CN103477975A - Method for increasing seed production yield of hybrid rice 'Fengliangyou No.4' - Google Patents

Method for increasing seed production yield of hybrid rice 'Fengliangyou No.4' Download PDF

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Publication number
CN103477975A
CN103477975A CN201310477635.6A CN201310477635A CN103477975A CN 103477975 A CN103477975 A CN 103477975A CN 201310477635 A CN201310477635 A CN 201310477635A CN 103477975 A CN103477975 A CN 103477975A
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seedling
rice
time
parent
seed
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姚元勋
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GUIZHOU HONGSIFANG AGRICULTURAL DEVELOPMENT Co Ltd
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GUIZHOU HONGSIFANG AGRICULTURAL DEVELOPMENT Co Ltd
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Abstract

The invention discloses a method for increasing the seed production yield of hybrid rice 'Fengliangyou No.4'. According to the method, an improved variety 'Feng' 9311 is taken as a male parent and an improved variety 'Guangzhan' 63S is taken as a female parent, and the improved variety 'Feng' 9311 is combined with the improved variety 'Guangzhan' 63S for hybrid seed production to produce seeds of the hybrid rice 'Fengliangyou No.4'; the method specifically comprises the following steps: (1) carrying out seed breeding; (2) raising rice seedlings; (3) transplanting the rice seedlings; (4) carrying out field management including the processes of fertilizing, applying 'Tiaohuabao' (a farm chemical), preventing and controlling pest and disease damage and applying '920' (a farm chemical); (5) pollinating; and (6) harvesting. Through the measures of improving a cultivation technology, applying a bio-regulator, adjusting a flowering phase, preventing and controlling pests and diseases and the like, the acre yield of the seed production of the hybrid rice 'Fengliangyou No.4' is greatly increased and is increased to 300kg from 120kg, so that the large-area seed production popularization of the hybrid rice 'Fengliangyou No.4' is achieved; the method is suitable for popularizing the cultivation of the hybrid rice 'Fengliangyou No.4'.

Description

Improve the method for hybrid rice " rich two excellent No. 4 " hybrid seed yield
Technical field
The present invention is relevant with the seed of crop, particularly, belongs to producing method for seed, furthermore, belongs to the producing method for seed of hybrid rice.
Technical background
Hybrid rice " rich two excellent No. 4 "----state examines rice 2009012, is the breeding of Anhui Province's crop varietal approval committee in 2006.This product kind Indica two line hybrid rice.Do season semilate rice plantation in the middle and lower reach of Yangtze River, average 135.3 days of the time of infertility, than contrasting excellent 838 length of II 0.1 day.The plant type compactness, growing way is in great numbers, and blade is straight and upright, and ripe phase annesl is good, bud scale, leaf sheath green, the bran point is colourless, without awns, every mu of number of productive ear 16.1 ten thousand fringes, plant height 124.8cm, spike length 24.2cm, several 180.6 of every total grain panicle, ripening rate 79.7%, thousand kernel weight 28.2g.Resistance is: 6.2 grades of rice blast composite indexes, and fringe pest percent of loss is the highest 9 grades; 7 grades of bacterial leaf-blights; 9 grades of brown planthoppers.Rice matter leading indicator: head rice rate 60.3%, aspect ratio 2.9, the white grain of chalk rate 21%, chalkiness degree 2.9%, glue denseness 75mm, amylose content 16.1%, reach 2 grades of country's " high quality paddy " standards.But use the traditional cultivation method, its hybrid seed yield is not high, does not reach the requirement of spread.
In recent years, the production of hybrid seeds problem of hybrid rice is paid close attention to by people, the agri-scientific research staff development some new technologies, No. 200610037698.X, Chinese patent application part " a kind of breeding and producing method for seed of hybrid rice II excellent 42 " for example, 200910025888.3 number " a kind of high-quality, how anti-, the breeding of high-yield hybrid paddy rice and producing method for seed ", number 201010189504.4 " a kind of hybrid rice seed breeding process ", number 201110174083.2 " a kind of hybrid rice seed breeding process safely and efficiently ", number 201210203670.4 " hybrid rice seed breeding process ", number 201310215397.1 " a kind of breeding method and producing method for seed of high-grain weight excellent-quality double-linear hybrid rice kind " etc.Yet have no up to now the Patents technology of hybrid rice " the rich two excellent No. 4 " production of hybrid seeds.
Summary of the invention
The object of the present invention is to provide the method for a kind of raising hybrid rice " rich two excellent No. 4 " hybrid seed yield, to meet the needs of spread " rich two excellent No. 4 " plantation.
The method of the high hybrid rice that the inventor provides " rich two excellent No. 4 " hybrid seed yield is to get breeding rich 9311 for male parent, get the breeding Guangzhan 63S do maternal, will rich 9311 and Guangzhan 63S combine and carry out hybrid seeding, produce rich two seeds of excellent No. 4; The concrete practice comprises:
(1) breeding
The parent (rich 9311 and Guangzhan 63S) who arranges hybrid rice " rich two excellent No. 4 " properly broadcasts the poor phase, guarantees flower synchronization; Before sowing, the parent is watered seed dressing with microbial bacterial agent " Gao Qiao ", after drying, be seeded in rice seedling bed, with regulating plant endogenous hormones reasonable layout, induce the crop immunogene to give full expression to, promote the healthy harmonic growth of plant, improve the crop disease prevention anti-disaster ability, thereby guarantee to bring out strong seedling;
(2) seedling
Rice seedling bed adopts farmyard manure and composite fertilizer to make base fertilizer, and the sowing of can unpacking after evenly harrowing in mud will reasonable light seeding during sowing, generally in rice seedling bed, male parent is rarer than female parent, guarantee that rice shoot has enough spaces of tillering, bring out the strong seedling many, that growing way is good of tillering, standby;
(3) transplanting seedlings
Shoot transplanting equipment will complete in good time: the male parent seedling age starts to move while reaching 35 days and cuts land for growing field crops, when seedling age reaches 40 days, completes the male parent field-transplanting; Maternal seedling age starts to transplant while reaching 20 days, and seedling age completes transplanting while reaching 25 days;
Shoot transplanting equipment will be planted sufficient Basic Seedling, according to the parent, plants the basic principle of " maternal by inserting, male parent by sending out ", more than the every cave of maternal Basic Seedling reaches 10 seedlings, every mu reach 120,000 seedlings more than, guarantee that the effective fringe of female parent reaches 180,000 fringes/more than mu; Male parent is planted in strict accordance with the single file triangle method of planting, and guarantees that male parent has enough pollen to be pollinated;
(4) field management
Field management comprises following content:
The one, fertilising, adopt composite fertilizer to make base fertilizer before the shoot transplanting equipment of land for growing field crops, and after shoot transplanting equipment, a week topdresses with composite fertilizer; In ear differentiation, during the fifth phase, with urea, as ear manuer, spread fertilizer over the fields; In booting stage, fringe phase beginning, pustulation period, with potassium dihydrogen phosphate aqueous solution, spray respectively, to improve thousand grain weigth;
The 2nd, use " treasured spent in tune ", in fringe phase beginning, cut phase, with multiple plain leaf fertile " treasured spent in tune ", female parent is sprayed 1 time respectively, thereby promote that chlorophyll is synthetic, strengthen the crop respiration, improve the activity of multiple hydrolase, promote the elongation of pollen germination and pollen tube, make that plant strain growth is vigorous, ripe early, output is high, improve the quality of product, improve maternal stigma exposing ratio, to promote seed-setting;
The 3rd, the extermination of disease and insect pest, take the Unifying control damage by disease and insect, and the control medicament be take biopesticide as main, and cultivation overall process control 3 times: the nursery period dispenser once, is turned green the dispenser in tillering stage once, and the fringe phase dispenser of cut beginning once;
The 4th, use " 920 ", repeatedly use auxin 920, guarantee to have enough pollen to be pollinated; Wherein, when spraying " 92 O " for the first time and for the second time, adopt the same spray of bactericide " tricyclazole " and " 92 O ", to prevent and treat rice blast; Always tender according to rice shoot, take the method for " front heavy in light then mend " or " front light in heavy then mend " to spray, and in latter 4 days of spray " GA " for the third time, continues to grow flower with " GA ", guarantees to have enough pollen to be pollinated;
(5) pollination
Treat maternal stigma appearing, paternal pollen abundance, can be pollinated, adhere to pollinating every day 3 times, each 30 minutes interval times, guarantee the female parent rate of being pollinated, improve the seed-setting rate;
(6) results
Be paddy 75%~80% when ripe harvest time, and rice strain master fringe is all jaundice, have 40% stalk withered, presents the blue or green paddy of bar when yellow, robs in time the fine day results.
In the breeding of said method, described microbial bacterial agent " Gao Qiao " is watered seed dressing, is to just showing money or valuables one carries unintentionally by parent's presoaking and germinating, dry a little, with the 10ml height, be watered ingeniously the 10ml wiring solution-forming, 1 kg dresses seed, seed is spread out on plastic film, it is mixed thoroughly gently, more fully dry rear sowing in the cool.
In the seedling of said method, described base fertilizer be every 1 mu with farmyard manure (people, cattle manure) 20 load, 45% composite fertilizer (N-P-K ratio 15-15-15) 15kg; Described sowing is male parent seeding quantity 5kg, maternal seeding quantity 10kg in every mu of rice seedling bed.
In the transplanting seedlings of said method, the described triangle method of planting be by the male parent seedling growing on the position at an Atria angle, the distance between three angles is 5~7 ㎝.
In the fertilising of said method field management, described base fertilizer is every 1 mu and uses 45% composite fertilizer (N-P-K ratio 15-15-15) 30kg; Described topdressing is every 1 mu and uses 45% composite fertilizer (N-P-K ratio 15-15-15) 10kg; It is every 1 mu of urea 4kg that uses nitrogen content (disperseing in quality) 46% that described urea spreads fertilizer over the fields; Described to spray the potassium dihydrogen phosphate aqueous solution potassium dihydrogen phosphate that to refer to content be 99% water-soluble, contains the 200g potassium dihydrogen phosphate in the aqueous solution of every 1 mu of applied once.
Using in " treasured spent in tune " of said method field management, use for 1 time for every 1 mu and adjust the aqueous solution of spending precious 5g.
Biopesticide described in the prevention and elimination of disease and pests of said method field management is commercial goods " Fu Ge ", " love seedling " and " green protecting ", nursery period, executed " Fu Ge " 2 bag+" love seedling " 4 bags, divide two barrels of water evenly to spray, concrete spraying time is determined according to Field observation damage by disease and insect situation; Turn green and execute " Fu Ge " 2 bag+" love seedling " 4 bag+" green protecting " 2 bags tillering stage, minute two barrels of water evenly spray; Fringe phase cut beginning is executed " Fu Ge " 2 bag+" love seedling " 4 bag+20% tricyclazole 100g, and minute two barrels of water evenly spray.
Using in " 920 " of said method field management, every mu of adding of germicide " tricyclazole " 100g while spraying " 92 O " for the first time and for the second time, " GA " consumption that spray " GA " is grown flower in latter 4 days for the third time is 2g every day.
The inventive method is by measures such as the application to the improvement of culture technique, biological regulator, the adjustment at florescence, diseases and pests controlling, increases substantially the per mu yield of " rich two excellent No. 4 " production of hybrid seeds.Average yield per mu is brought up to average yield per mu 300kg by 120kg, and the highest per unit area yield has reached 400 kg, realizes that the large tracts of land production of hybrid seeds of " rich two excellent No. 4 " combination is promoted.Be applicable to promote " rich two excellent No. 4 " cultivation.
Embodiment
Shi Shi Li ︰
Domestic Guizhou, Cengong County, Guizhou Province red cubic agricultural development Co., Ltd, introduce Fine Quality Hybrid Rice two and be combination " rich two excellent No. 4 " and carry out the production of hybrid seeds in 2009 from Anhui.By the trial-production of 2009 1 year, this Performance of cultivar was better with respect to Anhui, but output does not still reach the requirement of spread.Through the exploration of 3 years, by the improvement to cultivation method, the application of biological regulation Ji, the florescence is adjusted, and the measures such as diseases and pests controlling, increased substantially per mu yield.Per mu yield is brought up to 300 kilograms of left and right by the 120 kg of introduction in 2009.2013, the production of hybrid seeds area that " rich two excellent No. 4 " are combined in the county reached 4500 mu, and average yield per mu reaches 310 kilograms, and the per mu yield value reaches 5270 yuan.
Specific practice is:
(1) breeding
The parent's (Parent) who arranges hybrid rice " rich two excellent No. 4 " properly broadcasts the poor phase, guarantees flower synchronization; Before sowing, parent's presoaking and germinating, to just showing money or valuables one carries unintentionally, dries a little, with the 10ml height, is watered ingeniously the 10ml wiring solution-forming, seed dressing 1kg, and seed is spread out on plastic film, it is mixed thoroughly gently, then be seeded in rice seedling bed after fully drying in the cool;
(2) seedling
Rice seedling bed adopts farmyard manure and composite fertilizer to make base fertilizer, every 1 mu with farmyard manure (people, cattle manure) 20 load, 45% composite fertilizer (N-P-K ratio 15-15-15) 15kg, unpack and sow after evenly harrowing in mud, male parent seeding quantity 5kg, maternal seeding quantity 10kg in every mu of rice seedling bed, guarantee that rice shoot has enough spaces of tillering, bring out the strong seedling many, that growing way is good of tillering, standby;
(3) transplanting seedlings
Shoot transplanting equipment will complete in good time: the male parent seedling age starts to move while reaching 35 days and cuts land for growing field crops, when seedling age reaches 40 days, completes the male parent field-transplanting; Maternal seedling age starts to transplant while reaching 20 days, and seedling age completes transplanting while reaching 25 days;
Shoot transplanting equipment will be planted sufficient Basic Seedling, more than the every cave of maternal Basic Seedling must reach 10 seedlings, every mu reach 120,000 seedlings more than, guarantee that maternal effectively fringe reaches 180,000 fringes/more than mu; Male parent is planted in strict accordance with the single file triangle method of planting, and guarantees that male parent has enough pollen to be pollinated;
(4) field management
Comprise following content:
The one, fertilising, adopt composite fertilizer to make base fertilizer before the shoot transplanting equipment of land for growing field crops, use 45% composite fertilizer (N-P-K ratio 15-15-15) 30kg for every 1 mu; After shoot transplanting equipment, a week topdresses with composite fertilizer, uses 45% composite fertilizer (N-P-K ratio 15-15-15) 10kg for every 1 mu; Ear differentiation during the fifth phase every 1 mu of urea 4kg that uses nitrogen content 46% as ear manuer, spread fertilizer over the fields; The water-soluble aqueous solution of potassium dihydrogen phosphate that to use respectively content be 99% in booting stage, fringe phase beginning, pustulation period sprays, and contains the 200g potassium dihydrogen phosphate in the aqueous solution of every 1 mu of applied once;
The 2nd, use " treasured spent in tune ", in fringe phase beginning, cut phase, with multiple plain leaf fertile " treasured spent in tune ", female parent is sprayed 1 time respectively, use for 1 time for every 1 mu and adjust the aqueous solution of spending precious 5g, improve maternal stigma exposing ratio;
The 3rd, the extermination of disease and insect pest, take the Unifying control damage by disease and insect, and the control medicament is with the good fortune dagger-axe ", " love seedling " and " green protecting ", nursery period, executed " Fu Ge " 2 bag+" love seedlings " 4 bags, divides two barrels of water evenly to spray; Turn green and execute " Fu Ge " 2 bag+" love seedling " 4 bag+" green protecting " 2 bags tillering stage, minute two barrels of water evenly spray; Fringe phase cut beginning is executed " Fu Ge " 2 bag+" love seedling " 4 bag+20% tricyclazole 100g, and minute two barrels of water evenly spray;
The 4th, use " 920 ", repeatedly use auxin 920, every mu of adding of germicide " tricyclazole " 100g while spraying " 92 O " for the first time and for the second time, " 920 " consumption that spray " 920 " is grown flower in latter 4 days for the third time be every mu every day 2g, guarantee to have enough pollen to be pollinated;
(5) pollination
Treat maternal stigma appearing, paternal pollen abundance, pollination, adhere to pollinating 3 times every day at once, and every minor tick 30min guarantees the female parent rate of being pollinated, and improves the seed-setting rate;
(6) results
Be paddy 75%~80% when ripe harvest time, and the main fringe of rice strain is all jaundice, have 40% stalk withered, presents the blue or green paddy of bar when yellow, robs in time the fine day results, and now output is just high.

Claims (8)

1. a method that improves hybrid rice " rich two excellent No. 4 " hybrid seed yield, is characterized in that getting breeding rich 9311 for male parent, get the breeding Guangzhan 63S do maternal, will rich 9311 and Guangzhan 63S combine and carry out hybrid seeding, produce rich two seeds of excellent No. 4; The concrete practice comprises:
(1) breeding
The parent who arranges hybrid rice " rich two excellent No. 4 " properly broadcasts the poor phase, guarantees flower synchronization; Before sowing, the parent is watered seed dressing with microbial bacterial agent " Gao Qiao ", after drying, is seeded in rice seedling bed, to improve the crop disease prevention anti-disaster ability, thereby guarantees to bring out strong seedling;
(2) seedling
Rice seedling bed adopts farmyard manure and composite fertilizer to make base fertilizer, evenly harrows the rear sowing of unpacking in mud, wants reasonable light seeding during sowing, and in rice seedling bed, male parent is rarer than female parent, guarantees that rice shoot has enough spaces of tillering, and brings out the strong seedling many, that growing way is good of tillering, standby;
(3) transplanting seedlings
Shoot transplanting equipment will complete in good time: the male parent seedling age starts to move while reaching 35 days and cuts land for growing field crops, when seedling age reaches 40 days, completes the male parent field-transplanting; Maternal seedling age starts to transplant while reaching 20 days, and seedling age completes transplanting while reaching 25 days;
Shoot transplanting equipment will be planted sufficient Basic Seedling, more than the every cave of maternal Basic Seedling reaches 10 seedlings, every mu reach 120,000 seedlings more than, effectively fringe reaches 180,000 fringes/more than mu; Male parent is planted according to the single file triangle method of planting, and guarantees that male parent has enough pollen to be pollinated;
(4) field management
Field management comprises following content:
The one, fertilising, adopt composite fertilizer to make base fertilizer before the shoot transplanting equipment of land for growing field crops, and after shoot transplanting equipment, a week topdresses with composite fertilizer; In ear differentiation, during the fifth phase, with urea, as ear manuer, spread fertilizer over the fields; In booting stage, fringe phase beginning, pustulation period, with potassium dihydrogen phosphate aqueous solution, spray respectively, to improve thousand grain weigth;
The 2nd, use " treasured spent in tune ", in fringe phase beginning, cut phase, with multiple plain leaf fertile " treasured spent in tune ", female parent is sprayed 1 time respectively, improve maternal stigma exposing ratio, to promote seed-setting;
The 3rd, the extermination of disease and insect pest, take the Unifying control damage by disease and insect, and the control medicament be take biopesticide as main, cultivation overall process control 3 times: nursery period dispenser 1 time, the dispenser in tillering stage 1 time of turning green, cut beginning fringe phase dispenser 1 time;
The 4th, use " 920 ", repeatedly use auxin 920, guarantee to have enough pollen to be pollinated; Wherein, when spraying " 92 O " for the first time and for the second time, adopt the same spray of bactericide " tricyclazole " and " 92 O ", to prevent and treat rice blast; In latter 4 days of spray " 920 " for the third time, continue to grow flower with " 920 ", guarantee to have enough pollen to be pollinated;
(5) pollination
Treat maternal stigma appearing, paternal pollen abundance, pollination, pollinate 3 every day at once, and each interval time, 30min, guaranteed the female parent rate of being pollinated, and improves the seed-setting rate;
(6) results
Be paddy 75%~80% when ripe harvest time, and rice strain master fringe is all jaundice, have 40% stalk withered, presents the blue or green paddy of bar when yellow, robs in time the fine day results.
2. in accordance with the method for claim 1, it is characterized in that in breeding, described microbial bacterial agent " Gao Qiao " is watered seed dressing, be by parent's presoaking and germinating to just showing money or valuables one carries unintentionally, dry a little, be watered ingeniously the 10ml wiring solution-forming with the 10ml height, 1 kg dresses seed, seed is spread out on plastic film, it is mixed thoroughly gently, more fully dry rear sowing in the cool.
3. in accordance with the method for claim 1, it is characterized in that in seedling, described base fertilizer is every 1 mu of composite fertilizer 15kg with farmyard manure 20 loads, 45%N-P-K mass ratio 15-15-15; Described sowing is male parent seeding quantity 5kg, maternal seeding quantity 10kg in every mu of rice seedling bed.
4. in accordance with the method for claim 1, it is characterized in that in transplanting seedlings, the described triangle method of planting be by the male parent seedling growing on the position at an Atria angle, the distance between three angles is 5~7 ㎝.
5. in accordance with the method for claim 1, it is characterized in that in the fertilising of field management, described base fertilizer is every 1 mu of 45% composite fertilizer 30kg that uses N-P-K mass ratio 15-15-15; Described topdressing is every 1 mu of 45% composite fertilizer 10kg that uses N-P-K mass ratio 15-15-15; It is every 1 mu of urea 4kg that uses nitrogen content 46% that described urea spreads fertilizer over the fields; The described potassium dihydrogen phosphate aqueous solution that sprays is by mass fraction, to be 99% potassium dihydrogen phosphate is water-soluble, contains the 200g potassium dihydrogen phosphate in the aqueous solution of every 1 mu of applied once.
6. in accordance with the method for claim 1, it is characterized in that using in " treasured spent in tune " of field management, use for 1 time for every 1 mu and adjust the aqueous solution of spending precious 5g.
7. in accordance with the method for claim 1, it is characterized in that described in the prevention and elimination of disease and pests of field management, biopesticide is commercial goods " Fu Ge ", " love seedling " and " green protecting ", nursery period, executed " Fu Ge " 2 bag+" love seedlings " 4 bags, and minute two barrels of water evenly spray; Turn green and execute " Fu Ge " 2 bag+" love seedling " 4 bag+" green protecting " 2 bags tillering stage, minute two barrels of water evenly spray; Fringe phase cut beginning is executed " Fu Ge " 2 bag+" love seedling " 4 bag+20% tricyclazole 100g, and minute two barrels of water evenly spray.
8. in accordance with the method for claim 1, it is characterized in that using in " 920 " of field management, every mu of adding of germicide " tricyclazole " 100g during for the first time and for the second time spray " 92 O ", " 920 " consumption that spray " 920 " is grown flower in latter 4 days for the third time be every mu every day 2g.
CN201310477635.6A 2013-10-14 2013-10-14 Method for increasing seed production yield of hybrid rice 'Fengliangyou No.4' Pending CN103477975A (en)

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Cited By (7)

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Publication number Priority date Publication date Assignee Title
CN103787739A (en) * 2014-01-03 2014-05-14 湖南农业大学 Yield increase regulation method for hybrid rice
CN104365251A (en) * 2014-11-12 2015-02-25 杨开红 Rice fertilization method
CN105103910A (en) * 2015-08-31 2015-12-02 镇江瑞繁农艺有限公司 Method for increasing seed production yield of dandelions
CN106613907A (en) * 2016-11-23 2017-05-10 盐城市大丰区小海镇农业技术推广综合服务中心 Method for regulating flowering phase of seed production hybrid rice
CN107360773A (en) * 2017-08-17 2017-11-21 宿松县成义家庭农场 A kind of fertilization of rice method
CN108323392A (en) * 2018-02-09 2018-07-27 四川益邦种业有限责任公司 A kind of method of the big field tectorial membrane intensified culturing production paddy rice cross breeding seed of seedbed nursery
CN111053008A (en) * 2020-01-06 2020-04-24 盐城市盐都区农业科学研究所 Method for planting ratoon rice in coastal region

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CN103250635A (en) * 2013-05-31 2013-08-21 江苏沿海地区农业科学研究所 Breeding method and seed production method of high-grain-weight and high-quality two-line hybrid rice

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Cited By (8)

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Publication number Priority date Publication date Assignee Title
CN103787739A (en) * 2014-01-03 2014-05-14 湖南农业大学 Yield increase regulation method for hybrid rice
CN103787739B (en) * 2014-01-03 2015-11-11 湖南农业大学 A kind of volume increase control method of hybridisation rice
CN104365251A (en) * 2014-11-12 2015-02-25 杨开红 Rice fertilization method
CN105103910A (en) * 2015-08-31 2015-12-02 镇江瑞繁农艺有限公司 Method for increasing seed production yield of dandelions
CN106613907A (en) * 2016-11-23 2017-05-10 盐城市大丰区小海镇农业技术推广综合服务中心 Method for regulating flowering phase of seed production hybrid rice
CN107360773A (en) * 2017-08-17 2017-11-21 宿松县成义家庭农场 A kind of fertilization of rice method
CN108323392A (en) * 2018-02-09 2018-07-27 四川益邦种业有限责任公司 A kind of method of the big field tectorial membrane intensified culturing production paddy rice cross breeding seed of seedbed nursery
CN111053008A (en) * 2020-01-06 2020-04-24 盐城市盐都区农业科学研究所 Method for planting ratoon rice in coastal region

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Application publication date: 20140101