CN104938324B - A kind of new beautiful No. 15 producing method for seed of early ripening maize cenospecies - Google Patents
A kind of new beautiful No. 15 producing method for seed of early ripening maize cenospecies Download PDFInfo
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Abstract
The invention belongs to heterosis utilization field, specifically the present invention is a kind of new beautiful No. 15 producing method for seed of early ripening maize cenospecies.The present invention is to be hybridized using heterologous Sister Lines HD103 with former female parent H114, produce sibling species H1314 and be used as female parent, it is new beautiful No. 15 that force 314 makees male parent preparing hybrid kind, so as to improve hybrid seed yield reduction seed costs, at the same new beautiful No. 15 that keep that Sister Lines hybrid seeds prepares with No. 15 uniformity in yield, yield stability, adaptability and economical character of original new jade.The present invention outstanding advantages be：The kind hybrid seed yield is high, new beautiful No. 15 have extensive adaptability, slow in reacting to Thermo-Photo sensitive and environmental difference, resist arid, barren, disaster caused by a windstorm, high temperature, disease ability it is strong, so that it is determined that Yield potential.Field shows fruit ear uniformity, without empty stalk, not bald point, good quality, half dent type, grain color yellow, cutin type.
Description
Technical field
The present invention relates to corn hybrid technical field, new beautiful No. 15 production of hybrid seeds side of more particularly to a kind of early ripening maize cenospecies
Method.
Background technology
Corn is a kind of important cereal crops, and it can be alternatively arranged as oil plant, the energy and pharmacy enterprise as grain, feed
The raw material of industry and be widely used, with very high economic use value.Contribution rate of the corn in China's cereal volume increase total value
For 40%, very important status is occupied in China's grain and Feed Manufacturing.China's early ripening maize be mainly planted in high latitude,
High aititude and accumulated temperature area on the low side.Planting area includes Xinjiang, the Inner Mongol central and north, the Shanxi central and north, Hebei dam Shangdi
Area, county, Aba state of Sichuan province and to the north of the latitude line of Heilungkiang the 3rd.About 4,000,000 hectares of cultivated area, accounts for corn seeding area
1/5-1/6.Early ripening maize nutrient growth and reproductive growth are uncoordinated, and vegetative growth phase is short.The high yield at present, promoted in production,
The high early-maturing variety of hybrid seed yield lacks very much again for high-quality, precocity, disease-resistant, low temperature resistant grouting, and commercial variety is without being poor quality
Be yield poorly, disease resistance it is not strong.
Southern Xinjiang early ripening maize is mainly planted in the areas such as Aksu Prefecture, Kaxgar Prefecture and field, is Xinjiang weight
The two crops a year system area wanted, two-cropping for wheat and corn in one year planting system is the main grain production system in South Sinkiang；North SinKiang is precocious
Corn is mainly planted in Altay, Tacheng etc. and cooled place, is to be harvested for one time each year production model.These areas are mainly Economy in Xinjiang
Relatively less-developed outlying district, is the region that Xinjiang needs that farm pastoral region is given priority to.Corn because of the adaptation advantage of its own,
Certain cultivated area is always maintained in agricultural production, indispensable animal feed and forage grass are supplied, in occupation of spy
Different economic status, is one of low developed area Important Economic pillar.Develop early ripening maize, be conducive to improving the agricultural in this area
Structure is produced, changes single crop production general layout, benign cycle is formed, sustainable total health development is realized.
Parent propagation coefficient is one of key constraints that can Corn Single-Cross Stock be promoted.The parent of early ripening maize is general
With the ripe phase compared with it is early, yield is relatively low, adaptability is poor, part parent is temperature sensitive the features such as, early ripening maize breed parent is numerous
It is always one of higher principal element of corn seed producing cost to grow coefficient low, therefore the line of breeding of the seed of single cross is promoted in research and discussion
Number is particularly important.Breeding high-yield, high-quality, the early ripening maize kind of stable yields, must be requested that with higher hybrid seed yield, just have
Larger promotional value.
Since hybrid corn seed production enters commercialization, Strategy for improvement is prepared using sibling species, it has also become hair
Hybrid seed yield is improved up in national seed industry, an effective way of seed costs is reduced.China Sichuan, Henan, Hebei, Xinjiang
Saved with Shanxi etc. and prepared single No. 2 in improvement using this technology, improvement is red beautiful No. 13, improved seven or three single crosses, Xin Yu No 9 and change
Good cigarette list 14, has been received by remarkable result in production.
The content of the invention
It is relatively low that the technical problems to be solved by the invention are to provide a kind of breeding cost, and yield is high, the jade of good quality
The producing method for seed of the production method of rice cenospecies, the particularly a kind of new jade 15 of early ripening maize cenospecies, to solve existing skill
Above-mentioned multinomial defect caused by art.
To achieve the above object, the present invention provides following technical scheme：A kind of new jade 15 of early ripening maize cenospecies
Producing method for seed, it is characterised in that hybridized by heterologous Sister Lines HD103 with former female parent H114, produces sibling species and makees maternal, then
Use force and 314 make new beautiful No. 15 of male parent preparing hybrid kind, during take security isolation measure；
Maternal production of hybrid seeds process, comprises the following steps：
1) sow
(1) earth's surface uses covering with ground sheeting, and 5cm ground temperature is stable at 10 DEG C, you can sowing；
(2) using program request, production of hybrid seeds pattern on film：HD103 × H114, sibling species HD103 and the H114 same period is sowed；
2) seed manure is managed
(1) it can be intertilled after male parent, female parent are emerged, for the first time intertillage depth 10-14cm, deepen 2- every time later
4cm, is intertilled 2-3 times；
(2) before female parent takes out hero, carry out 2-3 rogueing and rogue；
(3) plant top vane is sprayed during the jointing stage, every mu of 15-25 milliliters of medication is watered 30-40Kg, jade is made
The aqueous solution of rice cycocel；
3) blooming period management
(1) touch bud and take out hero in advance, male work is taken out in end in 10-15 days；
(2) Parent florescence uncoordinated seed farm, by the pollen collecting in male parent powder collecting area to dry container, with hair
Pen dips in pollen and smears maternal female fringe filigree；
(3) male parent 15-30kg/ hectares of filling hearts of phoxim granule pesticide-clay mixture, the medicament envelope of maternal with carrying out production of hybrid seeds surrounding
Close, spraying preventing and treating is carried out with acaricide plus insecticide；
(4) after pollination terminates 5 days, whole male parents are surgeried；
4) harvest
(1) when fruit ear bract turns yellow, loosely completely, there is black layer in grain grain, you can harvest；
(2) removal of impurities fruit ear is removed；
(3) when fruit ear moisture below 18% can threshing, moisture reaches less than 13%, so that it may clean, quantitative package.
New beautiful No. 15 production of hybrid seeds process of cenospecies, comprises the following steps
1) sow
(1) using program request, production of hybrid seeds pattern on film：H1314 (HD103 × H114) × force 314；H114 × force 314, using two
Phase is sowed, and male parent plastic film mulch is first broadcast, and when male parent grows into 2 leaf, 1-3 leaf of the heart, broadcasts female parent；
2) seed manure is managed
(1) after male parent, female parent are emerged, intertilled, for the first time intertillage depth 10-14cm, deepen 2-4cm every time later,
Intertillage 2-3 times.
(2) female parent is taken out before hero, carries out 2-3 rogueing and rogues.
(3) routine observation father, maternal leaf emergence rate and male and female ear differentiation process, adjust the Parent florescence.
(3) plant top vane is sprayed during the jointing stage, every mu of 15-25 milliliters of medication is watered 30-40Kg, jade is made
The aqueous solution of rice cycocel.
3) blooming period management
(1) touch bud and take out hero in advance, male work is taken out in end in 10-15 days.
(2) male parent 15-30kg/ hectares of filling hearts of phoxim granule pesticide-clay mixture, the medicament envelope of maternal with carrying out production of hybrid seeds surrounding
Close, spraying preventing and treating is carried out with acaricide plus insecticide.
(3) plant top vane is sprayed during the jointing stage, every mu of 15-25 milliliters of medication is watered 30-40Kg, jade is made
The aqueous solution of rice cycocel.
(4) after pollination terminates 5 days, whole male parents are surgeried.
4) harvest
(1) when fruit ear bract turns yellow, loosely completely, there is black layer in grain grain, you can harvest；
(2) removal of impurities fruit ear is removed；
(3) when fruit ear moisture below 18% can threshing, moisture reaches less than 13%, so that it may clean, quantitative package.
It is preferred that, described security isolation is isolated including space：At least 500 meters of security isolation distance, in isolated area not
Non- male parent corn must be planted；Time isolates：Other corn varieties of non-male parent corn away from this isolated area kind loose powder phase wrong phase extremely
It is 25 days less.
It is preferred that, it is characterised in that the step 1) sowing in, sowing row than be male parent：Maternal=2：12-14.
It is preferred that, it is characterised in that the step 1) in sowing, the dense planting of sowing is 82500-90000 plants/hectare.
It is preferred that, the step 2) in seed manure management, female parent takes out hero, and the method that bud takes out hero is touched using with leaf, extracts maternal
Tassel.
The maternal method of technology production is handed over the invention provides a kind of corn sisters, HD103 and H114 coordinate by field
Power test, its blood relationship is Fei Ruide group, more similar in the two breeding material genetic constitutions, but have must hybrid it is excellent
Gesture.
Biomaterial HD103 of the present invention, H114, force 314 are disclosed in non-patent literature, and above-mentioned life
Thing material has preservation at applicant, and applicant ensures to provide to the public in 20 years from present patent application day.
H114 is Wai Yin Yugoslavia early ripening maize breeding material.
Force 314 exists《Shaanxi agricultural sciences》Disclosed in 02 phase in 1998 " seed selection and application of military 314 corn inbred line "
Used as breeding material.
HD103 exists《Xinjiang Agricultural Sciences》It is used as and educates disclosed in 03 phase in 1999 " early ripening maize new varieties Xin Yu No 9 "
Plant materials'use.
It is female parent that the present invention, which hybridizes the F1 generation produced using heterologous Sister Lines HD103 and H114, and force 314 is what male parent was prepared
Corn hybrid seed, new beautiful No. 15 feature：The kind time of infertility needs multiple after 2300-2350 DEG C of active accumulated temperature, South Sinkiang wheat
Broadcast breeding time 93 days, sowed in spring 101 days in North SinKiang, seedling leaf sheath aubergine, strain plant type half is compact, 261 centimetres of plant height, Ear height
127 centimetres, 15.92 centimetres of spike length, thick 5.34 centimetres of fringe, tassel row number 16.1, row grain number 32, cob is red, grain weight per panicle 98.3
Gram, 56 grams of mass of 1000 kernel, seed-producing rate 85%, seed yellow, half dent type, fruit ear cartridge type, red axle, quality better.
Advantages and positive effects of the present invention are：
1. yield is high：The kind participates in Xinjiang Early-mid ripening group regional testing for 2004, participates in Xinjiang Early-mid ripening group within 2005
Regional testing and Early-mid ripening group pilot production, than compareing Xin Yu No 9 late-maturing 1.2 days.Regional testing in 2005,77 points of experimental tests are complete
Portion increases, two 12615Kg/ hectares of annual yield, than control volume increase 3.49%, occupies the 2nd.
2. stable yields：Through the 2004-2010 cell examinations from North SinKiang spring sowing area to more than 100, South Sinkiang replay area point time in continuous 7 years
Yan He great areas demonstration result shows that the kind has extensive adaptability, slow in reacting to Thermo-Photo sensitive and environmental difference, resists
Arid, barren, high temperature, disaster caused by a windstorm, disease ability it is strong.
3. better resistance：Through the plant protection unit identification of Kaxgar Prefecture agricultural technology center, No. 15 maize head smut incidences of disease of new jade
For 0, high-resistance corn gall smut, maize head smut, disease resistance and lodging resistance are strong, and later stage protected green degree is good.
4. Quality type：Examined through Xinjiang academy of agricultural sciences test analysis center, No. 15 grain protein (butt) contents of new jade are
10.56%, fatty (butt) content is 4.38%, and starch (butt) content is 74.26%, and ash content (butt) is 1.44%, is reached
To high 2 grades of standards of starch maize.
5. hybrid seed yield is high：The heterologous Sister Lines of the variety adoption do female parent, have both maintained the faint hybrid of maternal Sister Lines
Advantage, improves unit area seed production yields, reduces seed production cost, the yield stability of the kind is maintained again.System
Kind of yield has brought up to 7200-7950Kg/ hectares by original 3000-3750Kg/ hectares, and amount of increase in production is up to 100%.
Embodiment
The following detailed description of the preferred embodiment of the present invention.
Embodiment 1
A kind of new beautiful No. 15 producing method for seed of early ripening maize cenospecies, passes through heterologous Sister Lines HD103 and former female parent H114
Hybridization, produces sibling species and makees maternal, and then useing force 314, to make male parent preparing hybrid kind new beautiful No. 15, during take security isolation
Measure.
Security isolation is isolated including space：At least 500 meters of security isolation distance, must not plant non-male parent beautiful in isolated area
Rice；Time isolates：Other corn varieties of non-male parent corn are at least 25 days away from this isolated area kind loose powder phase wrong phase.
Maternal production of hybrid seeds process, comprises the following steps：
1) sow
(1) 10 DEG C are passed through when 5cm ground temperature is stable, you can sowing, can sowing date for early sowing using covering with ground sheeting；
(2) using program request on film, sibling species HD103 and the H114 same period is sowed, and per hectare plants 82500 plants/hectare, row ratio
Male parent：Maternal=2：12, production of hybrid seeds pattern：HD103×H114.
2) seed manure is managed
(1) it can be intertilled after male parent, female parent are emerged, for the first time intertillage depth 10cm, deepen 4cm every time later, in
Plough 2 times；
(2) female parent is taken out before hero, carries out 2 rogueings and rogues, and totally, thoroughly removes hybrid strain, dominant strain and sick weak plant；
(3) every mu of 20 milliliters of medication is watered 35Kg during the jointing stage, and the aqueous solution of corn cycocel is made, and plant is pushed up
Portion's blade spraying.
3) blooming period management
(1) touch bud and shift to an earlier date emasculation, it is desirable to which clean, thorough, male work is taken out in end in 10 days；
(2) Parent florescence uncoordinated seed farm, by the pollen collecting in male parent powder collecting area to dry container, with hair
Pen dips in pollen and smears maternal female fringe filigree；
(3) male parent is mainly preventing and treating corn borer, cotton sandfly worm, with 15kg/ hectares of filling hearts of phoxim granule pesticide-clay mixture；Female parent is main
If the medicament closing of leafhopper and red spider preventing and treating, the production of hybrid seeds is carried out early surrounding, when field occurs, is added with acaricide kill in time
Worm agent carries out spraying preventing and treating；
(4) after pollination terminates 5 days, whole male parents are surgeried.
4) harvest
(1) fruit ear bract turns yellow, loosely completely, and black layer, which occurs, in grain grain to be harvested；
(2) according to fringe type, grain type, axle color, during tedding, removal of impurities fruit ear is strictly removed；
(3) moisture below 18% can threshing, moisture reaches less than 13%, so that it may clean, quantitative package.
New beautiful No. 15 production of hybrid seeds process of cenospecies of the present invention:
1) sow：
(1) using program request on film, using second phase sowing, male parent plastic film mulch is first broadcast, and when male parent grows into 2.5 leaf, broadcasts female parent,
Per hectare plants 82500 plants/hectare, and row compares male parent：Maternal=2：12, production of hybrid seeds pattern：H1314 (HD103 × H114) × force
314；H114 × force 314；
2) seed manure is managed
(1) it can be intertilled after male parent, female parent are emerged.Intertillage depth 12cm, deepens 3cm every time later for the first time, in
Plough 2 times；
(2) female parent is taken out before hero, carries out 2 rogueings and rogues, and totally, thoroughly removes hybrid strain, dominant strain and sick weak plant；
(3) routine observation father, maternal leaf emergence rate and male and female ear differentiation process, adjust the Parent florescence；
(4) every mu of 25 milliliters of medication is watered 30Kg during the jointing stage, and the aqueous solution of corn cycocel is made, and plant is pushed up
Portion's blade spraying.
3) blooming period management
(1) touch bud and shift to an earlier date emasculation, it is desirable to which clean, thorough, male work is taken out in end in 10 days.
(2) male parent is mainly preventing and treating corn borer, cotton sandfly worm, with 15kg/ hectares of filling hearts of phoxim granule pesticide-clay mixture.Female parent is main
If the medicament closing of leafhopper and red spider preventing and treating, the production of hybrid seeds is carried out early surrounding；When field occurs, added with acaricide kill in time
Worm agent carries out spraying preventing and treating.
(3) every mu of 15 milliliters of medication is watered 35Kg during the jointing stage, be made for concentration 600ppm corn cycocel it is water-soluble
Liquid, sprays to plant top vane.
(4) after pollination terminates 5 days, whole male parents are surgeried.
4) harvest
(1) fruit ear bract turns yellow, loosely completely, and black layer, which occurs, in grain grain to be harvested.
(2) according to fringe type, grain type, axle color, during tedding, removal of impurities fruit ear is strictly removed.
(3) moisture below 18% can threshing, moisture reaches less than 13%, so that it may clean, quantitative package.
Embodiment 2
Compared with Example 1, the main distinction of the present embodiment is：
During the maternal production of hybrid seeds,
1) sow
Per hectare plants 90000 plants/hectare, and row compares male parent：Maternal=2：14；
2) seed manure is managed
(1) depth 10-14cm is intertilled for the first time, deepens 2-4cm every time later, is intertilled 3 times；
(2) female parent is taken out before hero, carries out 3 rogueings and rogues；
(3) every mu of 20 milliliters of medication is watered 40Kg, and the aqueous solution of corn cycocel is made.
3) blooming period management
(1) touch bud and shift to an earlier date emasculation, it is desirable to which clean, thorough, male work is taken out in end in 15 days.
During new beautiful No. 15 production of hybrid seeds of cenospecies,
1) sow
(1) per hectare plants 90000 plants/hectare, and row compares male parent：Maternal=2：14；
2) seed manure is managed
(1) depth 10cm is intertilled for the first time, deepens 3cm every time later, is intertilled 3 times.
(2) female parent is taken out before hero, carries out 3 rogueings and rogues, and totally, thoroughly removes hybrid strain, dominant strain and sick weak plant.
(4) every mu of 15 milliliters of medication is watered 40Kg, and the aqueous solution of corn cycocel is made.
3) blooming period management
Male work is taken out in end in (1) 15 day.
(3) every mu of 20 milliliters of medication is watered 40Kg, and the aqueous solution of corn cycocel is made.
Embodiment 3
Compared with Example 1, the main distinction of the present embodiment is：
During the maternal production of hybrid seeds,
1) sow
Per hectare plants 87000 plants/hectare, and row compares male parent：Maternal=2：13.
2) seed manure is managed
(1) depth 14cm is intertilled for the first time, deepens 3cm every time later, is intertilled 2 times.
(2) 3 rogueings are carried out to rogue, totally, thoroughly removes hybrid strain, dominant strain and sick weak plant.
(3) every mu of 20 milliliters of medication is watered 35Kg, and the aqueous solution of corn cycocel is made.
3) blooming period management
Male work is taken out in end in (1) 13 day.
During new beautiful No. 15 production of hybrid seeds of cenospecies,
1) sow
(1) per hectare plants 87000 plants/hectare, and row compares male parent：Maternal=2：13.
2) seed manure is managed
(1) depth 13cm is intertilled for the first time, deepens 4cm every time later, is intertilled 2 times.
(2) female parent is taken out before hero, carries out 3 rogueings and rogues, and totally, thoroughly removes hybrid strain, dominant strain and sick weak plant.
(4) every mu of 15 milliliters of medication is watered 35Kg during the jointing stage, and the aqueous solution of corn cycocel is made.
3) blooming period management
Male work is taken out in end in (1) 13 day.
(3) every mu of 25 milliliters of medication is watered 40Kg, and the aqueous solution of corn cycocel is made, and plant top vane is sprayed
Mist.
Experimental data see the table below
Table 1:115 4 companies in 2010
| Maternal mode | Area | Yield | Mu cost (member) | Seed costs (member/Kg) |
| H114 | 80 | 196 | 1900 | 9.69 |
| H1314 | 150 | 413 | 1900 | 4.60 |
Table 2:151 3 companies in 2010
| Maternal mode | Area | Yield | Mu cost (member) | Seed costs (member/Kg) |
| H114 | 120 | 237 | 1900 | 8.02 |
| H1314 | 170 | 391 | 1900 | 4.86 |
Table 3:152 9 companies in 2011
| Maternal mode | Area | Yield | Mu cost (member) | Seed costs (member/Kg) |
| H114 | 60 | 227 | 2000 | 8.81 |
| H1314 | 230 | 408 | 2000 | 4.90 |
The present invention is maternal using heterologous Sister Lines HD103 and H114 hybridization generations, and force 314 is the corn hybridization that male parent is prepared
Kind, new beautiful No. 15 feature：The kind time of infertility replays breeding time after needing 2300-2350 DEG C of active accumulated temperature, South Sinkiang wheat
93 days, sowed in spring 101 days in North SinKiang, seedling leaf sheath aubergine, strain plant type half is compact, 261 centimetres of plant height, 127 centimetres of Ear height,
15.92 centimetres of spike length, thick 5.34 centimetres of fringe, tassel row number 16.1, row grain number 32, cob is red, 98.3 grams of grain weight per panicle, mass of 1000 kernel
56 grams, seed-producing rate 85%, seed yellow, half dent type, fruit ear cartridge type, red axle, quality better.
Advantages and positive effects of the present invention are：
1. yield is high：The kind participates in Xinjiang Early-mid ripening group regional testing for 2004, participates in Xinjiang Early-mid ripening group within 2005
Regional testing and Early-mid ripening group pilot production, than compareing Xin Yu No 9 late-maturing 1.2 days.Regional testing in 2005,77 points of experimental tests are complete
Portion increases, two 12615Kg/ hectares of annual yield, than control volume increase 3.49%, occupies the 2nd.
2. stable yields：Through the 2004-2010 cell examinations from North SinKiang spring sowing area to more than 100, South Sinkiang replay area point time in continuous 7 years
Yan He great areas demonstration result shows that the kind has extensive adaptability, slow in reacting to Thermo-Photo sensitive and environmental difference, resists
Arid, barren, high temperature, disaster caused by a windstorm, disease ability it is strong.
3. better resistance：Through the plant protection unit identification of Kaxgar Prefecture agricultural technology center, No. 15 maize head smut incidences of disease of new jade
For 0, high-resistance corn gall smut, maize head smut, disease resistance and lodging resistance are strong, and later stage protected green degree is good.
4. Quality type：Examined through Xinjiang academy of agricultural sciences test analysis center, No. 15 grain protein (butt) contents of new jade are
10.56%, fatty (butt) content is 4.38%, and starch (butt) content is 74.26%, and ash content (butt) is 1.44%, is reached
To high 2 grades of standards of starch maize.
5. hybrid seed yield is high：The heterologous Sister Lines of the variety adoption do female parent, have both maintained the faint hybrid of maternal Sister Lines
Advantage, improves unit area seed production yields, reduces seed production cost, the yield stability of the kind is maintained again.System
Kind of yield has brought up to 7200-7950Kg/ hectares by original 3000-3750Kg/ hectares, and amount of increase in production is up to 100%.
Above-described is only the preferred embodiment of the present invention, it is noted that for one of ordinary skill in the art
For, without departing from the concept of the premise of the invention, some changes and improvements can also be made, these belong to the present invention
Protection domain.
Claims (2)
1. a kind of new beautiful No. 15 producing method for seed of early ripening maize cenospecies improvement, it is characterised in that pass through heterologous Sister Lines HD103
Hybridize with former female parent H114, produce sibling species H1314 and make maternal, then use force and 314 make male parent preparing hybrid kind improvement new beautiful 15
Number；
The maternal production of hybrid seeds process, comprises the following steps：
1) sow
(1) earth's surface uses covering with ground sheeting, is sowed when 5cm ground temperature stabilization is more than 10 DEG C；
(2) using program request, production of hybrid seeds pattern on film：HD103 × H114, Sister Lines HD103 and the H114 same period is sowed；
2) seed manure is managed
(1) male parent, female parent are intertilled after emerging, for the first time intertillage depth 10-14cm, deepen 2-4cm every time later, intertill 2-
3 times；
(2) before female parent takes out hero, carry out 2-3 rogueing and rogue；
(3) plant top vane is sprayed during the jointing stage, every mu of 15-25 milliliters of medication is watered 30-40Kg, and concentration, which is made, is
The aqueous solution of 600-800ppm corn cycocel；
3) blooming period management
(1) touch bud and take out hero in advance, male work is taken out in end in 10-15 days；
(2) Parent florescence uncoordinated seed farm, by the pollen collecting in male parent powder collecting area to dry container, is dipped in writing brush
Pollen smears maternal female fringe filigree；
(3) male parent 15-30kg/ hectares of filling hearts of phoxim granule pesticide-clay mixture, the medicament closing of maternal with carrying out production of hybrid seeds surrounding, are used
Acaricide adds insecticide to carry out spraying preventing and treating；
(4) after pollination terminates 5 days, whole male parents are surgeried；
4) harvest
(1) when fruit ear bract turns yellow, loosely completely, there is black layer in grain grain, harvests；
(2) removal of impurities fruit ear is removed；
(3) when the threshing below 18% of fruit ear moisture, moisture reach less than 13% clean, quantitative package；
New beautiful No. 15 production of hybrid seeds process of cenospecies improvement, comprises the following steps：
1) sow
(1) using program request, production of hybrid seeds pattern on film：Sibling species H1314 × force 314, using second phase sowing, male parent plastic film mulch is first broadcast, when
When male parent grows into 2 leaf, 1-3 leaf of the heart, female parent is broadcast；
2) seed manure is managed
(1) after male parent, female parent are emerged, intertilled, for the first time intertillage depth 10-14cm, deepen 2-4cm, intertillage every time later
2-3 times；
(2) female parent is taken out before hero, carries out 2-3 rogueing and rogues；
(3) routine observation father, maternal leaf emergence rate and male and female ear differentiation process, adjust the Parent florescence；
(4) plant top vane is sprayed during the jointing stage, every mu of 15-25 milliliters of medication is watered 30-40Kg, corn is made short
Strengthen the aqueous solution of element；
3) blooming period management
(1) touch bud and take out hero in advance, male work is taken out in end in 10-15 days；
(2) male parent 15-30kg/ hectares of filling hearts of phoxim granule pesticide-clay mixture, the medicament closing of maternal with carrying out production of hybrid seeds surrounding, are used
Acaricide adds insecticide to carry out spraying preventing and treating；
(3) plant top vane is sprayed during the jointing stage, every mu of 15-25 milliliters of medication is watered 30-40Kg, corn is made short
Strengthen the aqueous solution of element；
(4) after pollination terminates 5 days, whole male parents are surgeried；
4) harvest
(1) when fruit ear bract turns yellow, loosely completely, there is black layer in grain grain, harvests；
(2) removal of impurities fruit ear is removed；
(3) when the threshing below 18% of fruit ear moisture, moisture reach less than 13%, clean, quantitative package；
The step 1) sowing in, sowing row than be male parent：Maternal=2：12-14,
The step 1) in sowing, the dense planting of sowing is 82500-90000 plants/hectare,
The step 2) in seed manure management, female parent takes out hero, and the method that bud takes out hero is touched using with leaf, extracts maternal tassel.
2. new beautiful No. 15 producing method for seed of early ripening maize cenospecies improvement as claimed in claim 1, it is characterised in that the preparation
During take security isolation measure, security isolation includes space isolation：At least 500 meters of security isolation distance, in isolated area
Non- male parent corn must not be planted；Time isolates：Other corn varieties of non-male parent corn are away from this isolated area kind loose powder phase wrong phase
At least 25 days.
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| CN105794629A (en) * | 2016-03-24 | 2016-07-27 | 甘肃省敦煌种业股份有限公司研究院 | Production method of hybrid corn seeds |
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| CN103168675B (en) * | 2013-02-28 | 2015-05-06 | 新疆农业科学院粮食作物研究所 | High-yield seed production method of early-ripening maize |
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