CN102210212A - Method for fertilizing medium-slow/controlled release nitrogen fertilizer in wheat and corns crop rotation - Google Patents
Method for fertilizing medium-slow/controlled release nitrogen fertilizer in wheat and corns crop rotation Download PDFInfo
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Abstract
The invention relates to a method for fertilizing medium-slow/controlled release nitrogen fertilizer in wheat and corns through crop rotation. In the method, the slow/controlled release nitrogen fertilizer with the controlled release period of 3 to 3.5 months is selected; the total using amount of the slow/controlled release nitrogen fertilizer converted into pure nitrogen is 280 to 360 kilos per hectare; the slow/controlled release nitrogen fertilizer is fertilized respectively in the wheat and corn through two-season crop rotation; and 40 to 50 percent of the slow/controlled release nitrogen fertilizer is fertilized in the wheat and 50 to 60 percent of the slow/controlled release nitrogen fertilizer is fertilized in the corns. According to the nitrogen absorption rules of the wheat and the corns and the nitrogen supply characteristic of soil in different seasons, the continuous two-season crops of the wheat and the corns are regarded as a whole, the using amount of the slow/controlled release nitrogen fertilizer in the wheat and the corns is reasonably distributed, the fertilizer application mode is refined, fertilizer is saved and effect is improved, and the total yield of the two-season crops 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 in winter wheat and Summer Maize Rotation belongs to the fertile applied technical field of slow/controlled release.
Background technology
During the 11th Five-Year, the technical research and the industrialized development of China's slowly/controlled releasing fertilizer are rapid, numerous technologies reach or surpass the advanced world level, production scale enlarges day by day, production cost significantly reduces, add that constantly succeeding in developing of crop special-purpose control-release fertilizer more makes product price further descend, and is applied to field crop and becomes a reality.
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.Chinese patent CN100429186C (ZL 200710114213.7) discloses a kind of corn-specific controlled-release fertilizer and preparation method thereof, and the serial controlled release that utilizes sulphur, resin coating material to produce is fertile in composite production corn-specific controlled-release fertilizer.201010159451.1 relate to a kind of seed-friendly corn-specific controlled-release fertilizer, material component is: sulphur adds high molecular polymer coated carbamide, sulphur and adds that high molecular polymer coating potassium chloride, 4.5% thermoplastic add the double-deck coated carbamide of thermosetting, 5.0% thermoplastic adds the double-deck coated carbamide of thermosetting, diammonium phosphate, granule potassium chloride and zinc sulphate.Compare with the fertile technology of preparing of controlled release, the fertilizing method research of controlled release fertilizer relatively lags behind, and has restricted the performance of the fat effect of controlled release and applies.
Wheat, corn are the staple food crops of China, also are the highest crops of mechanized farming degree.Slow/controlled release nitrogenous fertilizer can be disposable employed in conjunction with sowing, needn't topdress, and saves labor, and saves labour cost, welcome by the peasant.
In slowly/controlled releasing fertilizer, slow/controlled release nitrogenous fertilizer is main body.In wheat, corn crop rotation, because two kinds of crop differences in season of living in, temperature is different with soil temperature, and Soil Moisture is also variant, and two factors discharge the nutrient of slow/controlled release nitrogenous fertilizer and have a significant effect.The soil temperature height, moisture is many, and the nutrient of slow/controlled release nitrogenous fertilizer discharges fast.In wheat growth season, although the wheat growth phase is long, temperature is lower, because rainfall is few, soil water content is few, and the nutrient of slow/controlled release nitrogenous fertilizer discharges slower.Then opposite season at corn growth.In addition, wheat and corn are also inequality to the degree of dependence of soil nitrogen.According to the study, the ratio that wheat absorbs soil nitrogen is higher than corn, and corn then more absorbs the fertilizer nitrogen.Therefore, wheat, corn are done as a whole consideration arrange using of slow/controlled release nitrogenous fertilizer can better improve fertilizer utilization efficiency, reduce the fertilizer waste, save slow/controlled release nitrogenous fertilizer resource, but have not yet to see the report of this respect.
Summary of the invention
In order to remedy the deficiencies in the prior art, the invention provides slow/controlled release nitrogen fertilizing method in a grow wheat, the corn crop rotation, to improve the utilization ratio of slow/controlled release nitrogenous fertilizer on wheat, corn, increase wheat, corn annual production.
Summary of the invention
Time when at present, the nutrient controlled release phase computational methods of China's slow/controlled release nitrogenous fertilizer are the nutrient release rate that reaches more than 80% is release period.The nutrient of Shi Fanging can not be considered as wheat, the nitrogen supply when corn planting is connected, and has both guaranteed the normal growth of second stubble crop, has avoided the loss waste of residue fertilizer again.The present invention is according to wheat, corn suction nitrogen rule separately, the nitrogen supply characteristics of Various Seasonal soil, with wheat, corn continuous two season crop do as a whole considering as a whole, slow/controlled release nitrogenous fertilizer distribution on the total consumption of slow/controlled release nitrogenous fertilizer, the two kinds of crops, fertilization mode etc. provide a kind of fertilizing method of slow/controlled release nitrogenous fertilizer, and carried out field experiment, obtained the effect of tangible joint fertilizer, synergy, two season of raising overall crop yield.
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).
Corn tri-leaf period, be meant that the 3rd leaf of plant exposes 2～3 centimetres in the leaf heart.
Detailed Description Of The Invention
Slow/controlled release nitrogen fertilizing method in one grow wheat, the corn crop rotation, selecting the controlled release phase for use is 3～3.5 months slow/controlled release nitrogenous fertilizer, it is 280～360 kilograms of per hectares that described slow/controlled release nitrogenous fertilizer is amounted to into the total consumption of purity nitrogen, uses respectively in wheat, corn two seasons crop rotation; Wherein, 40～50% of the total consumption of slow/controlled release nitrogenous fertilizer is a wheat usefulness, and 50～60% of the total consumption of slow/controlled release nitrogenous fertilizer is corn usefulness.
The fertilization mode of slow/controlled release nitrogenous fertilizer on wheat be, with wheat with slow/controlled release nitrogenous fertilizer total amount 50～70% before wheat cultivation full topsoil use, promptly before the soil rotary tillage, evenly be sprinkling upon surface, rotary tillage then; Remaining 30～50% when wheat cultivation, utilize sower with the sowing disposable finishing; Fertilizer is 0～5 centimetre from the horizontal range of wheat seed, described 0 centimetre of definite being meant under wheat seed; Fertilizer is 11～15 centimetres from the distance of soil surface.
The fertilization mode of slow/controlled release nitrogenous fertilizer on corn be, corn is all used with sowing when the corn seeding simultaneously with slow/controlled release nitrogenous fertilizer, and fertilizer is 0～3 centimetre from the horizontal range of corn seed, and fertilizer is 9～12 centimetres from the distance of soil surface; Perhaps, corn is all used at corn with slow/controlled release nitrogenous fertilizer tri-leaf period, fertilizer is from 3～5 centimetres of the capable distances of corn, and fertilizer is 9～13 centimetres from the distance of soil surface.
According to the present invention, slow/controlled release nitrogen fertilizing method in wheat, the corn crop rotation, optimized technical scheme is as follows:
Selecting the controlled release phase for use is 3 months slow/controlled release nitrogenous fertilizer, and slow/controlled release nitrogenous fertilizer is amounted to into 320～340 kilograms of the total consumptions of purity nitrogen, uses respectively in wheat, the corn two seasons crop rotation.Wherein, 41～43% of the total consumption of slow/controlled release nitrogenous fertilizer is a wheat usefulness, and 57～59% of the total consumption of slow/controlled release nitrogenous fertilizer is corn usefulness.
The fertilization mode of slow/controlled release nitrogenous fertilizer on wheat be, with wheat with slow/controlled release nitrogenous fertilizer total amount 58～62% before wheat cultivation full topsoil use; Remaining 39～41% when wheat cultivation, utilize sower with the sowing disposable finishing; Fertilizer is 0～1 centimetre from the horizontal range of wheat seed, and fertilizer is 14～15 centimetres from the distance of soil surface.
The fertilization mode of slow/controlled release nitrogenous fertilizer on corn is, all utilize when the corn seeding sower and sowing to carry out simultaneously with slow/controlled release nitrogenous fertilizer corn, fertilizer is 0～1 centimetre from the horizontal range of corn seed, and fertilizer is 11～12 centimetres from the distance of soil surface.
Slow/controlled release nitrogenous fertilizer of the present invention can be any commercial slow/controlled release nitrogenous fertilizer that wheat, corn are 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 double-contracting film urea, 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:
The preferred sulfur coating urea of nitrogen content 30-38wt% slow/controlled release nitrogenous fertilizer, sulphur film account 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 preferred thermoplastic resin coated carbamide, thermoplastic resin membrane wrapping account 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 CN1246265C (200410024050.X), CN1257136C (200410035783.3).
Excellent results of the present invention is as follows:
1, improves slow/controlled release nitrogenous fertilizer nutrientuse efficiency
At present, in the research and application process of slow/controlled release nitrogenous fertilizer, calculate fertilizing amount and selecting for use the controlled release of fertilizer during the phase, generally reach more than 80% as foundation with the nitrogen release rate of slow/controlled release nitrogenous fertilizer in soil, often higher according to the fertilizer amount that this way is calculated, the controlled release phase is also long partially, and some nutrient does not utilize when crop harvesting.Therefore as a whole consideration is done in wheat, corn crop rotation, can when second stubble crop calculates fertilizing amount, be counted.Therefore, among the present invention slow/controlled release nitrogen fertilizing method be a grow wheat, corn crop rotation preferably, fertilizing method accurately, obviously improved slow/controlled release nitrogenous fertilizer utilization ratio.
2, 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.Slow/controlled release nitrogen fertilizing method in wheat of the present invention, the corn crop rotation has improved slow/controlled release nitrogenous fertilizer utilization ratio, and Limited resources is played one's part to the full.
3, promote slow/controlled release nitrogenous fertilizer to develop in a healthy way
Wheat, corn are the staple food crops of China, also are the highest crops of mechanization.Slow/controlled release nitrogenous fertilizer has the advantage that fertilising is simple, save labor, and welcome by the peasant.But the effect of fertilizer and cost also are the problems that the peasant is concerned about.In wheat of the present invention, the corn crop rotation slow/controlled release nitrogen fertilizing method provide rationally, efficient, simple fertilizing method, satisfied this demand.Can promote the application and the healthy development of slow/controlled release nitrogenous fertilizer.
Description of drawings
Fig. 1 is the Nitrogen Absorption figure of wheat, and abscissa is the Nitrogen Absorption total amount of wheat, wherein from the nitrogen in the soil with from the nitrogen in the fertilizer; Ordinate is the quantity (unit: kilogram/hectare) of nitrogen that wheat absorbs.
Fig. 2 is the Nitrogen Absorption figure of corn, and abscissa is the Nitrogen Absorption total amount of corn, wherein from the nitrogen in the soil with from the nitrogen in the fertilizer; Ordinate is the quantity (unit: kilogram/hectare) of nitrogen that corn absorbs.
Embodiment
The present invention will be further described below in conjunction with embodiment, but be not limited thereto.Percentage described in the embodiment is mass percent.The slow/controlled release nitrogenous fertilizer of selecting for use among the embodiment is described as follows:
Sulfur coating urea, nitrogen content 34%, 3 months controlled release phases; Sulfur coating accounts for 25% of urea quality.
The sulphur priming coat adds high molecular polymer double-contracting film urea, nitrogen content 35%, and wherein sulfur coating accounts for the mass ratio 20% of the fertile urea of nuclear core, the high polymer film-coated mass ratio 2% that accounts for the fertile urea of nuclear core, 3 months controlled release phases; Preparation is referring to CN1246265C.
5% heat tree property resin coated urea, nitrogen content 43%, 3 months controlled release phases; Preparation is referring to CN1257136C.
More than three kinds of slow/controlled release nitrogenous fertilizer, Shandong Kingenta Bio-engineering Stock Co., Ltd. produces and to sell.
Slow/controlled release nitrogen fertilizing method in embodiment 1, wheat, the corn crop rotation, technical scheme is as follows:
(1) wheat, two season of corn slow/controlled release nitrogenous fertilizer to amount to into the total consumption of purity nitrogen be 330 kilograms of per hectares.Slow/controlled release nitrogenous fertilizer is sulfur coating urea, nitrogen content 34%, 3 months controlled release phases.
(2) 42% of the total consumption of slow/controlled release nitrogenous fertilizer use on wheat, 58% uses on corn.
(3) fertilization mode of slow/controlled release nitrogenous fertilizer on wheat is, wheat with slow/controlled release nitrogenous fertilizer total amount 60% before wheat cultivation full topsoil use; All the other 40% when wheat cultivation, utilize sower with the sowing disposable finishing; Fertilizer is 0 centimetre from the horizontal range of wheat seed; Fertilizer is 15 centimetres from the distance of soil surface.
(4) fertilization mode of slow/controlled release nitrogenous fertilizer on corn is, corn utilizes when the corn seeding sower and sowing to use simultaneously with the whole of slow/controlled release nitrogenous fertilizer; Fertilizer is 0 centimetre from the horizontal range of corn seed; Fertilizer is 12 centimetres from the distance of soil surface.
Slow/controlled release nitrogen fertilizing method in embodiment 2, wheat, the corn crop rotation, technical scheme is as follows:
(1) wheat, two season of corn slow/controlled release nitrogenous fertilizer to amount to into the total consumption of purity nitrogen be 300 kilograms of per hectares.Slow/controlled release nitrogenous fertilizer is 5% heat tree property resin coated urea, nitrogen content 43%, 3 months controlled release phases.
(2) 50% of the total consumption of slow/controlled release nitrogenous fertilizer use on wheat, 50% uses on corn.
(3) wheat with the fertilization mode of slow/controlled release nitrogenous fertilizer is, wheat with slow/controlled release nitrogenous fertilizer total amount 50% before wheat cultivation full topsoil use; All the other 50% when wheat cultivation, utilize sower with the sowing disposable finishing; Fertilizer is 3 centimetres from the horizontal range of wheat seed; Fertilizer is 12 centimetres from the distance of soil surface.
(4) corn is used once at corn with slow/controlled release nitrogenous fertilizer and all use tri-leaf period; Fertilizer is from 5 centimetres of the capable distances of corn; Fertilizer is 11 centimetres from the distance of soil surface.
Slow/controlled release nitrogen fertilizing method in embodiment 3, wheat, the corn crop rotation, technical scheme is as follows:
(1) wheat, two season of corn slow/controlled release nitrogenous fertilizer to amount to into the total consumption of purity nitrogen be 350 kilograms of per hectares.Slow/controlled release nitrogenous fertilizer adds high molecular polymer double-contracting film urea, nitrogen content 35%, 3 months controlled release phases for the sulphur priming coat.
(2) 43% of the total consumption of slow/controlled release nitrogenous fertilizer use on wheat, 57% uses on corn.
(3) fertilization mode of slow/controlled release nitrogenous fertilizer on wheat is, wheat with slow/controlled release nitrogenous fertilizer total amount 70% before wheat cultivation full topsoil use; All the other 30% when wheat cultivation, utilize sower with the sowing disposable finishing; Fertilizer is 5 centimetres from the horizontal range of wheat seed; Fertilizer is 13 centimetres from the distance of soil surface.
(4) fertilization mode of slow/controlled release nitrogenous fertilizer on corn is, uses tri-leaf period at corn; Fertilizer is from 3 centimetres of the capable distances of corn; Fertilizer is 10 centimetres from the distance of soil surface.
Slow/controlled release nitrogen fertilizing method in embodiment 4, wheat, the corn crop rotation, technical scheme is as follows:
(1) wheat, two season of corn slow/controlled release nitrogenous fertilizer to amount to into the total consumption of purity nitrogen be 280 kilograms of per hectares.Slow/controlled release nitrogenous fertilizer adds high molecular polymer double-contracting film urea, nitrogen content 35%, 3 months controlled release phases for the sulphur priming coat.
(2) 47% of the total consumption of slow/controlled release nitrogenous fertilizer use on wheat, 53% uses on corn.
(3) fertilization mode on wheat is, wheat with slow/controlled release nitrogenous fertilizer total amount 58% before wheat cultivation full topsoil use; All the other 42% when wheat cultivation, utilize sower with the sowing disposable finishing; Fertilizer is 4 centimetres from the horizontal range of wheat seed; Fertilizer is 11 centimetres from the distance of soil surface.
(4) fertilization mode on corn is, corn all utilizes when the corn seeding sower and sowing to use simultaneously with slow/controlled release nitrogenous fertilizer; Fertilizer is 3 centimetres from the horizontal range of corn seed; Fertilizer is 9 centimetres from the distance of soil surface.
Slow/controlled release nitrogen fertilizing method in embodiment 5, wheat, the corn crop rotation, technical scheme is as follows:
(1) wheat, two season of corn slow/controlled release nitrogenous fertilizer to amount to into the total consumption of purity nitrogen be 340 kilograms of per hectares.Slow/controlled release nitrogenous fertilizer is sulfur coating urea, nitrogen content 34%, 3 months controlled release phases.
(2) 45% of the total consumption of slow/controlled release nitrogenous fertilizer use on wheat, 55% uses on corn.
(3) fertilization mode of slow/controlled release nitrogenous fertilizer on wheat is, 65% before wheat cultivation full topsoil use; All the other 35% when wheat cultivation, utilize sower with the sowing disposable finishing; Fertilizer is 2 centimetres from the horizontal range of wheat seed; Fertilizer is 14 centimetres from the distance of soil surface.
(4) corn is all used at corn with slow/controlled release nitrogenous fertilizer tri-leaf period, and fertilizer is from 4 centimetres of the capable distances of corn; Fertilizer is 12 centimetres from the distance of soil surface.
Slow/controlled release nitrogen fertilizing method in embodiment 6, wheat, the corn crop rotation, technical scheme is as follows:
(1) wheat, two season of corn slow/controlled release nitrogenous fertilizer to amount to into the total consumption of purity nitrogen be 320 kilograms of per hectares.Slow/controlled release nitrogenous fertilizer is 5% heat tree property resin coated urea, nitrogen content 43%, 3 months controlled release phases.
(2) 40% of the total consumption of slow/controlled release nitrogenous fertilizer use on wheat, 60% uses on corn.
(3) fertilization mode of slow/controlled release nitrogenous fertilizer on wheat is, wheat with slow/controlled release nitrogenous fertilizer total amount 55% before wheat cultivation full topsoil use; All the other 45% when wheat cultivation, utilize sower with the sowing disposable finishing; Fertilizer is 0 centimetre from the horizontal range of wheat seed; Fertilizer is 13 centimetres from the distance of soil surface.
(4) fertilization mode of slow/controlled release nitrogenous fertilizer on corn is, corn all utilizes when the corn seeding sower and sowing to use simultaneously with slow/controlled release nitrogenous fertilizer; Fertilizer is 3 centimetres from the horizontal range of corn seed; Fertilizer is 10 centimetres from the distance of soil surface.
Comparative Examples: conventional slow/controlled release nitrogen fertilizer applying method in producing at present, promptly before wheat, corn seeding, carry out respectively, before the soil rotary tillage fertilizer is evenly spread fertilizer over the fields in soil surface, rotary tillage is buried then.
Embodiment 1-6 and Comparative Examples effect are as follows:
Test site: Huantai County, Shandong Province, Yucheng, Shandong Province county.
Test period: year September in October, 2009 to 2010.
For trying wheat breed: two test sites are all used Jimai 22.
For trying corn variety: Huantai County's Lay farming 14, Yucheng county Zheng Dan 958.
Amount to into pure nutrient nitrogen, embodiment 1-6 is identical with the Comparative Examples fertilizer amount, 330 kilograms of per hectares.Comparative Examples sulfur coating urea, nitrogen content 34%.Effect sees Table 1.
Table 1 is compared the effect of embodiment 1-6 with Comparative Examples
Claims (5)
1. slow/controlled release nitrogen fertilizing method in a grow wheat, the corn crop rotation, selecting the controlled release phase for use is 3～3.5 months slow/controlled release nitrogenous fertilizer, it is 280～360 kilograms of per hectares that described slow/controlled release nitrogenous fertilizer is amounted to into the total consumption of purity nitrogen, uses respectively in wheat, corn two seasons crop rotation; Wherein, 40～50% of the total consumption of slow/controlled release nitrogenous fertilizer is a wheat usefulness, and 50～60% of the total consumption of slow/controlled release nitrogenous fertilizer is corn usefulness;
The fertilization mode of slow/controlled release nitrogenous fertilizer on wheat be, with wheat with slow/controlled release nitrogenous fertilizer total amount 50～70% before wheat cultivation full topsoil use, promptly before the soil rotary tillage, evenly be sprinkling upon surface, rotary tillage then; Remaining 30～50% when wheat cultivation, utilize sower with the sowing disposable finishing; Fertilizer is 0～5 centimetre from the horizontal range of wheat seed, described 0 centimetre of definite being meant under wheat seed; Fertilizer is 11～15 centimetres from the distance of soil surface;
The fertilization mode of slow/controlled release nitrogenous fertilizer on corn be, corn is all used with sowing when the corn seeding simultaneously with slow/controlled release nitrogenous fertilizer, and fertilizer is 0～3 centimetre from the horizontal range of corn seed, and fertilizer is 9～12 centimetres from the distance of soil surface; Perhaps, corn is all used at corn with slow/controlled release nitrogenous fertilizer tri-leaf period, fertilizer is from 3～5 centimetres of the capable distances of corn, and fertilizer is 9～13 centimetres from the distance of soil surface.
2. slow/controlled release nitrogen fertilizing method in wheat as claimed in claim 1, the corn crop rotation, it is characterized in that selecting for use the controlled release phase is 3 months slow/controlled release nitrogenous fertilizer, slow/controlled release nitrogenous fertilizer is amounted to into 320～340 kilograms of the total consumptions of purity nitrogen, uses respectively in wheat, the corn two seasons crop rotation; Wherein, 41～43% of the total consumption of slow/controlled release nitrogenous fertilizer is a wheat usefulness, and 57～59% of the total consumption of slow/controlled release nitrogenous fertilizer is corn usefulness.
The fertilization mode of slow/controlled release nitrogenous fertilizer on wheat be, with wheat with slow/controlled release nitrogenous fertilizer total amount 58～62% before wheat cultivation full topsoil use; Remaining 39～41% when wheat cultivation, utilize sower with the sowing disposable finishing; Fertilizer is 0～1 centimetre from the horizontal range of wheat seed, and fertilizer is 14～15 centimetres from the distance of soil surface;
The fertilization mode of slow/controlled release nitrogenous fertilizer on corn is, all utilize when the corn seeding sower and sowing to use simultaneously with slow/controlled release nitrogenous fertilizer corn, fertilizer is 0～1 centimetre from the horizontal range of corn seed, and fertilizer is 11～12 centimetres from the distance of soil surface.
3. slow/controlled release nitrogen fertilizing method in wheat as claimed in claim 1 or 2, the corn crop rotation, 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.
4. slow/controlled release nitrogen fertilizing method in wheat as claimed in claim 1 or 2, the corn crop rotation is characterized in that described slow/controlled release nitrogenous fertilizer nitrogen content 30-45wt%.
5. slow/controlled release nitrogen fertilizing method in wheat as claimed in claim 1 or 2, the corn crop rotation is characterized in that described slow/controlled release nitrogenous fertilizer is one of following:
The sulfur coating urea of a, nitrogen content 30-38wt%, sulphur film account for the mass ratio 20-25% of the fertile urea of nuclear core; Perhaps the sulphur priming coat of nitrogen content 30-38wt% 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;
The thermoplastic resin membrane wrapping urea of b, nitrogen content 38-45wt%, thermoplastic resin membrane wrapping account 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 |
| CN103053256A (en) * | 2013-01-23 | 2013-04-24 | 山东省农业科学院农业资源与环境研究所 | Few-no-tillage-soil seeding and fertilizing method for wheat and corns under complete straw mulching condition |
| CN103098643A (en) * | 2013-03-08 | 2013-05-15 | 昭通市植保植检站 | Labor-saving cultivation method of dry land grain crops |
| CN103477777A (en) * | 2013-08-16 | 2014-01-01 | 河南农业大学 | Nitrogen fertilizer annual application method for realizing wheat-corn double-cropping balance high yield |
| CN103749034A (en) * | 2013-12-31 | 2014-04-30 | 中国科学院南京土壤研究所 | Method for reducing nitrogen fertilizer in wheat-corn rotation system |
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| 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 |
| CN108834787A (en) * | 2018-07-03 | 2018-11-20 | 云南省农业科学院农业环境资源研究所 | A kind of method of winter-spring season biological characters of wheat under drought conditions Corn Rotation System water conservation section fertilizer |
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