CN107155486A - A kind of rice in saline-alkali field nitrogenous fertilizer decrement fertilizing method - Google Patents
A kind of rice in saline-alkali field nitrogenous fertilizer decrement fertilizing method Download PDFInfo
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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
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Abstract
The invention discloses a kind of rice in saline-alkali field nitrogenous fertilizer decrement fertilizing method, it is characterised in that methods described comprises the following steps：(1) applied fertilizer before level land：After the desalinization of soil by flooding or leaching of plot soaked field, during level land, base manure is applied, the base manure is at least one of calcium superphosphate and slow-release compound fertilizer；Amount of application is 50 80Kg/ mus；(2) period of seedling establishment applies fertilizer：Using at least one of slow-release compound fertilizer, urea, potassium sulfate, sowing amount is 20 30Kg/ mus；(3) jointing stage applies fertilizer：Using potassium sulfate fertilizers, amount of application is 5 6Kg/ mus；(4) young ear period fertilising：Using at least one of slow-release compound fertilizer and urea, amount of application is 10 20Kg/ mus.This method can promote paddy rice stable yields high-quality, strengthen plant resistance；Nitrogenous fertilizer decrement 15% has significant impact to rice tillering, leaf age, plant height, yield index, has surmounted traditional salt-soda soil Rice Cropping fertilization mode：Base manure, tillering fertilizer, ear period fertilizer, granulated fertilizer.
Description
Technical field
The present invention relates to proportion of crop planting technical field, and in particular to a kind of rice in saline-alkali field nitrogenous fertilizer decrement fertilizing method.
Background technology
In Rice Cropping field, rationally have become China using the Tidal Flat Resources rice cultivation of coastal area and expand water
The emphasis of rice cultivated area research.The soil of Coastal beach is mainly salt-soda soil, land resource very abundant, but salt content
It is high, soil content is big, the content of organic matter is low, soil granular structure is poor, soil is very barren, and soil rich water buffer capacity
Not strong, causing salt-soda soil to plant, common salt tolerance crop and kind growth is difficult, yield poorly.
The water resource in Coastal beach area is more sufficient, and paddy rice turns into preferred crop.But according to statistics, 74% along seabeach
Apply salt-soda soil and be in and lack phosphorus state, and have more than 95% for invalid phosphorus, most phosphate fertilizer and saline-alkali soil in being manured into soil
Ca in earth2+、Fe2+Etc. the phos-phate forms for being combined into slightly solubility, accelerate soil salination and soil it is hardened, it is traditional
Rice Cropping applies substantial amounts of nitrogenous fertilizer, and the quality of rice is reduced while crop resistance is weakened, causes crop disease to add
Weight, water pollution, the wasting of resources.Salt-soda soil salt damage is serious, is mainly shown as that paddy rice percentage establishment of seedling is low, tiller amount is greatly decreased, raw
Long amount is small, and heading is difficult, have cause to ear or phimosis, grain husk flower fertility difference and mass of 1000 kernel are low.Therefore, rational fertilising
Technology just can guarantee that rice in saline-alkali field plants high yield.
Traditional two ends formula seedling raising method, the area good suitable for land fertility is not suitable for salt-soda soil seedling, therefore, seedling
Mode also determines the strong weak of rice shoot, it is necessary to select suitable seedling raising method, selects suitable seedling raising ground substance, cultivate it is disease-free,
The healthy and strong, rice shoot of well developed root system.Salt-soda soil rice cultivation, will select rational tillage system reform and desalinization of soil by flooding or leaching salt discharge to handle, selection is closed
Suitable fertilizing management technology.
Coastal beach saline-alkali soil ground Rice Cropping different times, Different Fertilization method, Different Fertilization consumption, give birth to paddy rice
Length, yield, the influence of rice matter, are that salt-soda soil rice cultivation reduces fertilizer application frequency, dose, mitigates field management personnel work by force
Degree, raising fertilizer efficiency, optimization rice matter, therefore emphasis and difficult point as current Rice Cropping, study a kind of suitable Coastal beach salt
Alkali the rational fertilization mode of Rice Cropping necessitate.
The content of the invention
For deficiency present in background technology, it is an object of the invention to provide a kind of fertilising of rice in saline-alkali field nitrogenous fertilizer decrement
Method, using nitrogenous fertilizer sowing amount is reduced, improves fertilization mode, can effectively improve soil environment, promotes paddy growth, increase paddy rice
Anti- stress ability, improve paddy rice yield and quality.
To achieve the above object, the present invention provides a kind of rice in saline-alkali field nitrogenous fertilizer decrement fertilizing method, it is characterised in that institute
The method of stating comprises the following steps：
(1) applied fertilizer before level land：After the desalinization of soil by flooding or leaching of plot soaked field, during level land, base manure is applied, the base manure is gentle for calcium superphosphate
Release at least one of composite fertilizer；Amount of application is 50-80Kg/ mus；
(2) period of seedling establishment applies fertilizer：To topdress for the first time, using at least one of slow-release compound fertilizer, urea, potassium sulfate, apply
Enter amount for 20-30Kg/ mus；
(3) jointing stage applies fertilizer：Using potassium sulfate fertilizers, amount of application is 5-6Kg/ mus；
(4) young ear period fertilising：To topdress for the second time, using at least one of slow-release compound fertilizer and urea, amount of application is
10-20Kg/ mus.
Preferably, in being applied fertilizer before step (1) level land, calcium superphosphate mixes administration with slow-release compound fertilizer, and amount of application was phosphorus
Sour calcium 40Kg/ mus, 20Kg/ mus of slow-release compound fertilizer.Base manure applies slow-release compound fertilizer and urea, can improve fertilizer efficiency, make fertilizer efficiency steady
It is long, reduce and escape while fertilizing soil.
It is further preferred that the slow-release compound fertilizer in base manure is N-P2O5-K2O percentage compositions are combined for 20-20-5 sustained release
Fertilizer.
Preferably, step (2) period of seedling establishment applies fertilizer：Slow-release compound fertilizer sowing amount is 14Kg/ mus, urea sowing amount is 6Kg/
Mu, potassium sulfate sowing amount are 5Kg/ mus.Period of seedling establishment, which applies urea and slow-release compound fertilizer, can increase the tillering ability of paddy rice, to water
The raising of rice number of productive ear plays a major role.
Preferably, step (3) jointing stage applies fertilizer：Using potassium sulfate fertilizers, amount of application is 5Kg/ mus.In period of seedling establishment, jointing
Phase applies potassium sulfate, larger to promoting Root Growth of Rice, enhancing rice shoot resistance to play the role of, and can also increase paddy rice anti-fall
Volt, disease resistance, the degeneration for preventing grain husk flower.
Preferably, the young ear period fertilising of step (4)：Slow-release compound fertilizer sowing amount is 10Kg/ mus, and urea sowing amount is 4Kg/
Mu.Young ear period, which applies slow-release compound fertilizer and urea, can increase grains per panicle, prevent grain husk flower from degenerating, increasing stem sheath reserve substance
Accumulation, while improve blade photosynthesis, increase grain weight, reduce unfilled gtainses.
Preferably, before step (1), after late fall rice harvesting during soil moisture content 25%-30%, plough 20-25cm,
Irrigation and drainage canal is cleared up and repaired before winter Liang Long, spring rotary tillage drought leveling, spring site preparation, is kept unimpeded.These prior steps
The Rice Cropping after plantation can be caused to be easy to fill draining.
It is further preferred that carrying out soaked field pressure alkali cleaning salt after clearing up and having repaired irrigation and drainage canal, concrete mode is：Pour water
Soaked field, pressure salt are after 2 days, draining.The purpose in flood soaked field is to ensure pressure alkali quality.
More preferably, flatly carried out in 8-10 days before the rice transplanting date.
Preferably, seedling raising ground substance is bacterium rod：Local soil=2:1；The bacterium rod is the bacterium rod after bacterium, and fully fermentation is rotten
It is ripe；The seedling raising method is big plate seedling raising, the application rate of 125g/ disks.
Preferably, the salt-soda soil is that soil salt content is 0.3%, and the rice shoot for choosing 25 ages in days is transplanted, rice transplanting mark
Standard is line-spacing 30cm, spacing in the rows 15cm, per 3-5, cave base seedling.
More preferably, the water layer management after rice transplanting mainly includes：
Seedling-protection water：2/3 water seedling-protection of height of seedling is filled before being turned green after rice transplanting；
Tiller water：Whole tillering stage fills the deep shallow waters of 3-5cm, to heat promotion tiller；
Dry field：3-5 days draining dry fields 5-7 days before effective tillering peak period, dry field standard is the non-sticky pin in rice field, and field is met personally white
Root, leaf endures color depth；
Protect fetal fluids：Pregnant tiller fills 4-6cm running water, deep water shield tire to before earing；
Draining：The stage of yellow ripeness starts draining.
Beneficial effects of the present invention：
(1) rice in saline-alkali field nitrogenous fertilizer decrement fertilizing method of the present invention, it is possible to achieve the reducing application amount of nitrogenous fertilizer, is reduced
The pollution of environment.
(2) rice in saline-alkali field nitrogenous fertilizer decrement fertilizing method of the present invention, can improve the root growth of paddy rice, make it
Prosperity, improves the anti-adversity ability of paddy rice.
(3) rice in saline-alkali field nitrogenous fertilizer decrement fertilizing method of the present invention, input is reduced, and return is high, it can be ensured that soil
The sustainable development of earth.
(4) rice in saline-alkali field nitrogenous fertilizer decrement fertilizing method of the present invention, can improve rice quality, improve yield, carry
The high market competitiveness.
Rice in saline-alkali field nitrogenous fertilizer decrement fertilizing method of the present invention, application method is simple, simplifies fertilizer application frequency, drops
Low cost, is easy to promote the use of a large area.
The present invention is realized using following principle：Base manure of the present invention applies slow-release compound fertilizer and urea, can improve fertilizer efficiency, make
Fertilizer efficiency is surely long, reduces escaping while fertilizing soil.Period of seedling establishment, which applies urea and slow-release compound fertilizer, can increase the tiller of paddy rice
Ability, the raising to paddy rice number of productive ear plays a major role.Potassium sulfate is applied in period of seedling establishment, round bar jointing stage, to promoting paddy rice
Root growth, enhancing rice shoot resistance play the role of it is larger, can also increase lodging resistance in rice, disease resistance, prevent grain husk flower move back
Change.Young ear period, which applies slow-release compound fertilizer and urea, can increase grains per panicle, prevent grain husk flower from degenerating, increasing stem sheath reserve substance
Accumulation, while improve blade photosynthesis, increase grain weight, reduce unfilled gtainses.
The present invention is that applicant passes through the substantial amounts of field test of early stage, and using the growth characteristics of paddy rice, selection is adapted to saline and alkaline
The salt tolerant strain of ground growth, by suitable matrix seedling, obtains strong sprout, plot is turned over by the winter ploughing desalinization of soil by flooding or leaching, using different
Fertilization mode, dose checking, obtain the fertilizing method of science, can not only reduce the consumption of nitrogenous fertilizer 15%, moreover it is possible to greatly improve
The yield of paddy 7.53%.
Brief description of the drawings
Fig. 1 shows influence of the embodiment Different Fertilization mode to Plant Height of Rice；
Fig. 2 a show influence result of the embodiment Different Fertilization mode to paddy rice underground fresh weight；
Fig. 2 b show influence result of the embodiment Different Fertilization mode to paddy rice underground dry weight；
Fig. 3 a show influence result of the embodiment Different Fertilization mode to paddy rice aerial part fresh weight；
Fig. 3 b show influence result of the embodiment Different Fertilization mode to paddy rice aerial part dry weight.
Embodiment
The present invention is further illustrated in conjunction with the embodiments, it should explanation, and the description below is merely to explain this
Invention, is not defined to its content.
The cultivation of rice shoot：
Rice seed YB789：Examined by " Ministry of Agriculture's product and transgenic product quality safety supervisory detection center (Tianjin) "
Test qualified seed rice.Select bacterium rod：Local soil=2:1 seedling raising ground substance brings out rice shoot.
Nitrogen decrement field experiment：
For examination fertilizer：
Urea：Commercially available, rich fertilizer plant production is moistened in Jinan City；
Calcium superphosphate：It is commercially available, the production of Jinan Qi Yunjianhua Co., Ltds；
Slow-release compound fertilizer：N-P2O5-K2O percentage compositions are 20-20-5, Sanmenxia Gorge miss slow-release compound fertilizer industry Co., Ltd
Production；
Potassium sulfate fertilizers：Commercially available, rich fertilizer plant production is moistened in Jinan City.
Embodiment and totally 4 groups of comparative example, random alignment, 3 repetitions, each plot area 88m2.Transplanting pattern is artificial
Rice transplanting, density of transplants is 1.8 ten thousand caves/mu.
Honda is managed
After late fall rice harvesting during soil moisture content 25%-30%, plough 20cm or so, winter Liang Long, spring rotary tillage drought
Leveling.Irrigation and drainage canal is cleared up and repaired before spring site preparation, is kept unimpeded, it is easy to fill draining, soaked field pressure alkali cleaning salt, bubble of pouring water
Field, pressure salt are after 2 days, and flood soaked field is wanted in draining, it is ensured that pressure alkali quality；Flatly, carried out in 8-10 days before the rice transplanting date.It is described
Alkaline land soil salt content is 0.3%.Select 25 age in days rice shoots to be transplanted, rice transplanting standard be line-spacing 30cm, spacing in the rows 15cm, often
3-5, cave base seedling.
Seedling-protection water：2/3 water seedling-protection of height of seedling is filled before being turned green after rice transplanting；
Tiller water：Whole tillering stage fills the deep shallow waters of 3-5cm, to heat promotion tiller；
Dry field：3-5 days draining dry fields 5-7 days before effective tillering peak period, dry field standard is the non-sticky pin in rice field, and field is met personally white
Root, leaf endures color depth；
Protect fetal fluids：Pregnant tiller fills 4-6cm running water, deep water shield tire to before earing；
Draining：The stage of yellow ripeness starts draining.
F1-F3 is embodiment, and CK is comparative example.
CK：Conventional fertilization, urea total amount is 35Kg/ mus；Dose be according to equivalent nitrogenous fertilizer nitrogen pool calculate, its with
F1 such as is at the nitrogen quantity.
F1：Using the fertilization method with the nitrogen quantity such as conventional fertilizer application, slow-release compound fertilizer mixes fertilising with urea, and total amount is 64Kg/
Mu；
F2：Using the fertilization method for subtracting nitrogen quantity 15% than F1, slow-release compound fertilizer mixes fertilising with urea, and total amount is 54Kg/ mus；
F3：Using the fertilization method for subtracting nitrogen quantity 20% than F1, slow-release compound fertilizer mixes fertilising with urea, and total amount is 44Kg/ mus.
Each embodiment and comparative example, apply 40Kg/ mu of calcium superphosphate at level land, using 10Kg/ mus of potassium sulfate, divide
Impose for 2 times, impose apply 5Kg/ mu in period of seedling establishment for the first time, impose use 5Kg/ mus in the round bar jointing stage for the second time；Specifically
Nitrogenous fertilizer usage amount and use time are shown in Table 1.
The different disposal nitrogen fertilizer amount of table 1 and time of application contrast table (slow-release compound fertilizer abbreviation slow-release compound fertilizer)
Note：Slow-release compound fertilizer+urea refers to difference consumption when slow-release compound fertilizer and urea are used in mixed way.
Plant sample collection and index determining
1st, the measure of paddy rice leaf age dynamic indicator
Leaf age is instituted an inquiry in 4 leaves, start recording leaf age in the period of the first complete leaf can be seen clearly.
Points for investigation is determined：On Chi Geng sides on mileage the third line, 10 caves that selection cave number is uniform, cave strain number is close is adjust
Check as and doing on both sides mark, to ensure the accuracy of respondent, the plant of points for investigation will be with putting outer plant school repeatedly
Just, the Leaves on main stem of investigation all makes upper mark of red paint, and rice leaf hour leaf spoke is narrower, uses "×" mark, leaf spoke
Leaf age number can be write when wide.Each kind is by points for investigation is set on June 20,28 days, July 6, and investigation is once to neat within every 8 days
Ear period is investigated 8 times altogether.
Leaf age tracking seedling selection：In 10 caves of investigation, the seedling that representational young plant matter is good, blade is sound is selected per cave
Seedling, carries out leaf age investigation mark on stem leaf.
Labeling method：The leaf age of mark point must be accurate, and all point on odd number leaf, originates leaf since 3 leaves to leaf age, with
Track is to full heading time, with red paint respectively in one point of the 3rd leaf intermediate point, the 5th point of leaf intermediate point 2, the 7th point of leaf intermediate point 3
Or the leaf ages number such as 3,5,7 are write, by that analogy, it is ensured that the accuracy of leaf age tracking.
Leaf age value is calculated：Also reveal the sharp overall process exposed to pulvinus using N as a leaf age birth process, and calculate leaf age.
First, the length of N leaves is estimated, 5cm is added as the length of N leaves using the length of N leaf inferior lobes, the length of the actual extraction of N leaves is then measured,
Again divided by estimation N leaves length, as the ratio of N leaf length, now leaf age=N-1+ ratio values.
Leaf age is also known as " mobile jib goes out the leaf phase ", and leaf age is the investigation for going out leaf situation to mobile jib, and leaf age can be used as grasp paddy rice
Growth and development dynamics and growing way appearance, it is as shown in table 2 to Different Fertilization mode paddy rice leaf age dynamic result.
The Different Fertilization mode paddy rice leaf age dynamic contrast table of table 2
From the table 2 of paddy rice leaf age comparative result as can be seen that 8 times investigation data display, conventional fertilizer application CK groups, etc. nitrogen
The F1 groups of amount, the F2 groups for subtracting nitrogen quantity 15% have significant advantage than subtracting the F3 group leaf ages of nitrogen quantity 20%, and this shows to subtract nitrogen quantity
15% does not influence on the leaf age of paddy rice, but subtracts the leaf age that nitrogen quantity 20% significantly affects paddy rice.
2nd, rice tillering dynamic indicator is determined
Rice plant of tillering stage length 30 days, first 25 days is productive tiller stage, is within latter 5 days the ineffective tillering phase.Experimental plot fixed point choosing
10 plants are selected, from after the rice striking root phase, since exposing the blade tip of first leaf of first tiller, every investigation in 3 days once,
Investigate 8 times altogether.
As shown in table 3 is summarized to Different Fertilization mode rice tillering dynamic result.
The Different Fertilization mode rice tillering dynamic contrast table of table 3
From the table 4 of rice tillering dynamic result as can be seen that applying F1, F2, F3 group of base manure than not applying base manure
Tiller twice is advantageous before CK groups, and this shows that base manure applied nitrogen can give birth to rice tillering.F2 is equal in whole tillering stage
Show larger advantage, when showing to subtract nitrogen quantity 15%, rice tillering can be promoted, and phosphate fertilizer, potash fertilizer compounding application not only
Nitrogen quantity administration can be reduced, rice tillering can also be promoted.
3rd, the measure of Plant Height of Rice
Full heading time paddy rice (80% fringe is extracted out) is gathered, side row the inside 3rd, 4 rows continuously take 12 caves.Hold a cave
Smooth out with the fingers upwards, it is the average plant height in the cave to be measured by ground to the second leaf, is determined by cave, calculates average value.
The plant height comparative result of paddy rice is contrasted as shown in figure 1, combining F1, F3 group with CK, subtracts the length of the F2 groups of nitrogen quantity 15%
Significantly, plant height has reached 73.0cm to gesture, next to that the F1 groups with the nitrogen quantity such as CK groups, plant height has reached 71.5cm, as a result shown institute
A nitrogen fertilizer application part is used as base manure, can improve the plant height of paddy rice, the plant height of paddy rice can be significantly improved by subtracting nitrogen quantity 15%, still
The growth of rice plant is influenceed when subtracting nitrogen quantity 20%.
4th, paddy rice is on the ground, underground is dry, the measure of fresh weight
Full heading time paddy rice (80% fringe is extracted out) is gathered, side row the inside 3rd, 4 rows continuously take 12 caves.
Fresh weight is determined：Plant is cleaned, root is cut, determination data, seeks every cave average value respectively, ground, underground part is obtained
Divide fresh weight.
Dry weight is determined：Ground, underground part are split and dried 72 hours at being dried 1 hour, 70 DEG C at 105 DEG C of baking oven, is claimed after cooling
Weight.
The root of paddy rice constitutes the under ground portion of paddy rice, primarily serves absorption, and paddy rice can absorb soil by root
In moisture, inorganic salts and some micromolecular compounds, root system is more flourishing, and paddy rice more adapts to the stress of external environment, from
Deeper or farther soil layer absorbs nutrient, adaptability of the increase paddy rice to environment.Shadow of the Different Fertilization mode to rice root
Result is rung as shown in Fig. 2 wherein Fig. 2 a are the comparative result of root system fresh weight, and Fig. 2 b are weight of root system comparative result.
The accumulation of the fresh weight and organic matter of paddy rice aerial part is proportionate, and accumulation is more in same time, represents and plants
The respiration rate of strain is faster, while also can be shown that the photosynthesis of plant is stronger.The results contrast of paddy rice aerial part is as schemed
3, wherein Fig. 3 a represent aerial part fresh weight comparative result, and Fig. 3 b represent aerial part dry weight comparative result.
Shown by Fig. 2, Fig. 3 result, subtract the grounds of the F2 treatment groups of nitrogen quantity 15%, the dry weight and fresh weight of plant seedlings of under ground portion due to it
His treatment group, this shows that nitrogen decrement 15% can dramatically increase the root growth ability of paddy rice, can have paddy rice stronger resistance to
By Saline Alkali Stress ability；The accumulation of paddy rice aerial part dry can be increased by subtracting nitrogen quantity 15% simultaneously, promote the photosynthetic of paddy rice
Ability to function, increases the accumulation of rice plant organic matter.
5th, rice yield index determining
Paddy rice mu cave number, mu number of productive ear, fringe bear fruit grains, setting percentage, mass of 1000 kernel are determined in rice maturity, and determines mu
Yield, the rice yield index determining result of different fertilization is as shown in table 4.
The Different Fertilization mode of table 4 is contrasted to rice yield Index Influence
In salt-soda soil rice cultivation, the Reasonable input of nitrogenous fertilizer is the crucial guarantor for ensureing the growth of paddy rice stalwartness and capturing high yield
Barrier.Different times, Different Fertilization amount, Different Fertilization method have certain influence to paddy rice number of productive ear and fringe grain, especially right
The influence of number of productive ear, mu cave number and mass of 1000 kernel is most notable, and the result of table 5 shows, the F2 fertilizer treatments for subtracting nitrogen quantity 15% can
To increase production 7.53%, the F1 fertilizer treatments group volume increase 6.16% with the nitrogen quantity such as CK groups, but subtract the F3 fertilizer treatments of nitrogen quantity 20%
Yield 3.71% is reduced, illustrates that influence of the growth period nitrogenous fertilizer in paddy rice to its yield is huge, can be carried using slow-release compound fertilizer
The yield of high paddy rice.
A kind of rice in saline-alkali field nitrogenous fertilizer decrement fertilizing method of the present invention, can effectively improve the tiller energy of paddy rice
Power, the plant height for increasing paddy rice, improve the photosynthesis of paddy rice, improve the ability of Rice Resistance Saline Alkali Stress, can also effectively carry
The yield 7.53% of high paddy rice；The usage amount of nitrogenous fertilizer can not only be reduced, moreover it is possible to greatly improve soil to utilization to fertilize
Rate.
Claims (10)
1. a kind of rice in saline-alkali field nitrogenous fertilizer decrement fertilizing method, it is characterised in that methods described comprises the following steps：
(1) applied fertilizer before level land：After the desalinization of soil by flooding or leaching of plot soaked field, during level land, base manure is applied, the base manure is that calcium superphosphate and sustained release are multiple
At least one of Hefei；Amount of application is 50-80Kg/ mus；
(2) period of seedling establishment applies fertilizer：Using at least one of slow-release compound fertilizer, urea, potassium sulfate, sowing amount is 20-30Kg/ mus；
(3) jointing stage applies fertilizer：Using potassium sulfate fertilizers, amount of application is 5-6Kg/ mus；
(4) young ear period fertilising：Using at least one of slow-release compound fertilizer and urea, amount of application is 10-20Kg/ mus.
2. nitrogenous fertilizer decrement fertilizing method as claimed in claim 1, wherein：
In being applied fertilizer before step (1) level land, calcium superphosphate mixes administration with slow-release compound fertilizer, and amount of application is 40Kg/ mus of calcium superphosphate,
20Kg/ mus of slow-release compound fertilizer.
3. nitrogenous fertilizer decrement fertilizing method as claimed in claim 1, wherein：Slow-release compound fertilizer in base manure is N-P2O5-K2O hundred
Divide the slow-release compound fertilizer that content is 20-20-5.
4. nitrogenous fertilizer decrement fertilizing method as claimed in claim 1, wherein：Step (2) period of seedling establishment applies fertilizer：Slow-release compound fertilizer is applied
Amount is 14Kg/ mus, urea sowing amount is 6Kg/ mus, potassium sulfate sowing amount is 5Kg/ mus.
5. nitrogenous fertilizer decrement fertilizing method as claimed in claim 1, wherein：Step (3) jointing stage applies fertilizer：Using potassium sulphate fertilizer
Material, amount of application is 5Kg/ mus.
6. nitrogenous fertilizer decrement fertilizing method as claimed in claim 1, wherein：Step (4) children's ear period fertilising：Slow-release compound fertilizer is applied
Measure as 10Kg/ mus, urea sowing amount is 4Kg/ mus.
7. nitrogenous fertilizer decrement fertilizing method as claimed in claim 1, wherein：Before step (1), soil after late fall rice harvesting
During water content 25%-30%, plough 20-25cm, winter Liang Long, spring rotary tillage drought leveling, to clear up and repair before spring site preparation
Good irrigation and drainage canal, keeps unimpeded.
8. nitrogenous fertilizer decrement fertilizing method as claimed in claim 1, wherein：
Seedling raising ground substance is bacterium rod：Local soil=2:1；The bacterium rod is the bacterium rod after bacterium, abundant fermentation maturity；
Seedling raising method is big plate seedling raising, the application rate of 125g/ disks.
9. nitrogenous fertilizer decrement fertilizing method as claimed in claim 1, wherein：
The salt-soda soil is that soil salt content is 0.3%, and the rice shoot for choosing 25 ages in days is transplanted, and rice transplanting standard is line-spacing
30cm, spacing in the rows 15cm, per 3-5, cave base seedling.
10. nitrogenous fertilizer decrement fertilizing method as claimed in claim 9, wherein：Water layer management after rice transplanting mainly includes：
Seedling-protection water：2/3 water seedling-protection of height of seedling is filled before being turned green after rice transplanting；
Tiller water：Whole tillering stage fills the deep shallow waters of 3-5cm, to heat promotion tiller；
Dry field：3-5 days draining dry fields 5-7 days before effective tillering peak period, dry field standard is the non-sticky pin in rice field, and field meets personally white,
Leaf endures color depth；
Protect fetal fluids：Pregnant tiller fills 4-6cm running water, deep water shield tire to before earing；
Draining：The stage of yellow ripeness starts draining.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112931103A (en) * | 2021-01-26 | 2021-06-11 | 湖北省农业科学院农业经济技术研究所(湖北省农业科学院农业规划设计研究所) | Planting method of high-quality safe selenium-rich rice |
| CN113475183A (en) * | 2021-08-23 | 2021-10-08 | 湖南农业大学 | Coastal saline-alkali soil comprehensive improvement method based on hybrid indica rice planting |
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| CN112931103B (en) * | 2021-01-26 | 2023-10-31 | 湖北省农业科学院农业经济技术研究所(湖北省农业科学院农业规划设计研究所) | Planting method of high-quality safe selenium-enriched rice |
| CN113475183A (en) * | 2021-08-23 | 2021-10-08 | 湖南农业大学 | Coastal saline-alkali soil comprehensive improvement method based on hybrid indica rice planting |
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