CN101828523B - Seed production method of hybrid rice - Google Patents
Seed production method of hybrid rice Download PDFInfo
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- CN101828523B CN101828523B CN2010101895044A CN201010189504A CN101828523B CN 101828523 B CN101828523 B CN 101828523B CN 2010101895044 A CN2010101895044 A CN 2010101895044A CN 201010189504 A CN201010189504 A CN 201010189504A CN 101828523 B CN101828523 B CN 101828523B
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Abstract
The invention discloses a seed production method of hybrid rice, which comprises the following steps of: (1) sowing of seeds and culture of seedlings: determining the sowing time according to the sowing periods of a male parent and a female parent to enable the flowering periods of the male parent and the female parent to be synchronized; (2) field management: carrying out water draining and field drying management based on shallow water mainly, covering the water in time after field drying to prevent and eliminate plant diseases and insect pests, and spraying '920' with power-operated spraying and dusting equipment to expel male parent pollen; (3) impurity prevention and preservation of pure state: ensuring that no sticky rice exists in the range of 200 meters beyond a seed production region and only the male parents of the seed production combination can be planted in the range of 20 meters beyond the seed production region, and killing off abnormal plants before flowering of cereal crops and loosing of powder to ensure the seed purity; and (4) harvesting and storing: cutting off the male parents in the seed farm to ensure that no male parent exists in the seed farm, and clearing a harvesting machine in the processes of harvesting and going to the field to ensure that no other seeds and impurities exist in the harvesting machine. The invention has the characteristics of high working efficiency, less labor demands, low cost, high purity, high quality, high yield and the like.
Description
Technical field:
The invention belongs to agricultural technology field, specifically, relate to a kind of hybrid rice seed breeding process.
Background technology:
Hybrid rice produces through different seed rice phase mutual crosses, dependence be maternal two objects with it, i.e. " three are " (male sterile line, maintenance line and recovery system).On producing, to plant a breeding field and a seed farm; Breeding field plantation male sterile line and maintenance line; When they were all bloomed, maintenance line sent pollen to male sterile line by means of media such as wind, worm, water, birds, and it is solid that male sterile line obtains normal pollen; The offspring who produces remains male sterile line, reaches the breeding male sterile lines purpose.We can be with breeding the male-sterile seed of coming; Keeping a part continues to breed the coming year; Another part is the production of hybrid seeds with recovering then, and when the male sterile line of seed farm was all bloomed with recovery system, the pollen that recovers system sent male sterile line to; The offspring that male sterile line produces just provides the hybrid rice seed of field planting.
Because the production of hybrid seeds program of hybrid rice bothers very much, must rely on a large amount of workmans and work and could accomplish, for example carry out manual work and catch up with powder, work such as sprayer spraying pesticide by hand with the long rod of bamboo pole and so on.So not only inefficiency, and numerous workman is disorder when operation, and the easy damaged plant influences plant normal growth.In addition, manual work catches up with the randomness of powder very big, and catching up with powder inhomogeneous is ordinary affair, and this will have a strong impact on quality and the output of hybrid rice, moreover catches up with powder, spraying pesticide to need a large amount of manual works and time, and this certainly will increase breeding cost.Moreover if when running into the not enough situation of labourer, a large amount of production of hybrid seeds work can't be accomplished, and have a strong impact on the development prospect that breeding of hybrid rice is produced.
The applicant has applied for that to State Intellectual Property Office name is called the utility model patent of " motor-driven spray duster device conduit " on April 30th, 2010; It has broken through traditional one-way fluid export structure; Adopt the bidirectional fluid export structure, can in implementing production, be convenient to the large tracts of land operation.The present invention will combine it to realize the hybrid rice seed breeding process of saving of labor, efficient, high yield.
Summary of the invention:
The present invention is directed to the deficiency of above-mentioned prior art, provide a kind of output of crossbreed that can make to be greatly improved, and save manual work, raise the efficiency the hybrid rice seed breeding process that reduces cost.
The objective of the invention is to adopt following technical proposals to realize:
A kind of hybrid rice seed breeding process may further comprise the steps:
(1). seeding and seedling raising
1.. according to father and mother this sowing time, reserve the sowing time, guarantee this flower synchronization of father and mother;
2.. apply fertilizer smoothly the male parent Tanaka that grows seedlings, adopt the seedling of vernalization pendulum broadcast mode;
3.. male parent is topdressed;
4.. prevention and elimination of disease and pests;
5.. open the railway carriage or compartment with 300～333cm and transplant male parent, the big two row pendulum of male parent are broadcast, and keep the aisle in the ranks of 40～50cm width;
6.. maternal sow with the sprout-forcing direct-seeding mode, this spacing of father and mother is 18～24cm;
7.. this row of father and mother is than being 2: 14～16;
8.. topdress.
(2) field management
1.. with the shallow water is the main draining dry field management of carrying out, and in time covers water after the solarization, prevents and kill off disease pest and weed;
2.. detect this florescence of father and mother, guarantee father and mother's flower synchronization originally;
3.. the motor-driven spray duster device with two-way shower nozzle sprays " 920 ", and every mu of usefulness " 920 " 16～20g divides three uses, is for the first time seeing that fringe 30%～35% o'clock converts water 45～55kg foliage-spray with 6～8g " 920 "; For the second time when seeing that fringe 50% is above, convert water 55～65kg foliage-spray with 8～10g " 920 "; , convert water 25～35kg with 1～2g " 920 " and singly spray male parent when above in heading 70% for the third time.
4.. catch up with paternal pollen with motor-driven spray duster device
A. with the motor-driven spray duster device conduit of two-way air outlet, being placed on 5～10cm place under the spike of rice, is that the mode of media is caught up with powder with wind;
B. initial bloom stage and Flowers ending are caught up with powder 1～2 time every day, and full-bloom stage is caught up with powder 3～4 times every day.
5.. prevention and elimination of disease and pests.
(3) anti-assorted guarantor is pure
1.. be strictly on guard against in the storage to harvesting and mix growing seedlings;
2.. guarantee 200 meters interior no glutinous paddy of scope outside the production of hybrid seeds district, can only plant the male parent that this production of hybrid seeds is made up in 20 meters scopes outside the production of hybrid seeds district;
3.. the strain of before the flowering loose powder, will mixing is eliminated, and guarantees seed purity.
(4) harvesting storage
1.. shine seed farm;
2.. cut off the male parent in the seed farm, guarantee none strain male parent in the seed farm;
3.. the cleaning grain header, guaranteeing does not have other seed and foreign material in the grain header, and the grain header harvesting is gone to the field;
4.. receive and beat, ted;
5.. storage.
The motor-driven spray duster device of said field management adopts the conduit with bidirectional fluid outlet, realizes that large tracts of land sprays and/or catch up with powder.
The fertilising of said seeding and seedling raising step in 2. is every mu of personnel selection animal manure 1200～1800kg, phosphate fertilizer 30～40kg, carbon ammonium 30～40kg/ urea 7～10kg, potash fertilizer 5～10kg, zinc fertilizer 1～2kg.
The vernalization pendulum broadcast mode seedling of said seeding and seedling raising step in 2. is to open the railway carriage or compartment with 170～200cm, clean railway carriage or compartment face 140～150cm, long 3500～4000cm; The specification of every nest is 10～13cm * 10～13cm; 2～4 paddy of every nest are put in right-angled intersection place, recurrence arch epiphragma.
It is wholeheartedly to begin to topdress with two leaves that the male parent of said seeding and seedling raising step in 3. topdressed, and every long a slice leaf chases after disposable fertilizer, and the seedling plate floods shallow water simultaneously, is main to do wet, cultivates into the strong seedling of many tillers.
The weeding of preventing and kill off disease pest and weed in the said field management 1. with every mu spray 90～120g sweep Fu Te or every mu spray 20～30g agricultural real weeding, sprayed and covered wheat husk again.
Spraying of " 920 " will evenly be sprayed onto on the seedling leaf in the said field management 3..
The invention has the beneficial effects as follows:
The present invention adopts motor-driven spray duster device to replace a large amount of artificial works; This has not only improved operating efficiency and output; And reduced demand to a large amount of labourers, practiced thrift the expenditure of a large amount of labourer's wages, thereby breeding cost is able to reduce significantly; Bring considerable profit volume for production of hybrid seeds enterprise, be able to material benefit also for the vast farmers friend; Moreover; Use motor-driven spray duster device to catch up with powder and manual work to catch up with powder to compare; It is more even that motor-driven spray duster device catches up with powder to make that paternal pollen disseminates; Improved maternal ripening rate, thereby improved breeding of hybrid rice output, the results showed that catching up with powder to improve the output ratio with motor-driven spray duster device increases by 10% at least; In addition, adopt motor-driven spray duster device to avoid the damage of numerous manual works, guarantee their normal growths the field plant.
The present invention protects pure work strict control to anti-assorted in the production of hybrid seeds program, has stopped assorted strain plant and has sneaked in the crossbreed with maternal pollination result and other seeds, and the purity of crossbreed is greatly enhanced; Scientific rationalization the field fertilising of growing seedlings, the necessary nutritive element that Hybrid Rice Seedling is grown up is guaranteed, and makes the quality of hybrid rice seed and output be improved.It has that operating efficiency is fast, labourer's demand is few, cost is low, purity is high, quality is high and characteristics such as output height.
Explain respectively that with the form of tabulation the present invention is to labourer's demand, wage for workmen's spending and working efficiency situation below.
The traditional seeding technique of table 1 and labourer's demand of the present invention and the wage for workmen contrast of paying wages
Can find out from table 1: the present invention has reduced the demand to manual work significantly, has saved the many labor wage of twice.
Traditional seeding technique of table 2 and operating efficiency of the present invention contrast
Can find out from table 2: operating efficiency of the present invention is that the twice of conventional art is many at least.
Embodiment:
Embodiment 1
The present invention includes following steps (producing method for seed with should fragrant 2308 kinds is an example):
(1). seeding and seedling raising
1.. generally speaking, male parent March 20, maternal April 15; 27 days time differences, leaf differs from 5.6, and male parent is broadcast 117 days phases beginning; Female parent is broadcast 90 days phases beginning, estimates that fringe time beginning of male parent is July 15, and maternal fringe time beginning is July 14; The consumption of every mu of ground male parent is 0.5kg, reserves the sowing time with this, guarantees the flower synchronization of father, female parent; 2.. male parent every mu in the field personnel selection animal manure 1500kg that grows seedlings, phosphate fertilizer 35kg, carbon ammonium 35kg, also available urea replaces the carbon ammonium, and the consumption of urea is 10kg, potash fertilizer 7.5kg, zinc fertilizer 2kg, the field of will growing seedlings after fertilising finishes is smooth.Adopt the seedling of vernalization pendulum broadcast mode, 180cm opens the railway carriage or compartment, and clean railway carriage or compartment face is 140cm, long 4000cm, and the specification of every nest is 10cm * 10cm, 2 paddy of every nest are put in right-angled intersection place, recurrence arch epiphragma; 3.. male parent two leaves wholeheartedly begin to topdress, and by the principle fertilising of having many meals but little food at eath, every long a slice leaf chases after disposable fertilizer, and the seedling plate floods shallow water simultaneously, are main to do wet, make great efforts to cultivate into the strong seedling of many tillers; 4.. the male parent field attention control damage by disease and insect of growing seedlings, with the rice blast rice thrips controlling object of attaching most importance to; 5. transplant male parent about the .5 month 15, open the railway carriage or compartment with 330cm, the big two row pendulum of male parent are broadcast, and keep the aisle in the ranks of 45cm width; 6. about the .5 month 16, be the female parent of 3.5kg with weight, adopt the mode of sprout-forcing direct-seeding evenly to sow, the spacing between father, female parent is 18cm; 7.. father, maternal row be than being 2: 16, maternally should note avoiding being seeded in the male parent row when live; 8.. the maternal fertilizer that uses is clear together, and the mu consumption is farmyard manure 1250kg, carbon ammonium 40kg, phosphate fertilizer 40kg, potash fertilizer 12kg, zinc fertilizer 2kg.Male parent need be attacked 1-2 time separately.
Seeding and seedling raising will be guaranteed basic seedling male parent more than 40,000 seedlings, and female parent seedling is more than 150,000 seedlings.Father, female parent after planting all will spray sweeps not special 95g/ mu or agricultural real 22g/ mu weeding, covers wheat husk etc. again.Father, female parent are all mixed bud paddy with paclobutrazol, per kilogram seed 1.2g.
(2) field management
1.. the field is main with shallow water, and late June is conscientiously done a good job of it the work of draining dry field, with leaf fade, root turns over Bai Weijia, in time covers water after the solarization, notes preventing and kill off disease pest and weed; 2.. in time, conscientiously detect father, maternal florescence, can artificially assist in case of necessity, guarantee the flower synchronization of father, female parent; 3.. with the conduit with bidirectional fluid outlet, the mode so that power driven sprayer sprays sprays " 920 ", and every mu of usefulness " 920 " 17g divides three uses, and seeing that fringe 30%～35% o'clock converts water 45kg foliage-spray with 7g " 920 " first time; For the second time when seeing that fringe 50% is above, convert water 52kg foliage-spray with 8g " 920 "; When above, convert water 25kg single spray male parent with 2g " 920 " in heading 70% for the third time, liquid medicine will evenly be sprayed onto on the seedling leaf, more than loses to wrap neck for well; 4.. motor-driven spray duster device adopts the conduit with bidirectional fluid outlet, and the power driven sprayer conduit of two-way air outlet is placed on 6cm place under the spike of rice, and the wind in the motor-driven spray duster device sprays from two fluid issuings simultaneously; Wind direction is from down on two skew backs, realizes that with the mode of jag large tracts of land catches up with powder, and the size of wind-force is decided with the adjusting situation of motor-driven spray duster device throttle; Sometimes according to weather condition, timely adjustment is when for example having gentle breeze; The throttle of then motor-driven spray duster device is turned down a little; Then should breeze up when calm, require pace even when catching up with powder, speed per hour be 8km/ hour for well.Initial bloom stage and Flowers ending are caught up with powder 2 times every day, and full-bloom stage is caught up with powder 4 times every day; 5.. anti-rice blast, rice kernel smut and other damage by disease and insect cured.
Above-mentioned motor-driven spray duster device conduit the structure that is the applicant on April 30th, 2010 to " the motor-driven spray duster device conduit " of State Intellectual Property Office's application; Radially angle between its two fluid issuings is 90 °～180 °; Generally; The top of conduit is an enclosed construction, and two fluid issuings are located at the conduit both sides.These two fluid issuings also can be located at the top of conduit, and two fluid issuings are respectively equipped with a conduit, and two conduits are " Y " shape with conduit, and the axial angle that props up between the conduit is 90 °～180 °.No matter fluid issuing is provided in a side of conduit both sides or top, the fluid air outlet is flat-shaped structure.
(3) anti-assorted guarantor is pure
1.. be strictly on guard against in the storage to harvesting and mix growing seedlings, for example in processes such as vernalization, sowing, transplanting, results, storages; 2.. conscientiously planning, carry out isolation work, guarantee 200 meters interior no glutinous paddy of scope outside the production of hybrid seeds district, can only plant the male parent that this production of hybrid seeds is made up in 20 meters scopes outside the production of hybrid seeds district; 3.. take charge of impurity elimination work severely at seedling stage, initial bloom stage, full-bloom stage, eliminate assorted strain before the flowering loose powder with all strength, guarantee seed purity.
(4). the harvesting storage
1.. before harvesting, shone seed farm, grain header can't be gone to the field when avoiding seed maturity; 2.. before harvesting, should all cut off the male parent in the seed farm, and will guarantee none strain male parent in the seed farm to each the row scrutiny that slices off; 3.. before grain header harvesting is gone to the field, must carry out careful cleaning to grain header, guaranteeing does not have other seed and foreign material in the grain header, prevent mechanical admixture, after cleaning out, the grain header harvesting of can going to the field; 4.. grain header must be noted the size of wind-force in the harvesting process, can not blow out full seed, under grain header, cuts and carries and also will note when cutting not overwhelming spike of rice in the rice field; 5.. in time rob fine receipts and beat, ted, notice preventing that fringe from sprouting, pile fertile, preserve.
Embodiment 2
The present invention includes following steps (with in the producing method for seed of excellent 18 kinds be example):
(1). seeding and seedling raising
1.. generally speaking, male parent March 20, maternal May 20; 60 days time differences, leaf differs from 10.7, and male parent is broadcast 123 days phases beginning; Female parent is broadcast 63 days phases beginning, estimates that fringe time beginning of male parent is July 21, and maternal fringe time beginning is July 22; The consumption of every mu of ground male parent is 0.5kg, reserves the sowing time with this, guarantees the flower synchronization of father, female parent; 2.. male parent every mu in the field personnel selection animal manure 1500kg that grows seedlings, phosphate fertilizer 40kg, carbon ammonium 40kg, also available urea replaces the carbon ammonium, and the consumption of urea is 10kg, potash fertilizer 7.5kg, zinc fertilizer 2kg, the field of will growing seedlings after fertilising finishes is smooth.Adopt the seedling of vernalization pendulum broadcast mode, 195cm opens the railway carriage or compartment, and clean railway carriage or compartment face is 150cm, long 3650cm, and the specification of every nest is 12cm * 12cm, 4 paddy of every nest are put in right-angled intersection place, recurrence arch epiphragma; 3.. male parent two leaves wholeheartedly begin to topdress, and by the principle fertilising of having many meals but little food at eath, every long a slice leaf chases after disposable fertilizer, and the seedling plate floods shallow water simultaneously, are main to do wet, make great efforts to cultivate into the strong seedling of many tillers; 4.. the male parent field attention control damage by disease and insect of growing seedlings, with the rice blast rice thrips controlling object of attaching most importance to; 5. transplant male parent about the .5 month 14, open the railway carriage or compartment with 305cm, the big two row pendulum of male parent are broadcast, and keep the aisle in the ranks of 50cm width; 6. about the .5 month 20, be the female parent of 3.25kg with weight, adopt the mode of sprout-forcing direct-seeding evenly to sow, this spacing of father and mother is 23cm; 7.. this row of father and mother is than being 2: 14, maternally should note avoiding being seeded in the male parent row when live; 8.. the maternal fertilizer that uses is clear together, and the mu consumption is farmyard manure 1500kg, carbon ammonium 35kg, phosphate fertilizer 25kg, potash fertilizer 15kg, zinc fertilizer 2kg.Male parent need be used urea 5kg at back 7 days mu of transplanting.
Seeding and seedling raising will be guaranteed basic seedling male parent more than 40,000 seedlings, and female parent seedling is more than 150,000 seedlings.Father, female parent after planting all will spray sweeps not special 118g/ mu or agricultural real 29g/ mu weeding, covers wheat husk etc. again.Father, female parent are all mixed bud paddy with paclobutrazol, per kilogram seed 1.2g.
(2) field management
1.. the field is main with shallow water, and late June is conscientiously done a good job of it the work of draining dry field, with leaf fade, root turns over Bai Weijia, in time covers water after the solarization, notes preventing and kill off disease pest and weed; 2.. in time, conscientiously detect father, maternal florescence, can artificially assist in case of necessity, guarantee the flower synchronization of father, female parent; 3.. with the conduit with bidirectional fluid outlet, the mode so that power driven sprayer sprays sprays " 920 ", and every mu of usefulness " 920 " 20g divides three uses, and seeing that fringe 30%～35% o'clock converts water 45kg foliage-spray with 8g " 920 " first time; For the second time when seeing that fringe 50% is above, convert water 52kg foliage-spray with 10g " 920 "; When above, convert water 25kg single spray male parent with 2g " 920 " in heading 70% for the third time, liquid medicine will evenly be sprayed onto on the seedling leaf, more than loses to wrap neck for well; 4.. motor-driven spray duster device adopts the conduit with bidirectional fluid outlet, and the power driven sprayer conduit of two-way air outlet is placed on 9cm place under the spike of rice, and the wind in the motor-driven spray duster device sprays from two fluid issuings simultaneously; Wind direction is from down on two skew backs, realizes that with the mode of jag large tracts of land catches up with powder, and the size of wind-force is decided with the adjusting situation of motor-driven spray duster device throttle; Sometimes according to weather condition, timely adjustment is when for example having gentle breeze; The throttle of then motor-driven spray duster device is turned down a little; Then should breeze up when calm, require pace even when catching up with powder, speed per hour be 8km/ hour for well.Initial bloom stage and Flowers ending are caught up with powder 2 times every day, and full-bloom stage is caught up with powder 4 times every day; 5.. anti-rice blast, rice kernel smut and other damage by disease and insect cured.
Above-mentioned motor-driven spray duster device guide-tube structure is identical with embodiment 1.
(3) anti-assorted guarantor is pure
1.. be strictly on guard against in the storage to harvesting and mix growing seedlings, for example in processes such as vernalization, sowing, transplanting, results, storages; 2.. conscientiously planning, carry out isolation work, guarantee 200 meters interior no glutinous paddy of scope outside the production of hybrid seeds district, can only plant the male parent that this production of hybrid seeds is made up in 20 meters scopes outside the production of hybrid seeds district; 3.. take charge of impurity elimination work severely at seedling stage, initial bloom stage, full-bloom stage, eliminate assorted strain before the flowering loose powder with all strength, guarantee seed purity.
(4). the harvesting storage
1.. before harvesting, shone seed farm, grain header can't be gone to the field when avoiding seed maturity; 2.. before harvesting, should all cut off the male parent in the seed farm, and will guarantee none strain male parent in the seed farm to each the row scrutiny that slices off; 3.. before grain header harvesting is gone to the field, must carry out careful cleaning to grain header, guaranteeing does not have other seed and foreign material in the grain header, prevent mechanical admixture, after cleaning out, the grain header harvesting of can going to the field; 4.. grain header must be noted the size of wind-force in the harvesting process, can not blow out full seed, under grain header, cuts and carries and also will note when cutting not overwhelming spike of rice in the rice field; 5.. in time rob fine receipts and beat, ted, notice preventing that fringe from sprouting, pile fertile, preserve.
Claims (7)
1. hybrid rice seed breeding process may further comprise the steps:
(1). seeding and seedling raising
1.. according to father and mother this sowing time, reserve the sowing time, guarantee this flower synchronization of father and mother;
2.. apply fertilizer smoothly the male parent Tanaka that grows seedlings, adopt the seedling of vernalization pendulum broadcast mode;
3.. male parent is topdressed;
4.. prevention and elimination of disease and pests;
5.. open the railway carriage or compartment with 300～333cm and transplant male parent, the big two row pendulum of male parent are broadcast, and keep the aisle in the ranks of 40～50cm width;
6.. maternal sow with the sprout-forcing direct-seeding mode, this spacing of father and mother is 18～24cm;
7.. this row of father and mother is than being 2: 14～16;
8.. topdress;
(2) field management
1.. with the shallow water is the main draining dry field management of carrying out, and in time covers water after the solarization, prevents and kill off disease pest and weed;
2.. detect this florescence of father and mother, guarantee father and mother's flower synchronization originally;
3.. the motor-driven spray duster device with two-way shower nozzle sprays " 920 ", and every mu of usefulness " 920 " 16～20g divides three uses, for the first time converts water 45～55kg foliage-spray heading 30%～35% o'clock with 6～8g " 920 "; For the second time when heading 50% is above, convert water 55～65kg foliage-spray with 8～10g " 920 "; , convert water 25～35kg with 1～2g " 920 " and singly spray male parent when above in heading 70% for the third time;
4.. catch up with paternal pollen with motor-driven spray duster device
A. with the motor-driven spray duster device conduit of two-way air outlet, being placed on 5～10cm place under the spike of rice, is that the mode of media is caught up with powder with wind;
B. initial bloom stage and Flowers ending are caught up with powder 1～2 time every day, and full-bloom stage is caught up with powder 3～4 times every day;
5.. prevention and elimination of disease and pests;
(3) anti-assorted guarantor is pure
1.. be strictly on guard against in the storage to harvesting and mix growing seedlings;
2.. guarantee 200 meters interior no glutinous paddy of scope outside the production of hybrid seeds district, can only plant the male parent that this production of hybrid seeds is made up in 20 meters scopes outside the production of hybrid seeds district;
3.. the strain of before the flowering loose powder, will mixing is eliminated, and guarantees seed purity;
(4). the harvesting storage
1.. shine seed farm;
2.. cut off the male parent in the seed farm, guarantee none strain male parent in the seed farm;
3.. the cleaning grain header, guaranteeing does not have other seed and foreign material in the grain header, and the grain header harvesting is gone to the field;
4.. receive and beat, ted;
5.. storage.
2. hybrid rice seed breeding process according to claim 1 is characterized in that: the motor-driven spray duster device of said field management adopts the conduit with bidirectional fluid outlet, realizes that large tracts of land sprays and/or catch up with powder.
3. hybrid rice seed breeding process according to claim 1 is characterized in that: the fertilising of said seeding and seedling raising step in 2. is every mu of personnel selection animal manure 1200～1800kg, phosphate fertilizer 30～40kg, carbon ammonium 30～40kg/ urea 7～10kg, potash fertilizer 5～10kg, zinc fertilizer 1～2kg.
4. hybrid rice seed breeding process according to claim 1; It is characterized in that: the vernalization pendulum broadcast mode seedling of said seeding and seedling raising step in 2. is to open the railway carriage or compartment with 170～200cm, clean railway carriage or compartment face 140～150cm, long 3500～4000cm; The specification of every nest is 10～13cm * 10～13cm; 2～4 paddy of every nest are put in right-angled intersection place, recurrence arch epiphragma.
5. hybrid rice seed breeding process according to claim 1; It is characterized in that: it is wholeheartedly to begin to topdress with two leaves that the male parent of said seeding and seedling raising step in 3. topdressed, and every long a slice leaf chases after disposable fertilizer, and the seedling plate floods shallow water simultaneously; To do wet is main, cultivates into the strong seedling of many tillers.
6. hybrid rice seed breeding process according to claim 1 is characterized in that: the weeding of preventing and kill off disease pest and weed in the said field management 1. sprays 90～120g with every mu and sweeps Fu Te or every mu and spray the weeding of 20～30g Nongdeshi, has sprayed and has covered wheat husk again.
7. hybrid rice seed breeding process according to claim 1 is characterized in that: spraying of " 920 " will evenly be sprayed onto on the seedling leaf in the said field management 3..
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| CN2010101895044A CN101828523B (en) | 2010-05-28 | 2010-05-28 | Seed production method of hybrid rice |
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| CN2010101895044A CN101828523B (en) | 2010-05-28 | 2010-05-28 | Seed production method of hybrid rice |
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| CN101828523B true CN101828523B (en) | 2012-07-04 |
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| CN102283105A (en) * | 2011-07-14 | 2011-12-21 | 湖南省水稻研究所 | Hybrid rice seed production method through one-step gibberellin spray |
| CN103477975A (en) * | 2013-10-14 | 2014-01-01 | 贵州红四方农业发展有限公司 | Method for increasing seed production yield of hybrid rice 'Fengliangyou No.4' |
| CN108112433B (en) * | 2017-12-18 | 2020-06-23 | 湖南农业大学 | Seed production method for improving hybrid rice seed vitality |
| CN109042292B (en) * | 2018-08-03 | 2021-12-28 | 武汉大学 | Hybrid rice seed production method for parents of rice transplanting at same period |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1014109B (en) * | 1988-12-27 | 1991-10-02 | 黄崇德 | Practical technique of preparing hybridized rice seeds for increasing yield |
| CN2120630U (en) * | 1992-03-29 | 1992-11-04 | 黄达生 | Two-way, two-pipe sprayer |
| CN1169237A (en) * | 1996-06-29 | 1998-01-07 | 邵阳市科学技术委员会 | Long-shaped rice hybrid seads production technology suitable to mechanized pollen-collection and pollination |
| CN101053324A (en) * | 2006-04-10 | 2007-10-17 | 崔业民 | Backpack type mechanical mist and powder spraying machine |
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