CN106069445A - A kind of fertilizer irrigation method promoting Oryza sativa L. Floret differentiation to reduce degeneration - Google Patents
A kind of fertilizer irrigation method promoting Oryza sativa L. Floret differentiation to reduce degeneration Download PDFInfo
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- CN106069445A CN106069445A CN201610466231.0A CN201610466231A CN106069445A CN 106069445 A CN106069445 A CN 106069445A CN 201610466231 A CN201610466231 A CN 201610466231A CN 106069445 A CN106069445 A CN 106069445A
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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
- A01C21/007—Determining fertilization requirements
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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
- A01G22/20—Cereals
- A01G22/22—Rice
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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
- A01G25/00—Watering gardens, fields, sports grounds or the like
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Abstract
A kind of fertilizer irrigation method promoting Oryza sativa L. Floret differentiation to reduce degeneration, it is characterized in that: comprise the following steps successively: the first step, before rice transplanting, rice basal fertilizer is applied in rice field, being controlled by the total nitrogen content of rice basal fertilizer at 90 ~ 100 kilograms/hectare, described rice basal fertilizer is mixed by inorganic fertilizer and fertilizer and forms, wherein, the nitrogen content of fertilizer accounts for the 60 ~ 70% of rice basal fertilizer total nitrogen, and the nitrogen content of inorganic fertilizer accounts for the 30 ~ 40% of rice basal fertilizer total nitrogen；According to SPAD value, second step, after transplanting, in tiller early stage, the 4 leaf phases of falling, the 2 leaf phases SPAD value with chlorophyll meter mensuration blade of falling, determines that amount of nitrogen carries out variable and topdresses；3rd step, carries out moisture according to the lower bound soil water potential of growthdevelopmental stage and setting and accurately manages.The present invention solves the problem that in plant body, nitrogen accumulation too much causes final grain number per spike to reduce during modern high-yield rice kind, particularly large spike Super Hybrid rice varieties Spike development, improves yield, decreases nitrogen fertilizer amount and moisture irrigation volume.
Description
Technical field
The present invention relates to Rice Cropping field, be specifically related to a kind of fertilizer irrigation promoting Oryza sativa L. Floret differentiation to reduce degeneration
Method.
Background technology
The yield source planting modes on sink characteristic analysis of immediate and mid-term China rice varieties shows, with kind evolution, yield is with total grain husk flower amount
Increase and improve, from short-stalked variety to modern varieties, the spike number of unit are slightly reduces, and grains per panicle is then drilled with kind
Enter to be significantly increased.Coordinating between cereal crop spike number, grain number, grain weight during contradiction, the suitable grain number per spike of unit are is
Playing primary mastery reaction, " stablizing suitable spike number, big fringe of assaulting the main target " is just conducive to Population and quality contradiction on high level
Unified.Therefore, since nearly one, 20 years, breeding men assault the main target a collection of large spike super hybridization rice kind that big fringe is cultivated, because of
Its big panicle many grains per panicle, expands yield storage capacity, effectively also because its photosynthetic efficiency is high, root system activity is strong, storehouse, source stream is coordinated, high yield is latent
The characteristic that power is big is able to carry out Super-high-yielding on producing and creates application.But large-spike cultivar represents huge yield potential on producing
While, there is also such as grain number per spike, setting percentage has under different regions, different year and different cultivation condition and becomes by a relatively large margin
Different problem, the particularly formation of grain husk flower change sensitivity and the instability of apparent altitude to the condition such as moisture, nutrient, cause producing
Amount potential advantages can not effectively play.Moisture and nitrogen as affecting rice growth most important cultivation regulation condition, two
Person not only regulates and controls the formation of grain husk flower, and enriches the grouting of seed and also play a decisive role, thus finally affects number of grain per ear.Mesh
The fertilizer irrigation technology that can promote Oryza sativa L. Floret differentiation, reduce degeneration is lacked in front production.
Summary of the invention
The problem existed for prior art, the present invention provides a kind of and promotes that Oryza sativa L. Floret differentiation reduces the fertilising degenerated and fills
Irrigate method, particularly provide a kind of and promote that large spike hybrid paddy rice Floret differentiation reduces the fertilizer irrigation method degenerated, at Spike development
Phase keeps carbon nitrogen balance in plant body, promotes grain husk flower particularly Secondary branch grain husk Floral differentiation, reduces degeneration number, effectively play increasing
Grain (i.e. number of grain per ear) potentiality increased production and advantage.
For reaching above-mentioned purpose, the technical solution used in the present invention is: a kind of promote Oryza sativa L. Floret differentiation reduce degenerate
Fertilizer irrigation method, it is characterised in that: comprise the following steps successively:
The first step, before rice transplanting, applies rice basal fertilizer in rice field, controls the total nitrogen content of rice basal fertilizer 90 ~ 100
Kilogram/hectare, described rice basal fertilizer is mixed by inorganic fertilizer and fertilizer and forms, and wherein, the nitrogen content of fertilizer accounts for rice basal fertilizer
The 60 ~ 70% of total nitrogen, the nitrogen content of inorganic fertilizer accounts for the 30 ~ 40% of rice basal fertilizer total nitrogen；
Second step, after transplanting, in tiller in early days, fall 4 leaf phases, fell for 2 leaf phases and measure the SPAD value of blade with chlorophyll meter, according to
SPAD value determines that amount of nitrogen carries out variable and topdresses:
(1) when described tiller blade SPAD value in early days is less than 38, applying tillering fertilizer in rice field, the nitrogen content of tillering fertilizer exists
65 ~ 75 kilograms/hectare；When blade SPAD value is between 38 ~ 42, applying tillering fertilizer in rice field, the nitrogen content of tillering fertilizer exists
45 ~ 55 kilograms/hectare；When blade SPAD value is more than 42, applying tillering fertilizer in rice field, the nitrogen content of tillering fertilizer is 25 ~ 35
Kilogram/hectare；
(2) when the blade SPAD value of described 4 leaf phases is less than 40, applying ear manuer in rice field, the nitrogen content of ear manuer is 75 ~ 85
Kilogram/hectare；When blade SPAD value is between 40 ~ 42, in rice field apply ear manuer, the nitrogen content of ear manuer 55 ~ 65 kilograms/
Hectare；When blade SPAD value is more than 42, applying ear manuer in rice field, the nitrogen content of ear manuer is at 35 ~ 45 kilograms/hectare；
(3) when the blade SPAD value of described 2 leaf phases is less than 40, applying ear manuer in rice field, the nitrogen content of ear manuer is 75 ~ 85
Kilogram/hectare；When blade SPAD value is between 40 ~ 42, in rice field apply ear manuer, the nitrogen content of ear manuer 55 ~ 65 kilograms/
Hectare；When blade SPAD value is more than 42, applying ear manuer in rice field, the nitrogen content of ear manuer is at 35 ~ 45 kilograms/hectare；
3rd step, carries out moisture according to the lower bound soil water potential of growthdevelopmental stage and setting and accurately manages:
(1) irrigating at the thin water of period of seedling establishment, irrigation water layer is 0.8 ~ 1.2cm；
(2) to boot stage after alive of Oryza sativa L., the soil water potential done to from 15 ~ 20cm depths, earth's surface that naturally falls reaches-10KPa
Time, keeping irrigating water layer is 1.5 ~ 2.0cm, then the soil water potential done to from 15 ~ 20cm depths, earth's surface that naturally falls reaches-10KPa
Time, then to keep irrigating water layer be 1.5 ~ 2.0cm, such cyclic irrigation is until before boot stage；
(3) keeping shoaling layer to irrigate in boot stage and field in florescence, irrigation water layer is 1.8 ~ 2.0cm.
Relevant content in technique scheme is explained as follows:
1, in such scheme, described blade SPAD value is to measure plant with chlorophyll meter to fall upper, middle and lower portion 3 point of 2 leaves, makes even
All it is worth to.
2, in such scheme, after described 3rd EOS, at During Grain-filling, naturally fall and do to from earth's surface 15 ~ 20cm
When the soil water potential of depths reaches-20KPa, irrigating water layer is 1.5 ~ 2.0cm, more naturally falls to doing to deep from earth's surface 15 ~ 20cm
The soil water potential at place is when reaching-20KPa, then to irrigate water layer be 1.5 ~ 2.0cm, so circulates, within first 10 days, cuts off the water supply until ripe.
3, in such scheme, soil water potential can (Zhejiang Top Instrument Co., Ltd. produces model TRS with soil water potential amount instrument
~ II) monitoring soil water potential, reads during 8:00 ~ 8:30 and 16:30 ~ 17:30 every day to remember soil water potential value 1 time, with 2 times respectively
Meansigma methods represents soil water potential value on the same day.
Design principle of the present invention is: become to be affected by C N metabolism in plant body according to Jointing stage Oryza sativa L. grain husk flower-shape, water
Divide and the accurately management controllable rice plant carbon nitrogen balance of nitrogenous fertilizer, promote that Oryza sativa L. Floret differentiation, minimizing are degenerated.The Floret differentiation phase
The nitrogen content of rice strain and Floret differentiation number are close positive correlation, increase amount of nitrogen within the specific limits and keep carbon nitrogen balance permissible
Increase existing floret bears, especially increased considerably Secondary branch, but nitrogenous fertilizer too much destroys the carbon nitrogen balance in plant body,
It is unfavorable for secondary grain husk Floral differentiation, and existing number also reduces.Each period of duration of Oryza sativa L. is different, according to Oryza sativa L. to the demand of moisture
Each period of duration demand characteristics to moisture, determines the soil water potential index needing to irrigate, carries out accurate water management, turning green
The key developmental stages fields such as phase, boot stage and florescence keep shoaling layer to irrigate, and carry out light Dry-wet alternate irrigation other periods, make
Water management can promote root growth and development, improves improving activity of root system and absorbs moisture and the efficiency of nutrient, and then promoting grain husk flower
Grow and the formation of final grain number per spike.
Owing to technique scheme is used, the present invention compared with prior art has following advantages and an effect:
1, the inventive method makes traditional base manure method based on inorganic fertilizer into organic-inorganic fertilizer application, fertilizer is main
Method, improves soil physical and chemical property, promotes root growth, reduces rice seedling loss of nitrogenous fertilizer, reaches early stage control Seedling and strengthen stalk, later stage
Promote flower and increase the purpose of grain.
2, the inventive method is according to Rice Panicle idiophase Floret differentiation degradation characteristics, focuses on controlling the nitrogen water in plant body
Flat, under conditions of using sufficient base manure, topdress and determine amount of nitrogen according to blade SPAD value, the variable implementing tillering fertilizer and ear manuer chases after
Execute, reach carbon nitrogen balance in rice plant body, promote Oryza sativa L. Floret differentiation, reduce the purpose degenerated.
3, the inventive method is according to each period of duration of the Oryza sativa L. demand characteristics to moisture, determines the soil water potential needing to irrigate
Index, carries out accurate water management, promotes root growth and development, improves improving activity of root system and absorbs the efficiency of water and nutrient, and then
Promote grain husk Floral development and the formation of final grain number per spike.
4, the inventive method fertilising and irrigation volume reduce 10% and 20% than conventional fertilizer application and normal irrigation amount respectively.
In a word, the fertilizer irrigation method of the present invention solves modern high-yield rice kind, particularly large spike Super Hybrid
During rice varieties Spike development, in plant body, nitrogen accumulation too much causes the problem that final grain number per spike reduces, and improves yield, subtracts
Nitrogen fertilizer amount and moisture irrigation volume are lacked.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described:
Embodiment: a kind of fertilizer irrigation method promoting Oryza sativa L. Floret differentiation to reduce degeneration
Comprise the following steps successively:
The first step, before rice transplanting, applies rice basal fertilizer in rice field, controls the total nitrogen content of rice basal fertilizer 90 ~ 100
Kilogram/hectare, described rice basal fertilizer is mixed by inorganic fertilizer and fertilizer and forms, and wherein, the nitrogen content of fertilizer accounts for rice basal fertilizer
The 60 ~ 70% of total nitrogen, the nitrogen content of inorganic fertilizer accounts for the 30 ~ 40% of rice basal fertilizer total nitrogen；
Second step, after transplanting, in tiller in early days, fall 4 leaf phases, fell for 2 leaf phases and measure the SPAD value of blade with chlorophyll meter, according to
SPAD value determines that amount of nitrogen carries out variable and topdresses:
(1) when described tiller blade SPAD value in early days is less than 38, applying tillering fertilizer in rice field, the nitrogen content of tillering fertilizer exists
65 ~ 75 kilograms/hectare；When blade SPAD value is between 38 ~ 42, applying tillering fertilizer in rice field, the nitrogen content of tillering fertilizer exists
45 ~ 55 kilograms/hectare；When blade SPAD value is more than 42, applying tillering fertilizer in rice field, the nitrogen content of tillering fertilizer is 25 ~ 35
Kilogram/hectare；
(2) when the blade SPAD value of described 4 leaf phases is less than 40, applying ear manuer in rice field, the nitrogen content of ear manuer is 75 ~ 85
Kilogram/hectare；When blade SPAD value is between 40 ~ 42, in rice field apply ear manuer, the nitrogen content of ear manuer 55 ~ 65 kilograms/
Hectare；When blade SPAD value is more than 42, applying ear manuer in rice field, the nitrogen content of ear manuer is at 35 ~ 45 kilograms/hectare；
(3) when the blade SPAD value of described 2 leaf phases is less than 40, applying ear manuer in rice field, the nitrogen content of ear manuer is 75 ~ 85
Kilogram/hectare；When blade SPAD value is between 40 ~ 42, in rice field apply ear manuer, the nitrogen content of ear manuer 55 ~ 65 kilograms/
Hectare；When blade SPAD value is more than 42, applying ear manuer in rice field, the nitrogen content of ear manuer is at 35 ~ 45 kilograms/hectare；
3rd step, carries out moisture according to the lower bound soil water potential of growthdevelopmental stage and setting and accurately manages:
(1) irrigating at the thin water of period of seedling establishment, irrigation water layer is 0.8 ~ 1.2cm；
(2) to boot stage after alive of Oryza sativa L., the soil water potential done to from 15 ~ 20cm depths, earth's surface that naturally falls reaches-10KPa
Time, keeping irrigating water layer is 1.5 ~ 2.0cm, then the soil water potential done to from 15 ~ 20cm depths, earth's surface that naturally falls reaches-10KPa
Time, then to keep irrigating water layer be 1.5 ~ 2.0cm, such cyclic irrigation is until before boot stage；
(3) keeping shoaling layer to irrigate in boot stage and field in florescence, irrigation water layer is 1.8 ~ 2.0cm.
(4) at During Grain-filling, naturally fall to doing to when the soil water potential of 15 ~ 20cm depths, earth's surface reaches-20KPa, fill
Irrigating water layer is 1.5 ~ 2.0cm, more naturally falls to doing to when the soil water potential of 15 ~ 20cm depths, earth's surface reaches-20KPa, then fills
Irrigating water layer is 1.5 ~ 2.0cm, so circulates, and within first 10 days, cuts off the water supply until ripe.
Specific practice: selected local high yield japonica rice kind force to transport round-grained rice 23 and large spike in Suzhou respectively at 2014 ~ 2015 years
Japonica Hybrid kind river in Zhejiang Province excellent 1540 is implemented the fertilizer irrigation method promoting the minimizing of Oryza sativa L. Floret differentiation to degenerate of the present invention and (is called for short new
Method) field test.With local conventional high-yield culture technique: the time of infertility, total amount of nitrogen was 300 kilograms/hectare, Qi Zhongji
Fertilizer accounts for the 55% of total amount of nitrogen；Tillering fertilizer accounts for the 20% of total amount of nitrogen；Ear manuer accounts for the 25% of total amount of nitrogen, and nitrogenous fertilizer is carbamide.Except fertility
Putting mid-term outside field, remaining time field keeps shoaling layer to irrigate, until results are cut off the water supply as comparison for first 1 week.
New method executes nitrogen 100 kilogram/hectare before transplanting, and wherein the nitrogen content of fertilizer accounts for the total nitrogen of base manure
70%, the nitrogen content of inorganic fertilizer (carbamide) accounts for the 30% of base manure total nitrogen.In tiller early stage, the 4 leaf phases of falling, fell for 2 leaf phases, according to blade
SPAD value determines that amount of nitrogen carries out variable and topdresses.When described tiller blade SPAD value in early days is less than 38, apply in rice field
Tillering fertilizer, the nitrogen content of tillering fertilizer is at 70 kilograms/hectare；When blade SPAD value is between 38 ~ 42, in rice field, apply tiller
Fertilizer, the nitrogen content of tillering fertilizer is at 50 kilograms/hectare；When blade SPAD value is more than 42, in rice field, apply tillering fertilizer, tillering fertilizer
Nitrogen content at 30 kilograms/hectare；When the blade SPAD value of described 4 leaf phases is less than 40, in rice field, apply ear manuer, ear manuer
Nitrogen content at 75 ~ 85 kilograms/hectare；When blade SPAD value is between 40 ~ 42, in rice field, apply ear manuer, containing of ear manuer
Nitrogen quantity is at 60 kilograms/hectare；When blade SPAD value more than 42 time, in rice field apply ear manuer, the nitrogen content of ear manuer 40 kilograms/
Hectare；When described fall 2 leaf phases blade SPAD value less than 40 time, in rice field applying ear manuer, the nitrogen content of ear manuer 80 kilograms/
Hectare；When blade SPAD value is between 40 ~ 42, applying ear manuer in rice field, the nitrogen content of ear manuer is at 60 kilograms/hectare；When
When blade SPAD value is more than 42, applying ear manuer in rice field, the nitrogen content of ear manuer is at 40 kilograms/hectare；
Carrying out moisture according to growthdevelopmental stage and soil water potential accurately to manage, irrigate at the thin water of period of seedling establishment, irrigation water layer is 1.0cm；
To boot stage after alive of Oryza sativa L., naturally fall to doing to when the soil water potential of 15 ~ 20cm depths, earth's surface reaches-10KPa, irrigate water layer
1.5 ~ 2.0cm, the then when soil water potential done to 15 ~ 20cm depths, earth's surface that naturally falls reaches-10KPa, then irrigate water layer and be
1.5 ~ 2.0cm, so circulates；Boot stage and field in florescence keep shoaling layer to irrigate, and irrigation water layer is 2.0cm；Grain Filling
Phase, naturally fall to doing to when the soil water potential of 15 ~ 20cm depths, earth's surface reaches-20KPa, irrigate water layer 1.5 ~ 2.0cm, then oneself
When the soil water potential done to 15 ~ 20cm depths, earth's surface that so falls reaches-20KPa, then to irrigate water layer be 1.5 ~ 2.0cm, so follows
Ring, maturation is cut off the water supply for first 10 days.
Experimental result:
As shown in table 1, table 2, new method can significantly improve total branch stalk and total Floret differentiation number, reduces degeneration number, increases existing number,
Wherein total branch stalk and total Floret differentiation number of military fortune round-grained rice 23 improves 6.85% and 4.88% than comparison respectively, the comparison respectively of degeneration number
According to decreasing 48.59% and 25.44%, existing several improve 14.41% and 7.26% than comparison respectively；Total branch stalk of river in Zhejiang Province excellent 1540
Improve 3.77% and 7.41% than comparison respectively with total Floret differentiation number, degeneration number decreases 33.94% He than comparison respectively
8.99%, existing number improves 9.84% and 8.55% than comparison respectively.
The impact that spike of rice branch stalk is formed by the different water nitrogen management of table 1:
The impact that spike of rice grain husk flower-shape is become by the different water nitrogen management of table 2:
As shown in table 3, new method can reduce plant nitrogen mass content at heading stage, military fortune round-grained rice 23 and the excellent 1540 nitrogen quality in river in Zhejiang Province
Content reduces 3.53% and 4.06% than comparison respectively；Improve plant unstructuredness carbon (C) mass content at heading stage, military
Fortune round-grained rice 23 and excellent 1540 strain unstructuredness carbon (C) mass content in river in Zhejiang Province add 2.54 % and 6.11% than comparison respectively；Improve
Plant carbon-nitrogen ratio at heading stage, military fortune round-grained rice 23 and river in Zhejiang Province excellent 1540 carbon-nitrogen mass ratios add 6.33 % and 10.61 than comparison respectively
%.New method promotes carbon nitrogen balance in rice plant body.
The different water nitrogen management impact on plant carbon-nitrogen ratio at heading stage of table 3
As shown in table 4, new method can significantly improve yield, and military fortune round-grained rice 23 and excellent 1540 yield in river in Zhejiang Province improve 3.82 than comparison respectively
% and 2.66 %.
The different water nitrogen management impact on yield composition of table 4
As shown in table 5, new method can reduce dose and irrigation volume, and military fortune round-grained rice 23 and excellent 1538 yield in river in Zhejiang Province reduce than comparison respectively
10%, 23.11% and 10%, 19.22%.
The nitrogenous fertilizer of the different water nitrogen management of table 5 and the contrast of moisture consumption
Above-described embodiment, only for technology design and the feature of the explanation present invention, its object is to allow person skilled in the art's energy
Solution present disclosure much of that is also implemented according to this, can not limit the scope of the invention with this.All according to present invention spirit
The equivalence that essence is made changes or modifies, and all should contain within protection scope of the present invention.
Claims (3)
1. one kind promotes that Oryza sativa L. Floret differentiation reduces the fertilizer irrigation method degenerated, it is characterised in that: comprise the following steps successively:
The first step, before rice transplanting, applies rice basal fertilizer in rice field, controls the total nitrogen content of rice basal fertilizer 90 ~ 100
Kilogram/hectare, described rice basal fertilizer is mixed by inorganic fertilizer and fertilizer and forms, and wherein, the nitrogen content of fertilizer accounts for rice basal fertilizer
The 60 ~ 70% of total nitrogen, the nitrogen content of inorganic fertilizer accounts for the 30 ~ 40% of rice basal fertilizer total nitrogen；
Second step, after transplanting, in tiller in early days, fall 4 leaf phases, fell for 2 leaf phases and measure the SPAD value of blade with chlorophyll meter, according to
SPAD value determines that amount of nitrogen carries out variable and topdresses:
(1) when described tiller blade SPAD value in early days is less than 38, applying tillering fertilizer in rice field, the nitrogen content of tillering fertilizer exists
65 ~ 75 kilograms/hectare；When blade SPAD value is between 38 ~ 42, applying tillering fertilizer in rice field, the nitrogen content of tillering fertilizer exists
45 ~ 55 kilograms/hectare；When blade SPAD value is more than 42, applying tillering fertilizer in rice field, the nitrogen content of tillering fertilizer is 25 ~ 35
Kilogram/hectare；
(2) when the blade SPAD value of described 4 leaf phases is less than 40, applying ear manuer in rice field, the nitrogen content of ear manuer is 75 ~ 85
Kilogram/hectare；When blade SPAD value is between 40 ~ 42, in rice field apply ear manuer, the nitrogen content of ear manuer 55 ~ 65 kilograms/
Hectare；When blade SPAD value is more than 42, applying ear manuer in rice field, the nitrogen content of ear manuer is at 35 ~ 45 kilograms/hectare；
(3) when the blade SPAD value of described 2 leaf phases is less than 40, applying ear manuer in rice field, the nitrogen content of ear manuer is 75 ~ 85
Kilogram/hectare；When blade SPAD value is between 40 ~ 42, in rice field apply ear manuer, the nitrogen content of ear manuer 55 ~ 65 kilograms/
Hectare；When blade SPAD value is more than 42, applying ear manuer in rice field, the nitrogen content of ear manuer is at 35 ~ 45 kilograms/hectare；
3rd step, carries out moisture according to the lower bound soil water potential of growthdevelopmental stage and setting and accurately manages:
(1) irrigating at the thin water of period of seedling establishment, irrigation water layer is 0.8 ~ 1.2cm；
(2) to boot stage after alive of Oryza sativa L., the soil water potential done to from 15 ~ 20cm depths, earth's surface that naturally falls reaches-10KPa
Time, keeping irrigating water layer is 1.5 ~ 2.0cm, then the soil water potential done to from 15 ~ 20cm depths, earth's surface that naturally falls reaches-10KPa
Time, then to keep irrigating water layer be 1.5 ~ 2.0cm, such cyclic irrigation is until before boot stage；
(3) keeping shoaling layer to irrigate in boot stage and field in florescence, irrigation water layer is 1.8 ~ 2.0cm.
A kind of fertilizer irrigation method promoting Oryza sativa L. Floret differentiation to reduce degeneration the most according to claim 1, its feature exists
Being to measure plant with chlorophyll meter to fall upper, middle and lower portion 3 point of 2 leaves in: described blade SPAD value, averaging obtains.
A kind of fertilizer irrigation method promoting Oryza sativa L. Floret differentiation to reduce degeneration the most according to claim 1, its feature exists
In: after described 3rd EOS, at During Grain-filling, naturally fall to doing to the soil water potential from 15 ~ 20cm depths, earth's surface reach-
During 20KPa, irrigation water layer is 1.5 ~ 2.0cm, more naturally fall to doing to the soil water potential from 15 ~ 20cm depths, earth's surface reach-
During 20KPa, then to irrigate water layer be 1.5 ~ 2.0cm, so circulates, and within first 10 days, cuts off the water supply until ripe.
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| CN107646270A (en) * | 2017-09-19 | 2018-02-02 | 湖南农业大学 | A kind of method for reducing double-ridged horn nitrogen volatilization loss |
| CN109644845A (en) * | 2018-12-29 | 2019-04-19 | 宜春学院 | Influence Rice Leaf, rhizosphere N2The method and device of O discharge |
| CN111512910A (en) * | 2020-06-05 | 2020-08-11 | 山东省农业科学院作物研究所 | Winter wheat planting method for adjusting nitrogen fertilizer application period and application amount according to soil basic fertility |
| CN114223482A (en) * | 2021-12-01 | 2022-03-25 | 云南省农业科学院粮食作物研究所 | Cultivation method for rice by one-time fertilization |
| CN114532185A (en) * | 2022-03-22 | 2022-05-27 | 扬州大学 | Irrigation method for improving lysine content of rice |
| CN116114553A (en) * | 2022-12-23 | 2023-05-16 | 中国水稻研究所 | Mechanical transplanting high-yield planting method for promoting roots and strengthening stems of indica-japonica hybrid rice |
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| CN114223482A (en) * | 2021-12-01 | 2022-03-25 | 云南省农业科学院粮食作物研究所 | Cultivation method for rice by one-time fertilization |
| CN114532185A (en) * | 2022-03-22 | 2022-05-27 | 扬州大学 | Irrigation method for improving lysine content of rice |
| CN116114553A (en) * | 2022-12-23 | 2023-05-16 | 中国水稻研究所 | Mechanical transplanting high-yield planting method for promoting roots and strengthening stems of indica-japonica hybrid rice |
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