range of slow/controlled release nitrogenous fertilizer and wheat seed is 6 centimetres; It is 7 kilograms every mu that fertilizing amount is amounted to into pure nutrient nitrogen; Utilize sower, sowing is carried out simultaneously with fertilising.
The fertilizing method of embodiment 8, a grow wheat slow/controlled release nitrogenous fertilizer, selecting the controlled release phase for use is 4 months slow/controlled release nitrogenous fertilizer; Used fertilizer is 6% thermoplastic resin membrane wrapping urea of nitrogen content 42%; All disposable employed when wheat cultivation; The fertilization depth of slow/controlled release nitrogenous fertilizer is 11 centimetres; The horizontal range of slow/controlled release nitrogenous fertilizer and wheat seed is 5 centimetres; It is 12 kilograms every mu that fertilizing amount is amounted to into pure nutrient nitrogen; Utilize sower, sowing is carried out simultaneously with fertilising.
Comparative Examples: adopt the slow/controlled release nitrogen fertilizer applying method of routine in producing at present, promptly before the soil rotary tillage slow/controlled release nitrogen fertilizer is evenly spread fertilizer over the fields in soil surface, rotary tillage is buried then.The sulfur coating urea that used slow/controlled release nitrogenous fertilizer is nitrogen content 34%.
Embodiment and Comparative Examples field experiment effect are as follows:
Test site: Huantai County, Shandong Province, Yucheng, Shandong Province county, Shandong Province's Liaocheng City.
Test period: 2007 to 2010, continuous 3 years.
For trying wheat breed: three test sites are all used Jimai 22.
Amount to into pure nutrient nitrogen, embodiment 1-8 is identical with the Comparative Examples fertilizer amount, 12 kilograms every mu.
Effect sees Table 1.
Table 1. is compared the effect of embodiment 1-8 with Comparative Examples
Claims (6)
1. the fertilizing method of a grow wheat slow/controlled release nitrogenous fertilizer, selecting the controlled release phase for use is 3～4 months slow/controlled release nitrogenous fertilizer, all disposable employed when wheat cultivation; The fertilization depth of slow/controlled release nitrogenous fertilizer is 11～16 centimetres, and the horizontal range of slow/controlled release nitrogenous fertilizer and wheat seed is 0～9 centimetre; Described 0 centimetre is meant under wheat seed;
The fertilizing amount of described slow/controlled release nitrogenous fertilizer is amounted to into 6～14 kilograms every mu of pure nutrient nitrogens.
2. the fertilizing method of wheat slow/controlled release nitrogenous fertilizer as claimed in claim 1, the controlled release phase that it is characterized in that described slow/controlled release nitrogenous fertilizer is 3.0～3.5 months, it is 10～12 kilograms every mu that fertilizing amount is amounted to into pure nutrient nitrogen.
3. the fertilizing method of wheat slow/controlled release nitrogenous fertilizer as claimed in claim 1, the fertilization depth that it is characterized in that described slow/controlled release nitrogenous fertilizer is 12～15 centimetres, slow/controlled release nitrogenous fertilizer is 0～3 centimetre from the horizontal range of wheat seed.
4. as the fertilizing method of each described wheat slow/controlled release nitrogenous fertilizer of claim 1～3, it is characterized in that described slow/controlled release nitrogenous fertilizer is one of following: sulfur coating urea, sulphur priming coat add the paraffin coated carbamide, the sulphur priming coat adds high molecular polymer double-contracting film urea, thermoplastic resin membrane wrapping urea, heat convertible resin coating urea.
5. the fertilizing method of wheat slow/controlled release nitrogenous fertilizer as claimed in claim 4 is characterized in that described slow/controlled release nitrogenous fertilizer nitrogen content 30-45wt%.
6. as the fertilizing method of each described wheat slow/controlled release nitrogenous fertilizer of claim 1～3, it is characterized in that described slow/controlled release nitrogenous fertilizer is one of following:
A, nitrogen content 30-38wt% slow/controlled release nitrogenous fertilizer are sulfur coating urea, and wherein sulfur coating accounts for the mass ratio 20-25% of the fertile urea of nuclear core; Or the sulphur priming coat adds high molecular polymer double-contracting film urea, and wherein sulfur coating accounts for the mass ratio 18-22% of the fertile urea of nuclear core, the high polymer film-coated mass ratio 1.5-2.5% that accounts for the fertile urea of nuclear core;
B, nitrogen content 38-45wt% slow/controlled release nitrogenous fertilizer are thermoplastic resin membrane wrapping urea, and thermoplastic resin membrane wrapping accounts for the mass ratio 4-6% of the fertile urea of nuclear core.
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| CN102918980A (en) * | 2012-11-11 | 2013-02-13 | 河南农业大学 | Method for applying base fertilizer and additional fertilizer by special slow controlled release urea for winter wheat and summer maize crop-rotation field |
| CN103787757A (en) * | 2014-01-21 | 2014-05-14 | 王明富 | Organic and inorganic fertilizer with quick-acting and controlled-release functions and preparation method thereof |
| CN104718867A (en) * | 2015-04-09 | 2015-06-24 | 山东省农业科学院农业资源与环境研究所 | Winter wheat one-step fertilization method |
| CN105706605A (en) * | 2016-03-01 | 2016-06-29 | 中国科学院南京土壤研究所 | Method for one-time root zone application of all fertilizer in whole growth period of wheat |
| CN108496500A (en) * | 2018-03-09 | 2018-09-07 | 西藏自治区农牧科学院农业质量标准与检测研究所 | A kind of fertilizing method of highland barley slow/controlled release nitrogenous fertilizer |
| CN109548446A (en) * | 2017-09-26 | 2019-04-02 | 中国科学院南京土壤研究所 | The disposable choker perforated method of fertilizer needed for the drilling wheat time of infertility |
| CN110304969A (en) * | 2019-08-13 | 2019-10-08 | 苏建平 | A kind of wheat special controlled release fertilizer, preparation method and its application |
| CN113505987A (en) * | 2021-07-08 | 2021-10-15 | 江苏省海洋资源开发研究院(连云港) | Seedling seeding and fertilizing integrated supervision feedback system based on big data |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102918980A (en) * | 2012-11-11 | 2013-02-13 | 河南农业大学 | Method for applying base fertilizer and additional fertilizer by special slow controlled release urea for winter wheat and summer maize crop-rotation field |
| CN102918980B (en) * | 2012-11-11 | 2014-03-19 | 河南农业大学 | Method for applying base fertilizer and additional fertilizer by special slow controlled release urea for winter wheat and summer maize crop-rotation field |
| CN103787757A (en) * | 2014-01-21 | 2014-05-14 | 王明富 | Organic and inorganic fertilizer with quick-acting and controlled-release functions and preparation method thereof |
| CN103787757B (en) * | 2014-01-21 | 2016-01-20 | 王明富 | A kind of have organic and inorganic fertilizer of quick-acting and slowly-releasing effect and preparation method thereof |
| CN104718867A (en) * | 2015-04-09 | 2015-06-24 | 山东省农业科学院农业资源与环境研究所 | Winter wheat one-step fertilization method |
| CN105706605A (en) * | 2016-03-01 | 2016-06-29 | 中国科学院南京土壤研究所 | Method for one-time root zone application of all fertilizer in whole growth period of wheat |
| CN109548446A (en) * | 2017-09-26 | 2019-04-02 | 中国科学院南京土壤研究所 | The disposable choker perforated method of fertilizer needed for the drilling wheat time of infertility |
| CN108496500A (en) * | 2018-03-09 | 2018-09-07 | 西藏自治区农牧科学院农业质量标准与检测研究所 | A kind of fertilizing method of highland barley slow/controlled release nitrogenous fertilizer |
| CN113303182A (en) * | 2018-03-09 | 2021-08-27 | 西藏自治区农牧科学院农业质量标准与检测研究所 | Highland barley cultivation method in plateau area |
| CN110304969A (en) * | 2019-08-13 | 2019-10-08 | 苏建平 | A kind of wheat special controlled release fertilizer, preparation method and its application |
| CN113505987A (en) * | 2021-07-08 | 2021-10-15 | 江苏省海洋资源开发研究院(连云港) | Seedling seeding and fertilizing integrated supervision feedback system based on big data |
| CN113505987B (en) * | 2021-07-08 | 2022-02-11 | 江苏省海洋资源开发研究院(连云港) | Seedling seeding and fertilizing integrated supervision feedback system based on big data |
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Application publication date: 20110817 |