CN107646668A - A kind of seed making method of corn variety - Google Patents
A kind of seed making method of corn variety Download PDFInfo
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- CN107646668A CN107646668A CN201710749062.6A CN201710749062A CN107646668A CN 107646668 A CN107646668 A CN 107646668A CN 201710749062 A CN201710749062 A CN 201710749062A CN 107646668 A CN107646668 A CN 107646668A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01H—NEW PLANTS OR NON-TRANSGENIC PROCESSES FOR OBTAINING THEM; PLANT REPRODUCTION BY TISSUE CULTURE TECHNIQUES
- A01H1/00—Processes for modifying genotypes ; Plants characterised by associated natural traits
- A01H1/02—Methods or apparatus for hybridisation; Artificial pollination ; Fertility
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01H—NEW PLANTS OR NON-TRANSGENIC PROCESSES FOR OBTAINING THEM; PLANT REPRODUCTION BY TISSUE CULTURE TECHNIQUES
- A01H1/00—Processes for modifying genotypes ; Plants characterised by associated natural traits
- A01H1/04—Processes of selection involving genotypic or phenotypic markers; Methods of using phenotypic markers for selection
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Abstract
The invention discloses a kind of seed making method of corn variety, comprise the following steps：1) seed is pre-processed, chooses the seed suitably sowed；2) select suitable sowing time and pay attention to adjusting Parent intermission seeding；3) seedbed preparation, spray herbicide and corn seed field isolation strip is set up；4) suitable depth of planting, application rate and planting density are selected, starts to sow；First in plastic film mulching, then rupture of membranes sowing before sowing；During sowing, female parent is embarked on journey sowing, the program request male parent among two rows are maternal.The present invention is in Seeds preprocess, seed selection, the method that sowing time is selected, the wrong kind phase is selected, pre-processes maize seed, a set of original creation is formed in depth of planting, application rate, planting density, seeding method and method, field management, the strict critical point for holding the focus technology link such as parental seed quality and sowing, impurity elimination, emasculation, harvest, drying, processing, to ensure to possess the characteristics of high yield, high-quality, resistance to close, precocious using maize seed prepared by this method.
Description
Technical field
The invention belongs to crop breeding technical field, and in particular to a kind of seed making method of corn variety.
Background technology
Corn belongs to grain, warp, raises dual-purpose crop, and trans-utilization scope is wide, and popularizing planting area is big, has development well
And application prospect.The corn hybrid seed of high quality is the key for ensureing corn with high yield stable yields.In cenospecies Commercial cultivation process
In, that poor seed uniformity, purity difference, bud rate are low etc. to a certain extent for a long time be present.This is mainly due to hybridization
Production of hybrid seeds links are not tight to check on, and quality mind is poor, and caused by many factors such as market management is not capable.Only recognize conscientiously
Know the seriousness of seed production quality, during cross breeding seed, really grasp and strictly implement cross breeding seed technology, strictly
The focus technology such as parental seed quality and sowing, impurity elimination, emasculation, harvest, drying, processing link and requirement are held, and according to product
Kind characteristic, does field management well, so as to improve seed production quality and hybrid seed yield, can just produce the qualified hybridization of high quality conscientiously
Seed, provide good seed for Maize Production and ensure.
Chinese patent application publication No. CN103503659A discloses a kind of simple, easy popularization, the corn of increasing both production and income
High-yield planting method.The high-yield plating method of crop, it is corn planting 2-3 ridges, an empty ridge is not sowed；Corn is per ridge planting one
OK, 13-15 centimetres of spacing in the rows.Although the implantation methods of the present invention can make corn yield increasing, but ignore the selection of seed, broadcast
The selection of kind phase, the pretreatment in soil and field management etc. produce the production link of material impact, therefore this to corn yield
The sowing hair method consideration of invention is not comprehensive enough, still has many problems to need to overcome in reality is sowed.
The content of the invention
The defects of present invention is directed to prior art provides a kind of seed making method of corn variety, by being educated in field
Male parent is reduced during kind and occupies colony, expands maternal colony, effectively improves the yield of hybrid maize seed production, while the corn with high yield
Maize seed made from producing method for seed also has the advantages of high-quality, resistance to close, precocious.
The present invention is realized by the following method：
A kind of seed making method of corn variety, comprises the following steps：
1) seed is pre-processed, and chooses seeds, basks seeds；
2) select suitable sowing time and pay attention to adjusting Parent intermission seeding；
3) seedbed preparation, spray herbicide and corn seed field isolation strip is set up；
4) suitable depth of planting, application rate and planting density are selected, starts to sow；First in plastic film mulching before sowing, so
Rupture of membranes is sowed afterwards；During sowing, female parent is embarked on journey sowing, the program request male parent among two rows are maternal.
Further, the Seeds preprocess in step 1), choosing seeds and basking seeds comprises the following steps：
Seed is coated processing first；
Secondly choose seeds：From purity more than 98%, germination percentage more than 90% and kind grain not damaged, the pelleted seed of uniformity
Son；
Finally bask seeds：The capsuled seed of above-mentioned selection is basked seeds 2-6 days.
Further, the purity of seed is typically detected using " isodynamic enzyme " determination method；The capsuled seed chosen
Germination percentage is higher than 90%.Take culture dish pad to moisten filter paper, put and state after the capsuled seed is counted into 100 moistenings respectively
In culture dish, above-mentioned culture dish is placed on and records the germination of 3,4,5,6 days in incubator respectively and pays attention to the culture
The moisture humidity and temperature of case, the germination percentage of capsuled seed as described in double experiments carry out average computation, the time of basking seeds is 4 day.
The time of basking seeds is 4 day.
Further, the sowing time in the step 2) is chosen as follows：The sowing time according to ground temperature, soil soil moisture content and
It is fixed, it is desirable to as sowing time when ground temperature stabilization is more than 10 DEG C.
Further, the concrete operations of the step 3) include：
Seedbed preparation：Site preparation is carried out along the diagonal on maize seed ground；
Spray herbicide：After site preparation completion, every mu is closed with 90% acetochlor ec 80-100 milliliters to soil
Spraying, then raked the soil level, just medicine soil mixed layer reaches more than 10 centimetres；
Set up corn seed field isolation strip：First the perimeter bar field on maize seed ground is investigated, makes crop-planting feelings clear
Condition, it is determined that need isolation when, carry out 300 meters~500 meters space isolation or take stagger the time sowing isolation with natural cover every
From the isolation method engaged.
Further, the depth of planting described in step 4) is 2-6cm, and the maternal mu application rate is 2-5 kilograms, father
This mu of application rate is 1-4 kilograms.
Further, the depth of planting in step 4) is 3-5cm, and the maternal mu application rate is 3-3.5 kilograms,
Male parent mu application rate is 1-2 kilograms.
Further, the rupture of membranes sowing in step 4) specifically includes：After plastic film mulching, on the film surface put in order
Sowed with seeder, after planting mulch film broken hole position wants refinement grave to close to cover tightly.
Further, the maternal mu planting density in step 4) is 4500-6000 strains, and male parent mu planting density is
1000-1500 strains.
Further, the depth of planting in step 4) is 4cm, and the maternal mu application rate is 3.5 kilograms, male parent mu
Application rate is 1.5 kilograms, and maternal mu planting density is 5500 plants, and male parent mu planting density is 1200 plants.
Present invention corn variety to be prepared is high yield, high-quality, resistance to close early-maturing variety space jade 704, and the space jade 704 is
Using self-fertile self-mating system SX1135 as female parent, self-fertile self-mating system SX3821 is male parent, hybridized in 2011 in Hainan and prepares combination,
The high yield and high quality corn hybrid seed selected by multi-point sampler.
Wherein,
Maternal SX1135：Strain plant type is compact, plant height 180cm, fringe position 70cm, 18~20 leaves of complete stool.Tassel branch 2-4
It is individual, flower pesticide yellow, sterile lemma yellow.Fringe thick 4.1cm, spike length 17cm, tassel row number 14-16 rows, row grain number 46,100-grain weight
37.1g.Fruit ear cartridge type shape, cob is red, the horse grain type of seed half.
Male parent SX3821：The self-mating system seedling gesture is strong, and seedling leaf sheath is green, and leaf green, plant type is compact, and Tassel-Branch is more
It is long.Flower pesticide yellow, filigree green.Plant height 160cm, fringe position 50cm.Seed yellow, white axle, Hard grain type.Fruit ear cartridge type, spike length
20cm, the thick 4.0cm of fringe.
The purpose of the present invention is achieved through the following technical solutions：
Compared with prior art, the present invention at least has advantages below：
1) present invention takes female parent to embark on journey sowing at seeding time, in the breeding method of the maternal centre program request male parent of two rows, energy
Enough reduce male parent and occupy colony, expand maternal colony, maternal colony's pollination rate can be improved, effectively improve the production of hybrid maize seed production
Amount；
2) present invention in Seeds preprocess, seed selection, sowing time is selected, wrong kind phase select, pre-processed maize seed, sowing depth
A set of unique and innovation method is formed in degree, application rate, planting density, seeding method and method, field management, strictly handle
The critical point of the focus technology link such as good parental seed quality and sowing, impurity elimination, emasculation, harvest, drying, processing, ensure using this
Maize seed prepared by method possesses the characteristics of high yield, high-quality, resistance to close, precocious；
3) seed making method of the invention, its a full set of method or Part Methods therein are readily applicable to other jade
Rice kind high-efficient breeding, it is applied widely.
Embodiment
With reference to embodiment, the invention will be further described, and following examples are descriptive, is not limited
, it is impossible to protection scope of the present invention is limited with this.
Embodiment 1
A kind of seed making method of corn variety, comprises the following steps：
1) seed is pre-processed, and chooses seeds, basks seeds；
2) select suitable sowing time and pay attention to adjusting Parent intermission seeding.During hybrid maize seed production, root
Sowing time is adjusted according to male parent and maternal breeding time, in normal year, general adjustment sowing time can make male parent and maternal florescence
Meet, but in the unusual weather conditions time, then it is noted that prediction of flowering period, understands flower synchronization situation so as to early.Adjust the purpose of wrong phase
It is to ensure male parent and maternal flower synchronization, improves pollination setting percentage.The regulation of wrong phase mainly according to the Growing Characters of kind and
Fixed, breed combination its male parent of difference and maternal wrong phase are also different, the wrong phase scheme that should be formulated in strict accordance with each production of hybrid seeds company and side
Formula method carries out in real earnest；
3) seedbed preparation, spray herbicide and corn seed field isolation strip is set up；
4) suitable depth of planting, application rate and planting density are selected, starts to sow；First in plastic film mulching before sowing, so
Rupture of membranes is sowed afterwards, first broadcasts female parent, then broadcast male parent；During sowing, female parent is embarked on journey sowing, and the program request male parent among two rows are maternal, this is just
It is required that male parent plant height is higher than female parent, and pollen amount is big, and the duration at florescence will be grown, and can so improve maternal colony's pollination rate,
Effectively improve yield.The beautiful 704 male parent SX3821 tassels of space that the present invention sows are flourishing, and branch is more and long, does not stay father so
One's own profession, maternal colony can be increased, effectively improve yield；Male parent is divided into the sowing of several periods, and each male parent sowing is staggered 3 days~4
Its time, using manual dibbling's device program request, so it is more beneficial for the flower synchronization of Parent；
When it is implemented, the Seeds preprocess in step 1) comprises the following steps：
Seed is coated processing first；Preparing for the coating agent for seed of the present invention is as follows：Seed weight part will be accounted for
50% pungent phosphine sulfide missible oil, the triadimefon of seed weight part 0.25% is accounted for, the copper sulphate of seed weight part 0.4% is accounted for and accounts for seed
The water of parts by weight 200% is well mixed, and is configured to the coating agent for seed, the seed pelleting is dressed seed, for preventing and treating underground
Insect and smut；
Secondly choose seeds：From purity more than 98%, germination percentage more than 90% and kind grain not damaged, the pelleted seed of uniformity
Son, seed selection purpose is to promote seed sprouting neat, it is ensured that once sows out full stand；
When it is implemented, the purity of seed is typically detected using " isodynamic enzyme " determination method；The capsuled seed chosen
Germination percentage requirement be higher than 90%, specific seed choosing method is as follows：Take culture dish pad to moisten filter paper, the capsuled seed is counted respectively
Put and state in culture dish after going out 100 moistenings, above-mentioned culture dish is placed on and records the germination of 3,4,5,6 days in incubator respectively
Situation and the moisture humidity and temperature for paying attention to the incubator, the germination percentage of capsuled seed as described in double experiments carry out average computation,
The time of basking seeds is 4 day.
Finally bask seeds：The capsuled seed of above-mentioned selection is basked seeds 2 days.Bask seeds with following purpose：First, pass through sunshine
In ultraviolet, the germ being attached on kind of skin can be killed, the seed that keeps away from moisture goes mouldy；Second, by basking seeds, seed can be promoted
After-ripening and enzyme activity, reduce the water content of seed, so as to strengthen the water absorbing capacity of seed, improve germination percentage；Third, bask seeds
The permeability of kind of skin can be changed, be advantageous to Interior Seed and form solable matter and exclude internal carbon dioxide, so as to improve seed
Viability, make emergence of corn fast and neat.
Bask seeds the item that should be noted：First, directly it can not be basked seeds on cement floor；Second, pay attention to preventing domestic birds and animals
Or children eat by mistake；Third, the time basked seeds is unsuitable long.
When it is implemented, the sowing time selection in the step 2) is as follows：The sowing time according to ground temperature, soil soil moisture content and
It is fixed, it is desirable to as sowing time when ground temperature stabilization is more than 10 DEG C.To accomplish early site preparation, early fertilising, early overlay film during sowing, broadcast in good time
Kind；Seed breeding base village community will on time be sowed in strict accordance with each combination Parent date of seeding adjustment criteria, must not shift to an earlier date or postpone.
When it is implemented, the concrete operations of the step 3) include：
Seedbed preparation：Method is to carry out site preparation along the diagonal on maize seed ground.Maize seed geological measuring after site preparation will reach
" flat, loose, broken, net, neat " five word standard.
Spray herbicide：After site preparation completion, every mu is closed with 90% acetochlor ec 80-100 milliliters to soil
Spraying, then raked the soil level, just medicine soil mixed layer reaches more than 10 centimetres.The herbicide emphasis removes barnyard grass and grass family is miscellaneous
Grass, method are as follows：By 90 grams of 95% Acetochlor, add 40 kilograms of water, it is well mixed to be configured to liquid medicine, uniformly it is sprayed at 667 squares
The maize seed of rice is on the ground.
Set up corn seed field isolation strip：First the perimeter bar field on maize seed ground is investigated, makes crop-planting feelings clear
Condition, it is determined that need isolation when, carry out 300 meters~500 meters space isolation or take stagger the time sowing isolation with natural cover every
From the isolation method engaged.The purpose for setting up corn seed field isolation strip is to prevent other pollen produce to this production of hybrid seeds process from doing
Disturb.
When it is implemented, the depth of planting described in step 4) is 2cm, application rate is determined according to soil moisture content and soil property,
The maternal mu application rate is 5 kilograms, and male parent mu application rate is 1 kilogram.
When it is implemented, the rupture of membranes sowing described in step 4) specifically includes：After plastic film mulching, on whole good film surface
Sowed with seeder, after planting mulch film broken hole position wants refinement grave to close to cover tightly.
When it is implemented, the maternal mu planting density in the step 4) is 4500 plants, male parent mu planting density is 1000
Strain.
Field management is also carried out after the seed sowing, it is specific as follows：
1st, seedling management
After the seed grows seedling, accomplish early to put seedling, early grave mound, timely final singling is early to remove hybrid strain, is early planted
Seedling manual review, the seedling not according to eye in film will be deducted manually, and seal seedling root soil, remove the miscellaneous seedling on seedling periphery,
A young plant is stayed in seedling timely final singling in 3~5 leaves, a cave, to be disposed to growing excessively huge healthy and strong seedling.
2nd, restrain the growth of seedlings
For control ground cauline leaf growth, promote root system to prick deeply, needed after the emergence of seed farm corn seed according to each kind
Breeding time feature and local climate feature, the restraining the growth of seedlings of 20 days~30 days is carried out, breeding time can squat up to more than 135 days corns
Seedling was at 40 days or so.The special arid situation of weather is run into the restraining the growth of seedlings phase, can also fill a water twice, thus restraining the growth of seedlings GPRS squat it is black
Do not squat Huang, fertilizer of squatting is not squatted thin, wet dry principle of not squatting of squatting.
3rd, intertillage is loosened the soil
To strengthen intertillage before and after restraining the growth of seedlings to loosen the soil, 16 centimetres~18 centimetres of tilling depth, reach and promote to prick under seedling root system, improve
Soil permeability, eliminate the effect of weeds seedling.Restraining the growth of seedlings terminates to feed water and to enough 3kg~5kg/ mus urine to the seedling in time
Fertilizer, promote the fast-growth of the seedling.
4th, subterranean pest-insect is prevented and treated in time
The above-mentioned maize seed grain being coated, will not typically be endangered by subterranean pest-insect.But seedling stage is once there is subterranean pest-insect
When endangering serious, it can use and imitate clever or other systemic insecticide pouring roots or spraying long, and drip in time, also can be with water when dripping
Thimet is added, every 667 squares of meters add 300 grams or so thimets.
Jointing is to heading stage seed farm management
This phase is the typhon mouth phase, is the critical period of water and fertilizer management, seed farm male parent at this moment and maternal long important and influential persons base
Originally even up, individual plant growing way is neatly healthy and strong, and root slightly measures more, internode tubbiness, and blade is generous evergreen.This period if it find that male parent and
Female parent has side growth to be in weak tendency, to promote its and accelerate growth.
This period, the hybrid strain growing way was strong, plant height simultaneously it is noted that removing the hybrid strain in male parent or female parent, stem slightly with crowd
Difference, without the feature of this kind, such hybrid strain will remove.
It is that last time carries out intertillage and trenching ridging work at the beginning of jointing to heading stage, when the leaf age index of the corn plants
When reaching 50%, trenching ridging, 16 centimetres of ditch depth, promote aerial root growth, prevent the corn plants from lodging.
Promote Parent flower synchronization
In corn seed producing field, growth period male parent and female parent are possible to side's growing way and weak tendency occur, cause the florescence occur not meeting it is existing
As.At this moment growth hormone foliar fertilizer and water can be mixed into nutrient solution, occurs the single male parent of weak tendency or maternal filling to growing way
Water grows to adjust it.If male parent and female parent have a side occur growing way it is too strong when, also taking measures, it is another to limit
The surging growth of side, make side's slow growth of advantage, to ensure the flower synchronization of male parent and female parent.As male parent growing way it is weak when,
Growth can also be accelerated using Activol, auxin, nitrogenous fertilizer, zinc fertilizer to promote male parent；As that can be adopted when male parent or strong maternal growing way
Take and throw off mulch film, water supply time of delaying in advance, delay its precocity less to nitrogenous fertilizer and using the deep intertillage method of being completely cured.
It is a groundwork that seed production corn field prevents and treats tetranychid after hero is taken out, and interior ground seed production corn largely entered newly in recent years
Boundary is bred, and brings the corn ecotype to change, and mite resistance substantially reduces, simultaneously because artificial back and forth in the production of hybrid seeds when taking out hero
Corn field number time, this can cause acarid to spread and cannot get natural contral, along with the reform of drought and irrigation program,
Diffusion harm of the acarid in farming male parent and female parent is exacerbated, the seed production corn underproduction 50%~70% can be caused when serious.
7th, optimum period, cuts off male parent row
The female parent is taken out after hero 30 days or so, is pollinated situation according to female fringe, to cut off male parent corn row (i.e. arrangement in a row
Male parent corn).Cut off male parent corn row and be advantageous to maternal ventilation and penetrating light, be advantageous to machinery spray and kill tetranychid, be more beneficial for machinery
Harvesting corn kind.
8th, the harvest of seed production corn
Seed production corn, which reaches complete ripeness, to be harvested, and general corn content reaches 18%~22%.With mechanical harvest corn
The maize cob is put into the drying of drying section tower or scattered under the sun to 15 centimetres~20 cm thicks after ear of maize and is dried, by institute
State maize cob moisture drop to less than 13% can depart from screening packaging.
Embodiment 2
It can also be 6 days that capsuled seed in embodiment 1, which is basked seeds, and the depth of planting in step 4) described in embodiment 1 may be used also
Think 6cm, the maternal mu application rate can also be 2 kilograms, and the male parent mu application rate can also be 1 kilogram, the female parent
Mu planting density can also be 5000 plants, and the male parent mu planting density can also be 1500 plants.
Embodiment 3
It can also be 4 days that capsuled seed in embodiment 1, which is basked seeds, and the depth of planting in step 4) described in embodiment 1 may be used also
Think 4cm, the maternal mu application rate can also be 3.5 kilograms, and the male parent mu application rate can also be 1.5 kilograms, described
Maternal mu planting density can also be 5500 plants, and the male parent mu planting density can also be 1200 plants.
Embodiment 4
It can also be 4 days that capsuled seed in embodiment 1, which is basked seeds, and the depth of planting in step 4) described in embodiment 1 may be used also
Think 4cm, the maternal mu application rate can also be 3 kilograms, and the male parent mu application rate can also be 2 kilograms, the female parent
Mu planting density can also be 5500 plants, and the male parent mu planting density can also be 1000 plants.
The yield of table 1 and major traits summary sheet
Table 1 chooses 21 different places as experiment by taking beautiful 502 corn varieties (deriving from the Shandong institute of agricultural sciences) of space as an example
Point, while contrasted with common Planting pattern in the prior art and implantation methods of the present invention, and by correlations such as yield
Data record identifies unit in table 1：Inst. of Plant Protection, Heilongjiang Agricultural Science Academy, qualification time 2016.By table
1 is visible, and compared to common Planting pattern, average yield per mu of the invention is higher by 68 kilograms, and here bright implantation methods of the invention are bright
Aobvious have the effect of volume increase, while it can be found that in 21 testing sites of selection, it is beautiful compared to space under traditional planting patterns
502 average product, of the invention 20 point volume increase, in the case of identical environment and seed, again shows that this planting patterns
Maize seed has significant effect of increasing production compared to the maize seed of prior seed method.In addition, can be found by table 1, it is of the invention
The maize seed grain of implantation methods production also has obvious resistant to lodging and folding advantage.
More than, it is only the preferable embodiment of the present invention, but the protection domain invented is not limited thereto, and it is any ripe
Know those skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be defined by the protection domain of claims.
Claims (10)
1. a kind of seed making method of corn variety, comprises the following steps：
1) seed is pre-processed, and chooses seeds, basks seeds；
2) select suitable sowing time and pay attention to adjusting Parent intermission seeding；
3) seedbed preparation, spray herbicide and corn seed field isolation strip is set up；
4) suitable depth of planting, application rate and planting density are selected, starts to sow；First then broken in plastic film mulching before sowing
Film is sowed；During sowing, female parent is embarked on journey sowing, the program request male parent among two rows are maternal.
2. the seed making method of corn variety according to claim 1, it is characterised in that the seed in step 1) is pre-
Handle, choose seeds and bask seeds and comprise the following steps：
Seed is coated processing first；
Secondly choose seeds：From purity more than 98%, germination percentage more than 90% and kind grain not damaged, the capsuled seed of uniformity；
Finally bask seeds：The capsuled seed of above-mentioned selection is basked seeds 2-6 days.
3. the seed making method of corn variety according to claim 2, it is characterised in that the purity of seed typically uses
" isodynamic enzyme " determination method detects；The germination percentage requirement for the capsuled seed chosen is higher than 90%, and specific seed choosing method is as follows：
Take culture dish pad to moisten filter paper, put and state in culture dish after the capsuled seed is counted into 100 moistenings respectively, by above-mentioned culture
Ware is placed on to be recorded the germination of 3,4,5,6 days and pays attention to the moisture humidity and temperature of the incubator respectively in incubator,
The germination percentage of capsuled seed as described in double experiments carry out average computation, the time of basking seeds is 4 day.
4. the seed making method of corn variety according to claim 1, it is characterised in that the sowing time in the step 2)
Choose as follows：The sowing time is depending on ground temperature, soil soil moisture content, it is desirable to as sowing time when ground temperature stabilization is more than 10 DEG C.
5. the seed making method of corn variety according to claim 1, it is characterised in that the concrete operations of the step 3)
Including：
Seedbed preparation：Site preparation is carried out along the diagonal on maize seed ground；
Spray herbicide：After site preparation completion, every mu is uniformly closed with 90% acetochlor ec 80-100 milliliters to soil
Spraying, then raked the soil level, just medicine soil mixed layer reaches more than 10 centimetres；
Set up corn seed field isolation strip：First the perimeter bar field on maize seed ground is investigated, makes crop-planting situation clear, really
When needing isolation surely, carry out 300 meters~500 meters of space isolation or take to stagger the time to sow to isolate to isolate with natural cover to connect
The isolation method of conjunction.
6. the seed making method of corn variety according to claim 1, it is characterised in that the sowing described in step 4) is deep
It is 2-5 kilograms to spend for 2-6cm, the maternal mu application rate, and male parent mu application rate is 1-4 kilograms.
7. the seed making method of corn variety according to claim 6, it is characterised in that the sowing in step 4) is deep
It is 3-3.5 kilograms to spend for 3-5cm, the maternal mu application rate, and male parent mu application rate is 1-2 kilograms.
8. the seed making method of corn variety according to claim 1, it is characterised in that the rupture of membranes in step 4) is broadcast
Kind specifically includes：After plastic film mulching, sowed on the film surface put in order with seeder, after planting mulch film broken hole position wants refinement native
Closing covers tightly.
9. the seed making method of corn variety according to claim 1, it is characterised in that the maternal mu in step 4)
Planting density is 4500-6000 strains, and male parent mu planting density is 1000-1500 strains.
10. according to the seed making method of any one of the claim 7-9 corn varieties, it is characterised in that in step 4)
The depth of planting is 4cm, and the maternal mu application rate is 3.5 kilograms, and male parent mu application rate is 1.5 kilograms, maternal mu plantation
Density is 5500 plants, and male parent mu planting density is 1200 plants.
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| CN113545259A (en) * | 2021-07-20 | 2021-10-26 | 新疆生产建设兵团第九师农业科学研究所(畜牧科学研究所) | Planting method for drip irrigation seed production of corn |
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| CN101032206A (en) * | 2007-05-11 | 2007-09-12 | 王文柱 | High-yield culture technique of corn standard mode |
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| CN101032206A (en) * | 2007-05-11 | 2007-09-12 | 王文柱 | High-yield culture technique of corn standard mode |
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| 高登军: "玉米杂交制种技术规程", 《农业科技与信息》 * |
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|---|---|---|---|---|
| CN113545259A (en) * | 2021-07-20 | 2021-10-26 | 新疆生产建设兵团第九师农业科学研究所(畜牧科学研究所) | Planting method for drip irrigation seed production of corn |
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