CN109122159A - A kind of potato planting subtracts nitrogen synergisting method - Google Patents
A kind of potato planting subtracts nitrogen synergisting method Download PDFInfo
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- CN109122159A CN109122159A CN201811018818.0A CN201811018818A CN109122159A CN 109122159 A CN109122159 A CN 109122159A CN 201811018818 A CN201811018818 A CN 201811018818A CN 109122159 A CN109122159 A CN 109122159A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
- A01G22/25—Root crops, e.g. potatoes, yams, beet or wasabi
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C21/00—Methods of fertilising, sowing or planting
- A01C21/005—Following a specific plan, e.g. pattern
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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
- C05G3/90—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting the nitrification of ammonium compounds or urea in the soil
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
Abstract
The invention discloses a kind of potato plantings to subtract nitrogen synergisting method, and steps are as follows: step 1, the one of which that purity nitrogen dosage is 60kg/ hectares, 90kg/ hectares, 120kg/ hectares, 150kg/ hectares and 180kg/ hectares；Step 2, nitrogen is applied, mode is following one of which: full base manure；+ 30% seedling stage of 70% base manure, a top dressing；+ 20% knot potato fertilizer of 50% base manure+30% seedling stage top dressing, secondary top dressing.Step 3, nitrogen fertilizer potentiating agent is added, nitrogen synergist is the one of which of urease inhibitor NBPT, nitrification inhibitor DCD and nitrification inhibitor CP.Step 4, purity nitrogen and nitrogen synergist are stirred evenly, mixing is in the soil.The present invention has the advantages that 1, nitrogen fertilizer amount is reduced, potato yield is increased, ratio for input and output increases, and remarkable in economical benefits improves the utilization efficiency of nitrogenous fertilizer, meets the fundamental policies that country economizes on resources；2, the reduction of amount of application of nitrogen fertilizer, reducing agriculture goods and materials, excessively investment is conducive to restore soil productivity, increases the sustainable utilization ability of soil to the pressure of environment.
Description
Technical field
The present invention relates to crop planting technical field, in particular to a kind of potato planting subtracts nitrogen synergisting method.
Background technique
Potato is the main cereal crops in China and new century most promising one of Economic And High-yield crop,
It occupies an important position in the production of grain, vegetables, feed and processing industry.2015, China is formal to implement potato staple food grain
Strategy solves Food Security in China and plays positive impetus for promoting Development of Potato Industry.Nitrogen is potato raw
One of long indispensable element, is the key factor for determining potato yield and quality, and appropriate applied nitrogen can promote potato branches and leaves
It is in great numbers, leaf color is dark green, is conducive to the accumulation of photosynthesis and nutrient, have to Tuber yields and protein content is improved compared with your writing
With.But nitrogen application excessively will cause plant excessive growth so that knot potato delay, influences yield, and branches and leaves excessive growth is also vulnerable to disease
Invasion, will cause bigger production loss, also will cause that nitrogen utilization efficiency is low and environmental pressure.Data is shown, excessively applies nitrogen, is made
At the serious nitrogen surplus in China farmland, after the 1990s, China's nitrogen profit margin is about every year at ten thousand tons of 360-546, quite
In purity nitrogen 24-35kg/hm2.World's nitrogenous fertilizer average utilization is 40%-60%, and China is only 30%-35%, and potato nitrogen
Fertile utilization rate is 35%-50%, and some areas are only 20%.Lower utilization rate of nitrogen fertilizer causes that loss of nitrogen fertilizer is serious, resource is unrestrained
Expense, environmental pollution and will increase peasant's production cost reduce farmers' income.
Improve fertilizer utilization efficiency, the key that mitigates environmental pollution, improve yield is the determination of recommended fertilizer.When
Before, subtract nitrogen synergy and mainly pass through control amount of application of nitrogen fertilizer, optimizes method of administration, novel fertilizer substitution conventional fertilizers, with applying organic nothing
Machine fertilizer, the comprehensive utilization of the methods of addition nitrogen synergist.Potato is mainly ammonium nitrogen and nitrate nitrogen to the absorption of nitrogen, and
Different growth stage is larger to the demand difference of nitrogenous fertilizer.Therefore appropriate Nitrogen Top Dressing is conducive to the growth of potato middle and later periods and stem tuber
The raising of yield, and produce on tend to potato applied once nitrogenous fertilizer, although labour cost can be reduced, early period potato raw
Long slowly less to the absorption of nitrogen, late growth is rapid, big to the uptake of nitrogen, asynchronous with the decomposition of nitrogen, causes to be lost tight
Weight, nitrogen use efficiency are low.
Currently, the research of potato nitrogenous fertilizer is concentrated mainly on influence of the nitrogen synergist to potato growth, fertilising side is had ignored
The influence of formula and season.Some nitrogen synergist can slow down the decomposition of nitrogenous fertilizer, by its average release in the breeding time of potato,
But specific amount of application and method of application can play the role of subtracting nitrogen synergy also indefinite, therefore find a kind of nitrogen synergist and rationally make
The utilization efficiency of nitrogenous fertilizer is improved, is just seemed very necessary to be reduced the dosage of nitrogenous fertilizer with method.
Summary of the invention
The present invention in view of the drawbacks of the prior art, provides a kind of potato planting and subtracts nitrogen synergisting method, can effectively solve
Certainly the above-mentioned problems of the prior art.
In order to realize the above goal of the invention, the technical solution adopted by the present invention is as follows:
A kind of potato planting subtracts nitrogen synergisting method, and steps are as follows:
Step 1, purity nitrogen is added in soil；
Purity nitrogen dosage be 60kg/ hectares, 90kg/ hectares, 120kg/ hectares, 150kg/ hectares and 180kg/ hectares wherein
It is a kind of；
Step 2, nitrogen is applied, one of the carrying out of the following three kinds of fertilization modes of selection:
Full base manure；
+ 30% seedling stage of 70% base manure, a top dressing；
+ 20% knot potato fertilizer of 50% base manure+30% seedling stage top dressing, secondary top dressing.
Step 3, addition can reach the nitrogen fertilizer potentiating agent for subtracting nitrogen effect,
Nitrogen synergist is the one of which of urease inhibitor NBPT, nitrification inhibitor DCD and nitrification inhibitor CP.
In order to increase the comparativity of nitrogen synergistic agent in 3, application concentration selects optimal application concentration, respectively urea
The dosage of enzyme inhibitor NBPT is the 1% of purity nitrogen；
The dosage of nitrification inhibitor DCD is the 1% of purity nitrogen；
The dosage of nitrification inhibitor CP is the 0.1% of purity nitrogen.
Step 4, when application, purity nitrogen and nitrogen synergist is stirred evenly with blender, then mixed in the soil.
Preferably, purity nitrogen dosage is 120kg per hectare, spring potato is matched using+30% seedling stage top dressing of 70% base manure
Close 0.1% urease inhibitor NBPT of application.
Preferably, purity nitrogen dosage be 120kg per hectare, potato planted in autumn using+30% seedling stage top dressing of 70% base manure with
0.1% nitrification inhibitor DCD.
Compared with prior art the present invention has the advantages that
1, nitrogen fertilizer amount is reduced, potato yield is increased, ratio for input and output increases, and remarkable in economical benefits improves nitrogenous fertilizer
Utilization efficiency, meet the fundamental policies that economize on resources of country；
2, the reduction of amount of application of nitrogen fertilizer, reducing agriculture goods and materials, excessively investment is conducive to restore soil to the pressure of environment
Soil fertility increases the sustainable utilization ability of soil.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, sub by the following examples, the present invention is done
It is further described.
Embodiment 1: the screening of the most suitable amount of application of nitrogenous fertilizer and best nitrogen synergistic agent
It is test material with potato river taro 117, using two factors randomized blocks designs, A factor is nitrogenous fertilizer (urea) use
5 levels are arranged in amount: N1 is 60kg purity nitrogen per hectare respectively, and N2 is 90kg purity nitrogen per hectare, and N3 is 120kg purity nitrogen per hectare,
N4 is 150kg purity nitrogen per hectare, and N5 is 180kg purity nitrogen per hectare；B factor is different nitrogen synergist type, is arranged 3, point
Not Wei B1 urease inhibitor (NBPT), B2 nitrification inhibitor (DCD), B3 nitrification inhibitor (CP), with do not have to synergist be control
(CK).Nitrogen synergist and urea proportion take it is conventional is most adapted to ratio, i.e. NBPT, DCD, CP is respectively the 1% of urea, 1%,
0.1%, it is stirred evenly, is then blended in test soil with blender.
The uniform no disease and pests harm plant of growing way is taken to be measured at random in potato seedling stage, tuber initiation stage, maturity period.Respectively
Measure nitrate nitrogen content.In seedling stage, tuber initiation stage and maturity period take Rhizosphere sampling, analyze for soil nutrient index determining.
The result shows that different nitrogen synergist have large effect to soil nitrogen variation.Table 1 shows that different nitrogen synergist exist
Seedling stage and florescence impact effect are higher than the maturity period.Soil ammonium is under N1, N2 processing, and CP, DCD processing are compared with the control
Compared with soil ammonium content has been respectively increased 40.1%, 60.2%, 14%, 33.8%；And with the increase for applying nitrogen concentration,
DCD, CP processing are in decreasing trend to soil ammonium content capability of influence.Show under low nitrogen level, nitrogen synergistic agent DCD,
CP inhibits conversion of the soil ammonium-state to nitrate nitrogen, to improve ammonium nitrogen content；Under high nitrogen level, soil ammonium state
Nitrogen progressivelyes reach saturation, and nitrogen synergistic agent influences its content gradually weak.
In tuber initiation stage, compared with seedling stage, the ammonium nitrogen content in soil is presented different degrees of reduction, and with
The increase of amount of nitrogen, each ammonium nitrogen content that handles gradually increases, identical as seedling stage trend.Show as potato is to nitrogen
It absorbs and the extension of fertilization time, nitrogen synergistic agent is to N1 horizontal force decreased effectiveness, and the work of the horizontal nitrogen synergistic agent of N2, N3
It is gradually embodied with effect.In the case where N4, N5 are horizontal, CP processing ammonium nitrogen content is below control, and reaches in the case where N5 is horizontal
Significant difference level (P < 0.05).NBPT processing is compared with a control, and in the case where N1, N2 are horizontal, soil ammonium concentration does not reach aobvious
It writes level of difference (P > 0.05), in the case where N3, N4, N5 are horizontal, soil ammonium concentration is below control, reduces respectively
22.3%, 34.7%, 29.7%, and reach significant difference level (P < 0.05), under the conditions of showing high nitrogen, nitrogen in N4, N5 level
Plain synergist NBPT slows down urea release, to reduce soil ammonium content；Under low nitrogen level, urea is converted to inorganic nitrogen
Speed is fast, influences on later period ammonium nitrogen lower.
Maturity period, soil ammonium was not up to significant difference in each processing in the case where N1, N2, N3 are horizontal, in N4, N5 level
Under, CP processing is above control, and handles the soil ammonium compared with CK up to significant difference (P < 0.05) DCD in N5 level
Content improves 400%.Totally see that the influence of nitrogen fertilizer potentiating agent DCD, CP to soil ammonium is concentrated mainly on seedling stage, blooms
Phase, in seedling stage when, with the increase of nitrogen concentration, DCD, CP function and effect are gradually being successively decreased, and in the case where N3 is horizontal, impact effect is the most
Obviously.
1 different times of table respectively handle the content difference (g/Kg) of lower soil ammonium-state
Nitrogen fertilizer potentiating agent is affecting content of soil nitrate-N in various degree, and in seedling stage, tuber initiation stage influence degree
Greater than the maturity period.Table 2 shows that DCD, CP processing content of soil nitrate-N are below control, in the case where N2, N3 are horizontal, DCD processing soil
Earth nitrate nitrogen content reduces 51.3%, 32.7% respectively, reaches significant difference (P < 0.05) in N2 level；CP handles soil
Nitrate nitrogen content reduces 38.2%, 38.0% respectively, reaches significant difference (P < 0.05) in N3 level.It is each under N4, N5 level
Processing is not up to significant difference (P > 0.05).NBPT compared with CK, under each nitrogen level be not up to significant difference (P >
0.05).Illustrating under low nitrogen level, nitrogen synergistic agent DCD, CP can significantly reduce potato seedling stage content of soil nitrate-N, and
Under high nitrogen level, DCD and CP not can significantly reduce potato set phase content of soil nitrate-N.
2 different times of table respectively handle the content difference (g/Kg) of lower nitrified nitrogen in soil
Under tuber initiation stage, each nitrogen level, compared with CK, CP processing reduces content of soil nitrate-N, respectively
32.0%, 48.0%, 47.5%, 89.5%, 80.1% is reduced, nitrate nitrogen inhibitory effect is than under low nitrogen level under high nitrogen level
Inhibitory effect it is obvious.Main cause is in this period, and soil ammonium nitrate nitrogen is with the increase of nitrogen amount applied, and nitrate nitrogen content is also
It gradually increases.Compared with CK, in N1, N2, N3 level, content of soil nitrate-N is not up to significant water for NBPT, DCD processing
Flat (P > 0.05) significantly reduces content of soil nitrate-N (P < 0.05), NBPT is reduced respectively in N4, N5 level
78.9%, 58.6%, DCD reduce 78.9%, 58.6% respectively.Illustrate under this period, low consistency conditions, nitrogen synergist is made
With gradually weakening, but under the conditions of high nitrogen, content of soil nitrate-N can be effectively reduced in nitrogen synergist, and CP inhibitory effect is superior to it
He is handled.
At the maturity period of potato, in N1, N2, N3 level, each content difference for handling nitrified nitrogen in soil is not significant,
And nitrate nitrogen content is all lower.Nitrate nitrogen content in N4 level, control treatment is high compared with other processing, is added to nitrification suppression
Nitrate nitrogen content in the processing of preparation is all more low, illustrates that nitrification inhibitor plays the role of good inhibition nitrification.But
N5 is horizontal, and the nitrate nitrogen content highest of CP processing, this should be related with the length of time that CP delays nitrification, at this time nitrate nitrogen
It releases out in the later period.
Potato is carried out to survey production and volume analysis, from table 3 the results show that the yield of potato first with applying nitrogen concentration
Increase and increase, extreme value is reached in N3 level, is then just declined with the increase of amount of nitrogen.NBPT processing is in N3 level
Yield reaches highest, and DCD reaches highest in N3 level, and NBPT reaches highest in N1 level, shows at 120kg/ hectares of amount of nitrogen
Under, NBPT and DCD effect of increasing production is best.
Table 3: influence (kg) of the nitrogen synergist to potato yield
It integrates from potato harvest yield and soil ammonium-state and nitrate nitrogen in terms of the variation of each growthdevelopmental stage of potato,
In the case where per hectare applies 120kg, 0.1% urease inhibitor NBPT of compounding application and 0.1% nitrification inhibitor DCD nitrogenous fertilizer
Synergistic effect is more excellent.
Example 2: influence of the synergist method of application to spring and autumn potato yield and soil nitrogen
It is test material with toxicity-removing white potato river taro 117, under the premise of unified per hectare application 120kg, experiment is taken
Dual factors RANDOMIZED BLOCK DESIGN, A factor fertilization mode: full base manure (A1), 70% base manure+30% seedling stage top dressing (A2), 50% base
Fertile+20% knot potato of+30% seedling stage top dressing is fertile (A3)；B factor nitrogen synergist: dicyandiamide DCD (B1), nitrogen synergist NBPT (B2),
It is not added with nitrogen synergist (CK).Using potted plant experiment.
9 basins of each processing, every basin 6kg soil, 4 seedlings of every basin sowing, 5 centimetres of seed level.Every basin applies 10.86g urea altogether,
NBPT, DCD are the 1% of urea.Tiller fertilizer is applied after neat seedling 20d, florescence applies knot potato fertilizer.Soil nitrate nitrogen determination content
Select determined by ultraviolet spectrophotometry；Soil ammonium selects indophenol blue colorimetry measurement.
As shown in Table 4, it in the case where being not added with nitrogen synergist, is compared with A1, A3 processing, A2 improves spring sowing potato tuber initiation stage
Soil ammonium content 14.1%, 30.4%, it is unhorizontal up to significant difference；Significantly improve potato planted in autumn tuber initiation stage ammonium state
875.6%, the 295.5% of nitrogen content.Show that A2 can improve potato soil ammonium content, and potato planted in autumn influence is greater than
Spring sowing potato.When to the stem tuber maturity period, the processing soil ammonium that potato planted in autumn applies top dressing is significantly higher than A1 processing, spring Ma Ling
Potato is then without significant difference.Main cause is that potato planted in autumn later period light temperature is weaker, and potato is weaker to the absorption of nitrogen, Soil Nitrogen generation
It thanks weaker, it is higher that nitrogen is left in soil.
The influence (g/Kg) of 4 Different Fertilization mode of table and nitrogen synergist to spring and autumn potato soil ammoniacal nitrogen
Note: same column lowercase difference represents significant difference (p < 0.05).Following table is same.
Nitrogen fertilizer potentiating agent significantly improves spring and autumn potato tubers and forms phase soil ammonium content.Top dressing, which is matched, to be applied
DCD and spring, potato planted in autumn tuber initiation stage soil ammonium content are significantly improved with applying NBPT ratio and being unworthy of applying nitrogen synergist
124.3%, 198.1% and 31%, 260%.Show not only improve potato ball with applying NBPT, DCD under the conditions of a top dressing
Stem forms phase soil ammonium content, and different planting season shows different, a top dressing and nitrogen synergist with applying pair
The function and effect of potato planted in autumn ammonium nitrogen are better than spring sowing potato.
It is aobvious with potato planted in autumn soil ammonium content under applying DCD processing in the top dressing of stem tuber maturity period, secondary top dressing
It writes to match higher than full base manure and DCD and applies processing.Secondary top dressing and DCD reach with processing (A3B1) soil ammonium content highest is applied
27.94g/Kg.Top dressing and NBPT are applied with applying processing (A2B2) soil ammonium content and be significantly higher than full base manure and match with NBPT
Processing (A1B2) and secondary top dressing and NBPT, which match, applies processing (A3B2).
5 the results are shown in Table to soil nitrate-N variation.It is compared with A1, A3 processing, spring sowing potato stem tuber shape is respectively increased in A2
It is horizontal up to significant difference with A3 at phase content of soil nitrate-N 7.4%, 52.6%；Significantly improve potato planted in autumn tuber character
Phase content of soil nitrate-N 66.0%, 45.6%.In the stem tuber maturity period, each fertilization mode influences soil nitrate-N not significant.
Nitrogen fertilizer potentiating agent significantly improves spring and autumn potato tubers and forms phase content of soil nitrate-N.Top dressing, which is matched, to be applied
DCD and spring, potato planted in autumn soil ammonium content 18.4% are significantly improved with applying NBPT ratio and being unworthy of applying nitrogen synergist,
31.6%, 33.9%, 31.6%.The spring and autumn potato tubers formation phase can be significantly improved by showing that nitrogen synergist and a top dressing match to apply
Content of soil nitrate-N.In the stem tuber maturity period, without significant difference.
The influence (mg/Kg) of 5 Different Fertilization mode of table and nitrogen synergist to spring and autumn potato plant nitrate nitrogen
As shown in Table 6, in the case where being not added with nitrogen synergist, a top dressing and secondary top dressing are than full base manure spring, potato planted in autumn list
Strain output increased 35.0%, 136.1%, 34.1%, 46.9% reaches significant difference in secondary top dressing processing.Show top dressing
Potato yield can be improved, and secondary fertilizing type effect of increasing production is better than a fertilizing type；Fertilization mode increases production to spring Ma Ling
Potato effect is better than potato planted in autumn.
Nitrogen fertilizer potentiating agent with increasing potato yield under applying, is reducing horse with applying down with secondary top dressing with a top dressing
Bell dry matter yield.Top dressing is with applying DCD and improve spring, potato planted in autumn yield with applying NBPT ratio and being unworthy of applying nitrogen synergist
53.3%, 112.0%, 28.4%, 8.4%, spring sowing potato significant difference；Secondary top dressing is unworthy of applying nitrogen synergist with applying DCD ratio
Reduced spring, potato planted in autumn yield 69.3%, 25.1%, spring sowing potato significant difference, secondary top dressing is with applying NBPT underproduction difference
It is not significant.Show that rationally the yield of potato can be effectively increased with applying nitrogen synergist, one time top dressing effect is best, but different
Season has differences nitrogen synergist effect of increasing production, and spring sowing potato effect of increasing production is greater than potato planted in autumn.
The influence (g) of 6 Different Fertilization mode of table and nitrogen synergist to spring and autumn potato single plant yield
Those of ordinary skill in the art will understand that the embodiments described herein, which is to help reader, understands this hair
Bright implementation method, it should be understood that protection scope of the present invention is not limited to such specific embodiments and embodiments.Ability
The those of ordinary skill in domain disclosed the technical disclosures can make its various for not departing from essence of the invention according to the present invention
Its various specific variations and combinations, these variations and combinations are still within the scope of the present invention.
Claims (3)
1. a kind of potato planting subtracts nitrogen synergisting method, which is characterized in that steps are as follows:
Step 1, purity nitrogen is added in soil；
Purity nitrogen dosage is wherein the one of 60kg/ hectares, 90kg/ hectares, 120kg/ hectares, 150kg/ hectares and 180kg/ hectares
Kind；
Step 2, nitrogen is applied, one of the carrying out of the following three kinds of fertilization modes of selection:
Full base manure；
+ 30% seedling stage of 70% base manure, a top dressing；
+ 20% knot potato fertilizer of 50% base manure+30% seedling stage top dressing, secondary top dressing；
Step 3, addition can reach the nitrogen fertilizer potentiating agent for subtracting nitrogen effect；
Nitrogen synergist is the one of which of urease inhibitor NBPT, nitrification inhibitor DCD and nitrification inhibitor CP；
In order to increase the comparativity of nitrogen synergistic agent in 3, application concentration selects optimal application concentration, and respectively urase presses down
The dosage of preparation NBPT is the 1% of purity nitrogen；
The dosage of nitrification inhibitor DCD is the 1% of purity nitrogen；
The dosage of nitrification inhibitor CP is the 0.1% of purity nitrogen；
Step 4, when application, purity nitrogen and nitrogen synergist is stirred evenly with blender, then mixed in the soil.
2. a kind of potato planting according to claim 1 subtracts nitrogen synergisting method, it is characterised in that: purity nitrogen dosage is
120kg per hectare, spring potato use 70% base manure+30% seedling stage top dressing compounding application, 0.1% urease inhibitor NBPT.
3. a kind of potato planting according to claim 1 subtracts nitrogen synergisting method, it is characterised in that: purity nitrogen dosage is
120kg per hectare, potato planted in autumn is using+30% seedling stage top dressing of 70% base manure and 0.1% nitrification inhibitor DCD.
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| CN109804876A (en) * | 2019-03-19 | 2019-05-28 | 云南省农业科学院经济作物研究所 | A kind of big spring sowing potato postponing nitrogen health care yield-increasing cultivation method |
| CN111837555A (en) * | 2020-08-06 | 2020-10-30 | 中国科学院亚热带农业生态研究所 | Method for reducing nitrogen fertilizer dosage and ammonia volatilization loss of farmland |
| CN111837555B (en) * | 2020-08-06 | 2022-08-02 | 中国科学院亚热带农业生态研究所 | Method for reducing nitrogen fertilizer dosage and ammonia volatilization loss of farmland |
| CN113287475A (en) * | 2021-05-18 | 2021-08-24 | 济宁市农业科学研究院 | Method for improving commercial potato rate and dry matter content of potatoes |
| CN113615522A (en) * | 2021-08-20 | 2021-11-09 | 江苏省农业科学院 | High-yield high-efficiency low-non-point source pollution risk fertilization management technology for chives |
| CN113950922A (en) * | 2021-10-09 | 2022-01-21 | 青海师范大学 | Technology for reducing gaseous nitrogen loss after urea application in degraded alpine meadow |
| CN115152389A (en) * | 2022-08-09 | 2022-10-11 | 四川农业大学 | Emission reduction method for ammonia volatilization by nitrogen-reduction co-dispensing urease and biological nitrification inhibitor |
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Application publication date: 20190104 |